LED light source with high luminous efficiency
By setting the surrounding wall reflecting light between the side light-emitting surface of the LED chip and the light-transmitting adhesive layer, the problems of low light efficiency and high temperature of the LED light source are solved, and a high light efficiency and long-life LED light source is achieved.
Patent Information
- Application Number
- CN202422155989.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The light efficiency of existing LED light sources is low and the temperature is high, resulting in a shorter life.
An enclosing wall is provided between the side light emitting surface of the LED chip and the light-transmitting adhesive layer, and the light ray emitted from the side light emitting surface is reflected through the enclosing wall, causing it to deviate from the light emitting region and emit outward, so as to avoid direct emission from each other.
It improves the light efficiency of the LED light source, reduces the temperature, and thus extends the life of the LED light source.
Smart Images
Figure CN223049897U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of LED light sources, and more specifically, to a high luminous efficacy LED light source. Background Art
[0002] LED light sources have the advantages of small size, long lifespan, high efficiency, etc., and are widely used in various daily lighting environments, and have also become the mainstream in the lighting field.
[0003] An LED light source includes a bracket. A plurality of LED chips are provided on the light emitting area of the bracket. The top of the LED chip has a top light emitting surface, and the outer periphery of the LED chip has a side light emitting surface. A fluorescent glue layer is covered on the light emitting area. In this way, the light emitted from the top light emitting surface of the LED chip passes through the fluorescent glue layer and then irradiates outward.
[0004] In the prior art, the light emitted from the side light emitting surface of the LED chip is emitted horizontally and cannot deviate from the light emitting area and irradiate outward, resulting in the inability of the LED light source to achieve a high luminous efficacy effect. Moreover, the light emitted from the side light emitting surface directly irradiates the adjacent LED chips, causing the temperature of the LED light source to easily rise, which greatly affects the lifespan of the LED light source. Summary of the Utility Model
[0005] The purpose of the present utility model is to provide a high luminous efficacy LED light source, aiming to solve the problem of low luminous efficacy of the LED light source in the prior art.
[0006] The present utility model is implemented as follows. The high luminous efficacy LED light source includes a bracket. A light emitting area is provided on the bracket. A plurality of spaced LED chips are provided on the light emitting area. The bottom of the LED chip is butted against the light emitting area. The top of the LED chip has a top light emitting surface, and the periphery of the LED chip has a plurality of side light emitting surfaces;
[0007] The light emitting area is covered with a light transmissive glue layer. A plurality of spaced empty areas are formed in the light transmissive glue layer. The plurality of LED chips are respectively placed in the plurality of empty areas; the inner side wall of the empty area has an enclosing wall that reflects the light emitted from the side light emitting surface away from the light emitting area and irradiates outward. The enclosing wall is arranged facing the side light emitting surface and forms an annular interval with the side light emitting surface.
[0008] Further, the top of the light transmissive glue layer is arranged flush with the top light emitting surface.
[0009] Further, the annular interval is arranged in a closed loop along the outer periphery of the LED chip.
[0010] Further, along the direction away from the light emitting area and irradiating outward, the enclosing wall is inclined away from the side light emitting surface.
[0011] Further, the outer periphery of the annular space is arranged in a circular shape.
[0012] Further, the enclosing wall is inclined outwardly away from the side light-emitting surface, forming an inclined stepped surface that is inclined upward and reflects the light emitted from the side light-emitting surface away from the light-emitting area and outward. The inclined stepped surface is arranged in a circumferential direction along the enclosing wall.
[0013] Further, a plurality of the inclined stepped surfaces are formed on the enclosing wall, and the plurality of inclined stepped surfaces are arranged at intervals in the height direction of the enclosing wall.
[0014] Further, a fluorescent glue layer is covered on the light-transmitting glue layer. The fluorescent glue layer covers the top light-emitting surface and the top of the light-transmitting glue layer, and the fluorescent glue layer fills the annular space.
[0015] Further, the top of the bracket is recessed downward to form a recessed area, and the bottom of the recessed area forms the light-emitting area.
[0016] Further, the top of the fluorescent glue layer protrudes above the recessed area to form a arched portion, and the surface of the arched portion is in an arc shape.
[0017] Compared with the prior art, for the high luminous efficacy LED light source provided by the present utility model, since an annular space is formed between the enclosing wall of the light-transmitting glue layer and the side light-emitting surface, the light emitted from the side light-emitting surface, after being reflected by the enclosing wall, is emitted outwardly away from the light-emitting area. In this way, the luminous efficacy of the LED light source can be greatly improved. Secondly, the light emitted from the side light-emitting surface is reflected outwardly by the enclosing wall, avoiding direct irradiation between each other, thereby reducing the temperature of the LED light source and increasing the service life of the LED light source. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a front view schematic diagram of the high luminous efficacy LED light source provided by the present utility model;
[0019] Figure 2 is a three-dimensional schematic diagram of the LED chip provided by the present utility model;
[0020] Figure 3 is a partial internal schematic diagram of the high luminous efficacy LED light source provided by the present utility model;
[0021] Figure 4 is a front view schematic diagram of the enclosing wall provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0023] The implementation of the present utility model will be described in detail below in combination with specific embodiments.
[0024] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0025] Refer to Figures 1-4 As shown, it is a preferred embodiment provided by the present utility model.
[0026] The model of the high luminous efficiency LED light source provided in this embodiment can be 5050MAX.
[0027] The high luminous efficiency LED light source includes a bracket. A light emitting area is provided on the bracket. A plurality of LED chips 100 arranged at intervals are provided on the light emitting area. The bottom of the LED chip 100 is butted against the light emitting area. The top of the LED chip 100 has a top light emitting surface 101, and a plurality of side light emitting surfaces 102 are provided on the periphery of the LED chip 100.
[0028] Both the top light emitting surface 101 and the side light emitting surfaces 102 can emit light. Generally, the LED chip 100 has one top light emitting surface 101 and four side light emitting surfaces 102.
[0029] The light emitting area is covered with a light transmissive glue layer 300. A plurality of vacant areas arranged at intervals are formed in the light transmissive glue layer 300. A plurality of LED chips 100 are respectively placed in a plurality of vacant areas; the inner side wall of the vacant area has an enclosing wall 301 that reflects the light emitted from the side light emitting surface 102 away from the light emitting area and outwards. The enclosing wall 301 is arranged towards the side light emitting surface 102 and forms an annular interval with the side light emitting surface 102.
[0030] The high-light-efficiency LED light source provided above has an annular gap formed between the enclosing wall 301 of the translucent adhesive layer 300 and the side light-emitting surface 102. The light emitted by the side light-emitting surface 102 is reflected by the enclosing wall 301 and then emitted outwardly away from the light-emitting area. In this way, the light efficiency of the LED light source can be greatly improved. Secondly, the light emitted by the side light-emitting surface 102 is reflected outward by the enclosing wall 301 to avoid direct radiation between each other, thereby reducing the temperature of the LED light source and increasing the life of the LED light source.
[0031] The top of the light-transmitting adhesive layer 300 is arranged flush with the top light-emitting surface 101, so that the enclosing wall 301 can enclose the outer periphery of the entire side light-emitting surface 102 and be arranged at the same height as the side light-emitting surface 102, so that all the light emitted by the entire side light-emitting surface 102 can be reflected outward away from the light-emitting area.
[0032] In this embodiment, the annular spacer is arranged in a closed loop along the outer periphery of the LED chip 100, so that the enclosing wall 301 is also arranged around the outer periphery of the entire LED chip 100, so that the light emitted by multiple side light-emitting surfaces 102 can be reflected by the enclosing wall 301 and deviate from the light-emitting area and reflect outward.
[0033] Along the direction away from the light-emitting area, the enclosure wall 301 is tilted away from the side light-emitting surface 102, so that the light irradiated on the enclosure wall 301 can be directly deviated from the light-emitting area and reflected outward, and the reflection angle of the light can be adjusted by changing the inclination, etc.
[0034] In this embodiment, the outer periphery of the annular spacer is arranged in a circular shape, which is convenient for arranging the vacant area and for the enclosure wall 301 to surround the outer periphery of the entire LED chip 100 .
[0035] In this embodiment, the enclosing wall 301 is tilted outward away from the side light-emitting surface 102 to form an inclined step surface 302 that tilts upward and reflects the light emitted by the side light-emitting surface 102 away from the light-emitting area and outward. The inclined step surface 302 is arranged around the circumference of the enclosing wall 301.
[0036] In this way, an inclined step surface 302 is formed on the enclosure wall 301, so that the enclosure wall 301 forms a shape with multiple steps of inclined transition, thereby realizing multi-angle reflection of the light irradiated on the enclosure wall 301, greatly improving the light efficiency of the LED light source.
[0037] In this embodiment, a plurality of inclined step surfaces 302 are formed on the enclosing wall 301, and the plurality of inclined step surfaces 302 are arranged at intervals along the height direction of the enclosing wall 301. In this way, a plurality of inclined step surfaces 302 are formed on the enclosing wall 301, so that the enclosing wall 301 can reflect light at multiple angles.
[0038] In this embodiment, a fluorescent glue layer 200 is covered on the light-transmitting glue layer 300. The fluorescent glue layer 200 covers the top light-emitting surface 101 and the top of the light-transmitting glue layer 300, and the fluorescent glue layer 200 fills the annular space. In this way, the light emitted from the top light-emitting surface 101 irradiates outward after passing through the fluorescent glue layer 200, and the light emitted from the side light-emitting surface 102 irradiates outward after passing through the fluorescent glue layer 200 and then being reflected by the enclosing wall 301 and deviating from the light-emitting area.
[0039] The top of the bracket is recessed downward to form a recessed area, and the bottom of the recessed area forms a light-emitting area. In this way, it is convenient for the arrangement of multiple LED chips 100, and it is also convenient for the arrangement of the light-transmitting glue layer 300 and the fluorescent glue layer 200.
[0040] In this embodiment, the top of the fluorescent glue layer 200 protrudes and is exposed above the recessed area to form a arched portion, and the surface of the arched portion is arc-shaped. In this way, the light efficiency of the LED light source can be improved, and the arched portion can play a certain protective role for the LED light source.
[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. High light efficiency LED light source, characterized by: The bracket comprises a light-emitting area, the light-emitting area is provided with a plurality of LED chips arranged at intervals, the bottom of the LED chip is butted against the light-emitting area, the top of the LED chip has a top light-emitting surface, and the peripheral side of the LED chip has a plurality of side light-emitting surfaces; The light-emitting area is covered with a light-transmitting adhesive layer, in which a plurality of vacant areas arranged at intervals are formed, and a plurality of LED chips are respectively placed in the plurality of vacant areas; the inner side walls of the vacant areas have an enclosure wall that deviates the light emitted from the side light-emitting surface away from the light-emitting area and reflects outward, and the enclosure wall is arranged toward the side light-emitting surface and forms a ring-shaped interval with the side light-emitting surface.
2. The high light efficiency LED light source according to claim 1, characterized in that: The top of the light-transmitting adhesive layer is arranged flush with the top light-emitting surface.
3. The high light efficiency LED light source according to claim 1, characterized in that: The annular spacers are arranged in a closed loop along the outer circumference of the LED chip.
4. The high light efficiency LED light source according to claim 1, characterized in that: Along the direction deviating from the light-emitting area toward the outside, the enclosing wall is arranged obliquely away from the side light-emitting surface.
5. The high light efficiency LED light source according to claim 1, characterized in that: The outer circumference of the annular spacer is arranged in a circular shape.
6. The high light efficiency LED light source according to any one of claims 1 to 5, characterized in that: The enclosing wall is inclined outwardly away from the side luminous surface, forming an inclined step surface that is inclined upward and reflects the light emitted by the side luminous surface away from the luminous area and outwardly, and the inclined step surface is arranged around the circumference of the enclosing wall.
7. The high light efficiency LED light source according to claim 6, characterized in that: A plurality of the inclined step surfaces are formed on the enclosing wall, and the plurality of the inclined step surfaces are arranged at intervals along the height direction of the enclosing wall.
8. The high light efficiency LED light source according to any one of claims 1 to 5, characterized in that: The light-transmitting adhesive layer is covered with a fluorescent adhesive layer, the fluorescent adhesive layer covers the top light-emitting surface and the top of the light-transmitting adhesive layer, and the fluorescent adhesive layer fills the annular space.
9. The high light efficiency LED light source according to any one of claims 1 to 5, characterized in that: The top of the support is concave downward to form a concave area, and the bottom of the concave area forms the light-emitting area.
10. The high light efficiency LED light source according to claim 8, characterized in that: The top of the fluorescent glue layer protrudes above the concave area to form a raised portion, and the surface of the raised portion is in an arc shape.