Composite discharge structure and illuminator

Abstract

The utility model relates to the technical field of LED lamps, in particular to a composite discharge structure and an illuminator. The composite discharge structure comprises a conductive part which is arranged on the surface of a light-emitting body and is not in direct contact with a printed circuit of the light-emitting body; the discharge component is connected with the signal output end of the printed circuit of the light-emitting body; the conductive component and the discharge component form a frequency-division discharge channel of high-frequency charges and low-frequency charges of the luminous body; on one hand, the conductive part can guide high-frequency charges on the surface of the light-emitting body into the conductive part through the characteristics of the conductive part; on the other hand, the discharge component is connected with the printed circuit to process low-frequency leakage current; therefore, the residual low light is eliminated through cooperation of the conductive component and the discharge component, and the problems that in the prior art, an LED light bar has abnormal micro-current residual in the closed state, the use experience is affected, and the service life of an LED device is damaged are solved.

Description

Technical Field

[0001] This application relates to the technical field of LED lights, and more particularly to a composite discharge structure and a light emitter. Background Technology

[0002] LED strips are widely used in modern lighting and display fields, but in actual use, a "dim glow phenomenon" is quite common, meaning that the strip still emits a weak light even when it is off. This phenomenon not only affects the user experience but may also cause chronic wear and tear on the LEDs due to the continuous small current, thus shortening their lifespan.

[0003] In detail, the "dim lighting phenomenon" mainly stems from three aspects. First, the influence of induced voltage: when the LED strip wiring distance is long, electromagnetic induction occurs between the wires, forming a residual voltage that allows the LED to still receive a small driving current after power is turned off. Second, leakage current from switches: electronic switches in the drive circuit, such as MOSFETs and SCRs, are not completely without current flow even when off; the existing small leakage current continues to power the LED. Third, capacitive coupling effect: parasitic capacitance between adjacent wires or circuit components forms a coupling path, causing AC signal crosstalk and residual charge, indirectly triggering LED illumination.

[0004] Traditional solutions to this problem have significant shortcomings. Increasing the bleeder resistor leads to increased power consumption; optimizing the switch design or improving the wiring method may increase costs, and the suppression effect is limited in complex scenarios.

[0005] In response, this application proposes a comprehensive solution that combines the physical contact of conductive cotton with the discharge characteristics of an RC capacitor. Utility Model Content

[0006] This application provides a composite discharge structure to solve the problem of abnormal microcurrent residue in LED light strips when they are off, which affects the user experience and damages the lifespan of LED devices.

[0007] Firstly, a composite discharge structure is used for dimming and brightening suppression of a light-emitting body, comprising:

[0008] A conductive component disposed on the surface of a light-emitting body and not in direct contact with the printed circuit of the light-emitting body;

[0009] It also includes a leakage component connected to the signal output terminal of the printed circuit of the light-emitting body;

[0010] The conductive component and the discharge component form a frequency-divided discharge channel for the high-frequency charge and low-frequency charge of the light-emitting body.

[0011] Furthermore, the distance between the conductive component and the leakage component is 5 to 15 mm.

[0012] Furthermore, a conductive enhancement layer is provided between the conductive component and the light-emitting body;

[0013] One end of the conductive enhancement layer is electrically connected to the conductive component, and the other end is connected to the light-emitting body.

[0014] Furthermore, the conductive component is disposed at the end of the light-emitting body, and one end of the conductive component is located on the first surface of the light-emitting body, and the other end extends from the first surface to the second surface of the light-emitting body.

[0015] Furthermore, the end of the light-emitting body has a slot, and the conductive component is disposed in the slot.

[0016] Furthermore, the conductive component is conductive cotton;

[0017] The conductive cotton includes an anti-oxidation layer, a pressure-adaptive layer, and an adhesive layer.

[0018] The anti-oxidation layer is disposed on the upper surface of the pressure adaptive layer;

[0019] The adhesive layer is disposed on the lower surface of the pressure adaptive layer.

[0020] Furthermore, the conductive cotton includes a flexible woven fabric containing carbon fiber or polyester fiber, or a self-healing conductive material.

[0021] Furthermore, the thickness of the conductive cotton is 0.5-1.5mm.

[0022] Furthermore, the leakage component includes a capacitor element and a resistor element;

[0023] The capacitor and the resistor are connected in parallel.

[0024] In addition, a light emitter is proposed, including a light-emitting body and a control body electrically connected to the light-emitting body;

[0025] The light-emitting body is provided with one of the above-mentioned composite discharge structures.

[0026] The technical solutions provided in this application have the following advantages compared with the prior art:

[0027] This technical solution provides a composite discharge structure that, through a conductive component disposed on the surface of the light-emitting body and not in direct contact with the printed circuit of the light-emitting body, and a discharge component connected to the signal output terminal of the printed circuit, forms a frequency-dividing discharge channel for high-frequency and low-frequency charges, which can effectively suppress the dimming phenomenon of LEDs. On the one hand, the conductive component can conduct high-frequency charges from the surface of the light-emitting body into the interior of the conductive component using its own characteristics, and preferentially discharge high-frequency charges using its own high resistance characteristics; on the other hand, the discharge component, through connection with the printed circuit, handles low-frequency leakage current. Therefore, the cooperation of the conductive component and the discharge component eliminates residual dim light and improves the user experience. Compared with traditional solutions, it does not require continuous power consumption or significant changes to the existing design, reducing power consumption and cost. At the same time, it can avoid the chronic damage of LEDs caused by residual charges, extending their lifespan. Furthermore, the flexibility of the conductive component and the adjustability of the discharge component make it compatible with various application scenarios.

[0028] In addition, a light emitter includes a light-emitting body and a control unit electrically connected to the light-emitting body. The light-emitting body is provided with the aforementioned composite discharge structure. By setting the composite discharge structure on the light-emitting body, it can efficiently adsorb and discharge high-frequency induced charges through conductive components, and smoothly release low-frequency residual voltage through discharge components. This dual approach completely solves the dim lighting problem in the off state, greatly improving the user experience. At the same time, this architecture does not require significant modifications to the original circuits of the light-emitting body and the control unit, has strong compatibility and controllable cost, and can also avoid the chronic wear and tear of the light-emitting body by residual charges, effectively extending its service life. This allows the entire light emitter to maintain stable operation while also possessing the advantages of high efficiency and durability. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0032] Figure 1 This is a schematic diagram of the structure of the light-emitting body of this application;

[0033] Figure 2 This is a schematic diagram of the composite venting structure of this application assembled on the light-emitting body;

[0034] Figure 3 This is a schematic diagram of the assembly of the light guide component and the light-emitting body in this application;

[0035] Figure 4 This is a schematic diagram of another embodiment of the assembly of the light guide component and the light-emitting body in this application;

[0036] Figure 5 This is a schematic diagram of the structure of the light guide component of this application;

[0037] Figure 6 This is a schematic diagram of the circuit structure of the leakage component in this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Composite venting structure; 11. Conductive component; 111. Anti-oxidation layer; 112. Pressure adaptive layer; 113. Adhesive layer; 12. Venting component; 121. Capacitive element; 122. Resistive element; 13. Conductive enhancement layer; 14. Distance; 15. Thickness;

[0040] 2. Light-emitting body; 21. First surface; 22. Second surface; 23. End; 24. Slot. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0043] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0044] like Figures 1 to 5 As shown, a light emitter includes a light-emitting body 2 and a control body electrically connected to the light-emitting body 2; in this embodiment, the light-emitting body 2 is a flexible LED light strip. The control board is typically mounted on the end 23 of the LED light strip. Printed circuits and LED beads electrically connected to the circuits are arranged on the LED light strip, and the input terminal of the printed circuits is connected to the control board. During operation, the control board adjusts the brightness or switches the LED beads by controlling the conduction state of the printed circuits.

[0045] A composite discharge structure 1 is assembled on the LED light strip and is used to suppress dimness and brightness of the light-emitting body 2.

[0046] Detailed, such as Figure 1 As shown, the composite discharge structure 1 includes a conductive component 11 disposed on the surface of the light-emitting body 2 and not in direct contact with the printed circuit of the light-emitting body 2. It should be noted that the conductive component 11 is disposed on the surface of the light-emitting body 2 and not in direct contact with the printed circuit in order to specifically handle high-frequency induced charges without interfering with the normal operation of the printed circuit: the non-direct contact setting can form a tiny gap, and the high-frequency charge can be quickly transferred to the conductive component 11 through the tiny gap, while the low-frequency charge has difficulty passing through. This allows the high-frequency charge (with stronger "penetration ability" through the gap) to be transferred to the conductive component 11 through this gap and discharged, while preventing low-frequency current (which has difficulty passing through the gap) from accidentally flowing into the conductive component 11 and affecting the circuit stability; the design of being close to the surface of the light-emitting body 2 can ensure that the conductive component 11 is in close contact with the charge accumulation area 14, improving the adsorption and discharge efficiency of high-frequency charges, and ultimately achieving the effect of not interfering with the original circuit function and accurately suppressing the dimming problem caused by high-frequency charges.

[0047] It should also be noted that the printed circuit includes a rigid PCB circuit and an FPC circuit. Applying this technical solution to the printed circuit can effectively achieve the above-mentioned technical effects.

[0048] like Figure 1 As shown, the composite discharge structure 1 also includes a discharge component 12 connected to the signal output terminal of the printed circuit of the light-emitting body 2. It should be noted that connecting the discharge component 12 to the signal output terminal of the printed circuit in the light-emitting body 2 is to precisely construct a dedicated discharge path for low-frequency residual charges (such as switch leakage current and residual charges from circuit parasitic capacitance). The signal output terminal, as a key node for charge flow in the printed circuit, allows the discharge component 12 to be connected here, directly capturing and releasing the low-frequency charges remaining after the circuit is turned off. These charges are difficult to transfer through the non-contact gap between the conductive component 11 and the printed circuit, but can be efficiently conducted away through the circuit connection. Simultaneously, this connection method does not interfere with the normal signal transmission of the printed circuit, ensuring that low-frequency charges are completely discharged to avoid dim lighting.

[0049] In this embodiment, the conductive component 11 and the discharge component 12 are arranged adjacently to form a frequency-dividing discharge channel for high-frequency and low-frequency charges of the light-emitting body 2. These two components cooperate spatially to form a complementary charge handling system. Specifically, the conductive component 11 absorbs and discharges high-frequency charges through non-contact capacitive coupling, while the discharge component 12 efficiently releases low-frequency residual charges through direct connection with the printed circuit. The adjacent arrangement ensures that the two types of charges do not interfere with each other and work together efficiently, solving the problem that traditional single discharge methods cannot take into account both high and low frequency charges, resulting in incomplete suppression of dim lighting. This design avoids mutual interference between high-frequency and low-frequency charges and can completely remove residual charges in the circuit, ultimately achieving efficient suppression of dim lighting in LED strips without affecting normal circuit operation, thus balancing suppression effect and LED strip operation stability.

[0050] In a specific embodiment, such as Figure 2 As shown, in order to balance the synergistic efficiency and anti-interference capability of the conductive component 11 and the discharge component 12, the distance 14 between the conductive component 11 and the discharge component 12 is set to 5 to 15 mm.

[0051] It should be understood that if the distance 14 is too close, it may cause high-frequency and low-frequency charges to interfere with each other during discharge (such as high-frequency signals entering the low-frequency path), while if it is too far, it will weaken the coordination effect of frequency division discharge. Setting the distance 14 between the conductive component 11 and the discharge component 12 to 5 to 15 mm can ensure that the adsorption of high-frequency charges by the conductive component 11 and the conduction and discharge of low-frequency charges by the discharge component 12 are independent and efficient. This solves the problem of reduced discharge efficiency or signal interference caused by improper positioning, and ultimately achieves accurate splitting and complete release of high and low frequency charges, improving the stability of dim and bright suppression.

[0052] In a specific embodiment, such as Figure 3 As shown, in order to enhance the charge conduction capability between the conductive component 11 and the light-emitting body 2, a conductive enhancement layer 13 is provided between the conductive component 11 and the light-emitting body 2; one end of the conductive enhancement layer 13 is electrically connected to the conductive component 11, and the other end is connected to the light-emitting body 2.

[0053] In this embodiment, the conductive enhancement layer 13 is a tin-plated layer, which is disposed on the side of the conductive component 11 facing the light-emitting body 2. When the conductive component 11 is assembled onto the light-emitting body 2, the tin-plated layer serves as a priority contact layer and as a charge discharge channel when the device is turned off. Specifically, when the light-emitting body 2 is turned off, the high-frequency charge generated by the residual light on the surface is first absorbed by the low-impedance tin-plated layer, and then introduced into the conductive component 11 for buffered release, thereby effectively eliminating the residual light on the light-emitting body 2 and effectively achieving dim-brightness suppression.

[0054] In one specific embodiment, as well as Figure 3 As shown, in order to expand the capture range of high-frequency charges, a conductive component 11 is disposed at the end 23 of the light-emitting body 2 (usually, the end 23 of the light-emitting body 2 will accumulate more high-frequency charges), and one end of the conductive component 11 is located on the first surface 21 of the light-emitting body 2, and the other end extends from the first surface 21 to the second surface 22 of the light-emitting body 2. It should be understood that this design solves the problem of incomplete charge capture when a single surface is used, realizing the all-round adsorption and release of high-frequency charges around the end 23, further improving the thoroughness of dim and bright suppression, and increasing the dim and bright suppression effect.

[0055] In other embodiments, the conductive component 11 can also be arranged in multiple locations on the light-emitting body 2 as needed to capture locally accumulated high-frequency charges.

[0056] In a specific embodiment, such as Figure 4As shown, the end 23 of the light-emitting body 2 has a slot 24, and the conductive component 11 is disposed in the slot 24. In this embodiment, the end 23 of the light-emitting body 2 is provided with a slot 24, and the conductive component 11 is assembled and fixed through the slot 24. This slot 24 structure design can ensure that the conductive component 11 remains firmly connected when the flexible LED light strip moves frequently, effectively preventing it from falling off.

[0057] In a specific embodiment, such as Figure 5 As shown, the conductive component 11 is conductive cotton; the conductive cotton includes an anti-oxidation layer 111, a pressure adaptive layer 112, and an adhesive layer 113; the anti-oxidation layer 111 is disposed on the upper surface of the pressure adaptive layer 112; and the adhesive layer 113 is disposed on the lower surface of the pressure adaptive layer 112.

[0058] This design is intended to adapt to the usage environment and functional requirements of the light-emitting body 2. The anti-oxidation layer 111 prevents the conductive cotton from losing conductivity due to surface oxidation after long-term use; the pressure-adaptive layer 112 maintains close contact with the surface when the light-emitting body 2 is bent or vibrated; and the adhesion layer 113 ensures that the conductive component 11 is stably fixed to the light-emitting body 2. This layered structure solves the problems of easy oxidation, unstable contact, and insecure installation of traditional conductive materials, achieving the beneficial effects of extending service life, improving environmental adaptability, and ensuring continuous and effective high-frequency discharge.

[0059] In another embodiment, the conductive cotton includes a flexible woven fabric containing carbon fiber or polyester fiber or a self-healing conductive material.

[0060] In detail, the fiber structure of the flexible woven fabric can adapt to the flexible or curved shape of the light-emitting body 2, the high conductivity of carbon fiber can improve the high-frequency charge transfer efficiency, and the self-healing material can restore the conductive network after local damage. This material selection solves the problem that traditional rigid conductive materials are difficult to fit the flexible light-emitting body 2 or fail to function after damage, achieving the effect of taking into account flexibility, high conductivity and durability.

[0061] In a preferred embodiment, as well as Figure 5 As shown, the thickness 15 of the conductive cotton is 0.5-1.5mm. It should be understood that if it is too thin, it may lead to insufficient conductive path and obstruction of high-frequency charge discharge, while if it is too thick, it will increase the volume burden of the light-emitting body 2 (especially for thin light-emitting devices) and may affect the adhesion to the surface. This thickness range of 15 ensures that the conductive cotton has sufficient conductive fiber density to efficiently transfer charge, and can also be adapted to light-emitting bodies 2 such as flexible light strips that are sensitive to thickness 15. This solves the problem of functional failure or inconvenient installation caused by improper thickness 15, and achieves a balance between charge capture capability and installation adaptability.

[0062] In one specific embodiment, conductive cotton, due to its inherent physical characteristics, is suitable for die-cutting and pressing processes, can be adapted to irregularly shaped light strips, and has wide applicability. It can also be made in different colors according to actual usage requirements; for example, when applied to flexible OLED screens, for the sake of overall aesthetics, the conductive cotton can be made into a transparent conductive material.

[0063] In a specific embodiment, such as Figure 2 and Figure 6 As shown, the leakage component 12 includes a capacitor element 121 and a resistor element 122; the capacitor element 121 and the resistor element 122 are connected in parallel.

[0064] When in use, the capacitor element 121 can quickly absorb the residual charge in the printed circuit after it is turned off, and then slowly release the low-frequency leakage current through the resistor element 122.

[0065] The combination of series or parallel circuits can be adjusted by parameters to accommodate low-frequency charges of different sizes. This design solves the problem that a single component (resistor or capacitor only) cannot simultaneously achieve both fast and slow discharge, thus completely eliminating low-frequency charges and ensuring that there is no residual current causing dim lighting after the light strip is turned off. At the same time, it avoids the discharge process from impacting the circuit.

[0066] In summary, the composite discharge structure 1 provided by this technical solution, through the synergistic effect of the conductive component 11 and the discharge component 12, forms a frequency-divided discharge channel for high-frequency and low-frequency charges, which can effectively suppress the dimming phenomenon of LEDs. This technical solution has a wide range of practical applications, not only in flexible LED light strips but also in flexible OLED screens to achieve leakage current compensation.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0074] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A composite relief structure for use in suppressing the darkening of a light emitting body, characterized by comprising: The composite discharge structure comprises: a conductive component arranged on the surface of the light-emitting body and not in direct contact with the printed circuit of the light-emitting body; a discharge component connected to the signal output end of the printed circuit of the light-emitting body; the conductive component and the discharge component form a discharge channel for high-frequency charges and low-frequency charges of the light-emitting body.

2. The composite discharge structure according to claim 1, wherein: the distance between the conductive component and the discharge component is 5-15 mm.

3. The composite discharge structure according to claim 1, wherein: the conductive component has a conductive enhancement layer between the conductive component and the light-emitting body; one end of the conductive enhancement layer is electrically connected to the conductive component, and the other end is connected to the light-emitting body.

4. The composite discharge structure according to claim 2, wherein: the conductive component is arranged at the end of the light-emitting body, and one end of the conductive component is located on the first surface of the light-emitting body, and the other end extends from the first surface to the second surface of the light-emitting body.

5. The composite discharge structure according to claim 4, wherein: the end of the light-emitting body has a clamping groove, and the conductive component is arranged in the clamping groove.

6. The composite discharge structure according to any one of claims 1-5, wherein: the conductive component is conductive cotton; the conductive cotton comprises an oxidation-preventing layer, a pressure self-adapting layer, and an adhesive layer; the oxidation-preventing layer is arranged on the upper surface of the pressure self-adapting layer; the adhesive layer is arranged on the lower surface of the pressure self-adapting layer.

7. The composite discharge structure according to claim 6, wherein: the conductive cotton comprises a flexible braid containing carbon fibers or polyester fibers, or is a self-repairing conductive material.

8. The composite discharge structure according to claim 6, wherein: the thickness of the conductive cotton is 0.5-1.5 mm.

9. The composite discharge structure according to claim 1, wherein: the discharge component comprises a capacitor element and a resistor element; the capacitor element and the resistor element are connected in parallel.

10. A light-emitting device, comprising: a light-emitting body and a control body electrically connected to the light-emitting body; the light-emitting body is provided with a composite discharge structure according to any one of claims 1-9.

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