阅读说明：本技术 一种可调焦的照明装置 (focusing lighting device ) 是由 沈惜强 张林川 张洪彬 谢潮东 赵志伟 于 2018-11-20 设计创作，主要内容包括：一种可调焦的照明装置,包括：基座(100)、光源模组(200)、配光元件(400)和调焦机构,基座(100)具有安装表面(120)和围绕安装表面(120)的环形侧壁(110)；光源模组(200)安装于基座(100)的安装表面(120)上；配光元件(400)和调焦机构相对固定并位于光源模组(200)的照射方向；调焦机构包括旋转环(300)和第一限位构件(610),旋转环(300)套设于基座(100)的环形侧壁(110)内侧,旋转环(300)的侧壁(330)设有第一螺纹导向槽(331),第一限位构件(610)固定在基座(100)上,具有第一限位部(612),与第一螺纹导向槽(331)配合,使旋转环(330)可相对基座(100)做旋转运动从而调节配光元件(400)与光源模组(200)之间的距离。(A focus-adjustable lighting device comprises a base (100), a light source module (200), a light distribution element (400) and a focusing mechanism, wherein the base (100) is provided with a mounting surface (120) and an annular side wall (110) surrounding the mounting surface (120), the light source module (200) is mounted on the mounting surface (120) of the base (100), the light distribution element (400) and the focusing mechanism are relatively fixed and positioned in the irradiation direction of the light source module (200), the focusing mechanism comprises a rotary ring (300) and a limiting member (610), the rotary ring (300) is sleeved on the inner side of the annular side wall (110) of the base (100), the side wall (330) of the rotary ring (300) is provided with a threaded guide groove (331), the limiting member (610) is fixed on the base (100) and is provided with a limiting part (612) which is matched with the threaded guide groove (331), so that the rotary ring (330) can rotate relative to the base (100) to adjust the distance between the light distribution element (400) and the light source module (200).)

The lighting device capable of focusing comprises a base, a light source, a light distribution element and a focusing mechanism, wherein the base is provided with an installation surface and an annular side wall surrounding the installation surface, the light source is installed on the installation surface of the base, the light guide member and the focusing mechanism are relatively fixed and are positioned in the irradiation direction of the light source, the focusing mechanism is characterized by comprising a rotating ring and a limiting member, the rotating ring is sleeved on the inner side of the annular side wall of the base, the side wall is provided with a -th threaded guide groove and a clamping groove positioned above and/or below the -th threaded guide groove, the limiting member is fixed on the base and is provided with a limiting part and a second limiting part, the limiting part is matched with the -th threaded guide groove, so that the rotating ring can rotate relative to the base to adjust the distance between the light distribution element and the light source, and the second limiting part is matched with the clamping groove to limit the rotating ring to perform stepping rotation movement.

2. The illumination device as claimed in claim 1, wherein the focus adjustment mechanism further comprises a second stopper member, a side wall of the rotary ring is provided with a second screw guide groove, and the second stopper member is fixed to the base and has an -th stopper portion engaging with the second screw guide groove.

3. A lighting device as recited in claim 1, wherein: the second limiting part is matched with the clamping groove to limit the rotating ring to do equidistant stepping type rotating motion.

4. A lighting device as recited in claim 1, wherein: the second limiting part is matched with the clamping groove to limit the rotating ring to perform non-equidistant progressive rotating motion.

5. The lighting device as claimed in claim 1, wherein the th screw guide groove has a length of half or less of the circumference of the rotary ring.

6. The lighting device as claimed in claim 1, wherein the -th screw guide groove has a length of or more times the circumference of the rotary ring.

7. The lighting device as recited in claim 1, wherein said th limiting portion is parallel to said second limiting portion.

8. The lighting device as claimed in claim 1, wherein the -th limiting portion protrudes from the second limiting portion.

9. A lighting device as recited in claim 1, wherein: the second limiting part has elasticity.

10. The illumination device as recited in claim 1, wherein the slot comprises series of alternating concave and convex portions.

11. The lighting device as defined in claim 1, wherein said card slot comprises series of spaced apart recesses.

12. A lighting device as recited in claim 10 or claim 11, wherein: the width of the concave part is 1-20 mm.

13. A lighting device as recited in claim 10 or claim 11, wherein: the width of the concave part is 1-5 mm.

14. A lighting device as recited in claim 10 or claim 11, wherein: the width of the recesses is the same.

15. A lighting device as recited in claim 10 or claim 11, wherein: the width of the recess is gradually changed.

16. A lighting device as claimed in claim 10 or 11, wherein said -th screw guide groove has lower ends and upper ends, and the width of said recessed portion is gradually reduced from the lower end of said -th screw guide groove.

17. A lighting device as recited in claim 10 or claim 11, wherein said th limiting member has a th limiting portion located in said th threaded guide groove and a second limiting portion located in said lower recess, such that when the ring is rotated relative to the base, said th limiting portion of said limiting member is guided in said threaded guide groove to slide, and said second limiting portion moves from to adjacent lower recesses for each th rotation of said ring.

18. The lighting device as defined in claim 1, wherein said slots are formed by series of spaced ribs.

19. A lighting device as recited in claim 17, wherein: the ribs are distributed at equal intervals.

20. A lighting device as recited in claim 17, wherein: the spacing of the ribs is 1-20 mm.

21. The lighting device as claimed in claim 17, wherein the -th screw guide groove has lower ends and upper ends, and the ribs are gradually spaced from each other starting from the lower end of the -th screw guide groove.

22. The lighting device as defined in claim 1, wherein said locking groove intersects said -th thread guide groove.

23. A lighting device as recited in claim 1, wherein: the clamping groove is perpendicular to the mounting surface of the base.

24. A lighting device as recited in claim 1, wherein: when the rotating ring rotates relative to the base plate, the second limiting part and the clamping groove interact to make a sound.

25. The lighting device as claimed in claim 1, wherein the second position-limiting portion interacts with the locking groove to generate sounds every times of the rotating ring rotating in a stepwise manner.

26. A lighting device as recited in claim 1, wherein said -th limiting member is located on an inner side of said rotary ring.

27. The lighting device according to claim 1, wherein the height difference of the th screw guide groove is 20mm or less.

28. A lighting device as recited in claim 1, wherein: the light distribution element is a reflecting cup or a lens or the combination of the reflecting cup and the lens.

29. The illumination device as claimed in claim 1, wherein the rotating ring is rotating cover structure and is connected with the base.

30. A lighting device as recited in claim 1, wherein: the light source comprises an LED lamp bead and a reflection cup positioned above the LED lamp bead, and the reflection cup is fixed by a light-transmitting glass ring.

31. A lighting device as recited in claim 1, wherein: the light distribution element is a reflection cup, an opening is formed in the bottom of the reflection cup, and the light source penetrates through the opening and is located in the large reflection cup.

32. A lighting device as recited in claim 31, wherein: the light source comprises an LED chip, the focusing mechanism is adjusted to enable the reflection cup to move up and down, and when the reflection cup is located at the highest position, the bottom of the reflection cup is flush with the bottom of the LED chip.

Technical Field

The invention relates to the technical field of lamps, in particular to lighting devices capable of accurately focusing.

Background

The international commission on illumination (CIE europe) specifies that the angle from the center line of the light beam to the point where the intensity of the light beam decreases to 50% of the maximum intensity of the center line is the beam angle (as shown in fig. 1), which reflects the spot size and the intensity of the light beam of the luminaire, and the same light source will produce different lighting effects when different beam angles are used. In the lamp using field, the lamp is required to have different lighting effects according to different conditions. The zoom lamp can generate different lighting effects by adjusting the focal length, and can meet various lighting requirements under different conditions in the use field of the lamp.

The existing zoom lamp has the following defects: unstable focusing, low zooming precision, incapability of zooming precisely and the like.

Disclosure of Invention

The invention aims to provide lighting devices which are convenient to zoom accurately.

The adjustable-focus lighting device comprises a base, a light source, a light distribution element and a focusing mechanism, wherein the base is provided with an installation surface and an annular side wall surrounding the installation surface, the light source is installed on the installation surface of the base, the light guide member and the focusing mechanism are relatively fixed and located in the irradiation direction of the light source, the focusing mechanism comprises a rotating ring and an th limiting member, the rotating ring is sleeved on the inner side of the annular side wall of the base, the side wall is provided with a th threaded guide groove, the limiting member is fixed on the base and provided with a th limiting part which is matched with the th threaded guide groove, and the rotating ring can rotate relative to the base so as to adjust the distance between the light distribution element and the light source.

A clamping groove is arranged above and/or below the th thread guide groove, and the second limiting component is provided with a second limiting part which is matched with the clamping groove to limit the stepping rotary motion of the rotary ring.

The lighting device has the advantages that the relative position of the light distribution element and the light source is changed by rotating the rotating ring of the lighting device, so that the beam angle and the size of a light spot are changed, steps are further carried out, a clamping groove is arranged above or below the thread guide groove of the rotating ring, a second limiting part is provided to be matched with the clamping groove, so that the rotating ring is limited to do stepping rotary motion, the rotating radian of the rotating ring can be easily controlled, and the angle required by optics can be conveniently and accurately adjusted.

The lighting device of the invention can be a track spotlight, an AR lamp, a PAR (Parabolic aluminum reflector) lamp or a down lamp, etc. For example, the light beam angle of the track spotlight is 20 to 40 degrees.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification , illustrate embodiment of the invention and not limit the invention.

Fig. 1 is schematic diagrams illustrating beam angle definitions of conventional lighting devices.

FIG. 2 is a perspective view of illustrating embodiments of the lighting device.

FIG. 3 is a schematic view of exploded perspective views illustrating the embodiment.

FIG. 4 is an fragmentary perspective assembly illustrating the focus mechanisms of this embodiment.

FIG. 5 is a partial perspective view of illustrating the rotating rings of this embodiment.

FIG. 6 is a partial perspective view of illustrating the rotating rings of this embodiment.

Fig. 7 is an enlarged view of parts, illustrating the slot structure of this embodiment.

FIG. 8 is a partial isometric view of showing of the stop members of this embodiment.

Figure 9 is a partial isometric view of illustrating second stop members of this embodiment.

FIG. 10 is a schematic drawing in section of parts illustrating this embodiment.

FIG. 11 is a schematic drawing in section of parts illustrating this embodiment.

Fig. 12 is graphs illustrating the corresponding beam angle of the lighting device with the reflector cup in different positions.

Fig. 13 is graphs illustrating the variation of the beam angle and the peak light intensity of the lighting device in different positions of the reflector cup.

Fig. 14 is a perspective view of illustrating second embodiments of the lighting device.

Fig. 15 is a schematic view of exploded perspective structures illustrating the second embodiment.

Fig. 16 is a schematic view of partial cross-sections illustrating this second embodiment.

Fig. 17 is a schematic view of exploded perspective structures illustrating the third embodiment.

Fig. 18 is a schematic view of partial cross-sections illustrating the third embodiment.

Description of reference numerals:

100: a base, 110: a side wall of the base, 111: an outer side wall of the base, 120: a mounting surface of the base, 200: a light source module, 210: a light source circuit board, 220: a lamp bead, 230: a light-transmitting glass cylinder, 240: a small reflector cup, 300: a rotary ring, 310: an upper portion of the rotary ring, 311: an outer side wall of an upper portion, 320: a lower portion of the rotary ring, 321: an outer side wall of a lower portion, 330: an inner side wall of the rotary ring, 331: a lowest portion of a threaded guide groove, 331B: a highest portion of a threaded guide groove, 332: a second threaded guide groove, 340: a card slot, 341: a concave portion, 342: a convex portion or a rib, 400: a light distribution element, 410: a reflector cup, 420: a lens, 430: a buffer pad, 500: a power supply drive, 610, 620: a limiting member, 611, 621: a connecting portion of a limiting member, 612, 622: a limiting portion, 613: a second limiting portion.

Detailed Description

The structures, proportions, dimensions, and the like shown in the drawings and described in this specification are for illustrative purposes only and are not intended to limit the scope of the present invention, which is to be construed as unless otherwise specified or limited, and therefore do not have any technically significant meaning, and any structural modifications, changes in proportions, or adjustments of size, which do not affect the efficacy of the invention or which are within the scope of the invention as disclosed herein, are intended to be encompassed by the present invention.

As shown in fig. 2 to 3, the lighting device capable of focusing includes a base 100, a light source module 200, a light distribution element 300, a focusing mechanism, and a power driver 500. The base 100 has a mounting surface 120 and an annular sidewall 110 surrounding the mounting surface 120, the light source module 200 is mounted on the mounting surface 120 of the base, the light guide member 300 and the focusing mechanism are relatively fixed and located in the irradiation direction of the light source 200, and the power driver 500 is mounted at the bottom of the base 100.

In preferred embodiments, the light source module 200 may include a substrate 210, a light bead 220 and a small reflective cup 240, the light bead 220 is preferably an LED light bead, and the small reflective cup 240 mainly plays a role of anti-glare, preferably, a high-light-transmission glass ring 230 is disposed on the periphery of the light bead 220, the light bead 220 is located in the glass ring 230, the small reflective cup 240 is fixed above the light bead 220 through the glass ring 230, which is more reliable compared with a traditional rack-type fixing method, in embodiments, the diameter of the small reflective cup 240 is 10-50 mm, for example, 20-30 mm, which may achieve a better anti-glare effect, the glass ring 230 is preferably made of high-light-transmission quartz glass, the diameter is controlled at 10-50 mm, and the height is controlled at 3-20mm, for example, 5-10mm, which may achieve a better focusing effect.

As shown in FIG. 4, the focusing mechanism comprises a rotary ring 300 and a limiting member 610/620, as shown in FIG. 5, the rotary ring 300 is a hollow cylindrical structure having an upper portion 310 and a lower portion 320, and is sleeved inside the annular sidewall 110 of the base 100 through the lower portion 320, for example, the rotary ring 300 may be rotary cover structures and is sleeved inside the sidewall 110 of the base, preferably, the outer side 311 of the upper portion 310 protrudes outside 321 of the lower portion 320 and is substantially flush with the outer side 111 of the sidewall 110 of the base, step is further performed, the sidewall 330 of the rotary ring 300 is provided with a thread guide groove 331/332, the limiting member 610/620 may be fixed on the mounting surface 120 of the base, and the second limiting portion 611/621 of is provided, the third limiting portion 611/332 slides in the thread guide groove 331/332, so that the rotary ring 300 can make a rotary motion relative to the base 100 to adjust the distance between the light distribution element 400 and the light source module 200. preferably, the number of the thread guide grooves 331 is two or more, for example, each thread guide groove 331 preferably has a length , a length of the rotary ring 300 is preferably more than two, and is more favorable to reduce the peripheral length of the light beam difference of the rotary ring 300, and is more favorable to cause a high precision when the rotary angle of the rotary ring 300, and the rotary ring 300 is more favorable to cause a shake, and the rotary ring 300 is more favorable to be easily reduced by more favorable when the higher precision, and the range of the rotary ring 300 is.

In the preferred embodiments, at least of the thread guide grooves 331 are provided with the notches 340 above and/or below, as shown in fig. 8, the stop member 611 engaged with the thread guide grooves 331 further has a second stop portion 613, as shown in fig. 8, when the rotary ring 300 is rotated relative to the base 100, the second stop portion 613 interacts with the notches 340 to thereby limit the rotary ring 300 from stepwise rotational movement, the notches 340 intersect with the thread guide grooves 331 (i.e., the notches 340 are not parallel to the thread guide grooves 331), so as to ensure that when the rotary ring 300 is rotated relative to the base 100, interacts with the notches 340 when the second stop portion 613 and the notches 340 preferably rotate relative to each other, the notches 340 are perpendicular to the mounting surface 120 of the base, as shown in fig. 7, the notches 340 may be formed by alternately arranged notches 341 and protrusions 342 of series, the 2-stop portion 612 of the stop member 610 is located in the thread guide grooves 331, the second stop portion is located in the notches 341, 341 may be located in the groove 340, as shown in the groove 341, when the rotary ring 300 is rotated relative to the base 100, the linear movement, the linear spacing interval between the notches 340 may be equal to equal distances of the interval between the notches 99 mm, such as 3970 mm, preferably equal distances between the notches, preferably equal distances equal to equal distances equal to equal distances equal to equal distances between the equal distances between adjacent to equal distances between the notches, such as equal distances between the notches, which are equal distances between the notches, such as 3970 mm, preferably equal distances between the notches, such as indicated by equal distances between the notches, such as No. 7, preferably equal distances between the notches.

As shown in FIGS. 8 and 9, in embodiments, the stop member 610 and the second stop member 620 may further include a connecting portion 611/612 for connecting with the base 100. in , the stop portion 612/622 of the stop member may be a guiding post or a guiding bump, and the second stop portion 613 may be a column structure, a bump or a sheet structure.

Referring to fig. 10 and 11, the light distribution element 400 is an large reflector 400 fixedly connected to the upper portion 310 of the rotary ring 300 and erected above the light source module 200, and the bottom 401 thereof has an opening so that the light source module 200 is located in the large reflector, in the structure shown in fig. 10, the rotary ring 300 is rotated to the lowest position, at this time, the -th limiting position 612 is located at the 331B end of the screw guide groove 331, at this time, the light source module 200 is located in the reflector 400, and the bottom of the light bead 220 of the light source module 200 is higher than the bottom 401 of the reflector, and in the structure shown in fig. 11, the rotary ring 300 is rotated to the highest position, at this time, the -th limiting position 612 is located at the 331a end of the screw guide groove 331, and at this time, the bottom 221 of the light bead 220 of the light source module 200.

In the above-described illumination apparatus, the relative positions of the light distribution element 400 and the light source 200 can be changed by rotating the rotating ring 300 of the illumination apparatus, thereby changing the beam angle and the spot size. Specifically, through the adjustable screw thread guide way length of the design of rotatory ring 300, the accurate vertical height that converts into adjustable sets up draw-in groove 340 in screw thread guide way 331's top or below simultaneously, provides spacing portion 613 of second and this draw-in groove 340 cooperation, and then the rotatory ring of restriction is marching type rotary motion, can control the rotatory radian of rotatory ring very easily to the required angle of convenient accurate regulation optics.

FIG. 12 shows graphs of the light beam angles corresponding to different positions of the reflective cups of lighting devices, in which the height difference of the thread guide grooves 331 is about 6mm, that is, the adjustable vertical height of the rotary ring 300 is 6mm, and the adjustment range of the light beam angle is 20-40 degrees, taking the position where the bottom 401 of the reflective cup 400 is flush with the bottom 201 of the LED chip of the light source 200 as a reference point (0 point), that is, the position shown in FIG. 11, the rotary ring 300 is rotated downward to the position shown in FIG. 10, and the slope of the change curve of the light beam angle is gradually increased, and according to this curve, the pitch of the card slots 340 can be designed in 2 steps.

Fig. 14 to 16 show another kinds of focusing illumination devices, different from the illumination device shown in fig. 2 to 3, a light distribution element 400 of the illumination device shown in fig. 14 includes a reflective cup 410 and a lens 420, further steps can be performed, an elastic press ring 430 is further provided for fixing the reflective cup 410, and meanwhile, the light source module 200 is a -like lamp bead.

In the embodiments, the limit member is preferably made of a material different from that of the base when the base 100 is used as a heat sink, and in this case, the limit member may be independent parts are mounted on the base to simply achieve focusing, or in another embodiments, when the base 100 is separated from the heat sink of the lighting apparatus, the limit member may be formed with the base .

The above description is only an example of the present invention, and the claims of the present invention are not limited thereto. All equivalent changes and modifications made in accordance with the claims and the specification of the invention are within the scope of the present invention.