阅读说明：本技术 投影仪及其指示灯、指示灯的驱动方法 (Projector, indicator lamp thereof and driving method of indicator lamp ) 是由 王世强 胡震宇 于 2020-05-09 设计创作，主要内容包括：一种投影仪及其指示灯、指示灯的驱动方法,指示灯设置于投影仪上,指示灯包括基板和设置于基板上的多个灯组,每个灯组均包括红色灯珠、绿色灯珠和蓝色灯珠,基板用于与投影仪的驱动电路电连接,并将驱动电路的电信号传输给多个灯组,多个灯组根据电信号发光；其中,多个灯组根据投影仪的不同工作模式,每个灯组的红色灯珠、绿色灯珠和蓝色灯珠均不发光,或者,红色灯珠、绿色灯珠和蓝色灯珠的至少一个发光。通过控制各个灯组发不同的光,就能使得指示灯实现各种各样的颜色发光。同时,控制其中部分灯组发光、部分灯组不发光,就能实现指示灯的各种各样的显示效果,能够用于指示投影仪的不同工作模式。(A projector, an indicator lamp and a driving method of the indicator lamp are disclosed, wherein the indicator lamp is arranged on the projector and comprises a substrate and a plurality of lamp groups arranged on the substrate, each lamp group comprises a red lamp bead, a green lamp bead and a blue lamp bead, the substrate is used for being electrically connected with a driving circuit of the projector and transmitting an electric signal of the driving circuit to the plurality of lamp groups, and the plurality of lamp groups emit light according to the electric signal; wherein, a plurality of banks are according to the different mode of projecting apparatus, and red lamp pearl, green lamp pearl and blue lamp pearl of every bank do not all give off light, perhaps, at least one of red lamp pearl, green lamp pearl and blue lamp pearl is luminous. By controlling the light groups to emit different lights, the indicator light can emit lights in various colors. Meanwhile, part of the lamp groups are controlled to emit light, and part of the lamp groups do not emit light, so that various display effects of the indicator lamp can be realized, and the indicator lamp can be used for indicating different working modes of the projector.)

1. The indicator lamp of the projector is characterized in that the indicator lamp is arranged on the projector and comprises a substrate and a plurality of lamp groups arranged on the substrate, each lamp group comprises a red lamp bead, a green lamp bead and a blue lamp bead, the substrate is used for being electrically connected with a driving circuit of the projector and transmitting an electric signal of the driving circuit to the plurality of lamp groups, and the plurality of lamp groups emit light according to the electric signal; the plurality of lamp groups are respectively provided with a red lamp bead, a green lamp bead and a blue lamp bead which are all not luminous according to different working modes of the projector, or at least one of the red lamp bead, the green lamp bead and the blue lamp bead is luminous.

2. The indicator light of a projector according to claim 1, wherein said plurality of light groups are arranged in a sequentially nested annular array on said substrate, with one of said light groups being centrally disposed.

3. The method of driving the indicator lamp of the projector according to claim 2, wherein the substrate is divided into a plurality of circular regions which are sequentially nested from the center to the outer periphery, the plurality of lamp groups are disposed in the gaps between the circular regions and the adjacent circular regions, the lamp groups between each circular region and the adjacent circular region constitute a first lamp group sequence, and each first lamp group sequence includes at least one lamp group; and the indicator lights are lightened according to the first light group sequence as a unit.

4. The method of claim 3, wherein the indicator lights sequentially turn on the plurality of first light group sequences from a center to an outer circumference when the projector is in a breathing light mode, and sequentially turn off the plurality of first light group sequences from the outer circumference to the center when all of the first light group sequences are turned on; alternatively, the first and second electrodes may be,

the indicating lamp sequentially lights the first lamp group sequences from the outer periphery to the center, and when all the first lamp group sequences are lighted, the first lamp group sequences are sequentially extinguished from the center to the outer periphery.

5. The method of driving indicator lamps of a projector according to claim 3, wherein any adjacent first lamp group sequences are spaced apart by an equal distance.

6. The method of driving the indicator lamp of the projector according to claim 2, wherein the substrate is divided into a plurality of rectangular areas connected in sequence from a first side to a second side opposite to the first side, the plurality of lamp groups are arranged in the plurality of rectangular areas, the lamp groups in each of the rectangular areas constitute a second lamp group sequence, and each of the second lamp group sequences includes at least one of the lamp groups; the indicator lights are lit up in units of the second light group sequence.

7. The method for driving an indicator lamp of a projector according to claim 6, wherein the indicator lamp is in a blinking state when the projector is in a warning mode; when the initial state of the indicator light is a non-lighting state, the indicator light sequentially lights a plurality of second light group sequences from the first side to the second side, and when one second light group sequence is lighted, the second light group sequence which is adjacent to the second light group sequence and is lighted last is extinguished; alternatively, the first and second electrodes may be,

when the initial state of the indicator light is a lighting state, the indicator light sequentially turns off the plurality of second light group sequences from the first side to the second side, and when one second light group is turned off, the second light group sequence which is turned off and is adjacent to the second light group sequence is turned on.

8. The method of claim 7, wherein when the initial state of the indicator lamp is an off state and the plurality of second lamp group sequences are sequentially turned on from the first side to the second side, the operation is cycled by returning to the first side to turn on the second lamp group sequences again, or the operation is cycled by sequentially turning on the second lamp group sequences from the second side to the first side; alternatively, the first and second electrodes may be,

when the initial state of the indicator light is a lighting state and the second light group sequences are sequentially turned off from the first side to the second side, returning to the first side to turn off the second light group sequences again for circulation, or turning off the second light group sequences from the second side to the first side for circulation.

9. A projector comprising the indicator lamp according to any one of claims 1 to 2, which is driven using the driving method according to any one of claims 3 to 8.

10. The projector as claimed in claim 9, wherein the projector includes a central processing unit, a micro control unit and a light source driver electrically connected in sequence, the central processing unit issues a first command of a projector operation mode to the micro control unit, the micro control unit receives the first command and converts the first command into a second command, and the light source driver receives the second command and sends a control signal to the indicator light to drive the indicator light to light.

Technical Field

The invention belongs to the technical field of projectors, and particularly relates to a projector, an indicator lamp of the projector and a driving method of the indicator lamp.

Background

The existing indicator light of the projector only has the functions of indicating whether the projector is electrified or not and whether the projector has a video signal, and only has the display effects of a few colors such as white, red, blue and the like, and the functions and the visual effects are single.

Disclosure of Invention

The invention aims to provide a projector, an indicator lamp thereof and a driving method of the indicator lamp, which can realize multiple indication functions and have rich visual effects.

In order to realize the purpose of the invention, the invention provides the following technical scheme:

in a first aspect, an embodiment of the present invention provides an indicator light of a projector, where the indicator light is disposed on the projector, the indicator light includes a substrate and a plurality of light groups disposed on the substrate, each light group includes a red light bead, a green light bead, and a blue light bead, the substrate is configured to be electrically connected to a driving circuit of the projector, and transmit an electrical signal of the driving circuit to the plurality of light groups, and the plurality of light groups emit light according to the electrical signal; the plurality of lamp groups are respectively provided with a red lamp bead, a green lamp bead and a blue lamp bead which are all not luminous according to different working modes of the projector, or at least one of the red lamp bead, the green lamp bead and the blue lamp bead is luminous.

In one embodiment, the plurality of lamp sets are arranged on the substrate in a sequentially nested annular array, and one lamp set is arranged in the center.

In a second aspect, an embodiment of the present invention provides a driving method for indicator lamps of a projector according to the second embodiment of the first aspect, wherein the substrate is divided into a plurality of sequentially nested circular regions from the center to the outer periphery, the plurality of lamp groups are disposed in gaps between the circular regions and adjacent circular regions, each of the lamp groups between each of the circular regions and adjacent circular region forms a first lamp group sequence, and each of the first lamp group sequences at least includes one of the lamp groups; and the indicator lights are lightened according to the first light group sequence as a unit.

In one embodiment, when the projector is in a breathing lamp mode, the indicator lamp sequentially lights a plurality of first lamp group sequences from the center to the outer periphery, and when all the first lamp group sequences are lighted, the first lamp group sequences are sequentially extinguished from the outer periphery to the center; or the indicator lights sequentially turn on the plurality of first light group sequences from the outer periphery to the center, and after all the first light group sequences are turned on, the plurality of first light group sequences are sequentially turned off from the center to the outer periphery.

In one embodiment, any adjacent first lamp group sequences are spaced apart by the same distance.

In one embodiment, the substrate is divided into a plurality of rectangular areas sequentially connected from a first side to a second side, the plurality of lamp sets are arranged in the plurality of rectangular areas, the lamp sets in each rectangular area form a second lamp set sequence, and each second lamp set sequence at least comprises one lamp set; the indicator lights are lit up in units of the second light group sequence.

In one embodiment, when the projector is in the reminding mode, the indicator light flickers; when the initial state of the indicator light is a non-lighting state, the indicator light sequentially lights a plurality of second light group sequences from the first side to the second side, and when one second light group sequence is lighted, the second light group sequence which is adjacent to the second light group sequence and is lighted last is extinguished; or, when the initial state of the indicator light is the lighting state, the indicator light sequentially turns off the plurality of second light group sequences from the first side to the second side, and when one second light group is turned off, the second light group sequence which is turned off immediately before the second light group sequence is turned on.

In one embodiment, when the initial state of the indicator light is the off state and the plurality of second light group sequences are sequentially turned on from the first side to the second side, the second light group sequences are turned back to the first side to be turned on again for circulation, or the second light group sequences are sequentially turned on from the second side to the first side for circulation; or, when the initial state of the indicator light is the lighting state and the plurality of second light group sequences are sequentially turned off from the first side to the second side, returning to the first side to turn off the second light group sequences again for circulation, or turning off the second light group sequences from the second side to the first side for circulation.

In a third aspect, an embodiment of the present invention further provides a projector, including the indicator light described in the various embodiments of the first aspect, where the indicator light is driven by using the driving method described in any one of the various embodiments of the second aspect.

In one embodiment, the projector comprises a central processing unit, a micro control unit and a light source driver which are electrically connected in sequence, wherein the central processing unit sends a first instruction of a working mode of the projector to the micro control unit, the micro control unit receives the first instruction and converts the first instruction into a second instruction, and the light source driver receives the second instruction and sends a control signal to the indicator lamp to drive the indicator lamp to be lightened.

The indicator lamp comprises a plurality of lamp groups, each lamp group in the plurality of lamp groups can emit light with 7 colors, and the indicator lamp can emit light with various colors by controlling each lamp group to emit different light. Meanwhile, part of the lamp groups are controlled to emit light, and part of the lamp groups do not emit light, so that various display effects of the indicator lamp can be realized, and the indicator lamp can be used for indicating different working modes of the projector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic configuration diagram of a projector of an embodiment;

FIG. 2 is a schematic structural diagram of an indicator light of a projector according to an embodiment;

FIG. 3 is a schematic structural diagram of a lamp group of an indicator lamp of a projector according to an embodiment;

FIGS. 4 a-4 f are schematic diagrams illustrating a usage process of an indicator light of a projector according to an embodiment;

FIGS. 5 a-5 f are schematic views illustrating a usage process of an indicator light of a projector according to another embodiment;

fig. 6 is a schematic circuit configuration diagram of a projector according to an embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, an embodiment of the invention provides a projector 1000, which includes a casing 1100 and a projection lamp 1200, where the casing 1100 is approximately a rectangular parallelepiped, and the projection lamp 1200 is disposed at a side of the casing 1100. The projector 1000 further includes the indicator light 100 provided in the embodiment of the present invention, and the indicator light 100 is disposed on the top shell 1110 of the casing 1100, for example, but the indicator light 100 may also be disposed at other positions, such as a side of the casing 1100. The indicator light 100 according to the embodiment of the present invention is driven by using the driving method according to the embodiment of the present invention, and the specific driving method is described later. The projector 1000 of the embodiment of the invention can realize colorful display effect by arranging the indicator lamp 100, can indicate different functions of the projector 1000, has various indication functions and has rich visual effect.

Referring to fig. 1 and fig. 2, an indicator lamp 100 of a projector is provided, the indicator lamp 100 is disposed on the projector 1000, and the indicator lamp 100 includes a substrate 10 and a plurality of lamp sets 20 disposed on the substrate 10. The substrate 10 is a Printed Circuit Board (PCB).

Referring to fig. 3, each of the lamp sets 20 includes a red lamp bead 21(R), a green lamp bead 22(G), and a blue lamp bead 23 (B). Red lamp pearl 21(R), green lamp pearl 22(G) and blue lamp pearl 23(B) are the LED lamp pearl, and the accessible is pegged graft or the paster setting is on base plate 10.

Referring to fig. 1, 2 and 6, the substrate 10 is configured to be electrically connected to a driving circuit 400 of the projector 1000, and to transmit an electrical signal of the driving circuit 400 to the plurality of lamp groups 20, and the plurality of lamp groups 20 emit light according to the electrical signal. Wherein, a plurality of banks 20 are according to the different mode of projecting apparatus 1000, and red lamp pearl 21, green lamp pearl 22 and blue lamp pearl 23 of every bank 20 are all not luminous, perhaps, at least one of red lamp pearl 21, green lamp pearl 22 and blue lamp pearl 23 is luminous.

For one lamp set 20, when one of the red lamp beads 21, the green lamp beads 22 and the blue lamp beads 23 emits light, the whole lamp set 20 emits one of red, green or blue light. When two of the red, green and blue beads 21, 22 and 23 emit light, the lamp set 20 integrally emits mixed light of the two beads, for example, yellow light formed by mixing the red bead 21 and the green bead 22; red light beads 21 and blue light beads 23 are mixed to form pinkish light; green light formed by mixing the green light beads 22 and the blue light beads 23. When the red lamp beads 21, the green lamp beads 22 and the blue lamp beads 23 are all luminous, the lamp group 20 integrally emits mixed light of the three lamp beads, namely white light. That is, one lamp set 20 may emit light of 7 colors of red, green, blue, yellow, magenta, cyan, and white.

The indicator lamp 100 includes a plurality of lamp sets 20, each of the lamp sets 20 in the plurality of lamp sets 20 can emit light of 7 colors, and the indicator lamp 100 can emit light of various colors by controlling the lamp sets 20 to emit different light. Meanwhile, by controlling part of the lamp sets 20 to emit light and part of the lamp sets 20 not to emit light, various display effects of the indicator lamps 100 can be realized, and the indicator lamps can be used for indicating different working modes of the projector 1000.

In one embodiment, referring to fig. 2, a plurality of lamp sets 20 are arranged on the substrate 10 in a sequentially nested annular array, and one lamp set 20 is disposed at the center. The overall formation of the plurality of lamp sets 20 is a circular structure and has a plurality of annular lamp sets from inside to outside, 3 layers being shown in fig. 2, it being understood that the number of layers may also be 2, 3, 4, 5 … …. The greater the number of layers, the greater the number of lamp groups 20, and the greater the color that can be displayed by the entirety of the indicator lamp 100. The annular array of the indicator lights 100 is arranged, so that the overall structure of the indicator lights 100 is regular, and the distance between each two adjacent light groups 20 on each layer is the same, so that the overall light emission of the indicator lights 100 is uniform, and the display effect is good. The shape that can set up base plate 10 also is circular, corresponds with the overall structure of a plurality of banks 20 for pilot lamp 100 is whole to be circular structure, also is convenient for install on projecting apparatus 1000, and the luminous region of pilot lamp 100 is circular on projecting apparatus 1000, and is effectual.

The following describes a driving method of the indicator lamp.

Referring to fig. 4a to 4f, in each of the above-mentioned figures, the light group 20 is filled with a shaded area indicating that the light group 20 is lit, and the light group 20 is not filled with a shaded area indicating that the light group 20 is not lit.

In one embodiment, referring to fig. 4a to 4f, a method for driving an indicator light of a projector includes: dividing the substrate 10 into a plurality of circular regions A, B, C nested in sequence from the center to the outer periphery, wherein a plurality of lamp groups 20 are arranged in the gaps between the circular regions and the adjacent circular regions, and the lamp groups 20 between each circular region and the adjacent circular regions form a first lamp group sequence, and each first lamp group sequence at least comprises one lamp group 20; the indicator lamps 100 are lit in units of the first lamp group sequence.

As shown in fig. 4a, 1 lamp group 20 is disposed in the circular area a, 8 lamp groups 20 are disposed between the circular area a and the circular area B, and 9 lamp groups 20 are disposed between the circular area B and the circular area C. In other words, the first sequence of lamp groups within circular area a comprises 1 lamp group 20, the first sequence of lamp groups between circular area a and circular area B comprises 8 lamp groups 20, and the first sequence of lamp groups between circular area B and circular area C comprises 9 lamp groups 20. All the lamp groups 20 of fig. 4a are lit, i.e. the three first lamp group sequences between circular area a, circular area a and circular area B, circular area B and circular area C are lit.

As shown in fig. 4b, 1 lamp group 20 in the circular area a is lit, and the other lamp groups are not lit, i.e., the first lamp group sequence in the circular area a is lit, and the other two first lamp group sequences are not lit. As further shown in fig. 4C, 9 lamp groups 20 between circular area B and circular area C are lit, and the other lamp groups are unlit, i.e. the first lamp group sequence between circular area B and circular area C is lit, and the other two first lamp group sequences are unlit. In other embodiments, reference may be made and details are not repeated.

By setting a plurality of first lamp group sequences and lighting the lamps according to the first lamp group sequences as a unit, batch lighting of the plurality of lamp groups 20 can be realized, and various display effects can be realized.

In one embodiment, referring to fig. 1, fig. 2 and fig. 4a to fig. 4f, when projector 1000 is in the breathing light mode, the breathing light mode may indicate that projector 1000 is in a standby state, receiving data, and the like. The indicator lamp 100 sequentially lights a plurality of first lamp group sequences from the center to the periphery, and sequentially lights out the plurality of first lamp group sequences from the periphery to the center after all the first lamp group sequences are lighted; alternatively, the first and second electrodes may be,

the indicator light 100 sequentially lights the plurality of first light group sequences from the outer periphery to the center, and sequentially lights out the plurality of first light group sequences from the center to the outer periphery after all the first light group sequences are lighted.

Fig. 4 a-4 f show a one-cycle driving process of the indicator lamp 100 of one embodiment, wherein, at an initial time, all three first lamp group sequences of fig. 4a are lit; after a preset time (e.g., 0.2 second), the first lamp group sequence in the circular area a of fig. 4b is turned off, and the other two first lamp group sequences are kept on; after a preset time, the first lamp group sequence between the circular area a and the circular area B of fig. 4C is turned off, and the first lamp group sequence between the circular area B and the circular area C is kept on; after a preset time, the three first lamp group sequences of fig. 4d are all turned off; after a preset time, the first lamp group sequence in the circular area a of fig. 4e is turned on, and the other two first lamp group sequences keep off; after a preset time, the first lamp group sequence between the circular area A and the circular area B in the graph of fig. 4f is turned on, and the first lamp group sequence between the circular area B and the circular area C keeps an off state; the time for one complete driving process is 1 second. It should be understood that the extinguishing is relative to the lighting, that is, the extinguishing may be complete extinguishing, or may be a state in which the brightness is greatly reduced compared to the lighting but is not completely extinguished, for example, the brightness at the lighting is 50, and the brightness at the extinguishing is 10 instead of 0, and may also be referred to as extinguishing. When each first lamp group sequence is lighted, at least one of the red lamp bead 21, the green lamp bead 22 and the blue lamp bead 23 of the lamp group 20 is lighted.

The sequence of fig. 4 a-4 f is from full illumination to a gradual extinction and then illumination. If the sequence is shown in fig. 4 d-fig. 4 e-fig. 4 f-fig. 4 a-fig. 4 b-fig. 4c, the process is from complete extinguishing to gradual lighting and then extinguishing.

Therefore, the driving method of the present embodiment can realize the on-off-on (or off-on-off) effect of the indicator lamp 100, realizing the breathing lamp mode of the projector 1000.

In an embodiment, the distance between any adjacent first lamp group sequences is equal, so that the indicator lamps 100 have a relatively uniform distribution of the lamp groups from the center to the periphery, and the display effect is uniform. The radius of the edge of the circular area a, the distance from the edge of the circular area a to the edge of the circular area B, and the distance from the edge of the circular area B to the edge of the circular area C may be equal.

In one embodiment, referring to fig. 5 a-5 f, the substrate 10 is divided into a plurality of rectangular areas D, E, F, G, H sequentially connected from a first side (e.g., the left side in fig. 5 a) to an opposite second side (e.g., the right side in fig. 5 a), the plurality of lamp sets 20 are disposed in the plurality of rectangular areas, the lamp sets in each rectangular area form a second lamp set sequence, and each second lamp set sequence at least includes one lamp set 20; the indicator lights are lit in units of the second light group sequence.

As shown in fig. 5a, the second lamp group sequence in the rectangular region D is turned off, and the second lamp group sequences in other rectangular regions are all turned on; as shown in fig. 5b, the second lamp group sequence in the rectangular area E is turned off, and the second lamp group sequences in other rectangular areas are all turned on. Other embodiments may be referred to and will not be described in detail.

By setting the plurality of second lamp group sequences and lighting the lamps according to the second lamp group sequences as units, the plurality of lamp groups 20 can be lighted in batches, and various display effects can be realized.

In one embodiment, referring to fig. 1, fig. 2 and fig. 5a to fig. 5f, when the projector 1000 is in the alert mode, the indicator light 100 flashes, and the alert mode may indicate that the projector 1000 is in a fault state, has a working time exceeding a normal working time, and has no video signal.

When the initial state of the indicator light 100 is the unlighted state, the indicator light 100 lights a plurality of second light group sequences from the first side to the second side in sequence, and when one second light group sequence is lighted, the next lighted second light group sequence adjacent to the second light group sequence is extinguished; alternatively, the first and second electrodes may be,

when the initial state of the indicator light is the lighting state, the indicator light sequentially extinguishes the plurality of second light group sequences from the first side to the second side, and when one second light group is extinguished, the second light group sequence which is adjacent to the second light group and is extinguished is lit.

Fig. 5 a-5 f illustrate a complete cycle driving process of the indicator lamp 100 according to one embodiment, and referring to fig. 5f, the initial state of the indicator lamp 100 is the fully-on state; after a preset time (e.g. 0.01 second), referring to fig. 5a, the second lamp group sequence in the rectangular area D is turned off, and the other second lamp group sequences are kept on; after the preset time, please refer to fig. 5b, the second lamp group sequence in the rectangular area E is turned off, the second lamp group sequence in the rectangular area D is turned on, and the other second lamp group sequences are kept on; after the preset time, please refer to fig. 5c, the second lamp group sequence in the rectangular area F is turned off, the second lamp group in the rectangular area E is turned on, and the other second lamp group sequences are kept on; after the preset time, please refer to fig. 5d, the second lamp group sequence in the rectangular area G is turned off, the second lamp group in the rectangular area F is turned on, and the other second lamp group sequences are kept on; after the preset time, please refer to fig. 5e, the second lamp group sequence in the rectangular region H is turned off, the second lamp group in the rectangular region G is turned on, and the other second lamp group sequences are kept on; after a preset time, please refer to fig. 5f, return to the initial state, and all the second lamp set sequences are turned on to complete the driving process of the indicator lamp for one cycle. The time for one complete driving process is 0.05 seconds. It should be understood that the extinguishing is relative to the lighting, that is, the extinguishing may be complete extinguishing, or may be a state in which the brightness is greatly reduced compared to the lighting but is not completely extinguished, for example, the brightness at the lighting is 100, and the brightness at the extinguishing is 10 instead of 0, and may also be referred to as extinguishing. When each second lamp group sequence is lighted, at least one of the red lamp bead 21, the green lamp bead 22 and the blue lamp bead 23 of the lamp group 20 is lighted.

In one embodiment, referring to fig. 5a to 5f, when the initial state of the indicator lamp 100 is the off state, and the plurality of second lamp group sequences are sequentially turned on from the first side to the second side, the second lamp group sequences are turned back to the first side to be turned on again for circulation, or the second lamp group sequences are sequentially turned on from the second side to the first side for circulation; alternatively, the first and second electrodes may be,

when the initial state of the indicator light 100 is the lighting state and the plurality of second light group sequences are sequentially extinguished from the first side to the second side, the indicator light returns to the first side to extinguish the second light group sequences again for circulation, or the indicator light returns to the second side to extinguish the second light group sequences sequentially for circulation.

No matter whether pilot lamp 100 initial condition is for lighting or going out, pilot lamp 100's holistic scintillation can be from first side to the second side, also can follow the second side to first side to can realize different light effects, can instruct the different mode of projecting apparatus, visual effect is good.

Referring to fig. 1 to fig. 5f, in other embodiments, the indicator light 100 may have other visual effects according to different operation modes of the projector 1000. For example, when projector 1000 is in the normally on mode, all of lamp groups 20 of indicator lamps 100 are normally on. When projector 1000 is in viewing mode, all banks 20 are off. When the projector 1000 is in the bluetooth mode, the blue lamp beads 23 of all the lamp groups 20 of the indicator lamp 100 are all normally on, the red lamp beads 21 and the green lamp beads 22 are both turned off, and the indicator lamp 100 is integrally blue in light effect. When the projector 1000 is in the AI multicolor mode, the red beads 21 of some of the lamp groups 20 in the plurality of lamp groups 20 of the indicator lamp 100 are always on, the green beads 22 of some of the lamp groups 20 are always on, and the blue beads 23 of some of the lamp groups are always on, so that the whole indicator lamp 100 has a colorful light effect with multiple colors.

In an embodiment, referring to fig. 1, fig. 2 and fig. 6, the projector 1000 further includes a central processing unit 200(CPU), a micro control unit 300(MCU) and a light source driver 400 electrically connected in sequence. The central processing unit 200 issues a first instruction of the projector operation mode to the micro control unit 300, the micro control unit 300 receives the first instruction and converts the first instruction into a second instruction, and the light source driver 400 receives the second instruction and sends a control signal to the indicator light 100 to drive the indicator light 100 to light.

The central processor 200 and the micro control unit 300 are connected by a first bus 201, and the first bus 201 may be an I2C (Inter-Integrated Circuit, two-wire serial) bus. The micro control unit 300 is connected to the light source driver 400 via a second Bus 301, wherein the second Bus 301 may be an I2C Bus or an SDB (Secondary Data Bus). The light source driver 400 is also connected to a power input line 401, and the power input line 401 supplies a predetermined direct current (e.g., 5V) to the light source driver 400. The central processor 200, the micro control unit 300, the light source driver 400 and the connecting lines can be integrated into a single chip microcomputer, and the structure is simple.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.