A packaging structure of LED lamp beads

Abstract

The present invention discloses a packaging structure of an LED lamp bead, belonging to the technical field of semiconductor packaging parts. The packaging structure of the LED lamp bead includes multiple groups of light-emitting parts, wherein the light-emitting parts include positive and negative electrodes, and the light-emitting parts also include a light-emitting chip welded to the end face of the positive electrode, and a gold wire welded between the light-emitting chip and the negative electrode. The present invention provides a middle frame and pins, so that all positive and negative electrodes are in contact with the end face of the middle frame for heat conduction, and can directly penetrate into the position of the light-emitting chip to guide and dissipate the heat inside the light-emitting part. The pins can transfer the heat of the light-emitting part to the power supply frame for power supply, and use the thermal conductivity of the metal power supply frame to conduct heat dissipation in a larger range, thereby ensuring the stability of the working temperature inside the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of semiconductor packaging, and in particular relates to a packaging structure of an LED lamp bead. Background Art

[0002] LED lamp beads are semiconductor packages that can emit light when powered on. Depending on the field of use, they can be used for lighting, physical therapy and other scenarios. In particular, 5050 red light therapy lamp beads and infrared therapy bulbs have broad application prospects and practical significance. They are an important device widely used in the fields of health management and beauty.

[0003] Existing red light therapy lamp beads can generate red light and far infrared light, and achieve a therapeutic effect by irradiating the affected area with a light beam. However, since red light and far infrared light carry relatively large amounts of energy, if they are fully reflected in an LED package, they will generate relatively large amounts of heat. In order to meet the demand for miniaturization, the packaging structure of LED lamp beads mostly adopts a pinless design, and the heat of the lamp beads can only be dissipated through a plastic packaging shell. However, plastic has poor thermal conductivity, which leads to poor heat dissipation efficiency, resulting in heat accumulation inside the lamp beads, which can easily cause overheating, false connection or short circuit at the welding position, and affect the service life of the lamp beads. In view of this, the present invention provides a packaging structure for LED lamp beads. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a packaging structure of an LED lamp bead.

[0005] The technical solution adopted to solve the above technical problems is:

[0006] A packaging structure of an LED lamp bead, comprising a plurality of light-emitting parts, wherein the light-emitting parts comprise a positive electrode sheet and a negative electrode sheet, the light-emitting parts further comprise a light-emitting chip welded to the end surface of the positive electrode sheet, and a gold wire welded between the light-emitting chip and the negative electrode sheet, and further comprise:

[0007] A lamp holder for encapsulating and protecting the light-emitting part, the lamp holder comprising a plug shell, a middle frame is installed through the middle of the plug shell, and all the positive and negative electrode sheets are in contact with the end surface of the middle frame for heat conduction;

[0008] Pins fixedly arranged at one end of the positive electrode sheet and the negative electrode sheet away from the light-emitting chip, the pins comprising a power connection portion extending to the outside of the lamp holder;

[0009] A lamp holder sleeved and mounted on the outer side of one end of the lamp holder setting pin;

[0010] A power supply rack built into the lamp holder for supplying power to the pins;

[0011] The end seal wrapped around the outside of the light-emitting part includes a main body installed at the port position of the plug shell, a corrugated sheet is arranged at one end of the main body located outside the plug shell, and a cavity is arranged between the corrugated sheet and the light-emitting part.

[0012] During packaging, the positive and negative electrodes with pins are fixed in the plug shell of the lamp holder, the plug shell is inserted into the lamp holder, the ends of the pins are pressed and contacted with the power supply frame to supply power to multiple light-emitting chips at the same time, and the end seals seal the light-emitting part and adopts a transparent material; during use, the power supply frame supplies power to the pins through an external power supply, and the pins make the light-emitting chips emit red light and far-infrared light, forming a light strip for light therapy, the middle frame absorbs and disperses the heat at the positive and negative electrodes, and transfers it to the plug shell for heat dissipation to prevent overheating inside the light-emitting part, the corrugated surface of the corrugated sheet forms multiple curved surfaces, so that the light is refracted and diverged, and when the device is installed on the lamp holder as a whole, it ensures that the light is evenly irradiated in a larger range, the corrugated sheet adopts a flexible colloid material, and when used in contact with the skin, the corrugated sheet can be deformed to adapt to the body contour with the cavity to ensure fit and prevent it from falling off easily, and the cavity can be filled with liquid heat-conducting medium, which will be heated and heated by the fully reflected light during operation, and can provide a hot compress for the skin to which it is attached.

[0013] Furthermore, the power connection part is located at one end of the outer side of the lamp holder to form a continuous overlapping part, and a protruding plate is provided at one end of the middle frame away from the light-emitting part. The power supply frame is correspondingly embedded on the inner wall of the lamp holder opposite to the protruding plate, and the overlapping part is in pressure contact with the protruding plate and the power supply frame, and the overlapping part forms an arc part between the protruding plate and the power supply frame.

[0014] Through the above technical solution, after the pin absorbs heat, it will transfer the heat to the end of the middle frame away from the light-emitting part through the arc part and the overlapping part. In this way, the light-emitting part has two heat transfer paths, the middle frame and the pin, and the heat dissipation efficiency is higher. The heat can be transferred to the power supply frame and the lamp holder to dissipate heat over a larger range.

[0015] Furthermore, the power supply rack includes an intermediate piece, a contact piece is provided at the corresponding overlapping portion of the intermediate piece, and a receiving groove for installing the contact piece is opened on the inner wall of the lamp holder. One end of the contact piece is fixedly connected to the intermediate piece, and the middle part of the contact piece protrudes toward the raised plate. The arc portion extends to the connection between the contact piece and the intermediate piece, and the end of the contact piece that is not fixedly connected to the intermediate piece is embedded in the receiving groove.

[0016] Through the above technical scheme, the arc portion forms an elastic gap between the overlapping portion and the power connection portion. The detachable connection can replace the lamp holder separately and use the light-emitting portion with different light intensities. After being plugged into the lamp holder, the middle part of the contact piece itself protrudes toward the power connection portion. The arc portion is located at the connection between the contact piece and the middle piece. The overlapping portion is squeezed and deformed between the contact piece and the raised plate, which can be stably clamped to avoid falling off during use.

[0017] Furthermore, the arc portion is provided with an installation notch on one side of the inner edge, and a metal lining is embedded in the installation notch. The metal lining and the arc portion are tightly fixed and the overlap portion is deformed away from the power supply frame due to heat.

[0018] Through the above technical scheme, the metal lining has a smaller deformation amplitude than the arc part when heated due to the difference in material. When the operating temperature of the light-emitting part exceeds the deformation threshold, the overlapping part deforms in the direction away from the power supply frame, thereby disconnecting the power of the corresponding light-emitting part, and performing a temporary power-off and cooling. When the heat transferred from the light-emitting part to the arc part and the overlapping part gradually dissipates, the overlapping part is reset to continue to supply power to the light-emitting part. Multiple groups of light-emitting parts work in coordination, and a short-term power-off and cooling of a light-emitting part does not affect the normal operation of the entire device.

[0019] Furthermore, the end seal includes a sealing block wrapped around the outside of the light-emitting part, and a main body directly contacting the side wall of the sealing block, the main body is provided with a fillet near the inner wall of the plug shell, the plug shell is provided with a fillet groove at the position of the fillet, and the main body is detachably installed between the fillet grooves of the plug shell through the fillet.

[0020] Through the above technical solution, the end seal adopts a split design, the sealing block wraps the light-emitting part to play the role of heat conduction and sealing, and the main body is detachably connected to the end of the plug shell. It can be disassembled and replaced after contacting the skin. There is no need to discard the entire device, which reduces the cost of use while maintaining safe and hygienic use.

[0021] Furthermore, the positive electrode sheet and the negative electrode sheet are arranged in pairs, the middle frame is located between the positive electrode sheet and the negative electrode sheet and has an escape opening penetrating through the side wall of the middle frame, and the plug shell and the lamp holder are made of a flexible material that can be bent.

[0022] Through the above technical solution, the position of the positive and negative electrodes of a single light-emitting part is relatively fixed, and the avoidance opening allows the middle frame between adjacent light-emitting parts to be bent within a certain range. Combined with the plug shell and lamp holder made of flexible material and a flexible power supply frame, the entire device can be bent to adapt to the contours of different body parts, fit better during use, increase the contact area, and avoid shifting and falling off from the corresponding therapy position.

[0023] Furthermore, one end of the middle frame away from the light-emitting portion is located outside the plug shell and is pressed against the side wall of the lamp holder, the middle section of the middle frame is built into the plug shell, and the plug shell is recessed toward the middle frame to form a notch corresponding to the raised plate, and the overlapping portion is clamped with the plug shell via the notch.

[0024] Through the above technical solution, the middle frame is wrapped by the plug shell, with a large contact area, good heat transfer effect, and can ensure the stable position of the middle frame. At the same time, the notch facilitates the contact between the overlapping part and the raised plate and prevents separation due to overall bending, making the power supply connection and thermal contact more stable.

[0025] Furthermore, the negative electrode sheet is provided with a convex key 1 on one side facing the center frame, the positive electrode sheet is provided with a convex key 2 on one side facing the center frame, and the end of the center frame is provided with positioning grooves corresponding to the outer contours of the convex key 1 and the convex key 2 respectively.

[0026] Through the above technical solution, when installing the negative electrode sheet and the positive electrode sheet, the relative distance between the negative electrode sheet and the positive electrode sheet is limited by using the convex key 1 and the convex key 2 to be clamped on the corresponding middle frame, which can facilitate the subsequent positioning and welding of the gold wire and the light-emitting chip, and avoid the breakage of the gold wire due to the relative position of the negative electrode sheet and the positive electrode sheet during subsequent installation and use. In addition, the embedded connection method can increase the effective contact area between the middle frame and the negative electrode sheet and the positive electrode sheet, thereby improving the thermal conductivity effect.

[0027] Furthermore, the power supply rack includes a power socket, the lamp holder is provided with a battery box located at the power socket, and the battery box is provided with a cover plate at the opening end.

[0028] Through the above technical solution, the power socket is set up in two pieces, which are set at the end of the power supply frame and arranged at both ends of the battery box. The space in the middle of the battery box can be used to install batteries and other power sources, so that the device can be used wirelessly, which is convenient for patients to move around during physical therapy.

[0029] Furthermore, the power supply rack includes a plug, which is located outside the lamp holder, and the plug supplies power to the pins through an external power supply.

[0030] Through the above technical solution, the plug is electrically connected to the end of the power supply frame, and the mains electricity can be directly used as a power source to power the light-emitting part, and batteries are not needed, thereby reducing the use cost and overall weight.

[0031] The beneficial effects of the present invention are as follows:

[0032] (1) The present invention provides a middle frame and pins, so that all positive and negative electrodes are in contact with the end surface of the middle frame for heat conduction, which can directly penetrate into the position of the light-emitting chip and guide and dissipate the heat inside the light-emitting part. The pins can transfer the heat of the light-emitting part to the power supply frame for power supply, and use the thermal conductivity of the metal power supply frame to conduct heat dissipation over a larger range, thereby ensuring the stable working temperature inside the device.

[0033] (2) The present invention optimizes the end seal so that the corrugated sheet can form a multi-section arc surface. When the corrugated sheet is suspended above the affected area for irradiation therapy, the light passing through the corrugated sheet is refracted and diverged. The corrugated sheet is made of a flexible colloid material, and the cavity can be filled with transparent heat-conducting oil. The heat-conducting oil is applied to the skin of the affected area. The heat-conducting oil guides the heat generated by the total reflection of part of the light in the device to the skin for hot compress.

[0034] (3) The present invention improves the pin, and a metal lining is installed at the arc portion of the pin. The pin serves as a conductive element and a heat dissipation element. When the operating temperature of the light-emitting part exceeds the deformation threshold, the metal lining and the arc portion are heated and drive the overlapping part to deform away from the contact piece, thereby disconnecting the power of the corresponding light-emitting part, temporarily disconnecting the power and cooling down. After the heat is gradually dissipated, the pin automatically resets and can continue to supply power to the light-emitting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is the overall structure diagram of the present invention;

[0036] Figure 2 It is a schematic diagram of the splitting of the present invention;

[0037] Figure 3 is a truncated schematic diagram of the present invention;

[0038] Figure 4 It is a schematic diagram of the positions of the positive electrode sheet, the negative electrode sheet, the pins and the middle frame of the present invention;

[0039] Figure 5 It is a schematic diagram of the separation of the positive electrode sheet, the negative electrode sheet, the pins and the middle frame of the present invention;

[0040] Figure 6 It is a schematic diagram of the state between one of the pins and the middle frame of the present invention;

[0041] Figure 7 It is another schematic diagram of the state between the pin and the middle frame of the present invention;

[0042] Figure 8 It is a partial enlarged schematic diagram of another middle frame of the present invention;

[0043] Fig. 9 It is a schematic diagram of the position between the plug housing and the end piece of the present invention;

[0044] Fig.10 It is a schematic diagram of the disassembly of the power supply rack, the battery box and the plug of the present invention.

[0045] Figure numerals: 1. lamp holder; 11. plug shell; 12. middle frame; 13. notch; 14. raised plate; 15. positioning groove; 16. avoidance; 17. embedded groove; 2. lamp holder; 3. end seal; 31. main body; 32. cavity; 33. corrugated sheet; 34. fillet; 35. sealing block; 4. power supply frame; 41. middle sheet; 42. contact sheet; 43. power socket; 44. plug; 45. battery box; 46. cover plate; 5. negative electrode sheet; 51. convex key one; 6. positive electrode sheet; 61. convex key two; 7. gold wire; 8. light-emitting chip; 9. pin; 91. power connection part; 92. arc part; 93. overlapping part; 94. metal lining. DETAILED DESCRIPTION

[0046] 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.

[0047] like Figure 1-Figure 10 As shown, this embodiment provides a packaging structure of an LED lamp bead, including multiple groups of light-emitting parts, referring to Figure 2 The light-emitting part includes a positive electrode sheet 6 and a negative electrode sheet 5, which correspond to each other one by one. The light-emitting part also includes a light-emitting chip 8 welded to the end face of the positive electrode sheet 6. The light-emitting chip 8 is attached to the plane of the positive electrode sheet 6 by a patch device and is electrically connected to the positive electrode sheet 6. The gold wire 7 is welded between the light-emitting chip 8 and the negative electrode sheet 5, so that the light-emitting chip 8 is connected in series between the positive electrode sheet 6 and the negative electrode sheet 5. When the positive electrode sheet 6 and the negative electrode sheet 5 are powered on, the light-emitting chip 8 can emit light. In order to adapt to the use scenario of light therapy, the light-emitting chip 8 emits red light and far-infrared light, which can heat and reduce swelling of the affected area. In addition to the light-emitting part, the device also includes the following specific structures to ensure the stability of the working temperature inside the device and guide part of the heat to a specific position for hot compress:

[0048] For lamp holder 1, refer to Figure 1 and Figure 2 The lamp holder 1 encapsulates and protects the light-emitting part, wherein the lamp holder 1 includes a plug shell 11, which is a hollow shell with a through middle portion, and a middle frame 12 is installed through the middle portion of the plug shell 11, and the middle frame 12 is a good thermal conductor, and, referring to Figure 4 All positive electrode sheets 6 and negative electrode sheets 5 are in contact with the end surface of the middle frame 12 for heat conduction, which can directly penetrate into the position of the light-emitting chip 8, guide and dissipate the heat inside the light-emitting part, and effectively cool it down. It should be noted that the middle frame 12 needs to use insulating materials, or an insulating layer is coated on the surface to prevent the positive electrode sheets 6 and the negative electrode sheets 5 from short-circuiting at the position of the middle frame 12;

[0049] For pin 9, refer to Figure 3The pin 9 is fixedly arranged at one end of the positive electrode sheet 6 and the negative electrode sheet 5 away from the light-emitting chip 8, and extends in a direction away from the light-emitting chip 8. The pin 9 includes a power connection portion 91, which is a conductive metal sheet. The power connection portion 91 extends to the outside of the lamp holder 1 to form a conductive structure exposed to the plug shell 11, and can also lead the heat at the positive electrode sheet 6 and the negative electrode sheet 5 to the outside of the lamp holder 1;

[0050] For lamp holder 2, refer to Figure 2 and Figure 3 The lamp holder 2 is sleeved and installed on one end of the lamp head 1 where the pin 9 is set. At the same time, a power supply frame 4 for supplying power to the pin 9 is built into the lamp holder 2. The power supply frame 4 is connected to an external power source. When the power connection part 91 is inserted into the lamp holder 2, the power connection part 91 can directly contact the power supply frame 4 to supply power to the light-emitting part, and can also transfer the heat of the light-emitting part to the power supply frame 4, so as to conduct heat dissipation in a larger range by using the power supply frame 4.

[0051] For end seal 3, refer to Figure 3 The end seal 3 is wrapped around the outside of the light-emitting part for sealing protection, and the end seal 3 is made of transparent material to avoid affecting the diffusion of light. The end seal 3 includes a main body 31 installed at the port position of the plug shell 11. The main body 31 is located at one end of the outer side of the plug shell 11 and is provided with a corrugated sheet 33. The corrugated sheet 33 can form a multi-section arc surface to refract and diverge the light passing through the corrugated sheet 33. It should be emphasized that when the device is fixed on the lamp stand and suspended above the affected area for irradiation therapy, the light emitted by the linearly arranged light-emitting parts can be dispersed to cover a larger range. It should be noted that in the main body 31 A cavity 32 is provided between the corrugated sheet 33 and the light-emitting part. The corrugated sheet 33 is made of flexible colloid material. The cavity 32 can be filled with transparent heat-conducting oil. This allows the corrugated sheet 33 to have a larger deformation amplitude without affecting the emission of light. The corrugated sheet 33 can attach the device to the skin of the affected part to perform direct contact luminous therapy on the affected part. Moreover, the emitted light can directly act on the affected part, and the light that is fully reflected in the device will generate heat and be transferred to the heat-conducting oil to absorb heat and heat up the affected part for auxiliary hot compress, thereby making full use of the different types of light energy generated by the light-emitting part and improving the energy utilization rate of the light-emitting part.

[0052] In a further embodiment, referring to Figure 3 The power connection part 91 is located at one end of the outer side of the lamp holder 1 and is formed with a continuous overlap part 93. The overlap part 93 is integrally arranged with the power connection part 91 and is made of the same heat-conducting and electrically-conducting metal material as the power connection part 91. The power connection part 91 and the middle frame 12 are parallel to each other and are vertically plugged into the lamp holder 2. A protruding plate 14 is arranged at one end of the middle frame 12 away from the light-emitting part. The power supply frame 4 is correspondingly embedded on the inner wall of the lamp holder 2 facing the protruding plate 14. Such a relative position design, referring to Figure 4When the overlapping portion 93 is inserted into the lamp holder 2, the overlapping portion 93 is pressed and contacted with the raised plate 14 and the power supply frame 4. After the pin 9 absorbs heat, it will transfer the heat to the end of the middle frame 12 away from the light-emitting portion through the arc portion 92 and the overlapping portion 93. In this way, the light-emitting portion has two heat transfer paths, the middle frame 12 and the pin 9, and the heat dissipation efficiency is higher. The heat can be transferred to the power supply frame 4 and the lamp holder 2 to dissipate heat in a larger range. At the same time, the overlapping portion 93 forms an arc portion 92 between the raised plate 14 and the power supply frame 4. The arc portion 92 makes the overlapping portion 93 bend at an acute angle and has elastic deformation ability. It can deform during insertion to ensure smooth insertion. The arc portion 92 forms an elastic gap between the overlapping portion 93 and the power connection portion 91. The detachable connection can replace the lamp holder 1 separately and use light-emitting portions with different light intensities.

[0053] In a further embodiment, referring to Figure 4 and Figure 6 The power supply frame 4 includes an intermediate sheet 41, which is a strip of copper sheet. A contact sheet 42 is provided at the corresponding overlap portion 93 of the intermediate sheet 41. The number of the contact sheets 42 is consistent with the number of light-emitting parts, so as to ensure that multiple light-emitting parts are powered at the same time. A receiving groove for installing the contact sheet 42 is provided on the inner wall of the lamp holder 2. One end of the contact sheet 42 is fixedly connected to the intermediate sheet 41. The middle part of the contact sheet 42 protrudes toward the raised plate 14. The arc portion 92 extends to the connection between the contact sheet 42 and the intermediate sheet 41. After being plugged into the lamp holder 2, the contact sheet The middle part of 42 itself protrudes toward the power connection part 91, and the arc part 92 is located at the connection between the contact piece 42 and the middle piece 41. The overlapping part 93 is squeezed and deformed between the contact piece 42 and the raised plate 14, and can be stably snapped in to avoid falling off during use. It should be noted that the end of the contact piece 42 that is not fixedly connected to the middle piece 41 is embedded in the accommodating groove, which can ensure that the overlapping part 93 will not be inserted into the top opening of the contact piece 42, and the contact piece 42 will not hinder the smooth insertion of the overlapping part 93.

[0054] In a further embodiment, referring to Figure 7The arc portion 92 is provided with an installation notch on one side of the inner edge, and the installation notch is equal to half the thickness of the arc portion 92. A metal lining 94 is embedded in the installation notch. Due to the difference in material, the deformation amplitude of the metal lining 94 when heated is smaller than that of the arc portion 92. Therefore, when the operating temperature of the light-emitting portion exceeds the deformation threshold, the expansion degree of the arc portion 92 is greater than that of the metal lining 94, thereby driving the overlapping portion 93 to deform away from the power supply frame 4, that is, the metal lining 94 and the arc portion 92 are tightly fixed and the heat drives the overlapping portion 93 to deform away from the power supply frame 4, thereby cutting off the power supply of the corresponding light-emitting portion and performing temporary power-off and cooling. When the heat transferred from the light-emitting portion to the arc portion 92 and the overlapping portion 93 gradually dissipates, the overlapping portion 93 is reset and can continue to supply power to the light-emitting portion. Multiple light-emitting portions work in coordination, and a short-term power-off and cooling of a light-emitting portion does not affect the normal operation of the entire device.

[0055] In a further embodiment, referring to Fig. 9 The end seal 3 adopts a split design. The end seal 3 includes a sealing block 35 wrapped around the outside of the light-emitting part. The sealing block 35 is a heat-conducting transparent material, which can seal all the light-emitting parts into one body to limit the position. At the same time, the sealing block 35 wraps the light-emitting part to play a role of heat conduction and sealing. The end seal 3 also includes a main body 31 that directly contacts the side wall of the sealing block 35. The main body 31 is detachably clamped on the end of the plug shell 11. A molding 34 is provided on the main body 31 near the inner wall of the plug shell 11. The plug shell 11 is provided with a molding groove 17 at the position of the molding 34. The molding 34 cooperates with the molding groove 17 to ensure the stability of the clamping. The main body 31 is detachably installed between the molding grooves 17 of the plug shell 11 through the molding 34. It can be disassembled and replaced after contacting the skin, and there is no need to discard the entire lamp head 1, which reduces the cost of use while maintaining safety and hygiene.

[0056] In a further embodiment, referring to Figure 8 The positive electrode sheet 6 and the negative electrode sheet 5 are arranged in pairs, and the positions of the positive electrode sheet 6 and the negative electrode sheet 5 of a single light-emitting part are relatively fixed. The middle frame 12 is located between the positive electrode sheet 6 and the negative electrode sheet 5 and is provided with an avoidance opening 16 that runs through the side wall of the middle frame 12. The avoidance opening 16 allows the middle frame 12 between adjacent light-emitting parts to bend within a certain range. The plug shell 11 and the lamp holder 2 are made of flexible materials that can be bent. With the plug shell 11 and the lamp holder 2 made of flexible materials, and the flexible power supply frame 4, the entire device can be bent to adapt to the contours of different body parts, such as the curvature of the waist and neck, or the curvature of the cheeks and chin. It fits better during use, increases the contact area between the corrugated sheet 33 and the skin, and avoids displacement and falling off from the corresponding treatment position.

[0057] In a further embodiment, referring to Figure 3 and Fig. 9The middle frame 12 is located at the outer side of the plug shell 11 at one end away from the light-emitting part and is pressed against the side wall of the lamp holder 2. The heat of the light-emitting part can be directly transferred to the position of the lamp holder 2, and the outer surface of the lamp holder 2 is used to assist in heat dissipation to improve the cooling efficiency. The middle section of the middle frame 12 is built into the plug shell 11. The middle frame 12 is wrapped by the plug shell 11, with a large contact area and good heat transfer effect. It can also ensure the stability of the position of the middle frame 12. The plug shell 11 corresponds to the raised plate 14 and is recessed toward the middle frame 12 to form a notch 13. The lap joint 93 is clamped with the plug shell 11 via the notch 13. Therefore, the notch 13 facilitates the contact between the lap joint 93 and the raised plate 14, and prevents separation due to overall bending, and the power supply connection and thermal contact are more stable.

[0058] In a further embodiment, referring to Figure 5 and Figure 8 A convex key 1 51 is provided on the side of the negative electrode sheet 5 facing the middle frame 12, and a convex key 2 61 is provided on the side of the positive electrode sheet 6 facing the middle frame 12. A positioning groove 15 corresponding to the outer contours of the convex key 1 51 and the convex key 2 61 is opened at the end of the middle frame 12. When the negative electrode sheet 5 and the positive electrode sheet 6 are installed, the convex key 1 51 and the convex key 2 61 are clamped on the corresponding middle frame 12, and the relative distance between the negative electrode sheet 5 and the positive electrode sheet 6 is limited, which can facilitate the subsequent positioning welding of the gold wire 7 and the light-emitting chip 8. At the same time, it is avoided that the gold wire 7 is broken due to the relative position of the negative electrode sheet 5 and the positive electrode sheet 6 during subsequent installation and use. In addition, the embedded connection method can increase the effective contact area between the middle frame 12 and the negative electrode sheet 5 and the positive electrode sheet 6, and improve the heat conduction effect. It should be emphasized that the inner wall of the positioning groove 15 also needs to be insulated to avoid the internal conduction of the middle frame 12 causing a short circuit between the negative electrode sheet 5 and the positive electrode sheet 6.

[0059] In a further embodiment, referring to Fig.10 The power supply frame 4 includes a power supply seat 43, which is arranged in two pieces and is arranged at the end of the power supply frame 4. The lamp holder 2 is located at the power supply seat 43 and is provided with a battery box 45. The power supply seat 43 is arranged at both ends of the battery box 45 and has protruding contacts and springs. The space in the middle of the battery box 45 can be used to install batteries and other power sources. The battery box 45 is located at the open end and a cover plate 46 is installed, so that the device can be used wirelessly, which is convenient for patients to move around during physical therapy and prevents batteries from falling off when walking.

[0060] In a further embodiment, referring to Fig.10 The power supply frame 4 includes a plug 44, which is electrically connected to the end of the power supply frame 4 and has a built-in inverter module. It can directly use the mains as a power source to power the light-emitting part. The plug 44 is located outside the lamp holder 2 to facilitate the connection of external wires. The plug 44 supplies power to the pin 9 through an external power source, and does not need to use a battery to power it, thereby reducing the cost of use and the overall weight.

[0061] The working principle of this embodiment is as follows:

[0062] During manufacturing, the positive electrode sheet 6 and the negative electrode sheet 5 with the pins 9 are fixed in the plug shell 11 of the lamp holder 1, and the plug shell 11 is inserted into the lamp holder 2. The ends of the pins 9 are pressed and contacted with the power supply frame 4 to supply power to multiple light-emitting chips 8 at the same time. The end seal 3 seals the light-emitting part and is made of transparent material.

[0063] When in use, the power supply frame 4 supplies power to the pin 9 through an external power supply, and the pin 9 makes the light-emitting chip 8 emit red light and far-infrared light to form a light strip for light therapy. The middle frame 12 cooperates with the pin 9 to absorb and disperse the heat at the positive electrode 6 and the negative electrode 5, and transfers the heat to the lamp holder 2 and the power supply frame 4 for heat dissipation to prevent overheating inside the light-emitting part.

[0064] In the scenario of being used on a fixed lamp stand, the corrugated surface of the corrugated sheet 33 forms multiple curved surfaces, so that the light is refracted and diverged. When the device is installed on the lamp stand as a whole, it is ensured that the light is evenly irradiated in a larger range;

[0065] In the use scenario of applying to the affected area, the corrugated sheet 33 is made of a flexible colloid material. When used in contact with the skin, the corrugated sheet 33 can be deformed to adapt to the body contour with the cavity 32 to ensure contact and prevent it from falling off. The cavity 32 can be filled with a liquid heat-conducting medium. When working, the light reflected by the device is used to heat and heat up, which can provide a hot compress to the applied skin.

[0066] When overheated, the overlapping portion 93 of the metal lining 94 deforms in a direction away from the contact piece 42, thereby cutting off the power to the corresponding light-emitting portion for temporary power-off and cooling. When the heat transferred from the light-emitting portion to the arc portion 92 and the overlapping portion 93 is gradually dissipated, the overlapping portion 93 is reset and can continue to supply power to the light-emitting portion. Multiple light-emitting portions work together, and a short-term power-off and cooling of a light-emitting portion will not affect the normal operation of the entire device.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A packaging structure of an LED lamp bead, comprising a plurality of light-emitting parts, wherein the light-emitting parts comprise a positive electrode sheet (6) and a negative electrode sheet (5), the light-emitting parts further comprise a light-emitting chip (8) welded to the end surface of the positive electrode sheet (6), and a gold wire (7) welded between the light-emitting chip (8) and the negative electrode sheet (5), characterized in that: Also includes: A lamp holder (1) for encapsulating and protecting a light-emitting part, the lamp holder (1) comprising a plug shell (11), a middle frame (12) being installed through the middle of the plug shell (11), and all of the positive electrode sheets (6) and the negative electrode sheets (5) being in contact with the end faces of the middle frame (12) for heat conduction; A pin (9) fixedly mounted on one end of the positive electrode sheet (6) and the negative electrode sheet (5) away from the light-emitting chip (8), the pin (9) comprising a power connection portion (91), and the power connection portion (91) extends to the outside of the lamp holder (1); A lamp holder (2) is sleeved and mounted on the outer side of one end of the lamp holder (1) where the pin (9) is arranged; A power supply frame (4) built into the lamp holder (2) and supplying power to the pins (9); An end seal (3) wrapped around the outside of the light-emitting portion, the end seal (3) comprising a main body (31) mounted at a port position of the plug shell (11), a corrugated sheet (33) being provided at one end of the main body (31) located outside the plug shell (11), and a cavity (32) being provided between the corrugated sheet (33) and the light-emitting portion of the main body (31); The power connection portion (91) is located at one end of the outer side of the lamp holder (1) and is formed with a continuous overlap portion (93); a protruding plate (14) is provided at one end of the middle frame (12) away from the light-emitting portion; the power supply frame (4) is correspondingly embedded on the inner wall of the lamp holder (2) facing the protruding plate (14); the overlap portion (93) is in pressing contact with the protruding plate (14) and the power supply frame (4); and the overlap portion (93) is formed with an arc portion (92) between the protruding plate (14) and the power supply frame (4); The power supply frame (4) comprises an intermediate sheet (41), a contact sheet (42) is provided on the intermediate sheet (41) at a position corresponding to the overlapped portion (93), an accommodating groove for installing the contact sheet (42) is provided on the inner wall of the lamp holder (2), one end of the contact sheet (42) is fixedly connected to the intermediate sheet (41), a middle portion of the contact sheet (42) is protruding in the direction of the raised plate (14), the arc portion (92) extends to the connection between the contact sheet (42) and the intermediate sheet (41), and an end of the contact sheet (42) not fixedly connected to the intermediate sheet (41) is embedded in the accommodating groove.

2. The packaging structure of the LED lamp bead according to claim 1, characterized in that: The arc portion (92) is provided with a mounting notch on one side of the inner edge, and a metal lining (94) is embedded and mounted in the mounting notch. The metal lining (94) and the arc portion (92) are tightly fixed and the overlap portion (93) is deformed in a direction away from the power supply frame (4) by the heat.

3. The packaging structure of the LED lamp bead according to claim 1, characterized in that: The end seal (3) comprises a sealing block (35) wrapped around the outside of the light-emitting portion, and a main body (31) directly contacting the side wall of the sealing block (35); the main body (31) is provided with a fillet (34) near the inner wall of the plug shell (11); the plug shell (11) is provided with a fillet groove (17) at a position corresponding to the fillet groove (34); the main body (31) is detachably mounted between the fillet grooves (17) of the plug shell (11) via the fillet strip (34).

4. The packaging structure of the LED lamp bead according to claim 3, characterized in that: The positive electrode sheet (6) and the negative electrode sheet (5) are arranged in pairs, the middle frame (12) is located between the positive electrode sheet (6) and the negative electrode sheet (5) and is provided with an escape opening (16) penetrating the side wall of the middle frame (12), and the plug shell (11) and the lamp holder (2) are made of a flexible material that can be bent.

5. The packaging structure of the LED lamp bead according to claim 4, characterized in that: The middle frame (12) is located at one end away from the light-emitting portion outside the plug shell (11) and is in pressing contact with the side wall of the lamp holder (2); the middle section of the middle frame (12) is built into the plug shell (11); the plug shell (11) is recessed in the direction of the middle frame (12) at a position corresponding to the raised plate (14) to form a notch (13); and the lap joint (93) is snap-fitted to the plug shell (11) via the notch (13).

6. The packaging structure of the LED lamp bead according to claim 1, characterized in that: The negative electrode sheet (5) is provided with a first convex key (51) on the side facing the middle frame (12), the positive electrode sheet (6) is provided with a second convex key (61) on the side facing the middle frame (12), and a positioning groove (15) corresponding to the outer contours of the first convex key (51) and the second convex key (61) is provided at the end of the middle frame (12).

7. The packaging structure of the LED lamp bead according to claim 6, characterized in that: The power supply rack (4) comprises a power supply seat (43), the lamp holder (2) is provided with a battery box (45) located at the power supply seat (43), and a cover plate (46) is installed at the opening end of the battery box (45).

8. The packaging structure of the LED lamp bead according to claim 7, characterized in that: The power supply frame (4) comprises a plug (44), the plug (44) is located outside the lamp holder (2), and the plug (44) supplies power to the pin (9) through an external power source.

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