COB packaging light source

Abstract

The utility model relates to the technical field of packaging of COB light sources, and discloses a COB packaging light source which comprises a metal substrate, an LED chip is arranged on the upper surface of the metal substrate, a base is fixedly installed on the lower surface of the metal substrate, the size and the shape of the base are matched with those of the metal substrate, a round hole is formed in the middle of the upper surface of the metal substrate, and the LED chip is arranged in the round hole. A round hole is formed in the upper surface of the base, a round groove is formed in the position, corresponding to the round hole, of the upper surface of the base, the round groove is matched with the round hole, a rectangular plate is fixedly installed at the upper end of the inner wall of the round groove, a clamping device is arranged in the round hole, the LED chip and the metal substrate are fixed, and through the arrangement of the clamping device, the LED chip can be stably fixed to the metal substrate for a longer time; according to the COB light source, the stability between the LED chip and the metal base is improved, the service life of the COB light source is prolonged, the COB light source is more convenient to package, the packaging convenience of the COB light source is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of COB light source packaging, in particular to a COB packaged light source. Background Art

[0002] COB light source is a high-power integrated surface light source, a high-efficiency integrated surface light source technology that directly attaches LED chips to a high-reflectivity mirror metal substrate. This technology eliminates the concept of a bracket and has no electroplating, no reflow soldering, and no patch process. Therefore, the number of processes is reduced by nearly one-third, and the cost is also saved by one-third. The light output area and size of the light source can be designed according to the product's appearance and structure. Currently, COB light sources are widely used in the lighting field, such as indoor lighting, flashlights and other electronic products.

[0003] Currently, when encapsulating LED chips and metal substrates, thermally conductive epoxy resin is used to directly bond the LED chips and metal substrates. However, this connection method is very likely to cause an unstable connection between the LED chip and the substrate after a long period of use, causing the LED chip to fall off, thereby affecting the use of the COB light source and reducing the service life of the COB light source. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a COB packaged light source, which has the advantages of being able to stably fix the LED chip on the metal base for a longer period of time, thereby increasing the stability between the LED chip and the metal base, and prolonging the service life of the COB light source. It is also more convenient to package the COB light source, increasing the convenience of packaging it, and improving work efficiency. It solves the problem that after a long period of use, the connection between the LED chip and the substrate is very likely to be unstable, causing the LED chip to fall off, thereby affecting the use of the COB light source and reducing the service life of the COB light source.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a COB packaged light source, comprising a metal substrate, an LED chip is arranged on the upper surface of the metal substrate, a base is fixedly mounted on the lower surface of the metal substrate, and the base is adapted to the metal substrate;

[0008] A circular hole is provided in the middle of the upper surface of the metal substrate, a circular groove is provided on the upper surface of the base at a position corresponding to the circular hole, and the circular groove is adapted to the circular hole, and a rectangular plate is fixedly installed on the upper end of the inner wall of the circular groove;

[0009] Wherein, a clamping device is arranged inside the circular hole, and the clamping device is used to fix the LED chip and the metal substrate.

[0010] Preferably, the clamping device comprises a cylinder, which is arranged inside the circular hole and is adapted to the circular hole;

[0011] The upper end of the cylinder is fixedly connected to the lower surface of the LED chip, the lower end of the cylinder extends to the inside of the circular groove, a rectangular groove is opened at the bottom end of the cylinder, and the left and right ends of the rectangular groove both penetrate the outer surface of the cylinder, and the rectangular groove is adapted to the rectangular plate;

[0012] Wherein, first sliding grooves are provided at the middle positions of the front and rear side surfaces of the rectangular groove, and second sliding grooves are provided on the opposite inner walls of the two sliding grooves.

[0013] Preferably, a sliding block is disposed inside each of the two second sliding grooves, and the sliding block is slidably connected to the inner wall of the second sliding groove;

[0014] Wherein, the corresponding surfaces of the two sliding blocks are fixedly connected with trapezoidal clamping joints, and the two trapezoidal clamping joints are respectively slidably connected to the inner walls of the two first sliding grooves and extend to the inside of the rectangular groove.

[0015] Preferably, the upper ends of the two second sliding grooves are provided with U-shaped clamping grooves, and a gear is rotatably installed in the middle of the transverse groove of the U-shaped clamping groove;

[0016] Wherein, a tooth plate is slidably mounted on the left inner wall of the U-shaped clamping groove transverse groove;

[0017] Among them, the same tooth plate is slidably installed on the right inner wall of the U-shaped clamping groove transverse groove, and the two tooth plates are arranged to rotate 180° with the gear as the center, and the two tooth plates are meshed and connected with the gear;

[0018] Preferably, sliding plates are slidably arranged inside the vertical grooves at both ends of the U-shaped clamping groove, the two sliding plates are arranged correspondingly, and the corresponding surfaces of the two sliding plates are respectively fixedly connected to the opposite ends of the two tooth plates;

[0019] The lower ends of the two sliding plates extend into the interior of the two second sliding grooves and are fixedly connected to the two sliding blocks.

[0020] Preferably, three springs are fixedly installed on the front inner wall of the vertical groove at the front end of the U-shaped clamping groove, and the three springs are arranged correspondingly up and down;

[0021] The other ends of the three springs are fixedly connected to the sliding plate in the vertical groove at the front end of the U-shaped clamping groove.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the utility model provides a COB packaged light source, which has the following beneficial effects:

[0024] 1. The COB packaged light source can stably fix the LED chip on the metal base for a longer period of time through the setting of the clamping device, thereby increasing the stability between the LED chip and the metal base and prolonging the service life of the COB light source.

[0025] 2. The COB packaged light source is more convenient to package the COB light source through the setting of the clamping device, which increases the convenience of packaging and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the top view structure of a COB packaged light source of the utility model;

[0027] Figure 2 This is a bottom view structural diagram of the LED chip and the clamping device of the utility model;

[0028] Figure 3 This is a schematic diagram of the top view structure of the metal base of the utility model;

[0029] Figure 4 This is a schematic diagram of the top view of the base structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the front view cutaway structure of the clamping device of the utility model;

[0031] Figure 6 It is a schematic diagram of a top view of a cross-sectional structure of the clamping device of the utility model.

[0032] In the figure: 1. metal substrate; 2. LED chip; 3. base; 4. round hole; 5. round groove; 6. rectangular plate; 7. cylinder; 8. rectangular groove; 9. first sliding groove; 10. second sliding groove; 11. U-shaped snap-in groove; 12. sliding block; 13. trapezoidal snap-in joint; 14. gear; 15. tooth plate; 16. sliding plate; 17. spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-6The utility model provides a new technical solution: a COB packaged light source, including a metal substrate 1, the metal substrate 1 is a prior art, which will not be described in detail here, an LED chip 2 is arranged on the upper surface of the metal substrate 1, the LED chip 2 is a prior art, which will not be described in detail here, a base 3 is fixedly installed on the lower surface of the metal substrate 1, and the base 3 is adapted to the metal substrate 1;

[0035] A circular hole 4 is provided in the middle of the upper surface of the metal substrate 1, a circular groove 5 is provided on the upper surface of the base 3 at a position corresponding to the circular hole 4, and the circular groove 5 is adapted to the circular hole 4, and a rectangular plate 6 is fixedly installed on the upper end of the inner wall of the circular groove 5;

[0036] A clamping device is provided inside the circular hole 4 , and the clamping device is used to fix the LED chip 2 and the metal substrate 1 .

[0037] Furthermore, the clamping device includes a cylinder 7, which is arranged inside the circular hole 4 and is adapted to the circular hole 4;

[0038] The upper end of the cylinder 7 is fixedly connected to the lower surface of the LED chip 2, and the lower end of the cylinder 7 extends to the inside of the circular groove 5. A rectangular groove 8 is formed at the bottom of the cylinder 7, and both left and right ends of the rectangular groove 8 penetrate the outer surface of the cylinder 7, and the rectangular groove 8 is adapted to the rectangular plate 6.

[0039] A first sliding groove 9 is provided at the middle position of the front and rear side surfaces of the rectangular groove 8 , and a second sliding groove 10 is provided on the inner walls of the two sliding grooves 9 which are opposite to each other.

[0040] Furthermore, a sliding block 12 is disposed inside each of the two second sliding grooves 10, and the sliding block 12 is slidably connected to the inner wall of the second sliding groove 10;

[0041] The corresponding surfaces of the two sliding blocks 12 are fixedly connected with trapezoidal clamping joints 13 , and the two trapezoidal clamping joints 13 are respectively slidably connected to the inner walls of the two first sliding grooves 9 and extend to the inside of the rectangular groove 8 .

[0042] Furthermore, a U-shaped clamping groove 11 is formed at the upper ends of the two second sliding grooves 10, and a gear 14 is rotatably mounted in the middle of the transverse groove of the U-shaped clamping groove 11;

[0043] Among them, a tooth plate 15 is slidably mounted on the left inner wall of the transverse groove of the U-shaped clamping groove 10;

[0044] The same tooth plate 15 is slidably mounted on the right inner wall of the transverse groove of the U-shaped clamping groove 10 , and the two tooth plates 15 are arranged to rotate 180° with the gear 14 as the center, and the two tooth plates 15 are meshed and connected with the gear 14 .

[0045] Furthermore, when in use, first place the base 3 on a horizontal plane, then place the metal substrate 1 on the base 3, align the circular hole 4 with the circular groove 5, then align the cylinder 7 on the LED chip 2 with the circular hole 4 and the circular groove 5, and align the rectangular groove 8 with the rectangular plate 6 and then push it downward. When the two trapezoidal clamping joints 13 contact the rectangular plate 6, the two trapezoidal clamping joints 13 are squeezed by the rectangular plate 6 and move toward the inside of the two first sliding grooves 9 at the front and rear, respectively. The two trapezoidal clamping joints 13 drive the two sliding plates 16 to move synchronously at the front and rear sides. The three springs 17 are squeezed and compressed by the sliding plate 16 at the front end. The two sliding plates 16 move forward and backward, driving the two tooth plates 14 to move synchronously. The gear 14 rotates under the action of the two tooth plates 15, and then continues to move downward. Through the setting of the clamping device, it is more convenient to use this method to package the COB light source, which increases the convenience of packaging it and improves work efficiency.

[0046] Furthermore, sliding plates 16 are slidably disposed inside the vertical grooves at both ends of the U-shaped clamping groove 11, and the two sliding plates 16 are disposed correspondingly, and the corresponding surfaces of the two sliding plates 16 are respectively fixedly connected to the opposite ends of the two tooth plates 15;

[0047] The lower ends of the two sliding plates 16 extend into the interior of the two second sliding grooves 10 and are fixedly connected to the two sliding blocks 12 .

[0048] Furthermore, three springs 17 are fixedly installed on the front inner wall of the vertical groove at the front end of the U-shaped clamping groove 11, and the three springs 17 are arranged correspondingly up and down;

[0049] The other ends of the three springs 17 are fixedly connected to the sliding plate 16 in the vertical groove at the front end of the U-shaped clamping groove 11 .

[0050] Furthermore, when the two trapezoidal clamping joints 13 completely pass through the rectangular plate 6, the two trapezoidal clamping joints 13 are no longer squeezed, and the front sliding plate 16 no longer squeezes the three springs 17. The three springs 17 push the front sliding plate 16 back, and the front sliding plate 16 moves to its original position, driving the right tooth plate 15 and the front trapezoidal clamping joint 13 to move to their original positions. The front trapezoidal clamping joint 13 returns to its original position, causing the right tooth plate 15 to drive the gear 14 to rotate, thereby driving the left tooth plate 15 to move to its original position, and the left tooth plate 15 to move to its original position. The movement drives the sliding plate 16 at the rear end to move to the original position, so that the trapezoidal clamping joint 13 at the rear end returns to the original position, thereby making the two trapezoidal clamping joints 13 return to the original position to clamp the rectangular plate 6, and fix the cylinder 7 and the LED chip fixedly connected to its upper end on the metal substrate 1, and then use the wire welding method to directly establish an electrical connection between the LED chip and the substrate. Through the setting of the clamping device, the LED chip can be stably fixed on the metal base 1 for a longer time, thereby increasing the stability between the LED chip 2 and the metal base 1 and improving the service life of the COB light source.

[0051] Working principle: when in use, first place the base 3 on a horizontal plane, then place the metal substrate 1 on the base 3, align the circular hole 4 with the circular groove 5, then align the cylinder 7 on the LED chip 2 with the circular hole 4 and the circular groove 5, and align the rectangular groove 8 with the rectangular plate 6 and then push it downward. When the two trapezoidal card joints 13 contact the rectangular plate 6, the two trapezoidal card joints 13 are squeezed by the rectangular plate 6 and move to the inside of the two first sliding grooves 9 respectively. The two trapezoidal card joints 13 drive the two sliding plates 16 to move synchronously to the front and rear sides. The three springs 17 are squeezed and compressed by the sliding plate 16 at the front end. The two sliding plates 16 move forward and backward to drive the two tooth plates 14 to move synchronously. The gear 14 rotates under the action of the two tooth plates 15, and then continues to move downward. Through the setting of the clamping device, it is more convenient to use this method to package the COB light source, which increases the convenience of packaging and improves the work efficiency. When the two trapezoidal card joints 13 have completely passed through the rectangular plate 6, the two trapezoidal card joints 13 are no longer squeezed, and the sliding plate at the front end 16 no longer squeezes the three springs 17, and the three springs 17 push the sliding plate 16 at the front end back, and the sliding plate 16 at the front end moves to the original position, driving the toothed plate 15 on the right and the trapezoidal clamping joint 13 at the front end to move to the original position, and the trapezoidal clamping joint 13 at the front end returns to the original position, so that the toothed plate 15 on the right drives the gear 14 to rotate, thereby driving the toothed plate 15 on the left to move to the original position, and the toothed plate 15 on the left moves to the original position, driving the sliding plate 16 at the rear end to move to the original position, so that the trapezoidal clamping joint 13 at the rear end returns to the original position, so that the two trapezoidal clamping joints 13 return to the original position to clamp the rectangular plate 6, and fix the cylinder 7 and the LED chip fixedly connected to its upper end on the metal substrate 1, and then use the wire welding method to directly establish an electrical connection between the LED chip and the substrate, and through the setting of the clamping device, the LED chip can be stably fixed on the metal base 1 for a longer time, thereby increasing the stability between the LED chip 2 and the metal base 1, and improving the service life of the COB light source.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A COB packaged light source, comprising a metal substrate (1), wherein an LED chip (2) is arranged on the upper surface of the metal substrate (1), characterized in that: A base (3) is fixedly mounted on the lower surface of the metal substrate (1), and the base (3) is compatible with the metal substrate (1); A circular hole (4) is provided in the middle of the upper surface of the metal substrate (1), a circular groove (5) is provided on the upper surface of the base (3) at a position corresponding to the circular hole (4), and the circular groove (5) is adapted to the circular hole (4), and a rectangular plate (6) is fixedly mounted on the upper end of the inner wall of the circular groove (5); A clamping device is provided inside the circular hole (4), and the clamping device is used to fix the LED chip (2) and the metal substrate (1).

2. A COB packaged light source according to claim 1, characterized in that: The clamping device comprises a cylinder (7), which is arranged inside the circular hole (4) and is adapted to fit the circular hole (4); The upper end of the cylinder (7) is fixedly connected to the lower surface of the LED chip (2), the lower end of the cylinder (7) extends to the inside of the circular groove (5), the bottom end of the cylinder (7) is provided with a rectangular groove (8), and the left and right ends of the rectangular groove (8) both penetrate the outer surface of the cylinder (7), and the rectangular groove (8) is adapted to the rectangular plate (6); Wherein, first sliding grooves (9) are provided at the middle positions of the front and rear side surfaces of the rectangular groove (8), and second sliding grooves (10) are provided on the inner walls of the two sliding grooves (9) which are away from each other.

3. A COB packaged light source according to claim 2, characterized in that: A sliding block (12) is disposed inside each of the two second sliding grooves (10), and the sliding block (12) is slidably connected to the inner wall of the second sliding groove (10); The corresponding surfaces of the two sliding blocks (12) are fixedly connected with a trapezoidal clamping joint (13), and the two trapezoidal clamping joints (13) are respectively slidably connected to the inner walls of the two first sliding grooves (9) and extend to the inside of the rectangular groove (8).

4. A COB packaged light source according to claim 2, characterized in that: The upper ends of the two second sliding grooves (10) are provided with U-shaped clamping grooves (11), and a gear (14) is rotatably mounted in the middle of the transverse groove of the U-shaped clamping groove (11); Wherein, a tooth plate (15) is slidably mounted on the left inner wall of the transverse groove of the U-shaped clamping groove; The same tooth plate (15) is slidably mounted on the right inner wall of the U-shaped clamping groove transverse groove, and the two tooth plates (15) are arranged to rotate 180 degrees with the gear (14) as the center of the circle, and the two tooth plates (15) are meshed and connected with the gear (14).

5. A COB packaged light source according to claim 4, characterized in that: Sliding plates (16) are slidably arranged inside the vertical grooves at both ends of the U-shaped clamping groove (11), the two sliding plates (16) are arranged correspondingly, and the corresponding surfaces of the two sliding plates (16) are respectively fixedly connected to the opposite ends of the two tooth plates (15); The lower ends of the two sliding plates (16) extend into the interior of the two second sliding grooves (10) and are fixedly connected to the two sliding blocks (12).

6. A COB packaged light source according to claim 5, characterized in that: Three springs (17) are fixedly mounted on the front inner wall of the vertical groove at the front end of the U-shaped clamping groove (11), and the three springs (17) are arranged correspondingly up and down; The other ends of the three springs (17) are fixedly connected to the sliding plate (16) in the vertical groove at the front end of the U-shaped clamping groove (11).

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