LED light source module and lamp

Abstract

The invention provides an LED light source module and a lamp, the LED light source module comprises a light source plate, a waterproof isolation layer and an integrated lens, the light source plate is provided with an LED chip serving as a light source, the integrated lens comprises a plate body and a lens body arranged on the plate body, the lens body comprises a light incoming surface and a light outgoing surface which are oppositely arranged, and the waterproof isolation layer is arranged on the light incoming surface. The light incident face is an arc face protruding towards the LED chips from the plate body, and the space between the light source plate and the integrated lens is filled with a waterproof isolation layer. According to the LED light source module provided by the invention, the glue above each LED chip is in contact with the cambered incident surface of the lens body, and the convex incident surface extrudes and exhausts air at the top of the LED chip during contact, so that the lighting effect is improved. The waterproof isolation layer formed by glue pouring is covered by the integrated lens, the glue surface is not directly exposed, and the defect that silica gel adsorbs dust is avoided. The light source, the glue and the lens are integrally bonded, and the effects of improving the optical efficiency and enhancing the waterproof performance are achieved.

Description

Technical Field

[0001] The invention relates to an LED light source module and a lamp. Background Art

[0002] In LED light source modules, lenses are usually needed to distribute the light emitted by the LED light source. In multi-chip modules, integrated lenses made of PMMA and PC materials are common light distribution components, such as Figure 6a As shown, a single lens A2 covers the LED chip A1, and there is an air layer A3 between the lens A2 and the LED chip A1, which causes light efficiency loss. At the same time, such a structure needs to be equipped with an additional independent sealing structure for waterproofing requirements.

[0003] In order to achieve waterproof sealing, one solution is to use silicone injection technology to form the silicone lens and the light source module into one piece through mold injection, such as Figure 6b As shown. The silicone lens B3 and the LED chip B1 are completely attached together, with no air layer in between, thereby improving the light effect. At the same time, the silicone lens B3 covers the light source board B2 as a whole, which plays a waterproof and isolating role for the LED chip B1 set thereon. However, the silicone material has strong electrostatic adsorption, is easy to stick to dust, and has poor self-cleaning ability. As the use time increases, the light effect will gradually decrease due to external dust. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide an LED light source module emergency lamp with low light loss and waterproof effect.

[0005] In order to achieve the above-mentioned effect, the technical solution adopted by the present invention is to provide an LED light source module, which is characterized in that it includes a light source board, a waterproof isolation layer, and an integrated lens. The light source board is provided with an LED chip as a light source. The integrated lens includes a board body and a lens body arranged on the board body. The lens body includes a light incident surface and a light emitting surface arranged opposite to each other. The board body at least covers a portion of the surface of the side of the light source board where the LED chip is arranged. The lens body and the LED chip are arranged correspondingly. The light incident surface is an arc surface convex from the board body toward the direction of the LED chip. The light emitting surface is arranged on the side of the board body away from the LED chip. The waterproof isolation layer is filled between the light source board and the integrated lens.

[0006] Furthermore, the projection of the point farthest from the light incident surface and the plate in the direction of the optical axis of the LED chip falls within the LED chip.

[0007] Furthermore, the light incident surface is a spherical surface protruding from the plate body toward the LED chip.

[0008] Furthermore, the integrated lens further comprises a claw, and the light source board is provided with a buckle position cooperating with the claw, and the integrated lens is buckledly connected to the light source board.

[0009] Furthermore, the waterproof isolation layer is made of silicone material, and the waterproof isolation layer is formed by filling self-leveling silicone on the light source board and then curing it.

[0010] Furthermore, the light incident surface is bonded to the waterproof isolation layer or the LED chip.

[0011] Furthermore, the LED light source module also includes a heat dissipation housing, the heat dissipation housing includes a groove, and the light source board is arranged at the bottom of the groove.

[0012] Furthermore, the number of the LED chips is more than 2, the number of the lens bodies is equal to the number of the LED chips, the lens bodies and the LED chips are arranged in a one-to-one correspondence, and the plate body and each of the lens bodies are integrally formed.

[0013] Furthermore, the LED light source module includes more than two integrated lenses, and a gap is formed between each of the integrated lenses.

[0014] The present application also provides a lamp, comprising the light source module as described above, and the lamp is an outdoor lamp.

[0015] In the LED light source module provided by the present invention, glue above each LED chip contacts the arc light incident surface of the lens body, and the arc light incident surface protrudes toward the LED chip. When in contact, the convex light incident surface squeezes and removes the air on the top of the LED chip, thereby improving the light effect. The waterproof isolation layer formed by the glue filling is covered by the integrated lens, and the glue surface is not directly exposed, thereby avoiding the disadvantage of silica gel absorbing dust. The waterproof isolation layer can directly achieve waterproofing. The light source, glue, and lens are bonded together to achieve the effect of improving optical efficiency and enhancing waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of an LED light source module according to a preferred embodiment of the present invention;

[0017] Figure 2 yes Figure 1 The cross-sectional view of the LED light source module after assembly;

[0018] Figure 3 yes Figure 2 A partial enlarged view of point I in the middle;

[0019] Figure 4 It is a schematic structural diagram of an integrated lens according to a preferred embodiment of the invention;

[0020] Figure 5yes Figure 4 Another angle view of the integrated lens;

[0021] Figure 6a , 6b It is a schematic diagram of the prior art solution. DETAILED DESCRIPTION

[0022] The LED light source module and the lamp proposed by the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The LED light source module of a preferred embodiment of the present application is as follows Figure 1 , Figure 2 , Figure 3 As shown, the LED light source module includes a heat dissipation housing 4 , a light source board 1 , a waterproof isolation layer 6 , and an integrated lens 3 .

[0024] The heat dissipation housing 4 includes a base plate 401 and a side wall 402 extending upward from the outer periphery of the base plate 401, and the base plate 401 and the side wall 402 form a groove 404 as a storage space for accommodating the light source board 1. The light source board 1 is arranged on the base plate 401 and fits the base plate 401, and dissipates heat outward through the heat dissipation housing 4. In order to achieve a better heat dissipation effect, in this embodiment, a heat dissipation fin 403 is also provided on the side of the base plate 401 away from the light source board 1. In other preferred embodiments, a heat pipe may also be provided, or other heat dissipation materials such as graphene may be superimposed, which is not limited in the present application. In addition to the light source board, a drive module, a control module, etc. may also be provided in the heat dissipation housing 4, and the notch of the heat dissipation housing 4 forming the groove 404 may also be provided with a light-transmitting panel or a reflective cover or other light distribution elements, which can be flexibly arranged according to the application scenario, which is not limited in the present application.

[0025] like Figure 1 As shown, a plurality of LED chips 2 are arranged in an array on the light source board 1, and an integrated lens 3 covers the light source board 1. The structure of the integrated lens 3 is as follows: Figure 4 , Figure 5 As shown, it includes a plate body 301 and a lens body 302 arranged on the plate body 301. The number of lens bodies 302 is equal to that of LED chips 2, and each lens body 302 is arranged in a one-to-one correspondence with each LED chip 2. In order to fix the relative positions of the two, a claw 303 is also provided on the integrated lens 3, and a through hole is provided at a relative position of the light source board 1 to form a buckle position 101 that cooperates with the claw 303. When connected, the claw 302 is inserted into the buckle position 101, and the integrated lens 3 and the light source board 1 form a buckle connection. A through hole 305 is also provided on the integrated lens 3, and a screw 5 passes through the through hole 305 to fix the integrated lens 3 and the light source board 1 together on the heat dissipation housing 4.

[0026] In this embodiment, the plate body 301 and each lens body 302 are integrally formed of PMMA or PC material. Figure 3 As shown, the lens body 302 is used as a light distribution element, including a light incident surface 3021 and a light emitting surface 3022 arranged opposite to each other. The lens body 302 is arranged above the LED chip 2, and the light enters the lens body 302 from the light incident surface 3021 and then exits from the light emitting surface 3022. The plate body 301 at least covers a part of the surface of the light source board 1 on which the LED chip 2 is arranged, and a waterproof isolation layer 6 is formed between the plate body 301 and the light source board 1 by injection. The traditional one-piece lens form is as follows Figure 6a The lens A2 in the embodiment has a cavity for accommodating the light source formed on its light-entering surface. During the process of glue injection, the air in the cavity cannot be discharged. After completion, air will remain in the cavity, affecting the light effect. To avoid this situation, the light-entering surface 3021 in this embodiment is an arc surface protruding from the plate body 301 toward the LED chip 2, specifically a spherical surface. The light-entering surface 3021 protrudes toward the LED chip 2. The highest point is the point where the light-entering surface 3021 and the plate body 301 are farthest apart in the direction of the optical axis Z of the LED chip 2. Its projection falls within the LED chip, and the projection direction is still the direction of the optical axis Z of the LED chip 2. When manufacturing the light source module, glue is first poured on the surface of the light source board 1. In this embodiment, self-leveling silica gel is poured, and then the integrated lens 3 is covered thereon. At this time, the glue above each LED chip 2 contacts the light-entering surface 3021 of the lens body 302, and the arc surface is pressed down, pushing the glue around and discharging the air. After the glue is cured, the light source, glue and lens are bonded together, and the glue is cured to form a waterproof isolation layer 6, forming a good waterproof effect. After curing, the light incident surface 3021 and the waterproof isolation layer 6 or the LED chip 2 are attached, and there is no air layer in between to improve the light effect.

[0027] When the area of ​​the light source board 1 is large, in order to better exhaust the air, the coverage area of ​​the integrated lens 3 can be limited, and multiple integrated lenses 3 can be used in combination. The light source module in this embodiment includes four integrated lenses 3. The integrated lenses 3 are arranged in an array, and gaps 308 are formed between the integrated lenses 3 as channels for exhausting air.

[0028] The light emitting surface 3022 of the lens body 302 protrudes from the plate body 301 in the direction away from the LED chip 2. The light emitting surface 3022, as the main optical surface of the lens, can be designed into any form according to the light distribution requirements of the light source module. In the present embodiment, the light emitting surface 3022 is an arc surface with different longitudinal and lateral light distribution angles. In other preferred embodiments, it can also be in the form of a Fresnel lens. This application does not limit this.

[0029] The light source module of this embodiment can be used in various lamps, and is particularly suitable for outdoor lamps such as street lamps, floodlights, and wall washers.

[0030] The above description of the preferred embodiments of the present application is for illustration and description, and is not intended to be exhaustive or limited to the specific form disclosed. Obviously, many modifications and changes may be made, which may be obvious to those skilled in the art and should be included in the scope of the present application defined by the attached claims.

Claims

1. An LED light source module, characterized in that It includes a light source board, a waterproof isolation layer, and an integrated lens, wherein the light source board is provided with an LED chip as a light source, the integrated lens includes a board body and a lens body arranged on the board body, the lens body includes a light incident surface and a light emitting surface arranged oppositely, the board body at least covers a portion of the surface of the side of the light source board where the LED chip is arranged, the lens body and the LED chip are arranged correspondingly, the light incident surface is an arc surface convex from the board body toward the LED chip, the light emitting surface is arranged on the side of the board body away from the LED chip, and the waterproof isolation layer is filled between the light source board and the integrated lens.

2. The LED light source module according to claim 1, characterized in that: The projection of the point at which the light incident surface and the plate body are farthest apart in the direction of the optical axis of the LED chip falls within the LED chip.

3. The LED light source module according to claim 2, characterized in that: The light incident surface is a spherical surface protruding from the plate body toward the LED chip.

4. The LED light source module according to claim 2, characterized in that: The integrated lens further comprises a clamping claw, and the light source board is provided with a buckle position matched with the clamping claw, and the integrated lens is buckledly connected to the light source board.

5. The LED light source module according to claim 2, characterized in that: The waterproof isolation layer is made of silica gel material, and is formed by filling self-leveling silica gel on the light source board and curing it.

6. The LED light source module according to claim 2, characterized in that: The light incident surface is bonded to the waterproof isolation layer or the LED chip.

7. The LED light source module according to claim 2, characterized in that: The LED light source module further includes a heat dissipation housing, the heat dissipation housing includes a groove, and the light source board is arranged at the bottom of the groove.

8. The LED light source module according to claim 2, characterized in that: The number of the LED chips is more than 2, the number of the lens bodies is equal to the number of the LED chips, the lens bodies and the LED chips are arranged in a one-to-one correspondence, and the plate body and each of the lens bodies are integrally formed.

9. The LED light source module according to claim 2, characterized in that: The LED light source module includes more than two integrated lenses, and a gap is formed between each of the integrated lenses.

10. A lamp, characterized in that: The lamp comprises the LED light source module as described in any one of claims 1 to 9, and the lamp is an outdoor lamp.

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