High-condensation LED light source

Abstract

The invention relates to the technical field of LED light sources, and discloses a high-condensation LED light source which comprises a substrate, a box dam is arranged at the top of the substrate, a light-emitting area is defined by the box dam, and a plurality of light-emitting chips are arranged in the light-emitting area; a top ring groove is formed in the top of the box dam, an inner ring section is arranged on the inner side of the top of the box dam, an outer ring section is arranged on the outer side of the top of the box dam, the outer ring section is provided with a lower section and an upper section, and the top ring groove is defined by the inner ring section and the lower section; the light-emitting area is filled with a light-transmitting glue layer, the light-transmitting glue layer is covered with a fluorescent glue layer, the periphery of the fluorescent glue layer is filled with a top annular groove, the top of the fluorescent glue layer is provided with a fluorescent top face, and the fluorescent top face is upwards arched. The fluorescent top surface is arranged upwards in an arched manner, and light emitted by the fluorescent top surface has a high condensation effect; and secondly, the periphery of the fluorescent glue layer is limited by the upper part section, so that the fluorescent glue layer is ensured to have enough high arching height, and a better light condensation effect is realized.

Description

Technical Field

[0001] The invention patent relates to the technical field of LED light sources, specifically, to high-concentration 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, for specific application scenarios, such as stadiums or stages, it is necessary to have a focusing requirement for the light emitted by an LED light source. However, current LED light sources are often difficult to achieve the focusing requirement, and the radiation divergence is high, which cannot meet the high focusing requirement. Summary of the invention

[0005] The purpose of the present invention is to provide a high-concentration LED light source, aiming to solve the problem in the prior art that LED light sources are difficult to highly concentrate.

[0006] The present invention is implemented as follows: a high-concentration LED light source comprises a substrate, a dam arranged in an annular manner is provided on the top of the substrate, the dam encloses a light-emitting area, and a plurality of light-emitting chips are provided in the light-emitting area; the top of the dam is concave downward to form a top annular groove arranged in an annular manner, and the top annular groove is arranged around the circumference of the dam;

[0007] The inner side of the top of the dam has an inner ring segment arranged in an annular manner, and the outer side of the top of the dam has an outer ring segment arranged in an annular manner, and the height of the outer ring segment is greater than that of the inner ring segment; the lower part of the outer ring segment has a lower segment, and the upper part of the outer ring segment has an upper segment, and the inner ring segment and the lower segment are enclosed to form the top annular groove;

[0008] The light-emitting area is filled with a translucent adhesive layer, which covers a plurality of light-emitting chips, and the outer periphery of the translucent adhesive layer is connected to the inner ring segment; the translucent adhesive layer is covered with a fluorescent adhesive layer, which covers the translucent adhesive layer, and the outer periphery of the fluorescent adhesive layer is filled with a top ring groove and connected to the upper segment; the top of the fluorescent adhesive layer has a fluorescent top surface, and the fluorescent top surface is upwardly arched.

[0009] Furthermore, the middle portion of the fluorescent top surface is flat, forming a disc-shaped disc plane.

[0010] Furthermore, a plurality of frustum columns made of light-transmitting material and arranged at intervals are protruding from the plane of the disk, and the diameter of the frustum columns gradually decreases along the height direction of the frustum columns, and the tops of the frustum columns form light-transmitting portions, and the peripheries of the frustum columns are coated with light-shielding material that reflects light, forming a periphery formed by the light-shielding material.

[0011] Furthermore, a limiting ring arranged in an annular manner is provided on the disc plane, and the limiting ring is arranged around the circumference of the disc plane. A plurality of the frustum columns are arranged in the enclosed area of ​​the limiting ring, and the height of the limiting ring is higher than the height of the frustum columns.

[0012] Furthermore, the fluorescent top surface has an outer peripheral annular surface surrounding the outer circumference of the disk plane, and along the direction from bottom to top of the fluorescent top surface, the outer peripheral annular surface is arranged to be inwardly contracted and tilted.

[0013] Furthermore, the outer periphery of the light-transmitting adhesive layer is butted against the inner ring segment.

[0014] Furthermore, the outer periphery of the light-transmitting adhesive layer is butted against the middle of the inner ring segment, a height gap is provided between the outer periphery of the light-transmitting adhesive layer and the top of the inner ring segment, and the outer periphery of the fluorescent adhesive layer fills the height gap.

[0015] Furthermore, the top of the light-transmitting adhesive layer has a light-transmitting top surface, the middle of the light-transmitting top surface is recessed downward to form a middle recessed area, and the fluorescent adhesive layer fills the recessed area.

[0016] Furthermore, along the direction from bottom to top of the recessed area, the inner side wall of the recessed area is arranged to be inclined outward away from the recessed area.

[0017] Furthermore, the recessed area is in a cone shape.

[0018] Compared with the prior art, the high-concentration LED light source provided by the present invention has a light source emitted by the light-emitting chip that passes through the light-transmitting adhesive layer and then the fluorescent adhesive layer before irradiating outward to achieve the required irradiation requirements; the fluorescent top surface is arranged to be arched upward, and the light emitted through the fluorescent top surface has a high-concentration effect;

[0019] Secondly, the upper section is formed above the top annular groove and butted against the outer periphery of the fluorescent glue layer, which can limit the outer periphery of the fluorescent glue layer to ensure that the fluorescent glue layer has a sufficiently high arch height to achieve a better focusing effect;

[0020] In addition, the outer periphery of the fluorescent glue layer is embedded in the top annular groove, which can further limit and fix the outer periphery of the fluorescent glue layer to achieve a higher arch of the fluorescent glue layer. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a cross-sectional schematic diagram of the arrangement of the substrate and the light-transmitting adhesive layer provided by the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the restriction ring provided by the present invention. DETAILED DESCRIPTION

[0024] 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.

[0025] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0026] 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.

[0027] Reference Figure 1-3 The figure shows a preferred embodiment of the present invention.

[0028] A high-concentration LED light source includes a substrate 100. A ring-shaped dam 200 is provided on the top of the substrate 100. The dam 200 encloses a light-emitting area. A plurality of light-emitting chips 101 are provided in the light-emitting area. The top of the dam 200 is concave downward to form a ring-shaped top annular groove 203. The top annular groove 203 is arranged around the circumference of the dam 200.

[0029] The inner side of the top of the dam 200 has an inner ring section 201 arranged in an annular manner, and the outer side of the top of the dam 200 has an outer ring section arranged in an annular manner, and the height of the outer ring section is greater than that of the inner ring section 201; the lower part of the outer ring section has a lower section 202, and the upper part of the outer ring section has an upper section 204, and the inner ring section 201 and the lower section 202 are enclosed to form the above-mentioned top annular groove 203;

[0030] The light-emitting area is filled with a light-transmitting adhesive layer 400, which covers a plurality of light-emitting chips 101, and the outer periphery of the light-transmitting adhesive layer 400 is connected to the inner ring segment 201; the light-transmitting adhesive layer 400 is covered with a fluorescent adhesive layer 300, which covers the light-transmitting adhesive layer 400, and the outer periphery of the fluorescent adhesive layer 300 is filled with a top ring groove 203 and connected to the upper segment 204; the top of the fluorescent adhesive layer 300 has a fluorescent top surface 301, and the fluorescent top surface 301 is arched upward.

[0031] In the high-concentration LED light source provided above, the light emitted by the light-emitting chip 101 passes through the transparent glue layer 400, then passes through the fluorescent glue layer 300, and then irradiates outward to achieve the required illumination requirements; the fluorescent top surface 301 is arranged to be arched upward, and the light emitted through the fluorescent top surface 301 has a high focusing effect; secondly, the upper section 204 is formed above the top ring groove 203 and docked with the outer periphery of the fluorescent glue layer 300, which can limit the outer periphery of the fluorescent glue layer 300 to ensure that the fluorescent glue layer 300 has a sufficiently high arch height to achieve a better focusing effect; in addition, the outer periphery of the fluorescent glue layer 300 is embedded in the top ring groove 203, and the outer periphery of the fluorescent glue layer 300 can be further limited and fixed to achieve a higher arch of the fluorescent glue layer 300.

[0032] In this embodiment, the middle portion of the fluorescent top surface 301 is flat, forming a disk-shaped disk plane 302 . Thus, the size of the focusing range can be adjusted according to the size range of the disk plane 302 .

[0033] In this embodiment, a plurality of frustum columns 501 made of light-transmitting material and arranged at intervals are protruding from the disk plane 302. The diameter of the frustum columns 501 gradually decreases along the height direction of the frustum columns 501, and a light-transmitting portion is formed at the top of the frustum columns 501. The outer periphery of the frustum columns 501 is coated with a light-shielding material that reflects light, forming an outer periphery formed by the light-shielding material.

[0034] In this way, when the light passes through the fluorescent glue layer 300, it can be transmitted through the gaps between the frustum columns 501, partially enter the frustum columns 501, and be transmitted outward from the light-transmitting portion of the frustum columns 501. In addition, in the process of passing through the frustum columns 501, it plays a role of re-focusing the light, and performs multiple internal reflections through the outer periphery, thereby avoiding excessive divergence of the light when irradiated outward, and limiting the light to a set focusing range.

[0035] In this embodiment, a limiting ring 500 is arranged in an annular manner on the disc plane 302. The limiting ring 500 is arranged around the circumference of the disc plane 302. A plurality of frustum columns 501 are arranged in the enclosed area of ​​the limiting ring 500. The height of the limiting ring 500 is higher than the height of the frustum columns 501.

[0036] In this way, the limiting ring 500 can be arranged to block light on the periphery of the disk plane 302, which can further focus the light. According to actual needs, the size of the limiting ring 500 can be set accordingly to match the size of the disk plane 302.

[0037] In this embodiment, the fluorescent top surface 301 has an outer peripheral annular surface surrounding the outer circumference of the disk plane 302, and along the direction from bottom to top of the fluorescent top surface 301, the outer peripheral annular surface is arranged to be inwardly contracted and tilted, so that a better focusing effect can be achieved on the light.

[0038] The outer periphery of the light-transmitting adhesive layer 400 is butted against the inner ring segment 201 , so that it is convenient to inject the light-transmitting adhesive layer 400 , and the inner ring segment 201 is used to limit the outer periphery of the light-transmitting adhesive layer 400 .

[0039] In this embodiment, the outer periphery of the light-transmitting adhesive layer 400 is butted against the middle of the inner ring segment 201, and there is a height gap between the outer periphery of the light-transmitting adhesive layer 400 and the top of the inner ring segment 201, and the outer periphery of the fluorescent adhesive layer 300 fills the height gap. In this way, after the fluorescent adhesive layer 300 is injected, the outer periphery of the fluorescent adhesive layer 300 also butts against the inner ring segment 201 and fills the height gap, so that the fluorescent adhesive layer 300 and the light-transmitting adhesive layer 400 are combined into a more stable overall structure.

[0040] In this embodiment, the top of the light-transmitting adhesive layer 400 has a light-transmitting top surface, the middle of the light-transmitting top surface is recessed downward to form a middle recessed area 401, and the fluorescent adhesive layer 300 fills the recessed area. In this way, the fluorescent adhesive layer 300 and the light-transmitting adhesive layer 400 can be better integrated into one, and the fit between the two is more stable.

[0041] Along the direction from bottom to top of the recessed area, the inner side wall of the recessed area is arranged to deviate from the recessed area and tilt outward. In this way, the inner side wall of the recessed area can be used to reflect the light internally multiple times to improve the reflection of the light and increase the outward irradiation rate of the light, thereby greatly improving the light efficiency of the LED light source.

[0042] In this embodiment, the recessed area is in a cone shape, or, according to actual needs, the recessed area can also be set in other shapes.

[0043] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. High-concentration LED light source, characterized in that: The device comprises a substrate, a dam arranged in an annular manner is provided on the top of the substrate, the dam encloses a light-emitting area, and a plurality of light-emitting chips are provided in the light-emitting area; the top of the dam is concave downward to form a top annular groove arranged in an annular manner, and the top annular groove is arranged around the circumference of the dam; The inner side of the top of the dam has an inner ring segment arranged in an annular manner, and the outer side of the top of the dam has an outer ring segment arranged in an annular manner, and the height of the outer ring segment is greater than that of the inner ring segment; the lower part of the outer ring segment has a lower segment, and the upper part of the outer ring segment has an upper segment, and the inner ring segment and the lower segment are enclosed to form the top annular groove; The light-emitting area is filled with a translucent adhesive layer, which covers a plurality of light-emitting chips, and the outer periphery of the translucent adhesive layer is connected to the inner ring segment; the translucent adhesive layer is covered with a fluorescent adhesive layer, which covers the translucent adhesive layer, and the outer periphery of the fluorescent adhesive layer is filled with a top ring groove and connected to the upper segment; the top of the fluorescent adhesive layer has a fluorescent top surface, and the fluorescent top surface is upwardly arched.

2. The high-concentration LED light source according to claim 1, characterized in that: The middle part of the fluorescent top surface is flat, forming a disc-shaped disc plane.

3. The high-concentration LED light source according to claim 2, characterized in that: A plurality of frustum columns made of light-transmitting material and arranged at intervals are protruding from the plane of the disk. The diameter of the frustum columns gradually decreases along the height direction of the frustum columns. The top of the frustum columns forms a light-transmitting portion. The outer periphery of the frustum columns is coated with a light-shielding material that reflects light, forming an outer periphery formed by the light-shielding material.

4. The high-concentration LED light source according to claim 3, characterized in that: A limiting ring arranged in an annular shape is provided on the disc plane. The limiting ring is arranged around the circumference of the disc plane. A plurality of frustum columns are arranged in the enclosed area of ​​the limiting ring, and the height of the limiting ring is higher than the height of the frustum columns.

5. The high-concentration LED light source according to claim 2, characterized in that: The fluorescent top surface has an outer peripheral annular surface surrounding the outer circumference of the disk plane. Along the direction from bottom to top of the fluorescent top surface, the outer peripheral annular surface is tilted and gathered inwards.

6. The high-concentration LED light source according to any one of claims 1 to 5, characterized in that: The outer periphery of the light-transmitting adhesive layer is butted against the inner ring segment.

7. The high-concentration LED light source according to claim 6, characterized in that: The outer periphery of the light-transmitting adhesive layer is butted against the middle of the inner ring segment, a height interval is provided between the outer periphery of the light-transmitting adhesive layer and the top of the inner ring segment, and the outer periphery of the fluorescent adhesive layer fills the height interval.

8. The high-concentration LED light source according to any one of claims 1 to 5, characterized in that: The top of the light-transmitting adhesive layer has a light-transmitting top surface, the middle of the light-transmitting top surface is concave downward to form a middle concave area, and the fluorescent adhesive layer fills the concave area.

9. The high-concentration LED light source according to claim 8, characterized in that: Along the direction from bottom to top of the recessed area, the inner side wall of the recessed area is arranged to be inclined outward away from the recessed area.

10. The high-concentration LED light source according to claim 8, characterized in that: The depressed area is in a cone shape.

Images