Light source module and lighting device

Abstract

The utility model relates to the technical field of lighting devices, in particular to a light source module and a lighting device. The lighting device comprises a radiator and a light source module. The light source module comprises a light source assembly and a control assembly, the control assembly comprises a first substrate and a switching power supply arranged on the first substrate, the first substrate is stacked on the light source assembly, and the switching power supply is located on the side, away from the light source assembly, of the first substrate; the light source assembly is arranged on a radiator of the lighting device, and the switching power supply is located on the side, away from the radiator, of the light source assembly. The light source module can be used for the lighting device, and the light source module can reduce common-mode interference on a switching power supply of a control assembly; moreover, parts such as a capacitor and a common mode inductor do not need to be additionally arranged, so that the lighting device does not need to provide a larger installation space, the compact structural design of the lighting device is facilitated, and the problem that the overall size of the lighting device is increased is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting devices, and more particularly, to a light source module and a lighting device. Background Art

[0002] Downlights, spotlights, etc. are all common lighting devices. The lighting devices provided by the related art usually include input wires, a radiator, a lamp cup, and a DOB component (i.e., a planar light source component); among them, both the DOB component and the lamp cup are connected to the radiator, and the lamp cup covers the outside of the DOB component. The input wires include a neutral wire, a live wire, and a ground wire. The ground wire is connected to the radiator, and the neutral wire and the live wire are connected to the DOB component; the DOB component includes an aluminum substrate and LEDs, a wireless module, and a power supply device arranged on the aluminum substrate. The power supply device includes a constant current controller and a switching power supply. Since the aluminum substrate of the DOB component is connected to the radiator, it has a good heat dissipation effect; however, the radiator is grounded through the ground wire, which is likely to cause relatively serious common mode interference to the switching power supply.

[0003] Common mode interference means that the interference voltage has the same amplitude on the signal wire and its return wire (generally called the signal ground wire). Here, the voltage is referenced to any nearby object (such as the earth, a metal chassis, a reference ground board, etc.), and the interference current loop flows in the loop formed by the wire and the reference object. In the related art, the live wire and the neutral wire are connected to the aluminum substrate to supply power to the switching power supply, and the ground wire is connected to the metal radiator. The entire lighting device forms a capacitor, called distributed capacitance; according to the principle of common mode interference generation, the live and neutral wires will flow back to the ground wire through the distributed capacitance, thereby generating strong conducted interference to the switching power supply.

[0004] Moreover, in the related art, in order to improve the common mode interference problem of the switching power supply in the lighting device, a Y capacitor is connected in parallel between the neutral wire and the ground and between the live wire and the ground of the input wire, so that the current preferentially flows through the Y capacitor without interfering with the switching power supply, or a large common mode inductor is used for suppression between the neutral wire and the live wire at the input end.

[0005] However, the above methods for suppressing the common mode interference of the switching power supply will occupy more installation space, easily cause an increase in the overall volume of the lighting device, and it is difficult to achieve a compact structural design of the lighting device. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a light source module and a lighting device. The light source module can be used in the lighting device, and the light source module can reduce the common mode interference to the switching power supply of the control component; moreover, since there is no need to additionally install components such as capacitors and common mode inductors, there is no need for the lighting device to provide a larger installation space, which is beneficial to realizing a compact structural design of the lighting device and improving the problem of the increase in the overall volume of the lighting device.

[0007] The embodiment of the utility model is achieved as follows:

[0008] In a first aspect, the utility model provides a light source module, comprising:

[0009] a light source assembly; and,

[0010] The control component includes a first substrate and a switch power supply arranged on the first substrate. The first substrate is stacked on the light source component, and the switch power supply is located on a side of the first substrate away from the light source component; wherein,

[0011] The light source assembly is used to be arranged on the heat sink of the lighting device, and the switch power supply can be located on the side of the light source assembly away from the heat sink.

[0012] In an optional embodiment, the light source module further includes a connector, and the connector is connected between the first substrate and the light source assembly so that the first substrate and the light source assembly are spaced apart from each other.

[0013] In an optional embodiment, the light source assembly includes a second substrate and a light source module disposed on the second substrate, the first substrate and the second substrate are spaced apart on one side where the light source module is disposed, and a distance between the first substrate and the second substrate is greater than or equal to 4 mm.

[0014] In an optional embodiment, the control component further includes a wireless module disposed on the first substrate, and the wireless module and the switching power supply are distributed on the same side of the first substrate.

[0015] In an optional embodiment, the wireless module includes a wireless chip and an antenna disposed on the first substrate.

[0016] In an optional embodiment, the wireless chip is distributed between the switching power supply and the antenna.

[0017] In an optional embodiment, the light source assembly includes a second substrate, and a light source module and a constant current controller disposed on the second substrate, and the first substrate is provided with an avoidance opening, which is distributed opposite to the light source module.

[0018] In a second aspect, the utility model provides a lighting device, comprising a heat sink and a light source module according to any one of the aforementioned embodiments, wherein the light source assembly is disposed on the heat sink.

[0019] In an optional embodiment, the heat sink has a mounting cavity and an opening communicating with the mounting cavity, the light source assembly is disposed at the bottom of the mounting cavity, and the wireless module disposed on the first substrate of the control assembly is distributed adjacent to the opening.

[0020] In an optional embodiment, the lighting device further includes a lamp cup having a light inlet and a light outlet, the light source assembly is arranged opposite to the light inlet, and the wireless module provided on the first substrate of the control assembly is arranged adjacent to the light inlet.

[0021] The beneficial effects of the light source module of the present utility model embodiment include: the capacitance formula of the parallel plate capacitor is: Among them, C is capacitance, εr is relative dielectric constant, k is electrostatic force constant, S is the area of ​​the two plates facing each other, d is the distance between the two plates, εr, k, S are all fixed constants, capacitance C is affected by the distance d between the two plates, and capacitance C will decrease when the distance d increases. The light source module provided by the embodiment of the utility model stacks the first substrate of the light source assembly and the control assembly, and enables the switching power supply arranged on the first substrate to be distributed on the side of the light source assembly away from the heat sink of the lighting device; in this way, compared with the implementation method of directly setting the switching power supply on the light source module, the control assembly including the switching power supply is separated, the value of parameter d in the formula for calculating capacitance is the distance between the control assembly and the light source assembly, and the stacked first substrate and light source assembly increase the value of parameter d, thereby reducing capacitance C, the smaller the capacitance, the greater the capacitive reactance, and the current flowing back through the ground wire is reduced, which can effectively reduce common mode interference.

[0022] Furthermore, since there is no need to add additional components such as capacitors and common-mode inductors, the lighting device does not need to provide a larger installation space, which is conducive to achieving a compact structural design of the lighting device and improving the problem of increased overall volume of the lighting device.

[0023] The lighting device of the embodiment of the utility model includes all the beneficial effects of the aforementioned light source module, such as reducing common-mode interference, ensuring a compact structural design of the lighting device, and improving the problem of increased overall volume of the lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A cross-sectional view of a lighting device in an embodiment of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the light source module in the embodiment of the utility model at a first viewing angle;

[0027] Figure 3 This is a structural block diagram of a light source module in an embodiment of the utility model;

[0028] Figure 4 This is a schematic structural diagram of the light source module in the embodiment of the utility model at a second viewing angle;

[0029] Figure 5 Structural schematic diagram of a wireless module disposed on a radiator in the related art;

[0030] Figure 6 Structural schematic diagram of a wireless module disposed on a radiator in an embodiment of the present invention;

[0031] Figure 7 Flow chart of the operation of the lighting device in an embodiment of the present invention.

[0032] Icons: 010 - Lighting device; 100 - Light source module; 110 - Light source assembly; 111 - Second substrate; 112 - Light source module; 113 - Constant current controller; 120 - Control assembly; 121 - First substrate; 1211 - Avoidance opening; 122 - Switching power supply; 123 - Wireless module; 124 - Wireless chip; 125 - Antenna; 130 - Connector; 200 - Radiator; 210 - Installation cavity; 220 - Opening; 300 - Lamp cup; 310 - Light inlet; 320 - Light outlet. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0035] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for differential description and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Please refer to Figure 1 , this embodiment provides a lighting device 010, which can refer to downlights, spotlights, etc., and no specific limitation is made here.

[0039] Please refer to Figure 1 and Figure 2 , the lighting device 010 includes an input wire (not shown in the figure), a radiator 200, a lamp cup 300, and a light source module 100; the input wire includes a neutral wire, a live wire, and a ground wire; the light source module 100 and the lamp cup 300 are both assembled on the radiator 200, and the lamp cup 300 covers the outside of the light source module 100; the ground wire is connected to the radiator 200, and the neutral wire and the live wire are both connected to the light source module 100.

[0040] Among them, the light source module 100 includes a light source component 110 and a control component 120; the light source component 110 includes a second substrate 111, a light source module 112 (for example: LED module) and a constant current controller 113 (for example: linear constant current controller, etc.) provided on the second substrate 111,, the neutral wire and the live wire are both connected to the second substrate 111; the control component 120 includes a first substrate 121 and a switching power supply 122 provided on the first substrate 121; the first substrate 121 is stacked on the light source component 110, and the switching power supply 122 is located on the side of the first substrate 121 away from the light source component 110; the second substrate 111 of the light source component 110 is provided on the radiator 200 so that the switching power supply 122 is located on the side of the second substrate 111 away from the radiator 200.

[0041] The capacitance formula of a parallel plate capacitor is Among them, C is the capacitance, εr is the relative permittivity, k is the electrostatic constant, S is the facing area of the two plates, d is the distance between the two plates, and εr, k, and S are all fixed constants. The capacitance C is affected by the distance d between the two plates. When the distance d increases, the capacitance C will decrease. The light source module 100 of this embodiment stacks the light source component 110 and the first substrate 121 of the control component 120, and enables the switching power supply 122 disposed on the first substrate 121 to be distributed on one side of the light source component 110 away from the radiator 200 of the lighting device 010. In this way, compared with the implementation method of directly disposing the switching power supply 122 on the light source module 100, the control component 120 including the switching power supply 122 is separated, and the value of the parameter d in the formula for calculating the capacitance is the distance between the control component 120 and the light source component 110. The stacked first substrate 121 and the light source component 110 increase the value of the parameter d, thereby reducing the capacitance C. The smaller the capacitance, the larger the capacitive reactance, and the current flowing back through the ground wire decreases, effectively reducing the common-mode interference.

[0042] Moreover, since there is no need to additionally provide components such as capacitors and common-mode inductors, the lighting device 010 does not need to provide a larger installation space, which is beneficial to realizing a compact structural design of the lighting device 010 and improving the problem of the overall volume increase of the lighting device 010.

[0043] It should be understood that in other embodiments, the lighting device 010 may not be provided with a ground wire, that is, the radiator 200 is not grounded through the ground wire.

[0044] Optionally, the first substrate 121 may be a fiberglass board, and the second substrate 111 may be an aluminum substrate. The second substrate 111 has an insulating layer, which is not specifically limited herein.

[0045] Optionally, please refer to Figure 2 and Figure 3 , the first substrate 121 is provided with an avoidance opening 1211, and the avoidance opening 1211 is distributed opposite to the light source module 112. With such a setting, it is possible to avoid the interference of the control component 120 stacked with the light source component 110 on the light output amount, thereby ensuring a sufficient lighting brightness of the lighting device 010.

[0046] The shape of the first substrate 121 can be set as needed; the first substrate 121 of this embodiment is arc-shaped, and the inner circle of the arc-shaped first substrate 121 forms an avoidance opening 1211.

[0047] Of course, in other embodiments, the first substrate 121 may also be in a "concave" shape, etc., which is not specifically limited herein.

[0048] To ensure a reliable electrical connection between the control component 120 and the light source component 110, and to ensure a larger spacing between the control component 120 and the light source component 110 to sufficiently reduce capacitance and common-mode interference; please refer to Figure 2 and Figure 4 , the light source module 100 of this embodiment further includes a connector 130. The connector 130 is connected between the first substrate 121 and the light source component 110 to space the first substrate 121 and the light source component 110 apart. Specifically, the connector 130 is connected between the first substrate 121 and the second substrate 111 to space the first substrate 121 and the second substrate 111 apart, that is, the first substrate 121 can be supported relative to the second substrate 111 through a connecting member. Spacing the first substrate 121 and the second substrate 111 apart through the connector 130 can ensure an increase in the parameter d for calculating the capacitance C, thereby effectively reducing the capacitance and correspondingly reliably reducing the common-mode interference.

[0049] Exemplarily, in the embodiment where the switching power supply 122 is disposed on the second substrate 111 of the light source component 110, the second substrate 111 is an aluminum substrate. If the thickness of the insulating layer of the second substrate 111 is 150 μm, that is, the parameter d = 150 μm; connecting the first substrate 121 and the second substrate 111 through the connector 130, and the switching power supply 122 is disposed on the second substrate 111. If the spacing between the first substrate 121 and the second substrate 111 is 10 mm, the parameter d is the sum of the spacing between the first substrate 121 and the second substrate 111 connected by the connector 130 and the thickness of the insulating layer of the second substrate 111. In the case of the same relative permittivity, electrostatic constant, and facing area of the two plates, substituting into the capacitance calculation formula, it can be known that the embodiment where the switching power supply 122 is disposed on the first substrate 121 spaced apart from the second substrate 111 reduces by nearly 66 times compared to the embodiment where the switching power supply 122 is disposed on the second substrate 111. Obviously, by increasing the spacing between the first substrate 121 and the second substrate 111, the capacitance can be effectively reduced, the capacitive reactance can be made larger, the current flowing back through the ground wire can be reduced, and the common-mode interference can be effectively reduced.

[0050] It should be noted that the connector 130 can be a terminal connector, an electrical plug-in connector, etc., and no specific limitation is made here.

[0051] The number of connectors 130 connecting the first substrate 121 and the second substrate 111 can be selected according to needs. For example: one, two, three, etc., and no specific limitation is made here.

[0052] The light source module 112 and the constant current controller 113 are disposed on the same side of the second substrate 111. The first substrate 121 and the second substrate 111 are spaced apart from each other on the side where the light source module 112 is disposed. The specific distance between the first substrate 121 and the second substrate 111 can be set as needed. For example, it is greater than or equal to 4 mm, and specifically can be 4 mm, 5 mm, 6 mm, 8 mm, 9 mm, 10 mm, 11 mm, 11.5 mm, 11.8 mm, 12 mm, etc. No specific limitation is made herein.

[0053] Of course, in other embodiments, affected by the overall size of the lighting device 010, the distance between the first substrate 121 and the second substrate 111 can also be 1 mm, 2 mm, etc. No specific limitation is made herein.

[0054] Optionally, the first substrate 121 and the second substrate 111 are parallelly distributed. Of course, in other embodiments, an included angle of 1°, 2°, 3°, etc. can also be formed between the first substrate 121 and the second substrate 111. No specific limitation is made herein.

[0055] Please refer to Figure 2 and Figure 4 , the control component 120 of this embodiment further includes a wireless module 123 disposed on the first substrate 121. The wireless module 123 and the switching power supply 122 are distributed on the same side of the first substrate 121. In order to improve the heat dissipation effect of the heat sink 200, in some embodiments, the heat sink 200 is made of a metal material. The wireless module 123 and the switching power supply 122 are disposed on the same side of the first substrate 121, ensuring that the wireless module 123 is distributed on the side of the first substrate 121 facing away from the heat sink 200, which is beneficial to improving the problem that the heat sink 200 shields the wireless signal sent by the wireless module 123.

[0056] Optionally, the wireless module 123 includes a wireless chip 124 and an antenna 125 disposed on the first substrate 121. The wireless chip 124 is distributed between the switching power supply 122 and the antenna 125. Adjacent arrangement of the wireless chip 124 and the antenna 125 can improve the reliability of wireless signal reception and transmission.

[0057] In the related art, please refer to Figure 5 , the wireless module 123 is disposed on the substrate of the light source assembly 110, and the entire light source assembly 110 is wrapped in the heat sink 200. In this way, most of the wireless signals emitted by the wireless module 123 will be blocked (absorbed) by the inner wall of the heat sink 200 and cannot be smoothly emitted. Only a small part of the signals can be emitted after being reflected by the inner wall of the heat sink 200, resulting in signal attenuation and prone to problems such as disconnection and signal abnormality.

[0058] To further ensure that the signals of the wireless module 123 are not blocked or shielded by the heat sink 200, please refer to Figure 1 and Figure 6 , the heat sink 200 is provided with an installation cavity 210 and an opening 220 communicating with the installation cavity 210. The light source assembly 110 is disposed at the bottom of the installation cavity 210. Specifically, the side of the second substrate 111 facing away from the light source module 112 is attached to the bottom of the installation cavity 210, so that the heat of the light source assembly 110 can be reliably conducted to the heat sink 200 for heat dissipation, improving the heat dissipation effect; the wireless module 123 provided on the first substrate 121 of the control assembly 120 is distributed adjacent to the opening 220, that is, both the wireless chip 124 and the antenna 125 are distributed adjacent to the opening 220; in this way, most of the wireless signals emitted by the wireless module 123 can be sent out from the opening 220 of the heat sink 200, effectively improving the problem that the signals are blocked and shielded by the cavity wall of the installation cavity 210 of the heat sink 200.

[0059] It should be noted that the wireless signals emitted by the wireless module 123 specifically may refer to the signals emitted by the antenna 125.

[0060] Furthermore, the lamp cup 300 has a light inlet 310 and a light outlet 320. The light inlet 310 communicates with the opening 220, and the light source assembly 110 is distributed opposite to the light inlet 310. Specifically, the light source module 112 is distributed opposite to the light inlet 310. The light emitted by the light source module 112 enters the light inlet 310 through the opening 220 and finally exits from the light outlet 320; the wireless module 123 provided on the first substrate 121 of the control assembly 120 is distributed adjacent to the light inlet 310, that is, both the wireless chip 124 and the antenna 125 are distributed adjacent to the light inlet 310. With such a setting, the problem that the heat sink 200 blocks and shields the wireless signals sent by the infinite module can be further effectively improved.

[0061] It should be noted that the wireless module 123 can be disposed in the lamp cup 300 and distributed adjacent to the opening 220 of the heat sink 200, that is, the wireless module 123 can extend into the lamp cup 300 through the opening 220 and the light inlet 310; or, the wireless module 123 can be distributed at the joint between the opening 220 and the light inlet 310; or, the wireless module 123 does not extend out of the opening 220 and is located at a position adjacent to the light inlet 310 of the opening 220.

[0062] The manner in which the second substrate 111 is assembled in the installation cavity 210 includes but is not limited to snap connection and connection with fasteners such as bolts; the connection manner between the lamp cup 300 and the heat sink 200 includes but is not limited to snap connection, screw connection, and bonding.

[0063] Please refer to Figure 7, the working process of the lighting device 010 in this embodiment includes: inputting alternating current through the neutral wire and the live wire, and achieving grounding protection through the ground wire; after being powered on, the constant current controller 113 converts the voltage into a voltage suitable for the light source module 112. At the same time, the mains power is supplied to the control component 120 through the connector 130, and after being stepped down by the switching power supply 122, it is given to the wireless module 123. The wireless module 123 works and outputs a control signal, and the control signal is supplied to the light source component 110 through the connector 130. After receiving the control signal, the constant current controller 113 correspondingly controls the brightness and color temperature of the light source module 112. At this time, the lighting device 010 can also be remotely controlled wirelessly.

[0064] In summary, the light source module 100 of the present invention can be used in the lighting device 010, and the light source module 100 can reduce the common mode interference to the switching power supply 122 of the control component 120; moreover, since there is no need to additionally install components such as capacitors and common mode inductors, there is no need for the lighting device 010 to provide a larger installation space, which is conducive to realizing the compact structural design of the lighting device 010 and improving the problem of the overall volume increase of the lighting device 010.

[0065] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A light source module, characterized in that, include: a light source assembly (110); and A control component (120), the control component (120) comprising a first substrate (121) and a switch power supply (122) arranged on the first substrate (121), the first substrate (121) being stacked on the light source component (110), the switch power supply (122) being located on a side of the first substrate (121) away from the light source component (110); wherein: The light source assembly (110) is used to be arranged on a heat sink (200) of a lighting device, and the switch power supply (122) can be located on a side of the light source assembly (110) away from the heat sink (200).

2. The light source module according to claim 1, wherein The light source module further comprises a connector (130), wherein the connector (130) is connected between the first substrate (121) and the light source assembly (110), so that the first substrate (121) and the light source assembly (110) are spaced apart from each other.

3. The light source module according to claim 1, characterized in that, The light source assembly (110) comprises a second substrate (111) and a light source module (112) arranged on the second substrate (111); the first substrate (121) and the second substrate (111) are spaced apart from each other on one side of the light source module (112) arranged thereon; and a spacing between the first substrate (121) and the second substrate (111) is greater than or equal to 4 mm.

4. The light source module according to claim 1, wherein The control component (120) further comprises a wireless module (123) arranged on the first substrate (121); the wireless module (123) and the switching power supply (122) are distributed on the same side of the first substrate (121).

5. The light source module according to claim 4, wherein The wireless module (123) comprises a wireless chip (124) and an antenna (125) which are arranged on the first substrate (121).

6. The light source module according to claim 5, wherein, The wireless chip (124) is distributed between the switching power supply (122) and the antenna (125).

7. The light source module according to claim 1, wherein The light source assembly (110) comprises a second substrate (111), and a light source module (112) and a constant current controller (113) arranged on the second substrate (111); the first substrate (121) is provided with an avoidance opening (1211), and the avoidance opening (1211) is arranged opposite to the light source module (112).

8. A lighting device, characterized in that, It comprises a heat sink (200) and the light source module according to any one of claims 1 to 7, wherein the light source assembly (110) is arranged on the heat sink (200).

9. The lighting device according to claim 8, characterized in that, The heat sink (200) has a mounting cavity (210) and an opening (220) communicating with the mounting cavity (210); the light source assembly (110) is arranged at the bottom of the mounting cavity (210); and the wireless module (123) arranged on the first substrate (121) of the control assembly (120) is distributed adjacent to the opening (220).

10. The lighting device according to claim 8, characterized in that, The lighting device further includes a lamp cup (300), the lamp cup (300) having a light inlet (310) and a light outlet (320), the light source assembly (110) being distributed opposite to the light inlet (310), and the wireless module (123) provided on the first substrate (121) of the control assembly (120) being distributed adjacent to the light inlet (310).

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