High-luminous-efficiency LED light source

Abstract

The invention relates to the technical field of LED light sources, and discloses a high-luminous-efficiency LED light source which comprises a substrate, the substrate is provided with a light-emitting area, the light-emitting area is provided with a light-emitting chip, and the light-emitting chip is provided with a top light-emitting face and a side light-emitting face. A side interval is arranged between every two adjacent side light-emitting faces, frustum columns are arranged on the side intervals, and column intervals are arranged between the frustum columns. The periphery of the frustum column is coated with a reflective glue layer; the light-emitting area is filled with a fluorescent glue layer, light emitted by the top light-emitting surface directly irradiates outwards through the fluorescent glue layer, and light emitted by the side light-emitting surface irradiates the reflective glue layers of the plurality of frustum columns, and then irradiates outwards through the fluorescent glue layer after being reflected by the reflective glue layers; according to the LED light source, the frustum columns are arranged in the side intervals, light emitted by the side light-emitting faces can be reflected in a large range, the column intervals are arranged between the frustum columns, multiple times of reflection of the light can be achieved between the column intervals, diversified reflection of the light is achieved, and the lighting effect of the LED light source is greatly improved.

Description

Technical Field

[0001] The invention patent relates to the technical field of LED light sources, specifically, to high-efficiency 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-light-efficiency 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 light-efficiency LED light source comprises a substrate, the substrate is provided with a light-emitting area, the light-emitting area is provided with a plurality of light-emitting chips arranged at intervals, the light-emitting chip is in a cubic shape, the top of the light-emitting chip has a top light-emitting surface, the periphery of the light-emitting chip has a plurality of side light-emitting surfaces, the bottom of the light-emitting chip has a bottom surface, and the bottom surface is fixed to the bottom of the light-emitting area;

[0007] There is a side interval between the side light-emitting surfaces of adjacent light-emitting chips, and the side interval is provided with a plurality of truncated cone columns arranged at intervals, and there is a column interval between adjacent truncated cone columns; the outer periphery of the truncated cone column is coated with a reflective adhesive layer, and the reflective adhesive layer is arranged around the circumference of the truncated cone column, and along the bottom-up direction of the truncated cone column, the reflective adhesive layer is arranged obliquely away from the side light-emitting surface;

[0008] The light-emitting area is filled with a fluorescent glue layer, which covers a plurality of light-emitting chips and a plurality of frustum columns. The light emitted from the top light-emitting surface is irradiated outward through the fluorescent glue layer, and the light emitted from the side light-emitting surface is reflected by the reflective glue layer and then irradiated outward through the fluorescent glue layer.

[0009] Furthermore, the top of the fluorescent glue layer has a top surface, and the top surface is arranged to be arched upward.

[0010] Furthermore, a flat disc-shaped disc surface is formed in the middle of the top surface.

[0011] Furthermore, the top of the substrate is recessed to form the light-emitting area, and the bottom surface of the light-emitting chip is fixedly docked at the bottom of the light-emitting area.

[0012] Furthermore, the periphery of the light-emitting area has a peripheral wall arranged around the periphery of the light-emitting area, and the peripheral wall is arranged around the periphery of the light-emitting area. There is a peripheral gap between the peripheral wall and the side light-emitting surface, and the peripheral gap is arranged around the periphery of the light-emitting area.

[0013] Furthermore, along the direction from bottom to top of the light-emitting area, the peripheral wall is arranged to be tilted outward away from the light-emitting area, and the light emitted by the side light-emitting surface is reflected by the peripheral wall and then irradiated outward through the fluorescent glue layer.

[0014] Furthermore, the frustum column is provided with a middle hole which passes through from top to bottom, the bottom of the frustum column is butted against the bottom of the light-emitting area, the bottom of the middle hole is in a closed arrangement, and the top of the middle hole forms a top opening;

[0015] The top of the reflective adhesive layer extends into the middle hole through the top opening to form an inner hole section, the lower part of the inner hole section fills the lower part of the middle hole, the upper part of the inner hole section fills the upper part of the middle hole, and surrounds to form a hollow section, the fluorescent adhesive layer fills the hollow section and is integrated with the reflective adhesive layer.

[0016] Furthermore, the reflective adhesive layer extends to the lower part of the column interval to form a reflective wall segment, the upper part of the column interval forms an upper area, and the fluorescent adhesive layer fills the upper area and is integrated with the reflective wall segment.

[0017] Furthermore, the two sides of the reflective wall segment have side walls facing the side light-emitting surface. From bottom to top along the side walls, the side walls are arranged obliquely away from the side light-emitting surface. The light emitted by the side light-emitting surface is reflected by the side walls and then irradiated outward through the fluorescent glue layer.

[0018] Furthermore, an outer dam is provided on the substrate, and the outer dam is arranged around the circumference of the light-emitting area. There is an annular area between the outer dam and the outer periphery of the light-emitting area, and the annular area is arranged around the circumference of the light-emitting area; the outer periphery of the fluorescent glue layer covers the annular area and is connected to the outer dam.

[0019] Compared with the prior art, the high-light-efficiency LED light source provided by the present invention has the light emitted by the top light-emitting surface of the light-emitting chip, which directly irradiates outward through the fluorescent adhesive layer, and the light emitted by the side light-emitting surface irradiates the reflective adhesive layer of the multiple frustum columns, and then irradiates outward through the fluorescent adhesive layer after being reflected by the reflective adhesive layer, thereby greatly improving the light efficiency of the LED light source;

[0020] Secondly, a plurality of frustum columns are provided in the side intervals, which can reflect the light emitted from the side light-emitting surface over a large range, and there are column intervals between the frustum columns, which can realize multiple reflections of the light between the column intervals, etc., thereby realizing diversified reflection of the light and greatly improving the light efficiency of the LED light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic cross-sectional view of a high light efficiency LED light source provided by the present invention;

[0022] Figure 2 It is a basic main view schematic diagram provided by the present invention;

[0023] Figure 3 It is a front view schematic diagram of the connection between the frustum column and the reflective wall section provided by the present invention;

[0024] Figure 4 It is a schematic cross-sectional view of the frustum column provided by the present invention. DETAILED DESCRIPTION

[0025] 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.

[0026] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0027] 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.

[0028] Reference Figure 1-4 The figure shows a preferred embodiment of the present invention.

[0029] A high-efficiency LED light source includes a substrate 100, the substrate 100 is provided with a light-emitting area 102, the light-emitting area 102 is provided with a plurality of light-emitting chips 300 arranged at intervals, the light-emitting chip 300 is in a cube shape, the top of the light-emitting chip 300 has a top light-emitting surface, the periphery of the light-emitting chip 300 has a plurality of side light-emitting surfaces, the bottom of the light-emitting chip 300 has a bottom surface, and the bottom surface is fixed to the bottom of the light-emitting area 102.

[0030] There is a side gap 103 between the side light-emitting surfaces of adjacent light-emitting chips 300, and the side gap 103 is provided with a plurality of spaced-apart frustum columns 400, and there is a column gap between adjacent frustum columns 400; the outer periphery of the frustum column 400 is coated with a reflective adhesive layer 401, and the reflective adhesive layer 401 is arranged around the circumference of the frustum column 400, and along the frustum column 400 from bottom to top, the reflective adhesive layer 401 is arranged obliquely away from the side light-emitting surface.

[0031] The light-emitting area 102 is filled with a fluorescent glue layer 200, which covers a plurality of light-emitting chips 300 and a plurality of frustum columns 400. The light emitted from the top light-emitting surface is radiated outward through the fluorescent glue layer 200, and the light emitted from the side light-emitting surface is reflected by the reflective glue layer 401 and then radiated outward through the fluorescent glue layer 200.

[0032] In the high-light-efficiency LED light source provided above, the light emitted from the top light-emitting surface of the light-emitting chip 300 directly irradiates outward through the fluorescent glue layer 200, and the light emitted from the side light-emitting surface irradiates the reflective glue layer 401 of the multiple frustum columns 400, and after being reflected by the reflective glue layer 401, it irradiates outward through the fluorescent glue layer 200, which greatly improves the light efficiency of the LED light source; secondly, multiple frustum columns 400 are arranged in the side interval 103, which can reflect the light emitted from the side light-emitting surface in a large range, and there are column intervals between the frustum columns 400, which can realize multiple reflections of the light between the column intervals, etc., thereby realizing diversified reflection of the light and greatly improving the light efficiency of the LED light source.

[0033] In this embodiment, the top of the fluorescent glue layer 200 has a top surface 202 , and the top surface 202 is arranged to be arched upward, so that the top surface 202 can focus the light irradiated outward.

[0034] In this embodiment, a flat disc-shaped disk surface 201 is formed in the middle of the top surface 202. By forming the disk surface 201 on the top surface 202, the focusing range can be limited to achieve a better focusing effect.

[0035] In this embodiment, the top of the substrate 100 is concave to form the above-mentioned light-emitting area 102, and the bottom surface of the light-emitting chip 300 is fixedly docked at the bottom of the light-emitting area 102. Alternatively, a dam may be provided on the substrate 100 to surround the above-mentioned light-emitting area 102.

[0036] In this embodiment, the periphery of the light-emitting area 102 has a peripheral wall 104 arranged around the periphery of the light-emitting area 102. The peripheral wall 104 is arranged around the periphery of the light-emitting area 102. There is a peripheral gap between the peripheral wall 104 and the side light-emitting surface, and the peripheral gap is arranged around the periphery of the light-emitting area 102.

[0037] In this way, after a part of the light emitted from the side light emitting surface irradiates the outer peripheral wall 104 , it can be reflected by the outer peripheral wall 104 and then irradiate outward through the fluorescent glue layer 200 .

[0038] In this embodiment, the peripheral wall 104 is arranged to be tilted outward from the light-emitting area 102 from bottom to top, and the light emitted from the side light-emitting surface is reflected by the peripheral wall 104 and then radiates outward through the fluorescent glue layer 200.

[0039] Arranging the outer peripheral wall 104 at an angle can realize reflection of light by the outer peripheral wall 104 , thereby improving the reflection performance of the LED light source and improving the light efficiency of the LED light source.

[0040] In this embodiment, a middle hole is provided in the frustum column 400, which passes through from top to bottom. The bottom of the frustum column 400 is butted against the bottom of the light-emitting area 102. The bottom of the middle hole is closed, and the top of the middle hole forms a top opening.

[0041] The top of the reflective adhesive layer 401 extends into the middle hole through the top opening to form an inner hole section 403. The lower part of the inner hole section 403 fills the lower part of the middle hole, and the upper part of the inner hole section 403 fills the upper part of the middle hole and surrounds to form a hollow section 402. The fluorescent adhesive layer 200 fills the hollow section 402 and is integrated with the reflective adhesive layer 401.

[0042] In this way, by forming the middle hole, and extending the reflective adhesive layer 401 into the middle hole, forming the inner hole section 403, the reflective adhesive layer 401 is integrated with the frustum column 400, and the fluorescent adhesive layer 200 extends into the hollow section 402 of the inner hole section 403, and is integrated with the reflective adhesive layer 401. Secondly, by forming the inner hole section 403 in the middle hole and embedding the fluorescent adhesive layer 200 in the middle hole, a part of the light irradiated into the middle hole can achieve a diversified reflection effect.

[0043] In this embodiment, the reflective adhesive layer 401 extends to the lower part of the column interval to form a reflective wall segment 404. The upper part of the column interval forms an upper area. The fluorescent adhesive layer 200 fills the upper area and is integrated with the reflective wall segment 404. In this way, the reflective wall segment 404 can reflect the light emitted by the side light emitting surface.

[0044] In this embodiment, both sides of the reflective wall segment 404 have side walls facing the side light-emitting surface. Along the direction from bottom to top toward the side walls, the side walls are arranged obliquely away from the side light-emitting surface. The light emitted by the side light-emitting surface is reflected by the side walls and then radiates outward through the fluorescent glue layer 200.

[0045] It is arranged in an inclined shape toward the side wall, so that the light irradiated toward the side wall can be reflected, thereby improving the reflection performance.

[0046] In this embodiment, an outer dam 101 is provided on the substrate 100, and the outer dam 101 is arranged around the circumference of the light-emitting area 102. There is an annular area between the outer dam 101 and the outer periphery of the light-emitting area 102, and the annular area is arranged around the circumference of the light-emitting area 102; the outer periphery of the fluorescent glue layer 200 covers the annular area and is connected to the outer dam 101.

[0047] In this way, the outer dam 101 can limit the outer periphery of the fluorescent glue layer 200, so that the fluorescent glue layer 200 can be arched to a set height, so as to achieve the effect of focusing light by the fluorescent glue layer 200.

[0048] 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. High light efficiency LED light source, characterized in that: The substrate comprises a light-emitting area, the light-emitting area is provided with a plurality of light-emitting chips arranged at intervals, the light-emitting chip is in a cube shape, the top of the light-emitting chip has a top light-emitting surface, the periphery of the light-emitting chip has a plurality of side light-emitting surfaces, the bottom of the light-emitting chip has a bottom surface, and the bottom surface is fixed to the bottom of the light-emitting area; There is a side interval between the side light-emitting surfaces of adjacent light-emitting chips, and the side interval is provided with a plurality of truncated cone columns arranged at intervals, and there is a column interval between adjacent truncated cone columns; the outer periphery of the truncated cone column is coated with a reflective adhesive layer, and the reflective adhesive layer is arranged around the circumference of the truncated cone column, and along the bottom-up direction of the truncated cone column, the reflective adhesive layer is arranged obliquely away from the side light-emitting surface; The light-emitting area is filled with a fluorescent glue layer, which covers a plurality of light-emitting chips and a plurality of frustum columns. The light emitted from the top light-emitting surface is irradiated outward through the fluorescent glue layer, and the light emitted from the side light-emitting surface is reflected by the reflective glue layer and then irradiated outward through the fluorescent glue layer.

2. The high light efficiency LED light source according to claim 1, characterized in that: The top of the fluorescent glue layer has a top surface, and the top surface is arched upward.

3. The high light efficiency LED light source according to claim 2, characterized in that: The middle part of the top surface forms a flat disc-shaped disc surface.

4. The high light efficiency LED light source according to any one of claims 1 to 3, characterized in that: The top of the substrate is concave to form the light-emitting area, and the bottom surface of the light-emitting chip is fixedly connected to the bottom of the light-emitting area.

5. The high light efficiency LED light source according to claim 4, characterized in that: The periphery of the light emitting area has a peripheral wall arranged around the periphery of the light emitting area. The peripheral wall is arranged around the periphery of the light emitting area. There is a peripheral gap between the peripheral wall and the side light emitting surface. The peripheral gap is arranged around the periphery of the light emitting area.

6. The high light efficiency LED light source according to claim 5, characterized in that: Along the direction from bottom to top of the light-emitting area, the peripheral wall is arranged outwardly away from the light-emitting area, and the light emitted by the side light-emitting surface is reflected by the peripheral wall and then irradiated outward through the fluorescent glue layer.

7. The high light efficiency LED light source according to any one of claims 1 to 3, characterized in that: The frustum column is provided with a middle hole which passes through from top to bottom, the bottom of the frustum column is butted against the bottom of the light-emitting area, the bottom of the middle hole is in a closed arrangement, and the top of the middle hole forms a top opening; The top of the reflective adhesive layer extends into the middle hole through the top opening to form an inner hole section, the lower part of the inner hole section fills the lower part of the middle hole, the upper part of the inner hole section fills the upper part of the middle hole, and surrounds to form a hollow section, the fluorescent adhesive layer fills the hollow section and is integrated with the reflective adhesive layer.

8. The high light efficiency LED light source according to any one of claims 1 to 3, characterized in that: The reflective adhesive layer extends to the lower part of the column interval to form a reflective wall segment, the upper part of the column interval forms an upper area, and the fluorescent adhesive layer fills the upper area and is integrated with the reflective wall segment.

9. The high light efficiency LED light source according to claim 8, characterized in that: The two sides of the reflective wall segment have facing side walls facing the side luminous surface. From bottom to top along the facing side walls, the facing side walls are arranged obliquely away from the side luminous surface. The light emitted by the side luminous surface is reflected by the facing side walls and then irradiated outward through the fluorescent glue layer.

10. The high light efficiency LED light source according to any one of claims 1 to 3, characterized in that: The substrate is provided with an outer dam, which is arranged around the circumference of the light-emitting area. There is an annular area between the outer dam and the outer periphery of the light-emitting area, and the annular area is arranged around the circumference of the light-emitting area. The outer periphery of the fluorescent glue layer covers the annular area and is connected to the outer dam.

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