Circuit board fixing structure, lamp socket and lighting device

Abstract

To provide a circuit board fixing structure, a lamp socket comprising the circuit board fixing structure and a lighting device, to solve a problem of difficulty in the prior arts in arranging circuits and components in the vicinity of existing screws when a circuit board is mounted by using screwing or engagement.SOLUTION: A circuit board fixing structure comprises: a circuit board; a radiator provided on one surface of the circuit board; a first through hole provided in the circuit board; a second through hole provided in the radiator so as to correspond to the first through hole; an insulation protection member provided corresponding to the first through hole, and including a pedestal and an annular insulation sleeve; and a screw including a screw head and a screw shaft. The screw shaft passes through the pedestal of the insulation protection member, the first through hole, and the second through hole in this order, and is screwed into a fixing part provided with a screw hole. The screw head is pressed against the insulation protection member. The insulation protection member is provided with the annular insulation sleeve having a predetermined height so as to surround the screw head.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of electrical appliances, and in particular to a circuit board fixing structure, a lamp socket having the circuit board structure, and a lighting device having the lamp socket. [Background technology]

[0002] 2. Description of the Related Art As LEDs (Light Emitting Diodes) are widely used for indoor lighting, outdoor lighting, and commercial lighting, LED lighting devices are becoming more and more popular.

[0003] Due to the mechanism of light emission, LED lighting devices require the use of a circuit board. The circuit board is usually installed inside the LED lighting device, and since it houses various electrical components such as chips, transformers, electrolytic capacitors, and resistors, it may generate heat during operation. For this reason, a heat sink corresponding to the circuit board is usually also installed.

[0004] Conventionally, there are two methods for mounting and fastening a circuit board to an LED lighting device. The first method is screw fastening, which uses screws to attach and fasten the circuit board to other components, such as a heat sink adjacent to the circuit board. However, integrated LED lighting devices that integrate power and drive circuits require increased functionality and miniaturization, necessitating the mounting of more circuit components on a smaller circuit board. However, because most screws are made of metal, when mounting metal screw heads on a circuit board using screw fastening, it is difficult to mount more circuit components closely around the screw head due to factors such as insulation and safety distances. This makes it difficult to meet both needs: mounting more circuit components on a smaller circuit board.

[0005] The second conventional method for fixing a circuit board to an LED lighting device is engagement fixing. Specifically, the circuit board is aligned and attached by engaging the periphery of the circuit board with multiple engagement points on the inner wall of the housing of the LED lighting device that houses the circuit board. However, this attachment method requires engaging the circuit board with multiple engagement points at once, making the attachment difficult. In addition, the adhesion between the circuit board and the heat sink after engagement attachment is often insufficient, making it unsuitable for heat dissipation from the circuit board. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been proposed in view of the above problems, and aims to provide a circuit board fixing structure that can solve the problems of the prior art, such as difficulty in engaging and attaching a circuit board, low heat dissipation effect, and difficulty in arranging circuits and components near the screws when attaching the screws, as well as a lamp socket and lighting device that include said fixing structure. [Means for solving the problem]

[0007] A first form of the present invention provides a circuit board fixing structure, the fixing structure comprising: a circuit board; a heat sink provided on one side of the circuit board; a first through hole provided in the circuit board; a second through hole provided in the heat sink corresponding to the first through hole; an insulating protection member provided corresponding to the first through hole and including a base and an annular insulating sleeve; and a screw including a screw head and a screw shaft, the screw shaft passing through the base, the first through hole and the second through hole of the insulating protection member in that order and screwed into a screw hole provided in a fixing part, the screw head being pressed against the insulating protection member, and the insulating protection member having an annular insulating sleeve of a predetermined height provided to surround the screw head.

[0008] According to this technical means, the circuit board fixing structure includes a circuit board and a heat sink, and uses screws to fix the circuit board and the heat sink together on the fixing part, and provides an insulating protective member. The insulating protective member surrounds the base and the screw head to cover the screw, thereby isolating it from the circuit board and other components on the circuit board, thereby improving the insulation between the screw and other components on the circuit board, and by arranging circuits and components near the screws, space can be fully utilized, further improving safety when arranging the circuit board. In addition, there is no need to attach and fix the circuit board using other methods, such as an engagement method. By simply fixing the circuit board to the heat sink, it is possible to smoothly attach and fix the circuit board using a structure for fixing the heat sink to another part, such as a housing.

[0009] In the above technical means, it is preferable that a convex portion is provided on the base of the insulating protection member on the side opposite the annular insulating sleeve, and a corresponding concave portion is provided on the circuit board to align with the convex portion. According to this preferable technical means, in the assembly process of providing a convex portion on the insulating protection member and fitting the convex portion into a corresponding concave portion, the insulating protection member is first fixed to the circuit board by fitting the convex portion into the concave portion, and formed integrally with the circuit board, and then the insulating protection member and the circuit board are fixed as a unit to a fixing portion having a screw hole by a screw, which makes it easy to position the insulating protection member and the circuit board relative to each other and facilitates the fixing and assembly work of the circuit board.

[0010] In the above technical means, the length by which the protrusions protrude from the base is preferably at least greater than the thickness of the circuit board. According to this preferred technical means, the protrusions are provided on the insulating protection member, and they extend through the circuit board and into the heatsink to be fixed therein. In the assembly process, the circuit board is first inserted into the heatsink through the protrusions to temporarily position and fix the insulating protection member, circuit board, and heatsink together, and then the insulating protection member, circuit board, and heatsink are fixed together with screws to fixing parts having threaded holes, which makes it easy to position the insulating protection member and the circuit board relative to each other and to assemble the circuit board.

[0011] In the above technical means, it is preferable that there are at least two first through holes in the circuit board, two second through holes in the heatsink, two insulating protective members surrounding the screw heads, and two screws. The circuit board fixing structure of this preferred technical means has multiple fixing means that are commonly combined to fix the circuit board and the heatsink, thereby further improving the positioning effect of both the circuit board and the heatsink, and increasing the number of through holes and screw holes can disperse stress concentration that occurs when fixing with a single screw.

[0012] In the above technical solution, the predetermined height of the annular insulating sleeve surrounding the screw head is preferably at least greater than the height of the screw head, which makes it easier to align with the base, surround and separate the screw, and also provides insulation between the metal screw and other circuit board components.

[0013] In the above technical means, it is preferable that the heat sink further has slots that align with the protrusions of the insulating protection member, and the protrusions are inserted into the slots. According to this preferable technical means, by providing the heat sink with slots that align with the protrusions, it becomes easier to position and align the protrusions and the heat sink, which makes it easier to position and attach the insulating protection member and the heat sink, making it easier to attach them with screws, and the alignment of the protrusions and the slots also has the effect of assisting fixation.

[0014] A second aspect of the present invention provides a lamp socket having any one of the above circuit board fixing structures, the lamp socket having an outer shell that houses the circuit board fixing structure therein, the circuit board fixing structure being any one of the above circuit board fixing structures, and the fixing portion having a screw hole and the outer shell are formed integrally.

[0015] According to the lamp socket provided by the present invention, the circuit board and the heat sink are integrally fixed to the outer casing of the lamp socket by screws, which simplifies the fixing and assembly work of the circuit board and the heat sink and improves installation efficiency.

[0016] In the above technical solution, it is preferable to further provide an elastic heat dissipation pad on the opposite side of the heat sink of the circuit board. The elastic heat dissipation pad and the heat sink respectively dissipate heat from both sides of the circuit board 1, allowing some of the heat from the circuit board to be released from the opposite side of the heat sink, thereby further improving heat dissipation efficiency and preventing heat accumulation on either side of the circuit board. In addition, the elastic heat dissipation pad has a certain flexibility and can deform under pressure, making it easier to position other components, such as the LED module heat sink located on the opposite side of the circuit board. Furthermore, the elastic heat dissipation pad often uses an insulating material, which can further ensure insulation between the heat sink and other components, improving the safety of the circuit board and LED module heat sink during operation. The elastic heat dissipation pad also has a certain protective and cushioning effect, preventing the circuit board structure from being damaged by impact during transportation, etc.

[0017] In the above technical solution, it is preferable that the elastic heat dissipation pad has a notch at a position corresponding to the insulating protection member, which effectively prevents the insulating protection member or the protrusion of the screw head from pushing up the elastic heat dissipation pad after it is attached to the circuit board, thereby reducing the effective contact area between the elastic heat dissipation pad and the circuit board.

[0018] A third aspect of the present invention provides a lighting device, comprising a lamp socket according to any one of the above technical means, wherein the lighting device further comprises an LED module heat sink on the opposite side of the elastic heat sink from the circuit board, and an LED module substrate on the other side of the LED module heat sink.

[0019] In the lighting device of the above technical means, by using the circuit board fixing structure provided by the present invention, when assembling the lighting device, the heat sink, circuit board, heat dissipation pad, LED module heat sink, and LED light-emitting module can be assembled in this order inside the outer casing of the lighting device through the opening of the outer casing. Because the circuit board is integrated with the heat sink in the outer casing of the lighting device using the circuit board fixing structure, the assembly process is simple and reliable, and the problems of difficult circuit board engagement and installation, low heat dissipation effect, and difficulty in locating circuits and components near screws that may be present when installing with screws can be solved. Furthermore, by providing the LED module heat sink on the other side of the elastic heat dissipation pad, part of the heat from the circuit board can be dissipated by conduction from the LED module heat sink, further improving heat dissipation efficiency. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram of a component mounting structure for a circuit board provided by the present invention. [Figure 2] FIG. 2 is an enlarged partial cross-sectional view of the circuit board fixing structure of FIG. 1 cut along the plane of the axis of the through hole. [Figure 3] FIG. 3 is an enlarged partial cross-sectional view of another circuit board fixing structure provided by the present invention. [Figure 4] FIG. 4 is an enlarged partial cross-sectional view of still another circuit board fixing structure provided by the present invention. [Figure 5] FIG. 5 is a schematic diagram of the components mounted in the lamp socket provided by the present invention. [Figure 6] FIG. 6 is a schematic diagram showing the mounting of components in the lighting device provided by the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be described in detail below in connection with specific embodiments. The following embodiments will help those skilled in the art to better understand the present invention, but the present invention is not limited to any particular form. In particular, those skilled in the art may make some modifications and improvements without departing from the spirit of the present invention. All of these are included in the scope of protection of the present invention.

[0022] (Embodiment 1) Fig. 1 is a schematic diagram of a component mounting structure for a circuit board fixing structure provided by the present invention, and Fig. 2 is an enlarged partial cross-sectional view of the circuit board fixing structure of Fig. 1, taken along the axis of a through hole. As shown in Figs. 1 and 2 combined, the circuit board fixing structure includes a circuit board 1, a heat sink 2 provided on one side of the circuit board 1, a first through hole 3 provided in the circuit board 1, a second through hole 4 provided in the heat sink 2 so as to correspond to the first through hole 3, an insulating protection member 5 provided corresponding to the first through hole 3 and including a base 51 and an annular insulating sleeve 52, and a screw 6 including a screw head 61 and a screw shank 62. The screw shank 62 passes through the base 51, the first through hole 3, and the second through hole 4 of the insulating protection member 5 in that order and is screwed into a screw hole provided in the fixing portion 12. The screw head 61 is pressed against the insulating protection member 5, and the insulating protection member 5 is provided with an annular insulating sleeve 52 of a predetermined height surrounding the screw head 61.

[0023] In this embodiment, the circuit board fixing structure has been described as being applied to the mutual fixing of the heat sink 2 and the circuit board 1 in a lighting fixture, but those skilled in the art will understand that the present invention is not limited to this, and that the present invention can be similarly applied to cases where the circuit board 1 and the heat sink 2 are fixed to each other using screws 6 and insulating protective members 5 in other electrical devices.

[0024] In addition, although the present embodiment does not limit the shape and structure of the first through hole 3 and the second through hole 4, those skilled in the art will understand that the first through hole 3 or the second through hole 4 is formed as a hole type through which the screw shaft 62 of the screw 6 passes and blocks the screw head 61 of the screw 6, and for example, in one embodiment, the first through hole 3 or the second through hole 4 may be formed as a screw hole so as to further strengthen the fixation of the screw 6 to the circuit board 1 and the heat sink 2, and in other embodiments, the first through hole 3 or the second through hole 4 may be formed as a general circular hole, and all of the above through hole structures do not deviate from the protective scope of the present invention.

[0025] Specifically, in this embodiment, after the circuit board fixing structure of the present invention is assembled, the threaded shaft 62 of the screw 6 passes through the insulating protection member 5, the first through-hole 3 in the circuit board 1, and the second through-hole 4 in the heatsink 2, in that order, and is then threaded into and aligned with the threaded hole in the fixing portion 12. By using the screw 6 to fix the circuit board 1 and the heatsink 2 together in this manner, the heatsink 2 and the circuit board 1 can be effectively positioned and fixed. Furthermore, in this embodiment, the insulating protection member 5 is provided, and the annular insulating sleeve 52 surrounding the base 51 of the insulating protection member 5 and the screw head 61 surrounds and covers the screw 6, thereby improving electrical insulation between the screw head 61 and the surface of the circuit board 1 and between the screw head 61 and other components on the circuit board 1. This allows circuits and components to be placed near the screw 6, making full use of space and further improving safety when placing the circuit board 1. Moreover, since there is no need to attach and fix the circuit board 1 by other methods, such as an engagement method, the circuit board 1 can be easily and quickly attached and fixed simply by fixing the circuit board 1 together with the heat sink 2 to another part, such as the fixing part 12, using screws 6.

[0026] In particular, in the assembly preparation process, the screw shaft 62 of the screw 6 can be passed through the insulating protection member 5 and then the first through hole 3 provided in the circuit board 1, and then the insulating protection member 5 and the circuit board 1 can be assembled as a whole and attached to the fixing part 12 at one time. The screw shaft 62 of the screw 6 can be passed through the insulating protection member 5, then the first through hole 3 provided in the circuit board 1, and then the second through hole 4 provided in the heatsink 2, and then the insulating protection member 5, circuit board 1, and heatsink 2 can be assembled as a whole and mounted to the fixing part 12 at one time. This improves the efficiency and reliability of mounting.

[0027] Here, it is preferable that there are at least two first through holes 3 provided in circuit board 1, two second through holes 4 provided in heatsink 2, two insulating protective members 5 surrounding screw heads 61, and two screws 6, and that they are arranged symmetrically to one another in appropriate positions on circuit board 1. In this embodiment, by combining a plurality of such fixing structures to fix circuit board 1 and heatsink 2, the positioning effect of both circuit board 1 and heatsink 2 can be further strengthened, and the increased number of first through holes 3 and second through holes 4 can disperse stress concentration that occurs when fixing with a single screw 6.

[0028] Here, it is preferable that the predetermined height of the annular insulating sleeve 52 surrounding the screw head 61 is at least higher than the height of the screw head 61. By making the height of the annular insulating sleeve 52 higher than the screw head 61, it becomes easier to align with the base 51 and surround and separate the screw 6, which further reduces the possibility of contact between the screw 6, such as a metal screw, and other components mounted on the circuit board 1, improves the insulating effect, prevents the screw from affecting the arrangement of circuits and components near the screw, and allows for full use of space.

[0029] (Embodiment 2) Figure 3 is an enlarged partial cross-sectional view of another circuit board fixing structure provided by the present invention, and the cutting position is the same as the cutting position of Figure 2. In Figure 3, the same reference numerals are used for the same structures as those in embodiment 1, and the description will not be repeated.

[0030] 3, the second embodiment of the present invention differs from the first embodiment in that a protrusion 8 is further provided on the surface of the base 51 of the insulating and protective member 5 opposite the annular insulating sleeve 52. The circuit board 1 is further provided with a recess 8a that matches and corresponds to the protrusion 8.

[0031] A convex portion 8 is further provided on the surface of the base 51 of the insulating protection member 5 opposite the annular insulating sleeve 52, and a corresponding concave portion 8a is provided on the circuit board 1 that matches the convex portion 8. The convex portion 8 fits into the concave portion 8a, thereby assisting in positioning the insulating protection member 5 on the circuit board 1, and when assembling by inserting the screw 6, the insulating protection member 5 and the circuit board 1 are assembled as a single unit, simplifying the assembly process, and since the insulating protection member 5 has an independent fixing structure, sliding or misalignment does not occur.

[0032] 3 shows the structure of only one protrusion 8 and recess 8a, the present embodiment is not limited to this, and one insulating protection member 5 may be provided with multiple protrusions 8. When one insulating protection member 5 is provided with multiple protrusions 8, multiple corresponding recesses 8a may be provided on the circuit board 1. By aligning the multiple protrusions 8 with the recesses 8a, it becomes more effective to position and fix the insulating protection member 5 to the circuit board 1.

[0033] 3 is a recessed structure that does not penetrate through the circuit board 1, but the present embodiment is not limited to this. Furthermore, the depth of the surface of the recessed portion 8a that is recessed into the circuit board 1 is not limited, and the recessed portion 8a may have a through-hole structure that penetrates through the thickness direction of the circuit board 1. The recessed portion 8a may have any shape as long as it can fit into the protruding portion 8 and accommodate the protruding portion 8.

[0034] 3 does not have a gradient change in the length direction, this embodiment is not limited to this, and the protrusion 8 may have a gradient change in the length direction, for example, may be a wedge or cone shape tapering toward its end. Correspondingly, the recess 8a may be a wedge or cone shape that gradually widens from the surface of the circuit board 1 to match the protrusion 8. A wedge-shaped or cone-shaped protrusion 8 can be more easily inserted into the recess 8a, making it more effective to assemble the insulating protection member 5 to the circuit board 1.

[0035] (Embodiment 3) Figure 4 is an enlarged partial cross-sectional view of yet another circuit board fixing structure provided by the present invention, and the cutting position is the same as the cutting position in Figures 2 and 3. In Figure 4, the same reference numerals are used for the same structures as in Embodiments 1 and 2, and repeated description will not be given.

[0036] The circuit board fixing structure of the third embodiment differs from the second embodiment in that the length of the protrusion 8 protruding from the plane on which the seat 51 of the insulating protective member 5 is located is at least greater than the thickness of the circuit board 1. The heat sink 2 is further provided with a slot 7 that is aligned with the protrusion 8, and the protrusion 8 can be inserted into the slot 7. Furthermore, the recess 8a of the circuit board 1 in this embodiment has a through-hole structure that penetrates the circuit board 1.

[0037] In this preferred embodiment, the insulating protection member 5 is provided with a protrusion 8, the length of which is sufficient to penetrate the circuit board 1 and reach into the slot portion 7 of the heatsink 2 for fixation. In the assembly process, the circuit board 1 is first penetrated by the protrusion 8, and the insulating protection member 5 is pre-mounted on the circuit board 1 using the protrusion 8 to temporarily position and fix the insulating protection member 5 and the circuit board 1 together. Then, the insulating protection member 5 and the circuit board 1 are integrated together, and the tip of the protrusion 8 is inserted into the slot portion 7 to temporarily position and fix the insulating protection member 5, circuit board 1 and heatsink 2 together. Then, screws 6 are used to fix the insulating protection member 5 to fixing portions 12 having threaded holes, thereby facilitating the relative positioning of the heatsink 2 and the circuit board 1 and facilitating the fixing and assembly work of the circuit board 1.

[0038] Therefore, in this embodiment, by providing the protrusions 8 and the slots 7 that align with the protrusions 8, it is effective to improve the efficiency of the fixing and assembling work of the circuit board 1. In addition, the alignment of the protrusions 8 with the slots 7 also has the effect of assisting fixing.

[0039] 4 of the embodiment of the present invention shows only one protrusion 8, but the present invention is not limited to this and multiple protrusions 8, for example, two or three protrusions 8, may be provided on the same insulating protection member 5. When there are two or three protrusions 8, the insulating protection member 5 can be more stably fixed to the circuit board 1 and the heat sink 2 in advance.

[0040] As shown in FIG. 4, it is preferable to use a wedge shape with a narrower width for the protrusion 8 so that the protrusion 8 can be more reliably aligned with and inserted into the heat sink 2, and to use a wedge shape for the slot 7 that matches the protrusion 8, thereby improving the effect of pre-fixing before mounting and the effect of assisting fixation after mounting.

[0041] (Fourth embodiment) Fig. 5 is a structural schematic diagram of a lamp socket provided by the present invention. As shown in Fig. 5, the lamp socket includes an outer shell 13 that houses a circuit board fixing structure therein. The circuit board fixing structure may be any of the circuit board fixing structures of embodiments 1 to 3. Here, particularly in this embodiment, fixing portion 12 provided with a screw hole is formed integrally with outer shell 13.

[0042] The lamp socket provided in this embodiment uses screws 6 to integrally fix the circuit board 1 and the heat sink 2 to the outer casing 13 of the lamp socket, thereby simplifying the fixing and assembly work of the circuit board 1 and the heat sink 2 and improving the mounting efficiency.

[0043] In particular, although Figure 5 does not specifically describe the specific configuration of the outer casing 13, those skilled in the art will recognize that any outer casing 13 that can accommodate a circuit board fixing structure in which a fixing portion 12 with a screw hole is located can be applied to the present invention.

[0044] Preferably, an elastic heat dissipation pad 9 is further provided on the side of the circuit board 1 opposite the heat sink 2. The elastic heat dissipation pad 9 and the heat sink 2 respectively dissipate heat from both sides of the circuit board 1, dissipating some of the heat from the circuit board 1 from the opposite side of the heat sink 2, thereby further improving heat dissipation efficiency and preventing heat accumulation on either side of the circuit board 1. The elastic heat dissipation pad 9 also has a certain flexibility and can deform under pressure, making it easier to position other components. Furthermore, the elastic heat dissipation pad 9 is often made of an insulating material, which further ensures insulation between the heat sink 2 and other components. The elastic heat dissipation pad 9 also has a certain protective and cushioning effect, preventing the structure of the circuit board 1 from being damaged by impact during transportation, etc.

[0045] For example, in one embodiment of the present invention, elastic heat dissipation pad 9 is provided between circuit board 1 and LED heat dissipation module (not shown). In this case, elastic heat dissipation pad 9 can dissipate some of the heat from circuit board 1 to the LED module heat sink on the opposite side of heat sink 2. Furthermore, when the LED module heat sink and circuit board 1 are aligned and mounted, pressure is generated on elastic heat dissipation pad 9 between them. However, because elastic heat dissipation pad 9 has a certain flexibility, it can deform under the pressure during the pressing process and maintain close contact between them. Furthermore, during mounting, the LED module heat sink must be insulated from the circuit board 1 when it is fixed to the circuit board 1. Therefore, providing elastic heat dissipation pad 9 made of an insulating material between them not only positions the LED module heat sink but also ensures that the LED module heat sink and circuit board 1 are insulated from each other, thereby improving the operational safety of the circuit board 1 and the LED module heat sink.

[0046] Here, it is preferable that a notch 91 is provided in the elastic heat dissipation pad 9 at a position corresponding to the insulating protection member 5. In a preferred embodiment of the present invention, this can effectively prevent the effective contact area between the elastic heat dissipation pad 9 and the circuit board 1 from being reduced due to the elastic heat dissipation pad 9 being pushed up by the insulating protection member 5 or the protrusion of the screw head 61 after mounting.

[0047] (Embodiment 5) Fig. 6 is a structural schematic diagram of a lighting device provided by the present invention. This lighting device includes any of the lamp sockets described in embodiment 3. As shown in Fig. 6, this lighting device further includes an LED module heat sink 10 on the opposite side of elastic heat sink pad 9 from circuit board 1, and an LED module substrate 11 on the other side of LED module heat sink 10. The lighting device provided by this embodiment uses the circuit board fixing structure or lamp socket provided by embodiment 1, embodiment 2, embodiment 3, or embodiment 4. Therefore, when assembling the lighting device, the circuit board fixing structure consisting of heat sink 2 and circuit board 1, elastic heat sink pad 9, LED module heat sink 10, and LED module substrate 11 can be assembled in this order inside the outer casing 13 of the lighting device through the opening of outer casing 13. Since the circuit board 1 is integrated with the heat sink 2 on the outer casing 13 of the lighting device using the above-mentioned circuit board fixing structure, the assembly process is simple and reliable, and the problems of difficulty in fitting and mounting the circuit board 1, low heat dissipation effect, and difficulty in arranging circuits and components near the screws 6 that may be present when mounting the screws can be solved. Furthermore, by providing an LED module heat sink 10 on the other side of the elastic heat dissipation pad 9, some of the heat from the circuit board 1 can be dissipated from the LED module heat sink 10 by conduction, further improving heat dissipation efficiency.

[0048] In the above multiple embodiments, emphasis is placed on each of the descriptions of each embodiment, and for parts that are not described in detail in one embodiment, reference can be made to the relevant descriptions of other embodiments, and the technical means of different embodiments can be combined with each other, and the combined form still falls within the protection scope of the present invention.

[0049] Although the technical means of the present invention have been described above in conjunction with the drawings, it is obvious to those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. As long as it does not deviate from the spirit of the present invention, those skilled in the art may make equivalent modifications or substitutions to the relevant technical features, and all of these modified or substituted technical means will fall within the scope of protection of the present invention. [Explanation of symbols]

[0050] 1 circuit board 2 Heatsink 3 First through hole 4 Second through hole 5. Insulating protective material 51 Pedestal 52 Annular insulating sleeve 6 screws 61 Screw head 62 Screw shaft 7 Slot section 8 Convex part 8a Recess 9 Elastic heat dissipation pad 91 Notch 10 LED module heat sink 11 LED module board 12 Fixed part 13 Outer Wall

Claims

1. A circuit board; a heat sink provided on one side of the circuit board; a first through hole provided in the circuit board; a second through hole provided in the heat sink to correspond to the first through hole; an insulating protection member provided corresponding to the first through hole and including a base and an annular insulating sleeve; a screw including a screw head and a screw shaft; The screw shaft passes through the base, the first through hole, and the second through hole of the insulating protection member in this order and is screwed into a fixing portion provided with a screw hole, the screw head is pressed against the insulating protection member, and the insulating protection member is provided with an annular insulating sleeve of a predetermined height so as to surround the screw head; a protrusion is provided on a surface of the base of the insulating protection member opposite to the annular insulating sleeve, The circuit board is provided with a recess that is aligned with and corresponds to the protrusion, the recess has a shape that fits with the protrusion and accommodates the protrusion, The recess and the first through hole are provided at different positions on the circuit board. Circuit board fixed structure.

2. The length of the protrusion from the base is at least greater than the thickness of the circuit board. The circuit board fixing structure according to claim 1 .

3. The first through hole, the second through hole, the insulating protection member, and the screw each have at least two. The circuit board fixing structure according to claim 1 or 2.

4. The predetermined height of the annular insulating sleeve is at least greater than the height of the screw head. The circuit board fixing structure according to any one of claims 1 to 3.

5. A circuit board; a heat sink provided on one side of the circuit board; a first through hole provided in the circuit board; a second through hole provided in the heat sink to correspond to the first through hole; an insulating protection member provided corresponding to the first through hole and including a base and an annular insulating sleeve; a screw including a screw head and a screw shaft; The screw shaft passes through the base, the first through hole, and the second through hole of the insulating protection member in this order and is screwed into a fixing portion provided with a screw hole, the screw head is pressed against the insulating protection member, and the insulating protection member is provided with an annular insulating sleeve of a predetermined height so as to surround the screw head; a protrusion is provided on a surface of the base of the insulating protection member opposite to the annular insulating sleeve, The circuit board is provided with a recess that is aligned with and corresponds to the protrusion, The heat sink further has a slot, and the protrusion is inserted into the slot. Circuit board fixed structure.

6. an outer shell that houses a circuit board fixing structure therein; The circuit board fixing structure is the circuit board fixing structure according to any one of claims 1 to 5, characterized in that the fixing portion and the outer shell are integrally formed. Lamp socket.

7. The circuit board is further provided with an elastic heat dissipation pad on the opposite side of the heat sink.

7. A lamp socket according to claim 6.

8. An outer shell that houses a circuit board fixing structure therein, The circuit board fixing structure includes: A circuit board; a heat sink provided on one side of the circuit board; a first through hole provided in the circuit board; a second through hole provided in the heat sink to correspond to the first through hole; an insulating protection member provided corresponding to the first through hole and including a base and an annular insulating sleeve; a screw including a screw head and a screw shaft; The screw shaft passes through the base, the first through hole, and the second through hole of the insulating protection member in this order and is screwed into a fixing portion provided with a screw hole, the screw head is pressed against the insulating protection member, and the insulating protection member is provided with an annular insulating sleeve of a predetermined height so as to surround the screw head; The fixing portion and the outer shell are integrally formed, an elastic heat dissipation pad is further provided on the opposite side of the circuit board from the heat sink; The elastic heat dissipation pad is provided with a notch at a position corresponding to the insulating protection member. Lamp socket.

9. A lamp socket according to claim 7 or 8, an LED module heat sink is further provided on the opposite side of the elastic heat sink pad from the circuit board; The LED module substrate is further provided on the other side of the LED module heat sink. Lighting equipment.

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