阅读说明：本技术 驱动装置以及照明装置 (Driving device and lighting device ) 是由 藤泽辰一 于 2018-04-24 设计创作，主要内容包括：实施方式的驱动装置具备臂、操作对象、以及施力部。臂的一端部侧被支承机构支承,上述臂包括电动的驱动源。操作对象安装于臂的作为一端部的相反一侧的端部的另一端部,通过驱动源而能够以与从一端部朝向另一端部的方向交叉的一个旋转轴为中心进行转动。制动部在向驱动源的电力供给停止时将对象齿轮卡止,上述对象齿轮为配置于臂且与操作对象的转动一起旋转的齿轮。(The driving device of the embodiment comprises an arm, an operation object and a force application part. One end side of the arm is supported by a support mechanism, and the arm includes an electric drive source. The operation target is attached to the other end portion of the opposite end portion of the arm as the one end portion, and is rotatable by the drive source about one rotation axis intersecting a direction from the one end portion toward the other end portion. The brake unit locks a target gear, which is a gear disposed on the arm and rotating together with the rotation of the operation target, when the supply of electric power to the drive source is stopped.)

1. A drive device is characterized by comprising:

An arm having one end portion supported by a support mechanism, the arm including an electric drive source;

An operation object that is attached to the other end portion of the arm that is an end portion on the opposite side of the one end portion, and that is rotatable by the drive source about one rotation axis that intersects with a direction from the one end portion toward the other end portion; and

and a brake unit that locks a target gear that is a gear that is disposed on the arm and rotates together with the rotation of the operation target when the supply of electric power to the drive source is stopped.

2. the drive device according to claim 1,

The brake portion contacts the target gear when the supply of electric power to the drive source is stopped, thereby locking the target gear.

3. The drive device according to claim 2,

The brake portion does not contact the target gear when power is supplied to the drive source.

4. The drive device according to claim 2 or 3,

The brake portion has a receiving portion formed with a gear,

When the supply of electric power to the drive source is stopped, the target gear is engaged with the target gear, and the brake unit locks the target gear.

5. The drive device according to any one of claims 1 to 4,

The brake unit locks the target gear with an output shaft of the drive source as a rotation shaft when the supply of electric power to the drive source is stopped.

6. the drive device according to any one of claims 1 to 5,

The driving source is a stepping motor.

7. the drive device according to claim 6,

The number of teeth of the target gear is more than 2 times the number of poles of the stepping motor.

8. A lighting device is characterized in that a lamp body is provided,

The lighting device is the driving device according to any one of claims 1 to 7 including a lamp body as the operation target.

9. A drive device is characterized by comprising:

An arm having one end portion supported by a support mechanism, the arm including an electric drive source;

An operation object that is attached to the other end portion of the arm that is an end portion on the opposite side of the one end portion, and that is rotatable by the drive source about one rotation axis that intersects with a direction from the one end portion toward the other end portion; and

And a biasing portion that biases a target gear, which is a gear disposed on the arm and engaged with a gear of a path through which a driving force is transmitted from the driving source to the operation target, in an axial direction.

10. The drive device according to claim 9,

The urging section urges the target gear provided outside the path in the axial direction.

11. The drive device according to claim 9 or 10,

The urging portion is formed of a spring member.

12. The drive device according to claim 11,

the biasing portion has an abutting portion that abuts against the target gear from one surface side of the target gear in the axial direction.

13. The drive device according to claim 12,

the urging portion presses an opposite surface of the one surface of the counter gear against the object located on the opposite surface side through the contact portion.

14. the drive device according to claim 12 or 13,

the counter gear has a flange portion provided on the one surface side and formed to have an outer diameter larger than that of a gear portion having teeth formed thereon,

the urging portion presses the flange portion in the axial direction by the abutment portion, thereby urging the counter gear in the axial direction.

15. The drive device according to claim 14,

The urging portion has a base portion attached to the arm and a pair of arm portions extending from the base portion as the contact portion,

The pair of arm portions press circumferential end portions of the flange portion in the axial direction, thereby urging the counter gear in the axial direction.

16. The drive device according to any one of claims 9 to 15,

The driving device further includes a damping mechanism that damps a rotational force of the target gear.

17. The drive device according to claim 16,

The damping mechanism includes grease disposed between the counter gear and a shaft of the counter gear.

18. The drive device according to any one of claims 9 to 17,

The drive device further includes:

a support unit including another electric drive source, the arm being supported by the other drive source so as to be rotatable about another rotation axis intersecting the one rotation axis; and

And another biasing portion that biases another gear in another axial direction that is an axial direction of the other gear, the other gear being disposed on the arm and meshing with a gear of a path through which the driving force is transmitted from the other driving source to the support portion.

19. A lighting device is characterized in that a lamp body is provided,

The lighting device is the driving device according to any one of claims 9 to 18 including a lamp body as the operation target.

Technical Field

The invention relates to a driving device and a lighting device.

Background

Conventionally, there has been provided an illumination device capable of changing an irradiation direction of a spotlight or the like to an arbitrary direction. Such a lighting device (driving device) pivotally supports a lamp body from a side portion thereof so as to be rotatable, for example, by an arm extending from a support portion attached to a ceiling surface. In this case, the arm pivotally supported by the support portion is rotated to change the orientation of the lamp body in the horizontal direction (planar direction), and the lamp body pivotally supported by the arm is rotated to change the orientation of the lamp body in the vertical direction (pitch direction).

Patent document 1: japanese laid-open patent publication No. 2009-110717

however, in the above-described conventional technique, it is difficult to suppress adverse effects due to the weight of the operation object, such as the light source and the lamp body, while changing the direction of the operation object to a desired direction. For example, in the above-described driving device, the operation object is supported by the arm shaft from the side portion, and thus, for example, the weight of the operation object itself may adversely affect the rotation of the operation object.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a driving device and an illumination device capable of suppressing adverse effects due to the weight of an operation object while changing the direction of the operation object to a desired direction.

In order to solve the above problems and achieve the object, a driving device according to an aspect of the present invention includes: an arm having one end portion supported by a support mechanism, the arm including an electric drive source; an operation object that is attached to the other end portion of the arm that is an end portion on the opposite side of the one end portion, and that is rotatable by the drive source about one rotation axis that intersects with a direction from the one end portion toward the other end portion; and a brake unit that locks a target gear that is a gear that is disposed on the arm and rotates together with the rotation of the operation target when the supply of electric power to the drive source is stopped.

According to one aspect of the present invention, it is possible to suppress adverse effects due to the weight of the operation target while changing the direction of the operation target to a desired direction.

Drawings

fig. 1 is a front view showing a lighting device according to an embodiment.

Fig. 2 is a perspective view showing the lighting device according to the embodiment.

Fig. 3 is a perspective view showing the inside of a housing box of the illumination device according to the embodiment.

Fig. 4 is a perspective view showing a top plate of the lighting device according to the embodiment.

Fig. 5 is a perspective view showing a main part of a housing box of the illumination device according to the embodiment.

Fig. 6 is a perspective view showing a main part of an outer frame of a housing box of the illumination device according to the embodiment.

fig. 7 is a perspective view showing a 1 st bracket of the lighting device according to the embodiment.

Fig. 8 is a perspective view showing a 2 nd bracket of the lighting device according to the embodiment.

Fig. 9 is a perspective view showing a connection portion where the housing box and the arm of the illumination device according to the embodiment are connected.

fig. 10 is a perspective view showing the inside of a connecting portion of an arm of the illumination device according to the embodiment.

Fig. 11 is a perspective view showing the inside of a connecting portion of an arm of the illumination device according to the embodiment.

Fig. 12 is a plan view showing the inside of the connection portion of the arm of the illumination device according to the embodiment.

Fig. 13 is a perspective view showing a relationship between the biasing portion and the counter gear in the illumination device according to the embodiment.

Fig. 14 is a front view of the inside of the 2 nd arm part of the lighting device according to the embodiment.

Fig. 15 is a plan view showing a stopper portion of the illumination device according to the embodiment.

Fig. 16 is a side view showing a main part in the 2 nd arm part of the lighting device according to the embodiment.

fig. 17 is a perspective view showing a relationship between the biasing portion and the counter gear in the illumination device according to the embodiment.

Fig. 18 is a perspective view showing a main part in the 2 nd arm part of the lighting device according to the embodiment.

Fig. 19 is a perspective view showing a main part of a driving mechanism formed by the 3 rd motor of the lighting device according to the embodiment.

Fig. 20 is a perspective view showing a main part of the 2 nd arm part of the lighting device according to the embodiment.

Fig. 21 is a perspective view showing a lamp body of the lighting device according to the embodiment.

Fig. 22 is a plan view showing a main part of a lamp body of the lighting device according to the embodiment.

Fig. 23 is a perspective view showing a holding portion of the illumination device according to the embodiment.

Fig. 24 is a perspective view showing an aiming portion of the illumination device according to the embodiment.

Fig. 25 is a perspective view showing a rotation portion of the illumination device according to the embodiment.

Fig. 26 is a partial perspective view showing a zoom mechanism of the illumination device according to the embodiment.

Detailed Description

in the following embodiments, an illumination device 1 as an example of a device having a driving device 2 will be described with reference to the drawings. For example, the driving device 2 includes a lamp body 30 as an operation target, and the lamp body 30 includes a light source (a light emitting element or the like provided on the substrate 100). Hereinafter, the lighting device 1 including the lamp body 30 will be described as an example of the driving device 2. The application of the driving device 2 is not limited to the embodiment described below. The driving device 2 is not limited to the lighting device 1, and may be applied to any device according to the purpose as long as the device changes the direction of the operation target to a desired direction. Note that the drawings are schematic drawings, and it is necessary to note that the dimensional relationship of the elements, the ratio of the elements, and the like may be different from those in reality. The drawings may include portions having different dimensional relationships and ratios from each other.

First, an outline of the configuration of the illumination device 1 will be described with reference to fig. 1 and 2. Fig. 1 is a front view showing a lighting device according to an embodiment. Specifically, fig. 1 is a front view of the lighting device 1 as viewed from the lamp body 30 side. Fig. 2 is a perspective view showing the lighting device according to the embodiment. Fig. 2 is a perspective view of the arm 20 of the lighting device 1 viewed from the 2 nd arm 23 side.

Hereinafter, a direction along a rotation axis (hereinafter, also referred to as "1 st rotation axis") of the arm 20 described later is referred to as a Y axis, and the X axis and the Z axis form an axis orthogonal to a plane orthogonal to the Y axis. For example, the X axis is a direction along a rotation axis (hereinafter, also referred to as "2 nd rotation axis") of the lamp body 30 at a position (initial position) when the lighting device 1 is mounted.

The lighting device 1 includes a housing case 10, an arm 20, and a lamp body 30. As shown in fig. 2, the lamp body 30 is provided below the housing box 10 in the direction of gravity (negative Y-axis direction) and at a position overlapping the housing box 10 in a plan view.

First, the structure of the storage box 10 will be described with reference to fig. 2 to 9. As shown in fig. 2 and 3, the storage box 10 includes an outer frame 11, a top plate 12, a 1 st tray 13, a 2 nd tray 14, a 1 st lid 15, and a 2 nd lid 16. Fig. 3 is a perspective view showing the inside of a housing box of the illumination device according to the embodiment. Specifically, fig. 3 is a perspective view of the storage box 10 with the top plate 12 and the locking portion 171 removed.

First, the outer shape of the housing box 10 will be described. The outer frame 11 has a bottom wall 111 and a pair of side walls 112 and 113 continuous with the bottom wall 111 and opposed to each other. In the example of fig. 3, the outer frame 11 has a pair of side walls 112 and 113 in the short side direction of the outer frame 11 along the bottom wall 111, and both end surfaces of the outer frame 11 in the longitudinal direction of the outer frame 11 along the bottom wall 111 are open. An opening surface 114, which is one surface of the outer frame 11 facing the bottom wall 111, is open.

The outer frame 11 is formed by bending an aluminum metal plate. Here, from the viewpoint of securing the strength for supporting the lamp body 30, a structure in which the outer frame 11 is formed of die-cast aluminum is also considered. However, in the machining of die-cast aluminum, although a complicated shape can be manufactured using a precise metal mold, there is a problem that the cost increases. When the strength is secured, if the thickness and the weight are secured, the problem of high cost is significant. In this respect, in the present embodiment, since the outer frame 11 is formed by bending a thin aluminum metal plate, the outer frame 11 can be made thinner and the cost can be reduced as compared with a structure in which the outer frame 11 is formed by die-cast aluminum. In addition, in the structure of the present embodiment in which the outer frame 11 is formed by bending an aluminum metal plate, since it is not necessary to use a precise metal mold, the outer frame 11 can be easily manufactured as compared with a structure in which the outer frame 11 is formed of die-cast aluminum. In the present embodiment, iron brackets (the 1 st bracket 13 and the 2 nd bracket 14 described later) are fixed to the outer frame 11 at positions where strength is required. Thus, the outer frame 11 can be formed by bending the aluminum metal plate, thereby reducing the weight and ensuring sufficient strength for supporting the lamp body 30.

as shown in fig. 4, the top plate 12 is coupled to the outer frame 11 so as to cover the opening surface 114 of the outer frame 11. Fig. 4 is a perspective view showing a top plate of the lighting device according to the embodiment. The connection between the top plate 12 and the outer frame 11 will be described in detail later. The top plate 12 is made of iron and formed in a rectangular plate shape.

The top plate 12 has a mounting portion 121 to which the locking portion 171 is mounted. The storage box 10 is attached to a predetermined object (structure) such as a ceiling by the locking portion 171 attached to the top plate 12. For example, the storage box 10 is detachably attached to a desired position of a rail (not shown) provided on the ceiling surface by the locking portion 171. For example, the locking portion 171 may be used for supplying power into the storage case 10. The top plate 12 has an insertion hole 122 formed at one end in the longitudinal direction and an insertion hole 123 formed at the other end.

The 1 st cover 15 is provided on one end (front in fig. 2) side in the longitudinal direction of the outer frame 11 so as to cover an end surface on the one end side. Specifically, the 1 st cover 15 is provided at one end of the bottom wall 111 on the side where the opening 18 is formed. In addition, the 1 st cover 15 is formed of a resin material.

The 2 nd cover 16 is provided on the other end portion (rear side in fig. 2) side in the longitudinal direction of the outer frame 11 so as to cover the end surface on the other end portion side. The 2 nd cover 16 is made of various materials such as resin and metal. For example, the 2 nd cover 16 may be formed of a resin material as in the 1 st cover 15. The 1 st cover 15 and the 2 nd cover 16 cover a pair of side surfaces (both end surfaces) other than the side surfaces on which the pair of side walls 112 and 113 are formed.

In this way, the outer shape of the housing box 10 is formed by the outer frame 11, the top plate 12 covering the opening surface 114 of the outer frame 11, and the 1 st lid 15 and the 2 nd lid 16 respectively covering both end surfaces in the longitudinal direction of the outer frame 11.

The interior of the storage box 10 will be described from here on. As shown in fig. 3, the accommodating case 10 is provided with the 1 st tray 13 and the 2 nd tray 14, and accommodates various configurations such as a power supply unit 172 and a wireless communication unit 173. For example, the power supply unit 172 is a power supply board that supplies electric power to the 1 st motor 47, the 2 nd motor 61, the substrate 100, and the like, which will be described later. The power supply unit 172 is disposed along the bottom wall 111.

the wireless communication unit 173 is a wireless communication substrate that has a wireless communication function such as Bluetooth (registered trademark) and receives an instruction to drive the 1 st motor 47 and the 2 nd motor 61 from the outside through the wireless communication function, for example. The wireless communication unit 173 may include a control board (control unit) for controlling the 1 st motor 47 and the 2 nd motor 61. The wireless communication unit 173 is disposed on one end side in the longitudinal direction of the housing 11. As shown in fig. 3, the wireless communication unit 173 is disposed along an end surface of one end portion side in the longitudinal direction of the outer frame 11. That is, the wireless communication unit 173 is disposed along the 1 st cover 15 that covers the end face on the one end side in the longitudinal direction of the outer frame 11.

As described above, since the 1 st cover 15 is formed of a resin material, the influence of the 1 st cover 15 on the wireless communication by the wireless communication unit 173 can be suppressed. The wireless communication unit 173 may be disposed on the other end side in the longitudinal direction of the housing 11. In this case, by forming the 2 nd cover 16 of a resin material, the influence of the 2 nd cover 16 on the wireless communication by the wireless communication unit 173 can be suppressed.

The 1 st bracket 13 is an iron bracket disposed on one end side in the longitudinal direction of the outer frame 11. As shown in fig. 5, the 1 st bracket 13 is provided along the inner surface of the bottom wall 111 and the inner surfaces of the pair of side walls 112 and 113 of the outer frame 11. Fig. 5 is a perspective view showing a main part of a housing box of the illumination device according to the embodiment. Specifically, fig. 5 is a perspective view showing a relationship between the outer frame 11 and the 1 st bracket 13.

As shown in fig. 5 and 6, a circular opening 18 is formed in the bottom wall 111 on one end side in the longitudinal direction of the outer frame 11. Fig. 6 is a perspective view showing a main part of an outer frame of a housing box of the illumination device according to the embodiment. Specifically, fig. 6 is a perspective view showing one end side of the bottom wall 111 of the outer frame 11 where the opening 18 is formed. In addition, 6 insertion holes 181 to 186 are formed in the bottom wall 111 along the circumferential direction of the opening 18. Further, a protruding piece 1121 protruding toward the side wall 113 is provided on the side of the opening surface 114 of the side wall 112 and on one end side in the longitudinal direction of the outer frame 11. Further, a projecting piece 1131 projecting toward the side wall 112 is provided on the side of the opening surface 114 of the side wall 113 and on one end side in the longitudinal direction of the outer frame 11.

As shown in fig. 5 and 7, the 1 st bracket 13 includes a mounting portion 131 as a bottom portion and a pair of side portions 132 and 133 continuous with the mounting portion 131 and opposed to each other. Fig. 7 is a perspective view showing a 1 st bracket of the lighting device according to the embodiment. A circular opening 134 is formed in the mounting portion 131 of the 1 st bracket 13. For example, an opening 134 having the same shape as the opening 18 of the bottom wall 111 is formed in the mounting portion 131 of the 1 st bracket 13.

The mounting portion 131 has 6 insertion holes 1311 to 1316 formed along the circumferential direction of the opening 134. Further, a protruding piece 1321 protruding toward the side portion 133 is provided at a front end portion of the side portion 132 in a direction away from the mounting portion 131. Further, a protruding piece 1331 protruding toward the side portion 132 is provided at the front end portion of the side portion 133 in the direction away from the mounting portion 131.

As shown in fig. 5, the 1 st bracket 13 is disposed such that the opening 134 of the mounting portion 131 overlaps the opening 18 of the bottom wall 111. In addition, the 6 insertion holes 1311 to 1316 of the mounting portion 131 overlap the 6 insertion holes 181 to 186 of the bottom wall 111. Further, the protruding piece 1321 of the side portion 132 overlaps the protruding piece 1121 of the side wall 112 from the bottom wall 111 side. Further, the projection 1331 of the side portion 133 overlaps the projection 1131 of the side wall 113 from the bottom wall 111 side. Thus, the 1 st bracket 13 is disposed along the inner surface of the outer frame 11.

Further, the top plate 12 is attached to the protruding piece 1121 of the side wall 112 and the protruding piece 1321 of the side portion 132. In the top plate 12, the top plate 12 is attached to the 1 st bracket 13 through the insertion hole 122 provided in a portion overlapping the protruding piece 1121 of the side wall 112. For example, the top plate 12 is attached to the 1 st bracket 13 by insertion holes provided in the protruding pieces 1121 and 1321 at positions overlapping the insertion holes 122 of the top plate 12, and a screw fastening mechanism by the screw member 124.

The top plate 12 is attached to the protruding piece 1131 of the side wall 113 and the protruding piece 1331 of the side portion 133. In the top plate 12, the top plate 12 is attached to the 1 st bracket 13 through the insertion hole 122 provided in a portion overlapping the protruding piece 1131 of the side wall 113. For example, the top plate 12 is attached to the 1 st bracket 13 by insertion holes provided in the projecting pieces 1131 and 1331 at positions overlapping the insertion holes 122 of the top plate 12, and a screw fastening mechanism by the screw member 124. Thus, the top plate 12 is attached to the 1 st bracket 13 together with the protruding piece 1131 of the outer frame 11.

further, the power supply portion 172 is attached to the 1 st bracket 13 by an attachment piece 135 provided on the attachment portion 131. For example, the power supply unit 172 is attached to the 1 st bracket 13 by the attachment member 1721, an insertion hole provided in the attachment piece 135, and a screw fastening mechanism by a screw member. For example, the wireless communication unit 173 is attached to the 1 st bracket 13 by an attachment piece 1322 provided to the side portion 132 and an attachment piece 1332 provided to the side portion 133. For example, the wireless communication unit 173 is attached to the 1 st bracket 13 by the attachment member 1731, insertion holes provided in the attachment pieces 1322 and 1332, and a screw fastening mechanism using a screw member.

As shown in fig. 5, side wall 112 and side portion 132 are separated from each other, and a gap is formed between side wall 112 and side portion 132. The side wall 113 and the side portion 133 are separated from each other, and a gap is formed between the side wall 113 and the side portion 133.

In addition, the 1 st cover 15 is mounted to the 1 st bracket 13 through a mounting groove 136 provided to the side portion 132 and a mounting groove 137 provided to the side portion 133. For example, a claw portion (not shown) of the 1 st cover 15 provided on the side of the side wall 112 is inserted through a gap between the side wall 112 and the side portion 132, and is engaged with a mounting groove 136 provided on the side portion 132. For example, a claw portion (not shown) of the 1 st cover 15 provided on the side of the side wall 113 is inserted through a gap between the side wall 113 and the side portion 133, and is engaged with the mounting groove 137 provided on the side portion 133. Thereby, the 1 st cover 15 is attached to the 1 st bracket 13. In this way, the housing box 10 can be improved in design by disposing the cover attachment mechanism in the outer frame 11.

The 2 nd bracket 14 is an iron bracket disposed on the other end side in the longitudinal direction of the outer frame 11. As shown in fig. 3, the 2 nd bracket 14 is provided along the inner surface of the bottom wall 111 and the inner surfaces of the pair of side walls 112 and 113 of the outer frame 11.

As shown in fig. 3 and 8, the 2 nd tray 14 includes a bottom portion 141 and a pair of side portions 142 and 143 continuous with the bottom portion 141 and opposed to each other. Fig. 8 is a perspective view showing a 2 nd bracket of the lighting device according to the embodiment. Further, a protruding piece 1421 protruding toward the side portion 143 is provided at a front end portion of the side portion 142 in a direction away from the bottom portion 141. Further, a protruding piece 1431 protruding toward the side portion 142 is provided at a front end portion of the side portion 143 in a direction away from the bottom portion 141.

As shown in fig. 3, the 2 nd bracket 14 is disposed along the inner surface of the outer frame 11. The top plate 12 is attached to the projecting piece 1122 of the side wall 112 and the projecting piece 1421 of the side portion 142. The top plate 12 is attached to the 2 nd bracket 14 through the insertion hole 123 provided in the portion of the top plate 12 that overlaps the protruding piece 1122 of the side wall 112. For example, the top plate 12 is attached to the 2 nd bracket 14 by the insertion hole provided in the projecting piece 1122 and the projecting piece 1421 at a position overlapping the insertion hole 123 of the top plate 12, and the screw fastening mechanism by the screw member 124.

the top plate 12 is attached to the protrusion 1132 of the side wall 113 and the protrusion 1431 of the side portion 143. In the top plate 12, the top plate 12 is attached to the 2 nd bracket 14 through the insertion hole 123 provided in the portion overlapping the protruding piece 1132 of the side wall 113. For example, the top plate 12 is attached to the 2 nd bracket 14 by the insertion hole provided in the protrusion piece 1132 and the protrusion piece 1431 at a position overlapping with the insertion hole 123 of the top plate 12, and the screw fastening mechanism by the screw member 124. Thus, the top plate 12 is attached to the 2 nd bracket 14 together with the protruding piece 1132 of the outer frame 11.

the power supply unit 172 is attached to the 2 nd bracket 14 by an attachment piece 145 provided on the bottom portion 141. For example, the power supply unit 172 is attached to the 2 nd bracket 14 via the attachment member 1722, an insertion hole provided in the attachment piece 145, and a screw fastening mechanism by a screw member.

As shown in fig. 5, the side wall 112 and the side portion 142 are separated from each other, and a gap is formed between the side wall 112 and the side portion 142. The side wall 113 and the side portion 143 are separated from each other, and a gap is formed between the side wall 113 and the side portion 143.

In addition, the 2 nd bracket 14 is attached with the 2 nd cover 16 through an attachment groove 146 provided in the side portion 142 and an attachment groove 147 provided in the side portion 143. For example, a claw portion (not shown) of the 2 nd cover 16 provided on the side of the side wall 112 is inserted into a gap between the side wall 112 and the side portion 142, and is engaged with a mounting groove 146 provided on the side portion 142. For example, a claw portion (not shown) of the 2 nd cover 16 provided on the side of the side wall 113 is inserted through a gap between the side wall 113 and the side portion 143, and is engaged with a mounting groove 147 provided on the side portion 143. Thereby, the 2 nd cover 16 is attached to the 2 nd bracket 14. In this way, the housing box 10 can be improved in design by disposing the cover attachment mechanism in the outer frame 11.

As described above, in the present embodiment, since the outer frame 11 in the storage box 10 is formed by bending a thin aluminum metal plate, the outer frame 11 can be easily formed without using a precise metal mold while suppressing the cost as compared with a structure in which the outer frame 11 is formed of die-cast aluminum. Further, since the 1 st bracket 13 and the 2 nd bracket 14 made of iron are fixed to both end portions in the longitudinal direction of the outer frame 11 in the housing box 10, the outer frame 11 can be formed by bending a thin aluminum metal plate to reduce the weight, and the position of the outer frame 11 where strength is required is reinforced by the 1 st bracket 13 and the 2 nd bracket 14 made of iron, thereby ensuring sufficient strength. Further, by covering both end surfaces of the outer frame 11 in the longitudinal direction with the 1 st cover 15 and the 2 nd cover 16, the design property can be improved. The housing box 10 may cover both end surfaces of the outer frame 11 in the longitudinal direction by bending an aluminum metal plate as the outer frame 11.

From here, the support of the support object including the lamp body 30 by the housing box 10 and the structure of the support object will be described. The housing box 10 supports a support object including the lamp body 30 on the bottom wall 111 side. For example, the housing box 10 supports the arm 20 and the lamp body 30 as a support target. As shown in fig. 9 and 10, the 1 st turning part 40 provided in the connecting part 21 of the arm 20 is attached to the attachment part 131 of the 1 st bracket 13 of the storage box 10. Fig. 9 is a perspective view showing a connection portion where the housing box and the arm of the illumination device according to the embodiment are connected. Fig. 10 is a perspective view showing the inside of the connecting portion of the arm of the illumination device according to the embodiment.

The 1 st rotating part 40 includes: a 1 st shaft 41, a 1 st member 42, a ring member 43, a 2 nd member 44, and a 1 st base plate 45. The 1 st shaft 41 is formed in a cylindrical shape and has an end 411 having an outer diameter larger than the other portion.

The 1 st member 42 is formed in a cylindrical shape from a metal material. For example, the 1 st member 42 uses aluminum. The 1 st member 42 is provided with insertion holes 421 to 424 along the peripheral end of the bottom surface. For example, insertion holes 421 to 424 are provided at equal intervals on the peripheral end of the bottom surface of the 1 st member 42. The 1 st member 42 is provided with projections 425 and 426 projecting from the peripheral end of the bottom surface. For example, a pair of projections 425 and 426 are provided on the circumferential end of the bottom surface of the 1 st member 42 at positions sandwiching the shaft. The 1 st stem 41 is inserted into the 1 st member 42 from the other end 412 side opposite to the one end 411. Further, the other end portion 412 of the 1 st shaft 41 protrudes from the 1 st member 42. As shown in fig. 10, the 1 st member 42 has an inner diameter larger than the outer shape of the 1 st stem 41, and a bearing 413 is disposed between the 1 st member 42 and the 1 st stem 41. Further, one end 411 of the 1 st shaft 41 is disposed on the bearing 413. Thereby, the 1 st shaft 41 is rotatably disposed in the housing box 10 and the 1 st member 42.

As shown in fig. 9, the 1 st stem 41 is disposed such that one end 411 is inserted through the opening 134 of the 1 st bracket 13 and the opening 18 of the outer frame 11. The 1 st member 42 is attached to the bottom wall 111 of the outer frame 11 and the attachment portion 131 of the 1 st bracket 13 by a screw member 138. For example, the 1 st member 42 is attached to the frame 11 and the 1 st bracket 13 by screwing the screw member 138 inserted through the insertion hole 181 of the frame 11 and the insertion hole 1311 of the 1 st bracket 13 to the insertion hole 421. For example, the 1 st member 42 is attached to the outer frame 11 and the 1 st bracket 13 by screwing the screw member 138 inserted through the insertion hole 182 of the outer frame 11 and the insertion hole 1312 of the 1 st bracket 13 to the insertion hole 422.

For example, the 1 st member 42 is attached to the outer frame 11 and the 1 st bracket 13 by screwing the screw member 138 inserted through the insertion hole 184 of the outer frame 11 and the insertion hole 1314 of the 1 st bracket 13 to the insertion hole 423. For example, the 1 st member 42 is attached to the outer frame 11 and the 1 st bracket 13 by screwing the screw member 138 inserted through the insertion hole 185 of the outer frame 11 and the insertion hole 1315 of the 1 st bracket 13 to the insertion hole 424.

For example, the 1 st member 42 is fixed in position with respect to the outer frame 11 and the 1 st bracket 13 by inserting the protrusion 425 into the insertion hole 183 of the outer frame 11 and the insertion hole 1313 of the 1 st bracket 13. For example, the 1 st member 42 is fixed in position with respect to the outer frame 11 and the 1 st bracket 13 by inserting the protrusion 426 into the insertion hole 186 of the outer frame 11 and the insertion hole 1316 of the 1 st bracket 13. Thereby, the 1 st member 42 is attached to the frame 11 and the 1 st bracket 13.

In addition, the 2 nd member 44 has: a bottomed cylindrical holding portion 441 formed so that the inner diameter is larger than the outer diameter of the 1 st member 42; and a gear portion 442 which is a cylinder having a diameter smaller than that of the holding portion 441 provided on the bottom wall 4441 side of the holding portion 441 and has a gear formed on the outer periphery thereof. For example, the 2 nd member 44 is formed of a resin material or the like. As shown in fig. 11 and 12, the 1 st member 42 is disposed in the holding portion 441 of the 2 nd member 44 and attached to the 2 nd member 44. Fig. 11 is a perspective view showing the inside of a connecting portion of an arm of the illumination device according to the embodiment. Fig. 12 is a plan view showing the inside of the connection portion of the arm of the illumination device according to the embodiment.

As shown in fig. 12, the inside of the holding portion 441 is communicated with the inside of the gear portion 442, and the 1 st shaft 41 is inserted into the 2 nd member 44. The 2 nd member 44 can be attached to the 1 st member 42 by screwing the screw member 443 to the insertion hole provided in the back surface of the bottom surface of the 1 st member 42 on which the insertion holes 421 to 424 are provided and the insertion hole provided in the bottom wall 4441 of the holding portion 441. In this way, the 1 st member 42 made of a metal material is used as a coupling portion to the storage box 10, and the 2 nd member 44 made of a resin material is used as a gear portion, whereby the strength of a portion to which an external force generated by rotation or the like is applied can be maintained, and weight reduction can be achieved.

As shown in fig. 12, the 1 st shaft 41 has the gear portion 442 of the 2 nd member 44 inserted therein, and the other end portion 412 protrudes from the 2 nd member 44. For example, by disposing the other end portion 412 of the 1 st stem 41 in a holding portion (not shown) provided in the connecting portion 21, the 2 nd member 44 is inserted through the 1 st stem 41 in a state where the position of the 1 st shaft 41 in the rotational direction of the 1 st rotational axis is restricted with respect to the arm 20. For example, the 1 st shaft 41 is inserted through the 2 nd member 44 in a state where the position of the 1 st shaft in the rotational direction of the 1 st rotational shaft is restricted with respect to the arm 20 by the circumferential side surfaces 4121 and 4122 formed in the other end portion 412 abutting against a restricting surface (not shown) provided in the coupling portion 21 from the rotational direction of the 1 st rotational shaft. Thereby, the 1 st shaft 41 rotates about the 1 st rotation axis together with the arm 20.

Further, a cylindrical ring member 43 is disposed along the outer periphery of the holding portion 441 of the 2 nd member 44. The ring member 43 is formed with an inner diameter larger than an outer diameter of the holding portion 441. The ring member 43 is restricted from rotating together with the 2 nd member 44 by a predetermined mechanism in the rotational direction of the 1 st rotational shaft with respect to the 2 nd member 44. For example, the ring member 43 is fitted with a projection piece (not shown) projecting from the outer periphery of the holding portion 441 in a notch groove (not shown) formed in the inner periphery thereof, thereby regulating the position of the 2 nd member 44 in the rotational direction of the 1 st rotational shaft. The protrusion 431 provided on the plane of the ring member 42 substantially has a stopper function with respect to the connection portion 21 by coming into contact with a protrusion (not shown) of the connection portion 21.

As shown in fig. 10, the 1 st base plate 45 is disposed in the coupling portion 21 and attached to the arm 20 by screwing or the like. A 1 st switch 46 is provided on the 1 st base plate 45 at a position along the outer peripheral surface of the ring member 43. For example, the 1 st switch 46 is provided such that the lever 461 protrudes toward the ring member 43 side. For example, the lever 461 of the 1 st switch 46 is provided to protrude into a regulating groove (not shown) cut in the circumferential direction in the circumferential wall of the ring member 43. Here, the lever 461 of the 1 st switch 46 is rotated by both end portions in the circumferential direction of the restriction groove of the ring member 43, and the limit of the set rotation angle is detected, and used for motor control such as stopping the operation of the 1 st motor 47. For example, the 1 st base plate 45, that is, the arm 20 passes through the 1 st switch 46 and the restricting groove of the ring member 43, and the rotation angle in the rotation direction of the 1 st rotation shaft is set to a desired range based on the circumferential range of the restricting groove.

in addition, the 1 st rotation unit 40 has a 1 st motor 47 as a 1 st driving source. As shown in fig. 10, the 1 st motor 47 is mounted to the 1 st base plate 45. For example, the 1 st motor 47 uses a stepping motor.

Further, a gear 472 is attached to an output rotating shaft 471 of the 1 st motor 47. A gear 472 attached to an output rotation shaft 471 of the 1 st motor 47 meshes with the large diameter gear 473. A small diameter gear 475 is attached to a rotating shaft 474 to which a large diameter gear 473 is attached. That is, the large diameter gear 473 and the small diameter gear 475 rotate about the rotation shaft 474. Further, the large diameter gear 473 and the small diameter gear 475 may be integrally formed. For example, rotation axes such as the output rotation axis 471 and the rotation axis 474 are also referred to as axes.

Further, the small-diameter gear 475 meshes with the large-diameter gear 476. A small-diameter gear 478 is attached to the rotation shaft 477 to which the large-diameter gear 476 is attached. That is, the large diameter gear 476 and the small diameter gear 478 rotate about the rotation shaft 477. Further, the large-diameter gear 476 and the small-diameter gear 478 may be integrally formed.

The small-diameter gear 478 meshes with the gear portion 442 of the 2 nd member 44. As described above, the 2 nd member 44 is attached to the 1 st member 42, and the 1 st member 42 is attached to the storage box 10. Therefore, the small-diameter gear 478 moves along the gear portion 442 in accordance with the output of the 1 st motor 47. Thereby, the arm 20 rotates about the 1 st rotation axis in accordance with the output of the 1 st motor 47.

As shown in fig. 12, an idler gear 48-1(48) as a target gear is attached to the rotation shaft 477. For example, an idler gear 48-1 is mounted between the large diameter gear 476 and the 1 st base plate 45. The idler gear 48-1 has the same configuration as an idler gear 48-2 described later, although it is disposed at a different position, and therefore, the idler gears 48-1 and 48-2 will be referred to as an idler gear 48 hereinafter without being particularly described differently.

Further, a distal end portion of the rotation shaft 477 on the side where the idler gear 48-1 is attached is inserted through an insertion hole provided in the 1 st base plate 45. As shown in fig. 13, the idler gear 48 includes a gear portion 481 formed with a gear and a flange portion 482 having a larger diameter than the gear portion 481. Fig. 13 is a perspective view showing a relationship between the biasing portion and the counter gear in the illumination device according to the embodiment. For example, idler gear 48-1 is arranged such that flange portion 482 faces large diameter gear 476 and gear portion 481 faces first base plate 45. Further, damping grease is provided between idler gear 48-1 and rotation shaft 477. This can generate viscous resistance between the idler gear 48-1 and the rotary shaft 477.

As shown in fig. 12, gear portion 481 of idler gear 48-1 meshes with large diameter gear 473. In this way, the idler gear 48-1 meshes with the large-diameter gear 473 that is a gear of the path through which the driving force is transmitted from the 1 st motor 47 as the driving source to the housing box 10 as the support portion. In other words, the idler gear 48-1 meshes with the large-diameter gear 473 on the path of the driving force transmitted from the 1 st motor 47 to the gear portion 442 of the 2 nd member 44 attached to the housing case 10.

As shown in fig. 12, a biasing portion 49-1(49) that biases the idler gear 48 in the axial direction of the idler gear 48 is attached to the 1 st base plate 45. Thus, the biasing portion 49-1 is attached to the arm 20. Since the biasing portion 49-1 has the same configuration as the biasing portion 49-2 described later, although the arrangement position is different from that of the biasing portion 49-1, 49-2, the biasing portion 49 will be described as the biasing portion 49 without any particular distinction.

The biasing portion 49 includes a mounting portion 491 and an upright portion 492 erected from one end of the mounting portion 491 as a base portion. The biasing portion 49 has an extending portion 493 extending from the tip of the standing portion 492 in a direction intersecting the standing direction of the standing portion 492. The extension 493 has: a disk-shaped insertion portion 494 having a through hole at the center; and a pair of wrists 495, 495 extending along an outer periphery of the insertion portion 494.

As shown in fig. 12 and 13, the biasing portion 49-1 is disposed such that the extension portion 493 is along the flange portion 482 side of the idler gear 48. For example, the extension 493 of the biasing portion 49-1 is disposed between the large-diameter gear 476 and the idler gear 48, and the rotation shaft 477 is inserted into a through hole of the insertion portion 494. The pair of arm portions 495 and 495 abuts against the flange portion 482 of the idler gear 48 as an abutting portion. Specifically, the pair of arm portions 495 and 495 abuts an outer peripheral end portion of the flange portion 482.

The biasing portion 49 biases the idler gear 48 in the direction opposite to the direction in which the standing portion 492 extends from the mounting portion 491 through the pair of arm portions 495, 495. The biasing portion 49 biases the idler gear 48 in the axial direction of the idler gear 48. The biasing portion 49 biases the idler gear 48 in the axial direction so as to press the idler gear 48 against the 1 st base plate 45 via the pair of arm portions 495 and 495.

as described above, in the configuration in which the biasing portion 49-1 is provided in the lighting device 1 and the idler gear 48 is biased in the axial direction by the biasing portion 49-1, sliding resistance is generated between the idler gear 48 and the 1 st base plate 45 and rotation is made difficult, and therefore mechanical holding force can be generated. As described above, when the stepping motor is used as the 1 st motor 47, the position of the rotor is controlled by the magnetic field during power supply, so that the gear 472 attached to the output rotating shaft 471 of the 1 st motor 47 and the large diameter gear 473 can be held at the meshing position, and the pitch angle of the lighting device 1 can be held at a desired position. On the other hand, when the supply of electric power is stopped (when no magnetic field is generated), the mechanical position holding force may be reduced as compared with the case of the supply of electric power. Here, if the mechanical position holding force is reduced, the posture of the lighting device 1 is inclined toward the center of gravity of the lamp body 30, and there is a concern about stability of the operation of the lighting device 1. Such an adverse effect due to the self weight of the lighting device 1 may also occur when vibration occurs at the mounting position of the lighting device 1. In this respect, according to the configuration in which the biasing portion 49-1 is provided in the lighting device 1 and the idle gear 48 is biased in the axial direction by the biasing portion 49-1 as described above, the sliding resistance is generated between the idle gear 48 and the 1 st base plate 45, and the meshing position where the gear 472 attached to the output rotating shaft 471 of the 1 st motor 47 and the large diameter gear 473 mesh is maintained, whereby the mechanical position holding force can be improved. In addition, in the above configuration, there are also advantages as follows: the backlash of the gear at the time of rotation about the 1 st rotation axis can be suppressed, and the sound generated by the rotation can be suppressed.

As described above, according to the configuration in which the idler gear 48-1 provided outside the driving force transmission path of the 1 st motor 47 is used as the counter gear and the biasing portion 49-1 biases the counter gear, there is an advantage that the influence on the transmission of the driving force can be suppressed as compared with the configuration in which the counter gear is biased by the gear provided in the driving force transmission path. However, in order to suppress adverse effects due to the weight of the operation target (the illumination device 1), a gear provided in the transmission path of the driving force may be appropriately configured as the target gear to which the biasing portion 49-1 biases. In the configuration in which the gear provided in the transmission path of the driving force is used as the target gear and the biasing portion 49-1 biases the target gear, there is also an advantage that the mechanical position holding force is increased and the adverse effect due to the weight of the operation target is suppressed.

In a configuration in which the biasing portion 49 has a shape having the pair of arm portions 495 and 495, the pair of arm portions 495 and 495 is brought into contact with the outer peripheral end portion of the flange portion 482, and the idler gear 48 is biased at 2 positions, the idler gear 48 can be biased with a smaller force than, for example, a configuration in which the central portion of the flange portion 482 is biased (a configuration in which only 1 position is biased). In addition, in the configuration in which the biasing force is applied at 2 positions, even if the applied force is deviated from each other at 2 positions, the biasing force can be reliably applied. The biasing portion 49-1 is not limited to the 1 st base plate 45, and may be directly attached to the arm 20.

As shown in fig. 1 and 2, the 1 st arm portion 22 and the 2 nd arm portion 23 are continuous with the connection portion 21 of the arm 20. For example, the 1 st arm portion 22 and the 2 nd arm portion 23 are continuous with both end portions (both end portions in the left-right direction in fig. 1) of the coupling portion 21 of the arm 20. The arm 20 holds the lamp body 30 between the 1 st arm portion 22 and the 2 nd arm portion 23. Specifically, the arm 20 holds the lamp body 30 between the tip end of the 1 st arm portion 22 and the tip end of the 2 nd arm portion 23 so as to be rotatable about the 2 nd rotation axis. The arm 20 may have only the 1 st arm portion 22 without the 2 nd arm portion 23, and may hold the lamp body 30 by the 1 st arm portion 22 so as to be rotatable about the 2 nd rotation axis. In the lighting device 1, since the mechanism for rotating the lamp body 30 is provided in the 1 st arm portion 22, the structure in the 1 st arm portion 22 will be described in detail below. Further, the side of the connection portion 21 of the arm 20 may be one end portion of the arm 20, and the front end side of the 1 st arm portion 22 of the arm 20 may be the other end portion.

The structure of the arm 20 in the 1 st arm portion 22 will be described with reference to fig. 14 to 18. Fig. 14 is a front view of the inside of the 2 nd arm part of the lighting device according to the embodiment. Fig. 15 is a plan view showing a stopper portion of the illumination device according to the embodiment. Specifically, fig. 15 is a front view showing a main part of the brake unit 50 through the brake gear 54. Fig. 16 is a side view showing a main part in the 2 nd arm part of the lighting device according to the embodiment. Fig. 17 is a perspective view showing a relationship between the biasing portion and the counter gear in the illumination device according to the embodiment. Specifically, fig. 17 is a front view showing a main part of the 2 nd rotating part 60 penetrating the 2 nd base plate 611. Fig. 18 is a perspective view showing a main part in the 2 nd arm part of the lighting device according to the embodiment. Specifically, fig. 18 is a front view showing a main part of the 2 nd rotating portion 60 through the idler gear 48.

As shown in fig. 14, the 1 st arm portion 22 includes a brake portion 50 and a 2 nd pivot portion 60. As shown in fig. 16, the 2 nd rotation portion 60 has a 2 nd motor 61 as a 2 nd drive source. For example, the 2 nd motor 61 uses a stepping motor. In addition, the 2 nd motor 61 is mounted on the 2 nd base plate 611. A gear 613 is attached to the output rotating shaft 612 of the 2 nd motor 61. As shown in fig. 14, the 2 nd base plate 611 is disposed in the 1 st arm portion 22 and attached to the arm 20 by screwing or the like.

As shown in fig. 15 and 16, a gear 613 attached to the output rotary shaft 612 of the 2 nd motor 61 meshes with the large diameter gear 62. A small-diameter gear 622 is attached to the rotating shaft 621 to which the large-diameter gear 62 is attached. That is, the large-diameter gear 62 and the small-diameter gear 622 rotate about the rotation shaft 621. The large-diameter gear 62 and the small-diameter gear 622 may be integrally formed.

The small-diameter gear 622 meshes with the large-diameter gear 63. A small-diameter gear 632 is attached to the rotating shaft 631 to which the large-diameter gear 63 is attached. That is, the large-diameter gear 63 and the small-diameter gear 632 rotate about the rotation shaft 631. The large-diameter gear 63 and the small-diameter gear 632 may be integrally molded.

The small-diameter gear 632 meshes with external teeth 640 formed in a part of the outer peripheral surface of the attachment gear portion 64. For example, the mounting gear portion 64 is formed of a resin material or the like. As shown in fig. 18, the attachment gear portion 64 is attached to the housing portion 31 of the lamp body 30 by the screw members 641 and 642, and the lamp body 30 rotates together with the rotation of the attachment gear portion 64. Thereby, the lamp body 30 rotates about the 2 nd rotation axis in accordance with the output of the 2 nd motor 61.

As shown in fig. 17, an idler gear 48-2 as a target gear is attached to a rotary shaft 631 to which the large-diameter gear 63 is attached. For example, an idler gear 48-2 is mounted between the large diameter gear 63 and the 2 nd base plate 611. Further, the distal end portion of the rotary shaft 631 on the side where the idler gear 48-2 is attached is inserted through the insertion hole provided in the 2 nd base plate 611. As described above, idler gear 48-2 has gear portion 481 and flange portion 482. For example, idler gear 48-2 is arranged such that flange portion 482 faces large-diameter gear 63 and gear portion 481 faces 2 nd base plate 611. Damping grease is provided between idler gear 48-2 and rotary shaft 631. This can generate viscous resistance between idler gear 48-2 and rotary shaft 631.

As shown in fig. 16, the gear portion 481 of the idler gear 48-2 meshes with the large diameter gear 63. In this way, the idler gear 48-2 meshes with the large-diameter gear 63, which is a gear of a path through which the driving force is transmitted from the 2 nd motor 61 as a driving source to the lamp body 30 as an operation target. In other words, the idler gear 48-2 meshes with the large diameter gear 63 of the path through which the driving force is transmitted from the 2 nd motor 61 to the mount gear portion 64 mounted to the lamp body 30.

As shown in fig. 17, a biasing portion 49-2 that biases the idler gear 48-2 in the axial direction of the idler gear 48-2 is attached to the 2 nd base plate 611. Thus, the biasing portion 49-2 is attached to the arm 20.

As shown in fig. 17 and 18, the biasing portion 49-2 biases the idler gear 48-2 in the axial direction via the pair of arm portions 495, 495 so as to press the idler gear 48-2 against the 2 nd base plate 611.

As described above, in the configuration in which the biasing portion 49-2 is provided in the lighting device 1 and the idler gear 48-2 is biased in the axial direction by the biasing portion 49-2, the sliding resistance is generated between the idler gear 48-2 and the 2 nd base plate 611, and the rotation is made difficult, so that the mechanical holding force can be generated. As described above, when the stepping motor is used as the 2 nd motor 61, the position of the rotor is controlled by the magnetic field at the time of supplying the electric power, and the meshing position where the gear 613 attached to the output rotary shaft 612 of the 2 nd motor 61 meshes with the large diameter gear 62 can be maintained. On the other hand, when the supply of electric power is stopped (when no magnetic field is generated), the mechanical position holding force may be reduced as compared with the case of the supply of electric power. In this respect, according to the configuration in which the biasing portion 49-2 is provided in the lighting device 1 and the idler gear 48-2 is biased in the axial direction by the biasing portion 49-2 as described above, the sliding resistance is generated between the idler gear 48-2 and the 2 nd base plate 611, and the meshing position where the gear 613 attached to the output rotary shaft 612 of the 2 nd motor 61 and the large diameter gear 62 mesh with each other is maintained, whereby the mechanical position holding force can be increased. In addition, in the above configuration, there are also advantages as follows: the backlash of the gear at the time of rotation about the 2 nd rotation axis can be suppressed, and the sound generated by the rotation can be suppressed.

As described above, according to the configuration in which the idler gear 48-2 provided outside the driving force transmission path of the 2 nd motor 61 is used as the counter gear and the biasing portion 49-2 biases the counter gear, there is an advantage that the influence on the transmission of the driving force can be suppressed as compared with the configuration in which the counter gear is biased by the gear provided in the driving force transmission path. On the other hand, in order to suppress adverse effects due to the weight of the operation target (the illumination device 1), a gear provided in the transmission path of the driving force can be appropriately configured to be the target gear to which the biasing portion 49-2 biases. In the configuration in which the gear provided in the transmission path of the driving force is used as the target gear and the biasing portion 49-2 biases the target gear, there is also an advantage that the mechanical position holding force is increased and the adverse effect due to the weight of the operation target is suppressed.

the biasing portion 49-2 is not limited to the 2 nd base plate 611, and may be directly attached to the arm 20. The target gear to be urged by the urging unit 49-2 is not limited to the idler gear 48-2, and may be another gear.

The brake unit 50 will be described from here on. As shown in fig. 15, the brake unit 50 includes a holding solenoid 51 and a locking member 52. For example, the brake unit 50 is disposed on the rear surface side of the 2 nd base plate 611 on which the 2 nd motor 61 is provided. A spring member 53 and a brake gear 54 as a counter gear are provided on the rear surface side of the 2 nd base plate 611. One end side of the spring member 53 is locked to the hook portion 6111 of the 2 nd base plate 611. The brake gear 54 is attached to the output rotary shaft 612 of the 2 nd motor 61. The braking gear 54 is disposed on the arm 20 and rotates together with the rotation of the lamp body 30. The target gear of the braking unit 50 is not limited to the braking gear 54, and may be another gear.

The holding solenoid 51 is attached to the 2 nd base plate 611, and moves the shaft 511 forward and backward in response to the supply of electric power. The advancing and retreating direction of the shaft portion 511 is exemplified by the left-right direction in fig. 15. Specifically, when the supply of electric power is stopped, the holding solenoid 51 advances the shaft 511 in the forward and backward direction at the position shown in fig. 15. On the other hand, when power is supplied, the holding solenoid 51 moves the shaft 511 backward in the forward and backward direction so that the tip of the shaft 511 moves leftward with respect to the position shown in fig. 15. In the following description, the position of shaft 511 when the supply of electric power is stopped is defined as the 1 st position of shaft 511, and the position of shaft 511 when the supply of electric power is stopped is defined as the 2 nd position of shaft 511.

The locking member 52 includes a protrusion 520, insertion portions 521, 523, restricting pieces 522, 524, a hook portion 525, and a receiving portion 526. The insertion portions 521 and 523 of the locking member 52 have a shape with the longitudinal direction of the shaft portion 511. The restricting pieces 522 and 524 of the locking member 52 are inserted into the insertion portions 521 and 523, respectively, and attached to the 2 nd base plate 611. Here, the insertion portions 521 and 523 are movable relative to the restricting pieces 522 and 524 in the forward and backward direction of the shaft portion 511. Thus, the locking member 52 is attached to the 2 nd base plate 611 so as to be movable in the advancing/retreating direction of the shaft portion 511.

The protrusion 520 of the locking member 52 is inserted into the locking hole 512 of the shaft portion 511, and moves in the forward and backward direction of the shaft portion 511 together with the forward and backward movement of the shaft portion 511. Thereby, the locking member 52 moves in the advancing and retreating direction of the shaft portion 511 together with the advancing and retreating of the shaft portion 511. Hereinafter, the position of the locking member 52 corresponding to the case where the shaft portion 511 is located at the 1 st position of the shaft portion 511 is referred to as the 1 st position of the locking member 52, and the position of the locking member 52 corresponding to the case where the shaft portion 511 is located at the 2 nd position of the shaft portion 511 is referred to as the 2 nd position of the locking member 52.

Further, the other end side of the spring member 53, which is opposite to the one end side of the hook portion 6111 locked to the 2 nd base plate 611, is locked to the hook portion 525 of the locking member 52. Thereby, the spring member 53 biases the locking member 52 in the advancing direction of the shaft portion 511. In fig. 15, the spring member 53 urges the locking member 52 rightward.

Further, a gear is formed in the receiving portion 526 of the locking member 52, and is meshed with (in contact with) the braking gear 54 at the 1 st position of the locking member 52. Here, the braking gear 54 has a number of teeth that is more than 2 times the number of poles of the 2 nd motor 61. This can suppress the position deviation between the pulse and the gear before the stop of the supply of electric power and after the resumption of the supply of electric power. For example, the braking gear 54 is formed so that the number of teeth is 4 times the number of poles of the 2 nd motor 61.

When the stepping motor is used as the 2 nd motor 61, since the position of the rotor is controlled by the magnetic field at the time of supplying the electric power, the meshing position where the gear 613 attached to the output rotary shaft 612 of the 2 nd motor 61 and the large diameter gear 62 mesh with each other can be maintained, and thus the force for maintaining the angle around the 2 nd rotary shaft at a desired angle can be increased. On the other hand, when the supply of electric power is stopped (when no magnetic field is generated), the mechanical position holding force may be reduced as compared with the case of the supply of electric power. Here, if the mechanical position holding force is reduced, the posture of the lighting device 1 is inclined toward the center of gravity of the lamp body 30, and there is a concern about stability of the operation of the lighting device 1. Such an adverse effect due to the self weight of the lighting device 1 may also occur when vibration occurs at the mounting position of the lighting device 1. In this respect, in the configuration in which the spring member 53 biases the locking member 52 rightward as described above, the receiving portion 526 is biased toward the braking gear 54 when the supply of electric power is stopped, and the meshing position at which the gear 613 attached to the output rotary shaft 612 of the 2 nd motor 61 meshes with the large diameter gear 62 can be maintained, so that the force for maintaining the angle around the 2 nd rotary shaft at a desired angle can be increased. Further, when the electric power is supplied, the locking member 52 moves to the 2 nd position of the locking member 52 in accordance with the retraction of the shaft portion 511, and the engagement (contact) between the receiving portion 526 and the braking gear 54 is released, so that the braking portion 50 can be prevented from interfering with the rotation of the lamp body 30 about the 2 nd rotation axis.

The structure and rotation of the lamp body 30 will be described from here on. As shown in fig. 1 and 2, the lamp body 30 includes a housing portion 31, a holding portion 32, a cover portion 33, and a heat dissipation portion 34. The lamp body 30 includes, for example, an led (light Emitting diode) disposed on the substrate 100 as a light source to be changed in direction. That is, the lamp body 30 is a lamp body capable of changing the irradiation direction.

As shown in fig. 18, a 3 rd motor 65 is disposed in the mounting gear portion 64. Thus, the 3 rd motor 65 is disposed in the 1 st arm portion 22 of the arm 20. As shown in fig. 19, the output rotation shaft 651 of the 3 rd motor 65 protrudes into the housing 31 of the lamp body 30. Fig. 19 is a perspective view showing a main part of a driving mechanism of a 3 rd motor of the lighting device according to the embodiment. The output rotation shaft 651 of the 3 rd motor 65 protrudes into the case 31 through an insertion hole of a 3 rd base plate 652 disposed on the inner side of the case 31 coupled to the 1 st arm 22.

A gear 653 attached to the output rotation shaft 652 of the 3 rd motor 65 meshes with the large diameter gear 654. A worm 656 is attached to the rotating shaft 655 to which the large-diameter gear 654 is attached. That is, the large-diameter gear 654 and the worm 656 rotate about the rotation shaft 655. The large-diameter gear 654 and the worm 656 may be formed integrally.

The worm 656 meshes with the worm gear 66. A gear 662 is attached to the rotating shaft 661 to which the worm wheel 66 is attached. That is, the worm wheel 66 and the gear 662 rotate around the rotation shaft 661.

Further, the gear 662 meshes with one end portion side of the gear 67. The gear 67 is attached to the rotating shaft 671, and the other end side of the gear 67 is inserted into the reflection portion 90 through the insertion hole 711 of the rotation restricting portion 70.

As shown in fig. 20, the 2 nd arm portion 23 is connected to the housing portion 31 of the lamp body 30 on the opposite side of the connection portion with the 1 st arm portion 22. Fig. 20 is a perspective view showing a main part of the 2 nd arm part of the lighting device according to the embodiment.

A cylindrical coupling member 231 is provided at a coupling portion between the case portion 31 and the 2 nd arm portion 23. The coupling member 231 has a pair of protruding portions 232, 232 that protrude toward the 2 nd arm portion 23 side. Further, a 3 rd switch 233 is provided in the 2 nd arm portion 23 at a position along the outer peripheral surface of the connecting member 231. For example, the 3 rd switch 233 is provided such that the lever 234 protrudes toward the coupling member 231 along the plane of the coupling member 231. For example, the lever 234 of the 3 rd switch 233 is provided so as to protrude to a position where the protruding portions 232, 232 of the coupling member 231 overlap with each other in the circumferential direction of the coupling member 231. Here, the 3 rd switch 233 has a lever 234 that is rotated by the protruding portions 232, 232 of the coupling member 231, and detects the limit of the set rotation angle, thereby performing motor control for stopping the operation of the 1 st motor 47. For example, the 1 st base plate 45, that is, the arm 20, is rotated by the 3 rd switch 233 and the protruding portions 232, 232 of the coupling member 231 within a range of approximately 180 ° about the 2 nd rotation axis of the lamp body 30.

Next, the structure of the lamp body 30 will be described with reference to fig. 21. Fig. 21 is a perspective view showing a lamp body of the lighting device according to the embodiment. As shown in fig. 21, the heat dissipation portion 34 has a plurality of heat dissipation fins 341 and is attached to the surface of the substrate 100 opposite to the surface from which light is radiated. In the example shown in fig. 21, the heat dissipation portion 34 is attached to the holding portion 32 by an attachment mechanism such as screwing. In addition, the above is an example, and the attachment mechanism for attaching the heat radiating portion 34 to the holding portion 32 may be any attachment mechanism.

From here on, the structure of the zoom mechanism will be described with reference to fig. 22 to 26. Fig. 22 is a plan view showing a main part of a lamp body of the lighting device according to the embodiment. Specifically, fig. 22 is a plan view of the heat dissipation portion 34 removed to show the zoom mechanism, and viewed from the heat dissipation portion 34 side. For example, fig. 22 shows a surface side of the substrate 100 attached to the heat dissipation portion 34. Fig. 23 is a perspective view showing a holding portion of the illumination device according to the embodiment. Fig. 24 is a perspective view showing an aiming portion of the illumination device according to the embodiment. Fig. 25 is a perspective view showing a rotation portion of the illumination device according to the embodiment. Fig. 26 is a partial perspective view showing a zoom mechanism of the illumination device according to the embodiment.

as shown in fig. 22, the rotation restricting portion 70, the aiming portion 80, and the reflecting portion 90 are disposed in the holding portion 32. A disk-shaped cover 33 is attached to an opening portion (front portion in fig. 1) of the holding portion 32. The cover 33 protects the inside of the holding portion 32.

The rotation restricting portion 70 includes a disk-shaped base portion 71 having an opening at the center thereof, and a plurality of claw portions 72, 72 projecting from the peripheral wall of the base portion 71 in the axial direction of the base portion 71. In the example shown in fig. 23, 2 claw portions 72, 72 project from the peripheral wall of the base portion 71 in the axial direction of the base portion 71. For example, 2 claw portions 72, 72 are provided at 180 ° intervals along the outer periphery of the base portion 71. Further, a substrate 100 is disposed in the opening of the base 71. That is, the substrate 100 is disposed in the base portion 71 of the rotation restricting portion 70 such that the light emitting surface faces the protruding direction of the claw portions 72, 72. For example, the substrate 100 is held by a holding member 101 such as a COB (Chip On Board) holder. Further, a seal member may be provided on the outer peripheral portion of the holding member 101. Further, a 3 rd switch 73 is provided on the base portion 71 of the rotation restricting portion 70.

In addition, the base portion 71 of the rotation restricting portion 70 is provided with protruding portions 712 and 713 that protrude in a direction opposite to the protruding direction of the pawl portions 72 and 72. The rotation restricting portion 70 is inserted through an insertion hole provided in the holding portion 32, and the rotation restricting portion 70 is attached to the holding portion 32 by an attachment mechanism such as a screw fastening. Thereby, the rotation of the rotation restricting portion 70 with respect to the holding portion 32 is restricted. As described above, the base portion 71 of the rotation restricting portion 70 is provided with the insertion hole 711, and the other end portion side of the gear 67 is inserted into the insertion hole 711. The other end side of the gear 67 inserted through the insertion hole 711 of the rotation restricting portion 70 meshes with the gear portion 912 of the reflection portion 90.

Further, insertion holes 714 and 715 are formed in the base portion 71 of the rotation restricting portion 70 along the circumferential direction. The screw members 7141 and 7151 are inserted into the insertion holes 714 and 715, respectively. The head of the threaded member 7141, 7151 is larger than the width of the insertion hole 714, 715, and the threaded member 7141, 7151 is inserted into the insertion hole 714, 715. The screw members 7141 and 7151 are attached to the attachment portions 914 and 915 of the reflection unit 90, respectively. Thereby, the reflection portion 90 can rotate relative to the rotation restricting portion 70 within a range in which the screw members 7141 and 7151 can move in the insertion holes 714 and 715. Further, since the gear 67 rotating in response to the driving of the 3 rd motor 65 meshes with the gear portion 912 of the reflection portion 90, the reflection portion 90 rotates in response to the driving of the 3 rd motor 65.

As shown in fig. 24, the sighting portion 80 has a cylindrical tube portion 81 and a flange portion 82 continuous with the tube portion 81. For example, an optical component (not shown) such as a lens is disposed in the flange 82. The cylindrical portion 81 of the sighting portion 80 is provided with a plurality of guide grooves 811 and 812 protruding from the outer circumferential surface of the cylindrical portion 81. In the example shown in fig. 24, 2 guide grooves 811 and 812 are provided at 180 ° intervals along the outer periphery of the cylindrical portion 81. That is, the pair of guide grooves 811 and 812 are provided so as to protrude at positions facing each other around the axis of the cylindrical portion 81 of the sighting portion 80.

Here, the guide grooves 811 and 812 of the aiming portion 80 are formed in a shape through which the claws 72 and 72 of the rotation restricting portion 70 are inserted, and the claws 72 and 72 of the rotation restricting portion 70 are inserted into the guide grooves 811 and 812 of the aiming portion 80, respectively. Thus, the aiming portion 80 can advance and retreat in the axial direction of the rotation restricting portion 70 through the guide grooves 811 and 812.

The inner circumferential surface of the cylindrical portion 81 of the aiming portion 80 is provided with a protrusion 813. For example, 3 protrusions 813 are provided at equal intervals along the inner circumference of the cylindrical portion 81 on the inner circumference of the cylindrical portion 81 of the aiming portion 80. For example, 3 protrusions 813 are provided at intervals of 120 ° along the inner circumference of the cylindrical portion 81. In the example shown in fig. 24, 3 protrusions 813 are provided at the upper end of the inner circumferential surface of the tube portion 81.

As shown in fig. 26, the reflection unit 90 is disposed in the aiming unit 80 so as to be rotatable with respect to the aiming unit 80. As shown in fig. 25, the reflection unit 90 has a reflection surface 91. For example, light from the light source is radiated from the opening portion of the reflection surface 91, and the reflection surface 91 reflects the light radiated from the light source.

An outer wall 94 protrudes from the outer peripheral end of the reflection surface 91 toward the rear surface side. In the example shown in fig. 25, the outer wall 94 is formed in a cylindrical shape protruding upward from the reflecting surface 91. Further, an inner wall 911 protrudes from the reflection surface 91 toward the rear surface side. In the example shown in fig. 25, the inner wall 911 protrudes upward from the vicinity of the middle between the opening of the reflecting surface 91 and the outer peripheral end to form a cylindrical shape. Further, a gear portion 912 is provided in a part of the outer peripheral surface of the inner wall 911. For example, the gear portion 912 is provided in a range in which the angle from the center of the inner wall 911 becomes 90 °.

Further, a plurality of grooves 943 formed in a spiral shape are provided on the outer peripheral surface of the outer wall 94 of the reflection portion 90. For example, 3 grooves 943 are provided at equal intervals along the outer periphery of the outer wall 94 of the reflection portion 90 on the outer periphery of the outer wall 94. For example, 3 slots 943 are provided at 120 ° intervals along the outer periphery of the outer wall 94.

here, the aiming portion 80 restricts the rotation about the axis of the cylindrical portion 81 by inserting the claws 72, 72 of the rotation restricting portion 70 into the guide grooves 811, 812. For example, in the case of fig. 26, the sighting part 80 is movable in a direction (vertical direction) along the axis of the cylindrical part 81, but is restricted from rotating about an axis extending in the vertical direction. On the other hand, the reflection unit 90 rotates about a direction (vertical direction) along the axis of the reflection unit 90 by the output of the 3 rd motor 65.

Therefore, the reflection portion 90 rotates, and the position of the projection portion 813 in the axial direction of the aiming portion 80 is regulated in accordance with the positional variation of the groove 943 of the reflection portion 90, and the position of the projection portion 813 in the axial direction is varied. Here, the sighting unit 80 converts rotation about the axis of the reflection unit 90 into movement in the axial direction. Thus, the aiming portion 80 advances and retreats in the axial direction in accordance with the rotation about the axis of the reflection portion 90. By the advance and retreat of the sighting unit 80 in the axial direction, the distance between the substrate 100 and the optical member provided in the flange 82 of the sighting unit 80 is changed, thereby realizing the zoom function.

In the present embodiment, the grooves 943 of the reflection unit 90 are provided in 3 pieces at intervals of 120 °, and are provided only in the range in which the sighting unit 80 advances and retracts. In addition, 3 projections 813 of the aiming portion 80 engaging with the grooves 943 of the reflection portion 90 are provided at intervals of 120 °. In this way, by setting the number of the grooves 943 of the reflection portion 90 to 3 and the number of the protrusions 813 of the aiming portion 80 to 3, the aiming portion 80 can be advanced and retracted in a balanced manner with 3 supporting points. The projection 813 of the aiming portion 80 may be formed to have a projection shape with the same length as the length of engagement with the groove 943 of the reflection portion 90.

Further, a pair of projecting portions 941, 942 projecting inward is formed on the inner peripheral surface of the outer wall 94. The 3 rd switch 73 attached to the base portion 71 of the rotation restricting portion 70 is disposed at a position where a rod (not shown) protrudes along the inner peripheral surface of the outer wall 94. Specifically, the 3 rd switch 73 is disposed at a position overlapping the projections 941 and 942 in the circumferential direction of the outer wall 94. Thus, the 3 rd switch 73 lever is rotated by one of the projections 941, 942 of the outer wall 94, and the limit of the set rotation angle is detected for motor control such as stopping the operation of the 3 rd motor 65. In the present embodiment, the 3 rd switch 73 and the projections 941 and 942 of the outer wall 94 set the rotation angle of the reflection unit 90 to a range of substantially 90 °.

As described above, the arm 20 of the lighting device 1 is rotated in the horizontal direction, and as a result, the irradiation direction (irradiation axis) can be rotated in the horizontal direction while maintaining the inclination angle with respect to the vertical line. Further, the description has been made separately for the horizontal rotation operation of the arm 20 by the 1 st motor 47 and the vertical rotation operation of the lamp body 30 by the 2 nd motor 61, but the control unit can control the 1 st motor 47, the 2 nd motor 61, and the 3 rd motor 65 in accordance with the operation of the remote control device by the operator. For example, the lighting device 1 can simultaneously perform the rotation operation of the arm 20 in the horizontal direction and the rotation operation of the lamp body 30 in the vertical direction.

according to the present embodiment, the lighting device 1 is configured by disposing the 1 st motor 47 for driving the arm 20 to rotate in the horizontal direction and the 2 nd motor 61 for driving the lamp body 30 to rotate in the vertical direction in the arm 20.

The present invention is not limited to the above embodiments. The present invention also includes a technical means configured by appropriately combining the above-described respective components. Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above-described embodiments, and various modifications are possible.

For example, the following configuration is possible. The control unit can be configured by installing a plurality of lighting apparatuses 1 on a ceiling or the like, connecting the lighting apparatuses 1 by wireless communication, and remotely operating the plurality of lighting apparatuses 1 simultaneously by one remote control apparatus. The control unit is not limited to remote operation by wireless communication, and may be connected to the lighting device 1 by a wired connection, for example, with an operation unit operated by an operator.

in the embodiment, the ceiling-hung type lighting device 1 is exemplified, but the invention can also be applied to a type hung from a wall surface, and the like. The 1 st motor 47 and the 2 nd motor 61 are not limited to the stepping motor, and a DC motor, a DC brushless motor, an AC motor, or the like can be applied. In this case, the rotation angle (angular displacement amount) of the arm 20 in the horizontal direction is equal to or equal to the rotation angle (angular displacement amount) of the lamp body 30 in the vertical direction, thereby simplifying the current control of the control unit. The light source is not limited to a light emitting element such as an LED, and may be another light source such as a krypton bulb.

The driving device is not limited to the lamp body 30 including the light source as shown in the illumination device 1 according to the embodiment, and may be used to change the orientation of any operation target. For example, the operation target may be a monitoring camera or the like. In this way, the operation target may be any operation target as long as the operation target can be applied to the drive device, for which the operation target is desired to be changed to a desired direction.

Description of reference numerals:

1 … lighting device (example of driving device); 10 … accommodating box (supporting part); 11 … outer frame; 12 … a top plate; 13 … bracket No. 1; 14 … bracket No. 2; 15 … cover 1; 16, 16 …, lid 2; 20 … arms; 21 … connecting part; 22 … arm No. 1; 23, 23 …, arm No. 2; 30 … lamp body (example of an operation object); 45 … 1 st base plate; 47 … 1 st motor (other driving source); 48-1 … idler gears (other gears); 481 … gear portion; 482 … flange portion; 49-1 … force application part (other force application part); 491 … mounting part (base); 492 … upright part (base); 494 … through part; 495 … wrist (abutment); 61 … (drive source) 2 nd motor; 611 …, 2 nd base plate; 48-2 … idler gear (subject gear); 49-2 … force application part; 50 … braking part; 51 … holding solenoid; 52 … stop member; 526 … receiver; 54 … locking gear (target gear).