High-reflection LED light source

Abstract

The invention relates to the technical field of LED light sources, and discloses a high-reflection LED light source which comprises a substrate, the top of the substrate is provided with an inner box dam arranged in a surrounding mode, the inner box dam forms a light-emitting area in a surrounding mode, the top of the substrate is provided with an outer box dam arranged in a surrounding mode, the outer box dam is arranged in a surrounding mode along the inner box dam, and an annular surrounding area is arranged between the inner box dam and the outer box dam; the enclosure area is filled with a reflecting material layer for reflecting light, a plurality of light-emitting chips are arranged in the light-emitting area, the light-emitting area is filled with a fluorescent glue layer, the fluorescent glue layer covers the plurality of light-emitting chips, the fluorescent glue layer extends to the enclosure area and covers the reflecting material layer, and the fluorescent glue layer seals and covers the light-emitting area and the enclosure area from top to bottom; part of light emitted by the light-emitting chip is reflected or directly irradiated on the reflecting material layer, reflected by the reflecting material layer and the like, then penetrates through the fluorescent glue layer outwards and is irradiated outwards, the reflecting effect of the LED light source is improved, and the lighting effect of the LED light source is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of LED light sources, and more specifically, to high-reflection LED light sources. Background Art

[0002] LED light sources have the advantages of small size, long life and high efficiency. They can be used continuously for up to 100,000 hours and have become the mainstream in the lighting field.

[0003] The LED light source includes a substrate, which is provided with a light-emitting area. A plurality of light-emitting chips are arranged on the light-emitting area. A fluorescent glue layer is covered on the light-emitting area. The light emitted by the light-emitting chip passes through the fluorescent glue layer and irradiates outward. The light is excited by the fluorescent powder in the fluorescent glue layer, so that the light irradiated outward meets the set requirements.

[0004] In the prior art, the light-emitting chip is in the shape of a cube, the top of the light-emitting chip has a top light-emitting surface, and the periphery of the light-emitting chip has multiple side light-emitting surfaces. The light emitted by the top light-emitting surface is irradiated outward through the fluorescent glue layer, but the light emitted by the side light-emitting surface is horizontally straight and cannot be reflected and irradiated outward through the fluorescent glue layer. The reflection effect of the LED light source is poor, resulting in the defect of low light efficiency of the LED light source. Summary of the invention

[0005] The purpose of the present invention is to provide a high-reflection LED light source, aiming to solve the problem of low light efficiency of LED light sources in the prior art.

[0006] The present invention is implemented as follows: a high-reflection LED light source comprises a substrate, a top of the substrate is provided with an inner dam arranged around, the inner dam encloses a light-emitting area, the top of the substrate has an outer dam arranged around, the outer dam is arranged around the inner dam, and an annular enclosed area is formed between the inner dam and the outer dam;

[0007] The enclosed area is filled with a reflective material layer that reflects light, a plurality of light-emitting chips are provided in the light-emitting area, the light-emitting area is filled with a fluorescent glue layer, the fluorescent glue layer covers the plurality of light-emitting chips, the fluorescent glue layer extends to the enclosed area and covers the reflective material layer, and the fluorescent glue layer covers the light-emitting area and the enclosed area from top to bottom.

[0008] Furthermore, the height of the outer dam is higher than the height of the inner dam, and the outer periphery of the fluorescent glue layer is butted against the top of the outer dam.

[0009] Furthermore, the inner side of the reflective material layer has an inner ring, which is arranged around the circumference of the inner dam, docked with the outer side wall of the inner dam, and extends to the top of the inner dam, covering the top of the inner dam.

[0010] Furthermore, the outer side of the reflective material layer has an outer ring, which is arranged around the circumference of the outer dam; the outer ring is docked on the inner wall of the outer dam, the top of the outer ring is lower than the top of the outer dam, and there is a top gap between the top of the outer ring and the top of the outer dam.

[0011] Furthermore, along the extension direction from the inner ring to the outer ring, the reflective material layer is arranged to be inclined upward.

[0012] Furthermore, the outer periphery of the fluorescent glue layer is butted against the outer ring and fills the top space.

[0013] Furthermore, the top of the reflective material layer has an annular surface, and the annular surface is arranged around the circumference of the reflective material layer; the annular surface is raised to form a plurality of annularly arranged protrusions, and the plurality of protrusions are arranged around the circumference of the annular surface, and annular grooves are arranged around adjacent protrusions; the fluorescent glue layer fills the annular grooves and covers the plurality of protrusions.

[0014] Furthermore, the protrusion has an inner side wall which is arranged in a ring shape and faces the light emitting area. The inner side wall is arranged around the circumference of the protrusion. From the bottom to the top of the protrusion, the inner side wall is arranged obliquely away from the light emitting area.

[0015] Furthermore, the protruding portion is provided with a plurality of notches, the plurality of notches are arranged around the circumference of the protruding portion at intervals, adjacent annular grooves are connected via the notches, and the notches of adjacent protruding portions are arranged in a staggered manner.

[0016] Furthermore, the reflective material layer is formed by filling titanium dioxide glue mixed with titanium dioxide.

[0017] Compared with the prior art, the high-reflection LED light source provided by the present invention, the light emitted by the light-emitting chip is partially reflected or directly irradiated on the reflective material layer, and then passes through the fluorescent glue layer outward and irradiates outward, thereby greatly improving the reflection effect of the LED light source, achieving the high reflection performance of LED lighting irradiation, and greatly improving the light efficiency of the LED light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic cross-sectional view of a high-reflection LED light source provided by the present invention;

[0019] Figure 2 It is a front view schematic diagram of the substrate provided by the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] Reference Figure 1-2 The figure shows a preferred embodiment of the present invention.

[0024] A highly reflective LED light source includes a substrate 100. The top of the substrate 100 is provided with an inner dam 200 arranged in a surrounding manner. The inner dam 200 encloses a light-emitting area 102. The top of the substrate 100 has an outer dam 201 arranged in a surrounding manner. The outer dam 201 is arranged along the inner dam 200. There is an annular enclosure area 103 between the inner dam 200 and the outer dam 201. In this way, the enclosure area 103 is enclosed on the periphery of the light-emitting area 102.

[0025] The enclosed area 103 is filled with a reflective material layer 300 for reflecting light, a plurality of light-emitting chips 101 are provided in the light-emitting area 102, and the light-emitting area 102 is filled with a fluorescent glue layer 400. The fluorescent glue layer 400 covers the plurality of light-emitting chips 101, and the fluorescent glue layer 400 extends to the enclosed area 103 and covers the reflective material layer 300. The fluorescent glue layer 400 covers the light-emitting area 102 and the enclosed area 103 from top to bottom.

[0026] In the high-reflection LED light source provided above, part of the light emitted by the light-emitting chip 101 is reflected or directly irradiated on the reflective material layer 300, and then passes through the fluorescent glue layer 400 to the outside and irradiates outward, thereby greatly improving the reflection effect of the LED light source, achieving the high reflection performance of LED lighting irradiation, and greatly improving the light efficiency of the LED light source.

[0027] In this embodiment, the top of the light-emitting chip 101 has a top light-emitting surface, the periphery of the light-emitting chip 101 has a side light-emitting surface, and the bottom of the light-emitting chip 101 has a bottom light-emitting surface. Generally, the bottom light-emitting surface is fixed on the light-emitting area 102, and the top light-emitting surface can directly irradiate outward through the fluorescent glue layer 400, and the side light-emitting surface can irradiate outward through the fluorescent glue layer 400, or part of the light emitted by the side light-emitting surface can be reflected by the reflective material layer 300, and then irradiate outward through the fluorescent glue layer 400.

[0028] The height of the outer dam 201 is higher than that of the inner dam 200 , and the outer periphery of the fluorescent glue layer 400 is butted against the top of the outer dam 201 , so that the fluorescent glue layer 400 can cover the reflective material layer 300 .

[0029] In this embodiment, the inner side of the reflective material layer 300 has an inner ring, which is arranged around the circumference of the inner dam 200, butted against the outer side wall of the inner dam 200, and extends to the top of the inner dam 200, covering the top of the inner dam 200. In this way, the reflective material layer 300 can be integrated with the inner dam 200 and extend to the top of the inner dam 200, so as to realize reflection of light and the like.

[0030] In this embodiment, the outer side of the reflective material layer 300 has an outer ring, which is arranged around the circumference of the outer dam 201; the outer ring is butted against the inner side wall of the outer dam 201, the top of the outer ring is lower than the top of the outer dam 201, and there is a top gap between the top of the outer ring and the top of the outer dam 201. In this way, the existence of the top gap allows the fluorescent glue layer 400 to cover the reflective material layer 300.

[0031] In this embodiment, along the extension direction from the inner ring to the outer ring, the reflective material layer 300 is arranged to be tilted upwards, so that the range of light irradiated on the reflective material layer 300 can be increased, and reflection of light can be achieved.

[0032] In this embodiment, the outer periphery of the fluorescent glue layer 400 is butted against the outer ring and the top space is filled, so that the fluorescent glue layer 400 and the reflective material layer 300 are combined into an integral structure.

[0033] In this embodiment, the top of the reflective material layer 300 has an annular surface, which is arranged around the circumference of the reflective material layer 300; the annular surface is raised to form a plurality of annularly arranged protrusions 301, and the plurality of protrusions 301 are arranged around the circumference of the annular surface, and annular grooves are arranged around adjacent protrusions 301; the fluorescent glue layer 400 fills the annular grooves and covers the plurality of protrusions 301.

[0034] By forming a plurality of annular protrusions 301 and annular grooves, the fluorescent glue layer 400 and the reflective material layer 300 can be more firmly integrated into one.

[0035] In this embodiment, the protrusion 301 has an inner side wall 202 arranged in a ring shape facing the light-emitting area 102. The inner side wall 202 is arranged around the circumference of the protrusion 301, and is arranged inclined away from the light-emitting area 102 along the direction from bottom to top of the protrusion 301.

[0036] In this way, by forming the inclined inner side wall 202, further reflection of light can be achieved, thereby greatly improving the reflection performance of the LED light source and greatly improving the light efficiency of the LED light source.

[0037] In this embodiment, the protrusion 301 is provided with a plurality of notches, which are arranged around the circumference of the protrusion 301 at intervals, and adjacent annular grooves are connected through the notches, and the notches of adjacent protrusions 301 are arranged in a staggered manner. By forming the notches, adjacent annular grooves can be connected, so that the reflective material layer 300 of the fluorescent glue layer 400 is filled densely and fully, and combined into a more stable whole.

[0038] In this embodiment, the reflective material layer 300 is formed by filling titanium dioxide paste mixed with titanium dioxide. The reflective material layer 300 is mixed with titanium dioxide, and the titanium dioxide can be used to efficiently reflect light.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Highly reflective LED light source, characterized in that: The device comprises a substrate, wherein the top of the substrate is provided with an inner dam arranged around the substrate, the inner dam encloses a light-emitting area, the top of the substrate is provided with an outer dam arranged around the inner dam, the outer dam is arranged around the inner dam, and an annular enclosed area is provided between the inner dam and the outer dam; The enclosed area is filled with a reflective material layer that reflects light, a plurality of light-emitting chips are provided in the light-emitting area, the light-emitting area is filled with a fluorescent glue layer, the fluorescent glue layer covers the plurality of light-emitting chips, the fluorescent glue layer extends to the enclosed area and covers the reflective material layer, and the fluorescent glue layer covers the light-emitting area and the enclosed area from top to bottom.

2. The high-reflection LED light source according to claim 1, characterized in that: The height of the outer dam is higher than that of the inner dam, and the outer periphery of the fluorescent glue layer is butted against the top of the outer dam.

3. The high-reflection LED light source as claimed in claim 2, characterized in that: The inner side of the reflective material layer has an inner ring, which is arranged around the circumference of the inner dam, docked with the outer side wall of the inner dam, and extends to the top of the inner dam, covering the top of the inner dam.

4. The high-reflection LED light source as claimed in claim 3, characterized in that: The outer side of the reflective material layer has an outer ring, which is arranged around the circumference of the outer dam; the outer ring is docked with the inner wall of the outer dam, the top of the outer ring is lower than the top of the outer dam, and there is a top gap between the top of the outer ring and the top of the outer dam.

5. The high-reflection LED light source as claimed in claim 4, characterized in that: Along the extending direction from the inner ring to the outer ring, the reflective material layer is arranged tilted upward.

6. The high-reflection LED light source as claimed in claim 5, characterized in that: The outer periphery of the fluorescent glue layer is butted against the outer ring and fills the top space.

7. The high-reflection LED light source according to any one of claims 1 to 6, characterized in that: The top of the reflective material layer has an annular surface, which is arranged around the circumference of the reflective material layer; the annular surface is raised to form a plurality of annularly arranged protrusions, which are arranged around the circumference of the annular surface, and annular grooves are arranged around adjacent protrusions; the fluorescent glue layer fills the annular grooves and covers the plurality of protrusions.

8. The high-reflection LED light source according to claim 7, characterized in that: The protrusion has an inner side wall facing the light emitting area and arranged in an annular manner. The inner side wall is arranged around the circumference of the protrusion. From the bottom to the top of the protrusion, the inner side wall is arranged obliquely away from the light emitting area.

9. The high-reflection LED light source according to claim 7, characterized in that: The protruding portion is provided with a plurality of notches, which are arranged around the circumference of the protruding portion at intervals, adjacent annular grooves are connected through the notches, and the notches of adjacent protruding portions are arranged in a staggered manner.

10. The high-reflection LED light source according to any one of claims 1 to 6, characterized in that: The reflective material layer is formed by filling titanium dioxide glue mixed with titanium dioxide.

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