CN215336206U - LED lamp capable of improving surge resistance - Google Patents

Abstract

The application discloses an LED lamp capable of emitting light uniformly and improving anti-surge capacity, which comprises a lamp body with a built-in light-emitting component, a driving box which is arranged outside the lamp body and made of metal, and a driving module which is arranged in the driving box, wherein the driving module is provided with an alternating current input end and a direct current output end, the light-emitting component comprises a substrate which is coupled with the direct current output end and an LED lamp bead which is arranged on the substrate, and the alternating current input end is coupled with the driving box through an anti-surge unit; compared with the prior art, the scheme has the advantages that the anti-surge unit can avoid the influence of power grid surge on the driving module, so that the service life of the driving module can be prolonged.

Description

LED lamp capable of improving surge resistance

Technical Field

The application relates to the field of LED lamps, in particular to an LED lamp capable of improving anti-surge capacity.

Background

The LED lamp has the advantages of good illumination uniformity, soft and comfortable light, environment-friendly materials, low power consumption and the like, and is a popular indoor lighting lamp at present.

The LED lamp comprises a lamp body internally provided with a light-emitting component and a driving module arranged outside the lamp body, and an external power supply is electrically connected with the light-emitting component through the driving module. In the actual use process of the LED lamp, due to the fact that the voltage of a power grid is unstable, the driving module is easily damaged by surge impact of the power grid, and the LED lamp cannot normally work.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides an improve LED lamps and lanterns of anti-surge ability, including built-in light emitting component's lamp body, set up in the drive box of making by the metal outside the lamp body and set up the drive module in the drive box, drive module has alternating current input end and direct current output end, light emitting component is including coupling direct current output end's base plate with set up the LED lamp pearl on the base plate, alternating current input end is coupled through an anti-surge unit the drive box.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the anti-surge unit includes a voltage dependent resistor and a Y capacitor connected in series.

Optionally, the ac input end includes a zero line input end and a live line input end, and the zero line input end or the live line input end is coupled to the anti-surge unit.

Optionally, the driving module includes a preceding stage rectification filter circuit, a power conversion circuit and a subsequent stage rectification filter circuit, the power conversion circuit includes a transformer, a primary winding of the transformer is connected to the preceding stage rectification filter circuit, and a secondary winding of the transformer is connected to the subsequent stage rectification filter circuit.

Optionally, the number of the light emitting assemblies is strip-shaped, and the number of the light emitting assemblies is multiple and the light emitting assemblies are arranged side by side.

Optionally, all the light emitting assemblies are connected in parallel through the conductive bars;

the direct current output end is coupled with each lamp strip through the conducting strip.

Optionally, the surface of the substrate and/or the surface of the conductive strip are coated with solder resist ink.

Optionally, the LED lamp is a direct type panel lamp.

Optionally, the lamp body includes:

the central area of the back plate is raised to form a cavity for accommodating the light-emitting component, the cavity comprises a flat bottom wall and an inclined side wall, and the light-emitting component is fixed on the bottom wall;

the diffusion plate has a light transmission function and is arranged opposite to the back plate to seal the cavity;

the frame is formed by splicing a plurality of frame strips, and each frame strip is connected with the diffusion plate and the corresponding edge of the back plate.

Optionally, the back plate and the frame are both made of metal;

the driving box is attached to the back plate and/or the frame.

The anti-surge unit in this application can avoid drive module to receive the influence of electric wire netting surge to can reach extension drive module's life.

Drawings

Fig. 1 is a schematic structural diagram of a driving module in an LED lamp according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an LED lamp according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of the LED lamp of FIG. 2;

FIG. 4 is a schematic view of a partial structure of the LED lamp shown in FIG. 2;

FIG. 5 is a schematic view of a partial structure of the LED lamp shown in FIG. 2;

FIG. 6 is a schematic structural diagram of the LED lamp bead in FIG. 5;

FIG. 7 is a schematic view of the structure of the substrate shown in FIG. 5;

FIG. 8 is a schematic diagram of a conductive strip structure in FIG. 5;

fig. 9 is a schematic structural view of the frame strip in fig. 4.

The reference numerals in the figures are illustrated as follows:

10. a lamp body; 11. a back plate; 111. a central region; 112. a bottom wall; 113. an edge region; 114. a side wall; 115. a rib is protruded; 116. a cavity; 12. a diffusion plate; 13. a frame; 131. a frame strip; 132. a first mounting surface; 133. a second mounting surface; 134. a horizontal portion; 135. a vertical portion; 136. thickening the portion; 137. vertically folding; 138. a screw slot;

20. a light emitting assembly; 21. a substrate; 211. a first metal layer; 212. a first insulating layer; 213. a first circuit layer; 214. a second window; 22. LED lamp beads; 221. a lens; 222. a convex foot; 23. a conductive strip; 231. a second insulating layer; 232. a second circuit layer; 233. a second solder resist layer; 234. a first window;

30. a drive cartridge;

40. a drive module; 41. an alternating current input end; 411. a zero line input end; 412. a live wire input end; 42. a DC output terminal; 43. a preceding stage rectification filter circuit; 44. a power conversion circuit; 45. a post-stage rectification filter circuit;

50. an anti-surge unit; 51. a voltage dependent resistor; 52. and a Y capacitor.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, the present application provides an LED lamp, which includes a lamp body 10 with a built-in light emitting component 20, and a driving module 40 disposed outside the lamp body 10, wherein the driving module 40 has an ac input terminal 41 and a dc output terminal 42, and the light emitting component is coupled to the dc output terminal 42.

The LED lamp further includes a driving box 30 made of metal, the driving box 30 is disposed outside the lamp body 10, and the driving module 40 is disposed in the driving box 30. The drive cassette 30 facilitates fixing and protecting the drive module 40, while also simplifying the steps of repairing or replacing the drive module 40, thereby reducing the expenditure of time and labor costs.

The light emitting assembly comprises a substrate 21 and an LED lamp bead 22 disposed on the substrate 21, and the substrate 21 is coupled to the dc output end 42 of the driving module 40. In some embodiments, the light emitting assembly further comprises a lens 221 covering the LED lamp bead 22, and the light emitted from the LED lamp bead 22 is diffused through the lens 221.

In the actual use process of the LED lamp, because the voltage of the power grid is unstable, the driving module 40 is easily damaged by the surge impact of the power grid, so that the LED lamp cannot work normally. In order to solve the technical problem, the ac input terminal 41 is coupled to the driving box 30 through an anti-surge unit 50, so that the driving module 40 can be prevented from being affected by the power grid surge, and the service life of the driving module 40 can be prolonged. Wherein, the anti-surge unit 50 achieves the effect of grounding the anti-surge unit 50 by coupling the driving box 30. In some embodiments, anti-surge unit 50 includes a voltage dependent resistor 51 and a Y capacitor 52 in series.

In the present embodiment, the ac input 41 includes a neutral input 411 and a live input 412, and the neutral input 411 or the live input 412 is coupled to the anti-surge unit 50. In the present embodiment, the voltage dependent resistor 51 is coupled to the zero line input terminal 411 or the live line input terminal 412; the Y capacitor 52 is coupled to the driving box 30.

In a specific configuration of the driving module 40, referring to an embodiment, the driving module 40 includes a front stage rectifying and filtering circuit 43, a power converting circuit 44 and a rear stage rectifying and filtering circuit 45, the front stage rectifying and filtering circuit 43 is coupled to the ac input terminal 41, and the rear stage rectifying and filtering circuit 45 is coupled to the light emitting device.

The power conversion circuit 44 includes a transformer, a primary winding of which is connected to the front stage rectifying and filtering circuit 43, and a secondary winding of which is connected to the rear stage rectifying and filtering circuit 45. The front stage rectifying and filtering circuit 43, the power conversion circuit 44 and the rear stage rectifying and filtering circuit 45 all adopt the prior art.

In some embodiments, as shown in fig. 3 and 5, the number of the light emitting elements 20 is plural; the light emitting elements 20 are strip-shaped and arranged side by side. The LED lamp beads 22 are distributed in a matrix form, so that light sources are uniformly distributed. In order to facilitate the connection of the driving module 40 with the light emitting elements 20, all the light emitting elements 20 are connected in parallel by the conductive bars 23; the dc output 42 is coupled to each light emitting element 20 via a conductive strip 23. The conductive strips 23 press against all the light emitting elements 20, perpendicularly intersecting all the light emitting elements 20. Wherein, each light emitting component 20 is longitudinally arranged at intervals, and the conductive strips 23 are transversely arranged.

The substrate 21 may be a metal substrate, preferably an aluminum substrate, or an FR-4 glass fiber board. In some embodiments, the substrate 21 is coated with white solder resist ink to improve light reflection efficiency. As in fig. 6 to 7, in some embodiments, the substrate 21 includes a first metal layer 211, a first insulating layer 212, and a first circuit layer 213, which are sequentially disposed. In order to provide protection for the first circuit layer 213, the surface of the substrate 21 is coated with white solder resist ink to form a first solder resist layer, and the first solder resist layer has a window to expose a pad for soldering the LED lamp bead 22.

The lens 221 on the light emitting assembly 20 is mainly used for light diffusion, the lens 221 is fixed on the substrate 21 through epoxy glue or UV glue, in order to facilitate installation, the back surface of the lens 221 is provided with a convex pin 222, and a corresponding positioning hole matched with the convex pin 222 is arranged on the substrate 21.

As shown in fig. 5 and 8, in some embodiments, the conductive strip 23 is a strip structure, and includes a second insulating layer 231, a second circuit layer 232, and a second solder resist layer 233, wherein the second insulating layer 231 is made of an insulating resin material; the surfaces of the conductive strips 23 are coated with solder resist ink to form the second solder resist layer 233 so that the positions where the conductive strips 23 are disposed also have a light reflecting function. For connection, the edge of the conductive strip 23 has a first window 234 without solder resist ink, the position of the substrate 21 near the soft conductive strip 23 also has a second window 214 without solder resist ink, and the two openings are provided with solder pads, which are electrically connected by soldering.

In this embodiment, the LED lamp is a direct type panel lamp. Of course, in other embodiments, the LED lamp may also be a down lamp, an atmosphere lamp, or the like.

When the LED lamp is a direct-type panel lamp, the specific structure of the lamp body 10 is set as shown in fig. 2 to 4, referring to one embodiment, the lamp body 10 includes a frame 13, a back plate 11 and a diffusion plate 12, the back plate 11 is installed on the back surface of the frame 13, the diffusion plate 12 is installed on the front surface of the frame 13, the light emitting assembly 20 is disposed between the back plate 11 and the diffusion plate 12 and installed on the lower surface of the back plate 11, and the driving module 40 is installed on the back surface of the lamp body 10. The light emitting assembly 20 may be fixed to the lower surface of the back plate 11 by screws, preferably by bonding with a heat conductive adhesive.

The central region 111 of the back plate 11 is raised to form a cavity 116 for accommodating the light emitting assembly, the cavity 116 includes a flat bottom wall 112 and an inclined side wall 114; each light emitting assembly is fixed on the bottom wall 112; the diffusion plate 12 is arranged opposite to the back plate 11 to seal the cavity 116, the diffusion plate 12 has a light transmission function, light emitted by the light emitting assembly 20 sequentially passes through the diffusion plate 12, and after the light is diffused, a plurality of LED point light sources form a uniform surface light source; the frame 13 is formed by splicing a plurality of (usually four) frame strips 131, and each frame strip 131 is connected to the diffusion plate 12 and the corresponding edge of the back plate 11.

In the specific configuration of the frame strip 131, referring to one embodiment, the frame strip 131 is made of a metal profile (e.g. aluminum alloy), and the ends of the adjacent frame strips 131 are welded and fixed. Of course, the frame strips 131 may also be made of a polymer material by injection molding, and since the polymer material cannot be welded, corner pieces for connecting adjacent frame strips 131 are generally required to be disposed at corners of the frame 13, or the adjacent frame strips 131 are connected by lap joints, but compared with a welding process, the flatness of the frame 13 is not good enough.

In some embodiments, as shown in fig. 4 and 9, the cross section of the frame strip 131 is an L-shaped structure, and includes a horizontal portion 134 and a vertical portion 135, the edge of the diffuser plate 12 and the edge of the back plate 11 are overlapped on the horizontal portion 134, and the vertical portion 135 encloses a limited space for shielding the installation structure of the edge of the back plate 11, so as to achieve decoration and certain protection.

In order to increase the strength of the sectional material, according to one embodiment, the thickness of the inner side of the corner of the frame strip 131 is increased to form a thickened portion 136, so that a step structure is formed on the horizontal portion 134 to form a first mounting surface 132 and a second mounting surface 133 on the step structure and the horizontal portion 134, the edge of the diffuser plate 12 is overlapped on the lower first mounting surface 132, and the edge of the back plate 11 is overlapped on the upper second mounting surface 133 and fixed by fastening screws. To save material, in some embodiments, the thickened portion 136 is a hollow structure.

In some embodiments, the edge of the back panel 11 is fixed to the frame 13 by fastening screws, and the frame strip 131 is provided with screw slots 138 along the length direction thereof. In some embodiments, the horizontal portion 134 has a vertical fold 137 in the middle of the upper surface, the gap between the vertical fold 137 and the step structure forms the screw slot 138, and the top surface of the vertical fold 137 supports the edge of the backboard 11.

From the viewpoint of processing and heat dissipation, the back plate 11 is stamped from a metal plate (e.g., ST13) to form a raised housing-like structure, which includes a central region 111 (e.g., including the bottom wall 112) and an edge region 113 (e.g., including the side wall 114) disposed at the periphery of the central region 111. The edge region 113 overlaps the frame strip 131, and the light emitting assembly 20 is disposed on the lower surface of the central region 111.

In some embodiments, the edge area 113 of the back plate 11 is deformed by itself to form a protruding rib 115 extending along the side length direction of the back plate 11, and the protruding rib 115 can increase the supporting strength of the whole back plate 11, especially the structural strength of the edge area 113, and prevent the edge area 113 from pulling the frame 13, so that the frame 13 is deformed, and further, the LED lamp is applied to the keel on the ceiling in a contact manner, and no gap occurs.

In some embodiments, to reduce the difficulty of machining the rib 115, the edge region 113 is bent over itself to form the rib 115. The deformation is carried out by conventional processing methods such as mechanical punching. In order to reduce the weight of the backboard 11 itself, the thickness of the backboard 11 is 0.1mm to 0.4mm in some embodiments, while satisfying the supporting strength of the backboard 11. Preferably, the thickness of the back plate 11 is 0.2 mm.

The rib 115 presses against the edge of the diffuser 12 to make it close to the first mounting surface 132, because the back plate 11 has a certain elasticity, when the rib 115 presses against the diffuser 12, the rib 115 is elastically deformed, so that the rib 115 applies pressure to the diffuser 12, the rib 115 and the first mounting surface 132 cooperate to clamp the edge of the diffuser 12, so as to prevent the edge of the diffuser 12 from being bent, and thus prevent the center of the diffuser 12 (the geometric center of the diffuser 12 or the geometric center close to the diffuser 12) from collapsing downward.

In this embodiment, the driving box 30 abuts against the back plate 11 and/or the frame 13, so that the driving box 30 has a grounding effect. In some embodiments, there is a gap between the vertical portion 135 and the back plate 20, the driving box 30 is hidden in the gap, and when the driving box 30 is hidden in the gap, two opposite sides of the driving box 30 abut against the back plate 11 and the frame 13, respectively.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (10)

1. The LED lamp capable of improving the anti-surge capacity is characterized by comprising a lamp body with a built-in light-emitting component, a driving box which is arranged outside the lamp body and made of metal, and a driving module which is arranged in the driving box, wherein the driving module is provided with an alternating current input end and a direct current output end, the light-emitting component comprises a base plate which is coupled with the direct current output end and an LED lamp bead which is arranged on the base plate, and the alternating current input end is coupled with the driving box through an anti-surge unit.

2. The LED lamp with the improved surge resistance capability of claim 1, wherein the surge resistance unit comprises a piezoresistor and a Y capacitor which are connected in series.

3. The LED lamp with the improved surge resistance of claim 1, wherein the AC input end comprises a neutral input end and a live input end, and the neutral input end or the live input end is coupled to the surge resistance unit.

4. The LED lamp with the improved surge resistance according to claim 1, wherein the driving module comprises a front stage rectifying and filtering circuit, a power conversion circuit and a rear stage rectifying and filtering circuit, the power conversion circuit comprises a transformer, a primary winding of the transformer is connected with the front stage rectifying and filtering circuit, and a secondary winding of the transformer is connected with the rear stage rectifying and filtering circuit.

5. The LED lamp with the improved surge resistance as recited in claim 1, wherein the light emitting elements are strip-shaped, are multiple in number, and are arranged side by side.

6. The LED lamp with the improved surge resistance of claim 5, wherein all the light emitting components are connected in parallel through conducting bars;

the direct current output end is coupled with each lamp strip through the conducting strip.

7. The LED lamp with the improved surge resistance capability of claim 6, wherein the surface of the substrate and/or the surface of the conductive strip are coated with solder resist ink.

8. The LED lamp with the improved surge resistance of claim 1, wherein the LED lamp is a direct type panel lamp.

9. The LED lamp with the improved surge resistance of claim 1, wherein the lamp body comprises:

the central area of the back plate is raised to form a cavity for accommodating the light-emitting component, the cavity comprises a flat bottom wall and an inclined side wall, and the light-emitting component is fixed on the bottom wall;

the diffusion plate has a light transmission function and is arranged opposite to the back plate to seal the cavity;

the frame is formed by splicing a plurality of frame strips, and each frame strip is connected with the diffusion plate and the corresponding edge of the back plate.

10. The LED lamp with the improved surge resistance of claim 9, wherein the back plate and the bezel are made of metal;

the driving box is attached to the back plate and/or the frame.

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