A canopy lamp and a control circuit thereof

Abstract

The application discloses a ceiling lamp and a control circuit thereof. The ceiling lamp comprises a shell, a first power supply, a second power supply, a lighting mechanism, a power switch, a first color temperature switch and a second color temperature switch are arranged in the shell. The lighting mechanism comprises a first lighting part and a second lighting part. The power switch is electrically connected with the first power supply and the second power supply respectively. The first power supply is electrically connected with the first lighting part through the first color temperature switch. The second power supply is electrically connected with the second lighting part through the second color temperature switch. First and second through grooves are arranged on the shell for switch adjustment. The ceiling lamp disclosed by the application can adjust the color temperature of the corresponding lighting part through the corresponding color temperature switch, that is, the output of the power supply is controlled individually, so that the interference influence caused by the parallel output of the double power supplies is eliminated, and the two power supplies are independently operated, so that the overload safety risk caused by the poor contact of any power supply is eliminated.

Description

Technical Field

[0001] This invention relates to the field of lighting device technology, and in particular to a ceiling light and its control circuit. Background Technology

[0002] Ceiling lights occupy a large market share in commercial and industrial lighting. Currently available ceiling lights generally only have one color temperature and one power. In order to meet the needs of different applications, multiple ceiling lights with different power and color temperatures need to be combined for use. This results in a large number of product models, meaning that customers need to purchase and keep a large variety of products in stock, which increases product transportation and inventory costs.

[0003] Linear ceiling lights are mainly used in indoor warehouses, stadiums and other applications where high luminous flux is required. They belong to the category of high-power LED lighting fixtures. However, there are few options for LED power supplies suitable for high-power lighting fixtures on the market, especially for those with a power of 300W or more. This results in high manufacturing costs for high-power lighting fixtures and makes it difficult to meet the requirements of product structure, functionality and performance at the same time.

[0004] Currently, some linear ceiling lights use a dual-power supply scheme, which uses two relatively low-power LED power supplies to control the output of the light fixture to meet the usage requirements. However, the two power supplies of existing dual-power linear ceiling lights are connected in parallel. When adjusting the power and color temperature, the conducted radiation of the light fixture is prone to become uncontrolled, causing the conducted radiation to exceed the national standard range. In addition, when the dual power supply controls the light fixture through a color temperature switch, if either power supply has poor contact, it will cause part of the circuit of the other power supply to be overloaded. This overload phenomenon cannot be detected during production testing, meaning that dual-power linear ceiling lights pose a safety hazard during operation.

[0005] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a ceiling light that can eliminate the interference caused by the parallel output of dual power supplies and avoid the problem of circuit overload caused by poor contact of any power supply component.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A ceiling light includes a housing. Inside the housing are a first power supply component, a second power supply component, a lighting mechanism, a power switch, a first color temperature switch, and a second color temperature switch. The lighting mechanism includes a first lighting section and a second lighting section. The power switch is electrically connected to both the first and second power supply components. The first power supply component is electrically connected to the first lighting section via the first color temperature switch, and the second power supply component is electrically connected to the second lighting section via the second color temperature switch. The housing has a first through slot and a second through slot. The first through slot is used to adjust the power switch, and the second through slot is used to adjust the first and second color temperature switches.

[0009] In the aforementioned ceiling light, a switch box is provided inside the housing. The switch box contains a first switch switch, a second switch switch, a first color temperature switch, a second color temperature switch, and a power switch. The first switch switch is connected to the power switch. The second switch switch is connected to both the first and second color temperature switches. A third and a fourth through slot are respectively provided on the top of the switch box. The first switch switch is connected to both the first and third through slots, and the second switch switch is connected to both the second and fourth through slots.

[0010] In the aforementioned ceiling light, the switch box includes a cover and a body. The third and fourth through slots are respectively formed on the cover. The bottom of the cover is provided with one or more first limiting blocks and one or more second limiting blocks. The top of the first switch dial is provided with one or more first limiting slots, and the top of the second switch dial is provided with one or more second limiting slots. The first limiting blocks are connected to the first limiting slots, and the second limiting blocks are connected to the second limiting slots. The side wall of the cover is provided with one or more locking blocks, and the inner side wall of the body is provided with one or more locking slots. The locking blocks are connected to the locking slots.

[0011] In the aforementioned ceiling light, the housing includes a bottom shell and a power supply box. The power supply box is fixed to the top of the bottom shell. The first power supply component, the second power supply component, and the switch box are respectively disposed inside the power supply box. The first through slot and the second through slot are formed on the top of the power supply box. The lighting mechanism is disposed inside the bottom shell.

[0012] In the aforementioned ceiling light, the lighting mechanism further includes a first prism plate and a second prism plate. The first lighting part includes a first LED light board and a second LED light board, and the second lighting part includes a third LED light board and a fourth LED light board. The first LED light board and the second LED light board are disposed between the first prism plate and the bottom shell, and the third LED light board and the fourth LED light board are disposed between the second prism plate and the bottom shell.

[0013] In the aforementioned ceiling light, multiple heat dissipation holes are respectively opened on the two side walls of the power supply box, and multiple heat dissipation strips are provided on the top of the bottom shell.

[0014] In the aforementioned ceiling light, the first power supply component includes a first power source and a first connecting plate. The first power source is fixedly disposed within the first connecting plate, and a first positioning groove is provided on one side of the first connecting plate. A first positioning block is provided inside the power supply box, and the first positioning block is connected in cooperation with the first positioning groove. The second power supply component includes a second power source and a second connecting plate. The second power source is fixedly disposed within the second connecting plate, and a second positioning groove is provided on one side of the second connecting plate. A second positioning block is provided inside the power supply box, and the second positioning block is connected in cooperation with the second positioning groove.

[0015] In the aforementioned ceiling light, the bottom of the base shell is provided with a plurality of first connectors and a plurality of second connectors. The first connectors are connected to the first prism plate, and the second connectors are connected to the second prism plate.

[0016] In the aforementioned ceiling light, the bottom shell includes a first lamp body and a second lamp body fixedly connected, and the power supply box is fixedly disposed on the top of the first lamp body and the second lamp body; the first LED light board and the third LED light board are fixedly disposed in the first lamp body, and the second LED light board and the fourth LED light board are fixedly disposed in the second lamp body; the first prism plate is fixedly connected to the first lamp body and the second lamp body respectively, and the second prism plate is fixedly connected to the first lamp body and the second lamp body respectively.

[0017] The present invention also provides a control circuit for a ceiling light, the control circuit being used to control the operation of the ceiling light as described above. The control circuit includes a first power supply component, a second power supply component, a power switch, a first lighting unit, a second lighting unit, a first color temperature switch, and a second color temperature switch. The power switch is electrically connected to the first power supply component and the second power supply component respectively. The positive terminal of the first power supply component is connected to the positive terminal of the first lighting unit, and the negative terminal of the first power supply component is connected to the negative terminal of the first lighting unit through the first color temperature switch. The positive terminal of the second power supply component is connected to the positive terminal of the second lighting unit, and the negative terminal of the second power supply component is connected to the negative terminal of the second lighting unit through the second color temperature switch.

[0018] Beneficial effects:

[0019] This invention provides a ceiling light where a first power supply component adjusts the color temperature of a first lighting section via a first color temperature switch, and a second power supply component adjusts the color temperature of a second lighting section via a second color temperature switch. In other words, the two power supply components independently output signals to adjust the color temperature of their respective lighting sections, eliminating the interference caused by parallel output of dual power supplies. This meets lighting safety regulations and ensures that the light's conducted radiation range meets national standards. Furthermore, the independent operation of the two power supply components eliminates the overload safety risk that may arise from poor contact in either component, thus improving the safety of the ceiling light during operation. Attached Figure Description

[0020] Figure 1 Exploded view of the ceiling light provided by this invention;

[0021] Figure 2 A cross-sectional view of the ceiling light provided by the present invention;

[0022] Figure 3 An exploded view of the switch box provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the ceiling light provided by the present invention;

[0024] Figure 5 A schematic diagram of the structure of the first power supply component provided by the present invention;

[0025] Figure 6 for Figure 1 Enlarged view of part A;

[0026] Figure 7 The circuit structure diagram of the control circuit provided by the present invention.

[0027] Key component symbols: 1-House, 11-Power supply box, 111-First through slot, 112-Second through slot, 113-Heat dissipation hole, 12-First lamp body, 13-Second lamp body, 14-Heat dissipation strip, 15-First connector, 16-Second connector, 21-First power supply component, 211-First power supply, 212-First connecting plate, 213-First positioning slot, 22-Second power supply component, 31-First lighting section, 311-First LED light board, 312-Second LED light board, 313-First prism 32-Second lighting section, 321-Third LED light board, 322-Fourth LED light board, 323-Second prism plate, 4-Switch box, 41-Box cover, 411-Third through slot, 412-Fourth through slot, 413-First limit block, 414-Second limit block, 415-Card block, 42-Box body, 43-First switch DIP switch, 431-First limit slot, 44-Second switch DIP switch, 441-Second limit slot, 45-First color temperature switch, 46-Second color temperature switch, 47-Power switch. Detailed Implementation

[0028] This invention provides a ceiling light and its control circuit. To make the purpose, technical solution and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In the description of this invention, it should be understood that the terms "top," "bottom," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and should not be construed as limiting this invention; in addition, the terms "installation," "connection," etc. should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Please see Figures 1 to 6 This invention provides a ceiling light, including a housing 1. The housing 1 houses a first power supply component 21, a second power supply component 22, a lighting mechanism, a power switch 47, a first color temperature switch 45, and a second color temperature switch 46. The lighting mechanism includes a first lighting section 31 and a second lighting section 32. The power switch 47 is electrically connected to both the first power supply component 21 and the second power supply component 22. The first power supply component 21 is electrically connected to the first lighting section 31 via the first color temperature switch 45, and the second power supply component 22 is electrically connected to the second lighting section 32 via the second color temperature switch 46. The housing 1 has a first through slot 111 and a second through slot 112. The first through slot 111 is used to adjust the power switch 47, and the second through slot 112 is used to adjust the first color temperature switch 45 and the second color temperature switch 46.

[0031] The ceiling light disclosed in this application has a first power supply component 21 that adjusts the color temperature of the first lighting section 31 via a first color temperature switch 45, and a second power supply component 22 that adjusts the color temperature of the second lighting section 32 via a second color temperature switch 46. This means that the two power supply components independently output signals to adjust the color temperature of their respective lighting sections, eliminating the interference caused by parallel output of dual power supplies. This meets lighting safety regulations and ensures that the light's conducted radiation range meets national standards. Furthermore, the independent operation of the two power supply components eliminates the overload safety risk that may arise from poor contact in either component, improving the safety of the ceiling light during operation. By controlling a 0-10V dimming signal to adjust the power level, and with one power switch 47 corresponding to adjust the working power of both power supply components, the synchronous adjustment of the working power of the two lighting sections is ensured, improving the user experience.

[0032] Further, please refer to Figures 1 to 4 The housing 1 contains a switch box 4, which contains a first switch switch 43, a second switch switch 44, a first color temperature switch 45, a second color temperature switch 46, and a power switch 47. The first switch switch 43 is connected to the power switch 47. The second switch switch 44 is connected to both the first color temperature switch 45 and the second color temperature switch 46. The top of the switch box 4 has a third through slot 411 and a fourth through slot 412. The first switch switch 43 is connected to both the first through slot 411 and the third through slot 411, and the second switch switch 44 is connected to both the second through slot 412 and the fourth through slot 412.

[0033] In one embodiment, the switch box 4 is bolted to the housing 1. The switch box 4 is provided to limit the active positions of the first switch switch 43 and the second switch switch 44, thereby improving the stability of the ceiling light when adjusting the color temperature and power. The switch box 4 is also used to realize the electrical safety protection of the power switch 47, the first color temperature switch 45 and the second color temperature switch 46, thereby improving the safety of the ceiling light during operation.

[0034] In one embodiment, the power switch 47 is engaged with the first switch DIP switch 43, and the first color temperature switch 45 and the second color temperature switch 46 are engaged with the second switch DIP switch 44 respectively. The first color temperature switch 45 and the second color temperature switch 46 can be synchronously adjusted through the second switch DIP switch, that is, the output of the first power supply component 21 and the second power supply component 22 can be synchronously adjusted to achieve synchronous adjustment of the color temperature of the first lighting unit 31 and the second lighting unit 32, thereby achieving the purpose of control consistency and improving the user experience.

[0035] In one embodiment, see Figure 3The switch box 4 is equipped with a control circuit board. The power switch 47, the first color temperature switch 45, and the second color temperature switch 46 are respectively soldered onto the control circuit board. The control circuit board is an existing switch board. The control circuit board is bolted to the switch box 4.

[0036] Further, please refer to Figure 3 The switch box 4 includes a cover 41 and a body 42. The third through groove 411 and the fourth through groove 412 are respectively formed on the cover 41. The bottom of the cover 41 is provided with one or more first limiting blocks 413 and one or more second limiting blocks 414. The top of the first switch dial 43 is provided with one or more first limiting grooves 431, and the top of the second switch dial 44 is provided with one or more second limiting grooves 441. The first limiting block 413 is connected to the first limiting groove 431, and the second limiting block 414 is connected to the second limiting groove 441. The side wall of the cover 41 is provided with one or more locking blocks 415, and the inner side wall of the body 42 is provided with one or more locking slots. The locking blocks 415 are connected to the locking slots.

[0037] Further, please refer to Figure 1 , Figure 2 Hehe Figure 4 The housing 1 includes a bottom shell and a power supply box 11. The power supply box 11 is fixed to the top of the bottom shell. The first power supply component 21, the second power supply component 22, and the switch box 4 are respectively disposed in the power supply box 11. The first through groove 111 and the second through groove 112 are formed on the top of the power supply box 11. The lighting mechanism is disposed in the bottom shell. In one embodiment, the bottom shell and the power supply box 11 are bolted together. The power supply box 11 is provided to facilitate the maintenance and repair of the electrical components in the first power supply component 21, the second power supply component 22, and the switch box 4.

[0038] Further, please refer to Figure 1 The lighting mechanism further includes a first prism plate 313 and a second prism plate 323. The first lighting part 31 includes a first LED light board 311 and a second LED light board 312, and the second lighting part 32 includes a third LED light board 321 and a fourth LED light board 322. The first LED light board 311 and the second LED light board 312 are disposed between the first prism plate 313 and the bottom shell, and the third LED light board 321 and the fourth LED light board 322 are disposed between the second prism plate 323 and the bottom shell. In one embodiment, the first LED light board 311, the second LED light board 312, the third LED light board 321, and the fourth LED light board 322 are respectively bolted to the bottom shell.

[0039] The LED light panel includes four pieces, which can improve the light emission uniformity of the ceiling light. Together with the first prism plate 313 and the second prism plate 323 used to disperse the light beam, it can increase the lighting range of the ceiling light and ensure uniform illumination at all positions within the lighting range, thereby improving the user experience.

[0040] Further, please refer to Figure 1 , Figure 4 and Figure 6 Multiple heat dissipation holes 113 are respectively provided on the two side walls of the power supply box 11. The heat dissipation holes 113 are used to dissipate heat when the first power supply component 21, the second power supply component 22 and the switch box 4 are working. Multiple heat dissipation strips 14 are provided on the top of the bottom shell. The heat dissipation strips 14 are used to dissipate heat when the lighting mechanism is working. The heat dissipation holes 113 and the heat dissipation strips 14 can achieve rapid heat dissipation when the ceiling light is working, and improve the safety of the ceiling light when it is working. In one embodiment, the heat dissipation strips 14 are integrally formed with the bottom shell.

[0041] Further, please refer to Figure 1 and Figure 5 The first power supply component 21 includes a first power source 211 and a first connecting plate 212. The first power source 211 is fixedly disposed within the first connecting plate 212. A first positioning groove 213 is provided on one side of the first connecting plate 212. A first positioning block is provided inside the power supply box 11, and the first positioning block is connected to the first positioning groove 213. The second power supply component 22 includes a second power source and a second connecting plate. The second power source is fixedly disposed within the second connecting plate. A second positioning groove is provided on one side of the second connecting plate. A second positioning block is provided inside the power supply box 11, and the second positioning block is connected to the second positioning groove. The positioning block and positioning groove enable rapid positioning and installation of the first power supply component 21 and the second power supply component 22, and prevent displacement of the first power supply component 21 and the second power supply component 22 during operation, thus avoiding poor contact and improving the stability of the ceiling light during operation. In one embodiment, the first power source 211 is glued to the first connecting plate 212, and the second power source is glued to the second connecting plate. The first positioning block and the second positioning block are integrally formed with the power supply box 11.

[0042] Further, please refer to Figure 6The bottom of the base shell is provided with a plurality of first connectors 15 and a plurality of second connectors 16. The first connectors 15 are connected to the first prism plate 313, and the second connectors 16 are connected to the second prism plate 323. The first connectors 15 and the second connectors 16 enable the quick positioning and installation of the first prism plate 313 and the second prism plate 323, and prevent the first prism plate 313 and the second prism plate 323 from falling off the base shell during the operation of the ceiling light, thereby improving the stability and safety of the ceiling light during operation.

[0043] In one embodiment, see Figure 6 The first connector 15 includes a first connecting groove and a first connecting block arranged vertically, a first connecting gap is formed between the first connecting groove and the first connecting block, and the first prism plate 313 is connected to the first connecting gap; the second connector 16 includes a second connecting groove and a second connecting block arranged vertically, a second connecting gap is formed between the second connecting groove and the second connecting block, and the second prism plate 323 is connected to the second connecting gap.

[0044] Further, please refer to Figure 1 and Figure 4 The bottom shell includes a first lamp body 12 and a second lamp body 13 fixedly connected. The power supply box 11 is fixedly disposed on the top of the first lamp body 12 and the second lamp body 13. The first LED light panel 311 and the third LED light panel 321 are fixedly disposed inside the first lamp body 12, and the second LED light panel 312 and the fourth LED light panel 322 are fixedly disposed inside the second lamp body 13. The first prism plate 313 is fixedly connected to the first lamp body 12 and the second lamp body 13 respectively, and the second prism plate 323 is fixedly connected to the first lamp body 12 and the second lamp body 13 respectively. The first lamp body 12 and the second lamp body 13 can improve the overall strength of the ceiling light and extend its service life. In one embodiment, the first lamp body 12 and the second lamp body 13 are bolted together.

[0045] Please see Figure 7The present invention also discloses a control circuit for a ceiling light, the control circuit including a first power supply component 21, a second power supply component 22, a power switch 47, a first lighting unit 31, a second lighting unit 32, a first color temperature switch 45, and a second color temperature switch 46. The power switch 47 is electrically connected to the first power supply component 21 and the second power supply component 22 respectively. The positive terminal of the first power supply component 21 is connected to the positive terminal of the first lighting unit 31, and the negative terminal of the first power supply component 21 is connected to the negative terminal of the first lighting unit 31 through the first color temperature switch 45. The positive terminal of the second power supply component 22 is connected to the positive terminal of the second lighting unit 32, and the negative terminal of the second power supply component 22 is connected to the negative terminal of the second lighting unit 32 through the second color temperature switch 46. In one embodiment, the power switch 47 is electrically connected to the first power supply component 21 and the second power supply component 22 respectively through a power adjustment line.

[0046] The control circuit for the ceiling light disclosed in this application has the output of the first power supply component 21 forming a circuit with the first lighting unit 31 through the first color temperature switch 45, and the output of the second power supply component 22 forming a circuit with the second lighting unit 32 through the second color temperature switch 46. There is no connection between the output of the first power supply component 21 and the output of the second power supply component 22, that is, the two power supply components independently output signals to adjust the color temperature of the corresponding lighting unit, eliminating the interference caused by the parallel output of the dual power supplies, meeting the safety regulations for lighting fixtures, and ensuring that the conducted radiation range of the lighting fixture meets the national standard requirements. In addition, the independent operation of the two power supply components solves the overload safety risk that may be caused by poor contact of either power supply component, and improves the safety of the ceiling light during operation.

[0047] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A ceiling light, comprising a housing, characterized in that, The housing contains a first power supply component, a second power supply component, a lighting mechanism, a power switch, a first color temperature switch, and a second color temperature switch. The lighting mechanism includes a first lighting section and a second lighting section. The power switch is electrically connected to both the first and second power supply components. The first power supply component is electrically connected to the first lighting section via the first color temperature switch, and the second power supply component is electrically connected to the second lighting section via the second color temperature switch. The housing has a first through slot and a second through slot. The first through slot is used to adjust the power switch, and the second through slot is used to adjust the first and second color temperature switches. The two power supply components independently output signals to adjust the color temperature of the corresponding lighting sections, eliminating the interference caused by parallel output of dual power supplies. The housing contains a switch box, which includes a first switch DIP switch, a second switch DIP switch, a first color temperature switch, a second color temperature switch, and a power switch. The first switch DIP switch is connected to the power switch. The second switch DIP switch is connected to both the first and second color temperature switches. The top of the switch box has a third and a fourth through slot. The first switch DIP switch is connected to both the first and third through slots, and the second switch DIP switch is connected to both the second and fourth through slots.

2. A ceiling light according to claim 1, characterized in that, The switch box includes a cover and a body. The third and fourth through slots are respectively formed on the cover. The bottom of the cover is provided with one or more first limiting blocks and one or more second limiting blocks. The top of the first switch switch is provided with one or more first limiting slots, and the top of the second switch switch is provided with one or more second limiting slots. The first limiting blocks are connected to the first limiting slots, and the second limiting blocks are connected to the second limiting slots. The side wall of the cover is provided with one or more locking blocks, and the inner side wall of the body is provided with one or more locking slots. The locking blocks are connected to the locking slots.

3. A ceiling light according to claim 1, characterized in that, The housing includes a bottom shell and a power supply box. The power supply box is fixed to the top of the bottom shell. The first power supply component, the second power supply component, and the switch box are respectively disposed inside the power supply box. The first through slot and the second through slot are formed on the top of the power supply box. The lighting mechanism is disposed inside the bottom shell.

4. A ceiling light according to claim 3, characterized in that, The lighting mechanism further includes a first prism plate and a second prism plate. The first lighting part includes a first LED light board and a second LED light board, and the second lighting part includes a third LED light board and a fourth LED light board. The first LED light board and the second LED light board are disposed between the first prism plate and the bottom shell, and the third LED light board and the fourth LED light board are disposed between the second prism plate and the bottom shell.

5. A ceiling light according to claim 3, characterized in that, Multiple heat dissipation holes are provided on both sides of the power supply box, and multiple heat dissipation strips are provided on the top of the bottom shell.

6. A ceiling light according to claim 3, characterized in that, The first power supply component includes a first power source and a first connecting plate. The first power source is fixed inside the first connecting plate. A first positioning groove is formed on one side of the first connecting plate. A first positioning block is provided inside the power supply box. The first positioning block is connected to the first positioning groove. The second power supply component includes a second power source and a second connecting plate. The second power source is fixed inside the second connecting plate. A second positioning groove is formed on one side of the second connecting plate. A second positioning block is provided inside the power supply box. The second positioning block is connected to the second positioning groove.

7. A ceiling light according to claim 4, characterized in that, The bottom of the base shell is provided with a plurality of first connectors and a plurality of second connectors. The first connectors are connected to the first prism plate, and the second connectors are connected to the second prism plate.

8. A ceiling light according to claim 4, characterized in that, The bottom shell includes a first lamp body and a second lamp body that are fixedly connected. The power supply box is fixedly disposed on the top of the first lamp body and the second lamp body. The first LED light board and the third LED light board are fixedly disposed in the first lamp body, and the second LED light board and the fourth LED light board are fixedly disposed in the second lamp body. The first prism plate is fixedly connected to the first lamp body and the second lamp body respectively, and the second prism plate is fixedly connected to the first lamp body and the second lamp body respectively.

9. A control circuit for a ceiling light, characterized in that, The control circuit is used to implement the working control of the ceiling light as described in any one of claims 1-8. The control circuit includes a first power supply component, a second power supply component, a power switch, a first lighting unit, a second lighting unit, a first color temperature switch, and a second color temperature switch. The power switch is electrically connected to the first power supply component and the second power supply component respectively. The positive terminal of the first power supply component is connected to the positive terminal of the first lighting unit, and the negative terminal of the first power supply component is connected to the negative terminal of the first lighting unit through the first color temperature switch. The positive terminal of the second power supply component is connected to the positive terminal of the second lighting unit, and the negative terminal of the second power supply component is connected to the negative terminal of the second lighting unit through the second color temperature switch.

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