JP6808569B2 - LED socket and LED socket structure - Google Patents

Description

The present invention relates to an LED socket used for a COB (Chip On Board) type in which an LED (Light Emitting Diode) element is mounted on a ceramic or aluminum substrate, and an LED socket structure holding a COB type LED.

The COB type is referred to as an LED structure, an LED package, a COB type LED package, or the like. Therefore, in the present specification, as in Patent Document 1, the COB type is referred to as an LED structure, the holder or the like holding the LED structure is referred to as an LED socket, and the LED socket holding the LED structure is called the LED socket structure. It is called.

Compared to the SMD (Surface Mount Device) type, the COB type LED structure has a power supply terminal located on the front surface (upper surface) side and has a large number of mounted chips, making it suitable for high output and high light beam illumination. As an LED socket structure in which an LED structure is held in an LED socket as exemplified in Document 1, it is incorporated into a lighting fixture, a lighting device, or the like. 10 and 11 show two examples of the LED socket structure disclosed in Document 1.

FIG. 10A is an exploded perspective view of the LED socket structure, and FIG. 10B is a view of the LDE socket structure viewed from the back surface side. Reference numerals 0210 and 0110 are both the same LED structure, and reference numerals 0200 and 0100 are both the same LED socket. The LED structure 0210 includes a substrate 0211, a light emitting unit 0212, a power supply pad (power supply unit) 0213, and a support unit 0214. Of these, the light emitting unit 0212 has an LED element arranged on a substrate and sealed in a resin. The power supply pad 0213 has two power supply terminals on the front surface side, and the end portion of an electric wire (hereinafter referred to as a lead wire) connected to an external power supply can be connected to each power supply terminal via a power supply terminal or the like. .. The support portion 0214 is a substrate portion excluding the light emitting portion and the power supply pad on the substrate, and is a portion supported by the LED socket. The LED structure is fitted into the opening 0203 of the LED socket from the back side to the inside with the light emitting portion 0212 facing upward with respect to the LED socket.

That is, the LED socket 0200 has a substantially rectangular opening 0203 at a substantially central position, six support receiving portions a at the opening edge portion, and two cantilever elastic support portions b which are main portions. In (a), the symbols a and b are not included in the original drawing and are newly added. Aperture 0203 exposes the light emitting portion above the substrate. The six bearing portions a, except for those adjacent to the cantilever elastic support portion b as inferred from (b), receive the bearing portion 0214 of the LED structure so as not to come out upward, and the bearing portion a. Is fitted within the thickness of the socket, and the two bearing receiving portions a adjacent to the cantilever elastic support portion are fitted with the corresponding side surfaces of the bearing portion 0214. Each cantilever elastic support portion b laterally elastically supports the facing side surface of the substrate in a cantilever structure in a sandwiched state to crimp and fix the substrate. It is said that this makes it possible to significantly eliminate the risk of the LED structure being damaged or malfunctioning. The above LED socket is developed as shown in FIG. 11 because a power supply terminal or the like is incorporated as a power supply mechanism.

11 (a) and 11 (b) are views in which the LED structure 1210 is mounted on the LED socket 1200, that is, the LED socket structure is viewed from the front and back sides. The LDE socket 1200 consists of a first half body 1230 and a second half body 1240. The first half body 1230 corresponds to the LED socket 0200, reference numeral 1231 corresponds to the support receiving portion a, and reference numeral 1232 corresponds to the cantilever elastic support portion b. The second half body 1240 has an upper opening in a central portion that exposes a light emitting portion, a terminal receiving portion for a power feeding terminal provided on the inner surface side, a guide groove for a lead wire, and the like (see FIG. 13 of Document 1). ). The first half body 1230 and the second half body 1240 are joined by a plurality of clips 1250 in a superposed state. Reference numeral 1220 is a lead wire connected to the power feeding pad via a power feeding terminal or the like.

JP-A-2015-204157

It is preferable that the above LED socket is excellent in heat dissipation as well as durability and insulation. The point of heat dissipation becomes an important examination item as the total luminous flux is increased because the LED structure generates light and heat according to the input power. By the way, when the conventional LED sockets are roughly classified according to the material, the first half body and the second half body are both made of resin, the first half body is made of resin, and the second half body is made of ceramic such as aluminum porcelain. It is divided into the types of. Here, the first half body is excellent in workability because the thickness of the substrate of the LED structure is as thin as about 1.0 mm and the positioning of the substrate and the support structure are complicated shapes. It is a resin molded product. The second half is made of resin when durability and workability are emphasized, and ceramic when heat dissipation and insulation are emphasized.

However, when both the first and second halves are made of resin as the material of the LED socket, the plate thickness is distorted by heat and stress is applied to the LED structure, so that the lighting life tends to be different. .. This is because, for example, when the resin molded product is distorted, the contact pressure becomes smaller and the temperature further rises accordingly, which affects the lighting life.

If the first half of the LED socket is made of resin and the second half is made of ceramic, the second half is made of ceramic and is easily broken when force is applied. For example, a lamp is used with a screw. When it is attached to a device such as a heat sink or a heat sink, it is screwed on the resin first half body side. As a result, heat conduction from the second half of the body is less likely to occur as heat conduction through the screw, and heat dissipation of the entire socket cannot be expected so much. Further, since the first half body is thin, it is easily distorted by the tightening force of the screw and the contact mechanism is easily damaged.

From the above background, an object of the present invention is to maintain an excellent heat dissipation property even if both the first half body and the second half body are resin molded products while maintaining a simple and simple structure. .. Other purposes will be clarified in the following description.

In order to achieve the above object, the invention of claim 1 is to support an LED structure 6 in which a light emitting portion 8 such as an LED element and feeding portions 9a and 9b are arranged on the upper surface of the substrate 7, as specified with reference to the drawings. In the LED socket 5, the LED socket 5 has holding means 15 and 16 capable of mounting the substrate 7 within a substantially plate thickness together with an opening 10 and a mounting hole 11, and the light emitting portion 8 projects from below the opening 10 to the top. While the substrate 7 is held by the holding means 15 and 16, the first half body 1 made of resin capable of supporting the LED structure 6, the upper opening 20 and the upper mounting hole 21 are electrically connected to the feeding portion. It has a connecting member arranging portion 25 that enables connection, and is connected to the first half body in a state where the light emitting portion is arranged in the upper opening and the upper mounting hole is located on the coaxial line with the mounting hole. A screw or the like that is sandwiched between the resin-made second half body 2 and the first half body 1 and the second half body 2 and penetrates from the upper mounting hole 21 to the mounting hole 11. It is characterized by including a heat radiating member 3 (3A) arranged so as to be in contact with the member S.

In the above invention, the mounting member is a member similar to screws and bolts. The material is preferably excellent in heat conduction like a metal or an alloy. As the heat radiating member, it is preferable that the heat conductive member is excellent in heat conduction like a metal or an alloy like the mounting member. The shape may be either a plate shape as in claim 3 or a linear shape as in claim 4.

It is more preferable that the above invention is embodied as specified in claims 2 to 5.
(1), The first half body 1 and / and the second half body have a recess for arranging the heat radiation member, and the heat radiation member is between the first half body and the second half body. A contact portion that comes into contact with the mounting member is provided on one end side, and the other end side extends to the vicinity of the connecting member arranging portion (claim 2).
(2) The heat radiating member has a plate shape and is projected from an insertion hole that allows the mounting member to penetrate from the upper mounting hole to the mounting hole and the edge of the insertion hole of the second half body. It is configured to have a tubular portion to be fitted into the upper mounting hole (claim 3).

(3) The heat radiating member has a linear shape and can be pressure-contacted with the mounting member (claim 4). This heat radiating member specifies the configuration of the modified example of FIG. The linear shape may be elongated and includes a round cross section, a flat cross section, a polygonal cross section, and the like.
(4) The second half has a recess provided between the connecting member arranging portion and the recess, and has an insulating chip made of ceramic or the like arranged in the recess. (Claim 5).

On the other hand, the invention of claim 6 is characterized in that, as the LED socket structure 50, the LED structure 6 is assembled to the LED socket 5 according to any one of claims 1 to 4.

In the invention of claim 1, both halves are made of resin as an LED socket having a first halves that support the LED structure and a second halves that have an arrangement portion for arranging connection members such as power supply terminals. Therefore, compared to ceramic products, the processing accuracy during mass production can be stably maintained and the manufacturing cost can be reduced, and the heat radiation member sandwiched between the two halves provides excellent heat dissipation. That is, the heat radiating member allows the heat generated in the electrical connecting member connected to the light emitting portion and the feeding portion to be efficiently dissipated to the outside, that is, to the applicable lamp or various fixtures, for example, through the mounting member such as a screw, thereby the resin. The best heat dissipation characteristics can be given to both half bodies of the product as a measure against heat that tends to be trapped.

In the invention of claim 2, first, since the first half body and / and the second half body have a recessed portion for the heat radiating member, the thickness dimension of the entire LED socket is almost the same as that without the heat radiating member. Can be maintained. At the same time, the heat radiating member has a contact portion that abuts on the mounting member on one end side, and the other end extends to the vicinity of the connecting member arranging portion of the second half body, so that the location where heat is most likely to be generated in the LED socket Efficiently flows from the lamp to the mounting member side, and finally heat can be efficiently dissipated to the above-mentioned applicable lamps and various fixtures via the mounting member such as a screw.

In the invention of claim 3, since the heat radiating member has a plate shape and has an insertion hole through which the mounting member is inserted and a tubular portion to be fitted into the upper mounting hole of the second half body, both the heat radiating member is provided by the mounting member. It can be tightened together with the half body.

In the invention of claim 4, since the heat radiating member has a linear shape and can be pressure-welded to the mounting member, processing accuracy is not required so much, the weight is light, and the implementation is easy.

In the invention of claim 5, since the second half body has an insulating chip arranged in a recess provided between the connecting member arrangement portion and the recess portion, the heat radiating member is due to the presence of the chip. The connection member provided in the arrangement portion is prevented from causing an electrical failure, and heat is easily flowed to the heat dissipation member side via the chip to improve the heat dissipation characteristics.

In the invention of claim 6, the LED socket structure can have the advantages and added value as mentioned in claims 1 to 5.

(A) is a perspective view of the LED socket of the present invention seen from above, and (a) is a perspective view of an LED socket structure in which an LED structure is assembled to an LED socket, as viewed from above. It is a schematic disassembled perspective view which disassembled the said LED socket structure and looked at from the upper side. The first half body constituting the LED socket is shown, (a) is an inner surface or a top view, and (b) is an outer surface or a bottom view. FIG. 3A is a schematic cross-sectional view taken along the line AA of FIG. 3A, and FIG. 3B is an explanatory view showing a state in which the LED structure is temporarily fixed to the first half body. The second half body constituting the LED socket is shown, (a) is an inner surface or a lower surface view, and (b) is an outer surface or a top view. (A) is a schematic cross-sectional view taken along the line BB of FIG. 5 (a), and FIG. 5 (b) is a schematic cross-sectional view taken along the line CC of FIG. 5 (a). (A) is a schematic configuration diagram for arranging a heat radiating member and a chip on the second half body and explaining a procedure for assembling the power supply terminal, and (b) is a top view of a single heat radiating member constituting the LED socket. , (C) is the X arrow view of (b). A single power supply terminal (connecting member) constituting the LED socket is shown, (a) is a top view, and (b) is a Y arrow view of (a). A modified example in which the heat radiating member constituting the LED socket is changed is shown, FIG. 7A is a configuration diagram corresponding to FIG. 7A, and FIG. 7B is an enlarged top view of the heat radiating member alone. As the LED socket and socket structure of Patent Document 1, (a) shows FIG. 2 (a) of Document 1, and (b) shows FIG. 1 (b) of Document 1. As the LED socket and socket structure of Patent Document 1, (a) and (b) show FIG. 12 of Document 1.

Hereinafter, examples of the embodiment of the present invention will be described with reference to the drawings. In this description, the member configurations of the LED socket and the LED socket structure will be described, and then the operating features and the modified examples will be described in this order.

(Member Configuration) The LED socket structure 50 shown in FIGS. 1 and 2 is a structure in which the LED structure 6 is assembled to the LED socket 5 to which the present invention is applied, and is attached to a mounting portion such as a lamp or a lighting device. It is attached by a plurality of screws S. Here, the LED structure 6 is a known commercially available product, in which a light emitting portion 8 such as an LED element and a feeding portion 9 are arranged on the upper surface of a substrate 7 made of aluminum or the like. The power supply unit 9 is provided at two locations for receiving external power supply to the terminals of the lead wires 45 and 46 connected to the external power supply via the power supply terminal 4.

Further, a heat sink or the like may be adopted for the mounting portion on the lighting device side to which the LED socket structure 50 is mounted so as to have excellent heat dissipation characteristics. A screw S such as a bolt is a typical mounting member, but instead of the screw S, a metal connecting rod and a mounting means such as a nut may be used. Note that FIGS. 1 and 2 show nuts N corresponding to each screw S. This nut N is shown for convenience, and is actually omitted by forming a female screw to be screwed with the screw S in the mounting portion, or screwed into the screw portion protruding from the insertion hole provided in the mounting portion. It is made to fit, or it is fixed to the mounting portion in advance and the screw S is screwed there.

As shown in FIG. 2, the LED socket 5 has a resin first half body 1 capable of supporting the LED structure 6 and a resin second half body 2 connected in a state of being overlapped with the first half body 1. A heat radiating member 3 sandwiched between the first half body 1 and the second half body 2, two feeding terminals 4, a leaf spring (not shown), and two insulating chips 39 are provided. ..

Of these, the first half body 1 is an annular injection-molded product as shown in FIGS. 2 to 4, and is provided on the outer peripheral side of the opening 10 provided in the central portion and the opening 10 and penetrates vertically. Multiple (two in this example) mounting holes 11, multiple (two in this example) connecting pieces 12 protruding from the upper surface 1a, multiple (four in this example) bosses 13, and two outer circumferences. A positioning portion 15 and an elastic holding piece 16 are integrally provided as holding means for positioning and holding the substrate 7 provided on the edge side of the opening 10 in the cutout portion 14 provided at the location and the lower surface 1b.

The opening 10 has a shape capable of projecting around the light emitting portion 8 and the feeding portion 9 toward the upper surface 1a. Each mounting hole 11 is a circular hole provided on a concentric circle. Each connecting piece 12 has a claw 12a provided on the outer peripheral side of the upper surface and protruding inward of the tip. Each boss 13 is provided between the opening 10 and the outer periphery. The notch portion 14 is provided at a position corresponding to the lead-out position of the lead wires 45 and 46 which are connected to the power supply terminal 4 incorporated in the second half body 2 described later and are drawn out to the outside. Reference numerals 19a and 19b indicate whether the feeding portion 9 of the LED structure is on the anode side or the cathode side.

The positioning portion 15 is provided on the lower surface 1b as a step so that the substrate 7 can be positioned within the wall thickness of the first half body 1 by receiving the two opposite corners of the substantially rectangular substrate 7 at the corresponding steps. To do. On the other hand, the elastic holding piece 16 is provided on the other opposite edge of the opening 10 and protrudes in a downwardly inclined state, and when a pushing force in the inward direction is received from the downwardly inclined state, the elastic holding piece 16 is horizontally or slightly inward. It can be switched to the tilted state. Further, each elastic holding piece 16 is formed with an L-shaped step 16a capable of receiving the substrate 7 on the tip side.

FIG. 4B shows a state in which the LED structure is temporarily fixed to the first half body. In this structure, for example, when the substrate 7 is placed on the corresponding positioning portion 15 on one side and the other side of the substrate 7 is pushed in the vertical direction from the state where the substrate 7 is placed on the steps 16a on both sides, each elastic holding piece 16 is switched to a horizontal or slightly inwardly inclined state. In that state, the substrate 7 of the LED structure 6 is sandwiched between the facing surfaces of both steps 16a and temporarily fixed. The recess 2c1 of FIG. 5A provided in the second half body is a space for escape so that each elastic holding piece 16 does not inadvertently hit when switched to the inward inclined state. ..

That is, in this structure, the substrate 7 is temporarily fixed by using the positioning portion 15 and the elastic holding piece 16, but the operation procedure is a pushing method in which the substrate 7 is temporarily fixed while being pressed in the vertical direction, and has an LED structure as in Patent Document 1. The substrate 7 of the LED structure can be held more accurately and quickly than the structure in which the substrate of the body is sandwiched by the cantilever elastic support portions (reference numeral 1232 in FIG. 11B) facing each other in the horizontally direction. In this structure, the LED socket structure 50 is designed to be screwed to the mounting portion of a device such as a lamp by a plurality of screws S so that the LED structure 6 is also in the final fixed state.

Reference numeral 18 is a shallow recess provided at two locations. Each recess 18 allows the upper portion of the corresponding power supply terminal 4 incorporated in the second half body 2 to escape. Reference numerals 19a and 19b are stamped on the lower surface 1b of the first half body to prevent erroneous assembly by making it possible to know the direction of the corresponding power feeding unit 9 when assembling the LED structure 6 to the first half body 1.

The second half body 2 is an annular injection-molded product that is overlapped with the first half body 1 as shown in FIGS. 2 and 5 to 7, and is an opening 20 provided in the central portion and an opening in the lower surface 2a. The pedestal 2d and the recess 2c provided between the recesses 2c and the recesses 2c and the opening 20 provided on the outer peripheral side of the 20 and where the heat radiating member 3 is arranged to receive the seat 41 of the power feeding terminal 4. There are mounting holes 21 and bosses 26 that penetrate vertically, cutouts 22 provided at two locations around the outer circumference, four recesses 23 into which the bosses 13 are fitted, and lead wires 45 and 46. Two grooves 24 to be arranged, a recess 25 leading to the groove 24, an engaging groove 25a on the back side of the recess 25, two engaging grooves 25b provided around the pedestal 2d, and a pedestal 2d. Small recess 25c provided on the opposite side of the recess 25
And a chip recess 29 provided between each pedestal 2d and the recess 2c. In addition, reference numeral 2c1 is a recess formed in a part of the lower surface 2a between the opening 20 and the recess 2c.

The opening 20 has a substantially circular shape that exposes the light emitting portion 8 from the bottom to the top, and an edge portion is provided on the upward inclined portion 20a. The recessed portion 2c is provided along the outer peripheral side and has a depth corresponding to the thickness of the heat radiating member 3. The pedestal 2d is lower than the lower surface 2a and slightly higher than the recessed portion 2c. The mounting hole 21 is provided on the coaxial line with the mounting hole 11. The boss 26 is fitted into the hole 34 of the heat radiating member. The cutout portion 22 has a rib 22a projecting from the lower edge, and the upper surface 2b side of the rib 22a is formed as a step 22b. The claw 12a of the connecting piece 12 engages with the step 22b. Each recess 23 is provided on a concentric circle.

Each groove 24 is overlapped with the corresponding notch portion 14 of the first half body in a laminated state of both halves 1 and 2, and the lead wire 45 or 46 can be led out from the half body to the outside. The pedestal 2d holds the power feeding terminal 4. The base 40 of the power feeding terminal 4 is arranged in the recess 25. The engaging grooves 25a and 25b engage with the corresponding locking portions 40a and 42 of the feeding terminal 4. In the small recess 25c, a leaf spring (not shown) that presses the connection portion 43 of the power feeding terminal 4 upward from below is arranged. An insulating tip 39 is fitted and arranged in the recess 29. The recess 29 is provided close to a part of the recess 2c. Then, it is preferable that the tip 39 fitted in the recess 29 is brought into contact with the heat radiating member 3 arranged in the recess 2c. The material of the chip 39 is preferably made of ceramic having excellent insulating properties, but other insulating materials may be used.

Here, the heat radiating member 3 is a pressed product made of metal as shown in FIGS. 7 (b) and 7 (c), and has an insertion hole 31 arranged on the coaxial line with the mounting holes 11 and 21 and a second half body. It has a notch 32 into which the rib 22a of the first half is fitted, a through hole 33 in which the corresponding boss 13 of the first half is fitted, and a through hole 34 into which the boss 26 of the second half is fitted. There is. Further, the heat radiating member 3 has a plate shape and has a tubular portion 30 which is projected from the edge portion of the insertion hole 31 and is fitted into the upper mounting hole 31 of the second half body. The tubular portion 30 is formed so as to project toward the upper surface 3a side of the heat radiating member 3 by burring, and is fitted into the mounting hole 21 of the second half body as shown in 7 (a). In this structure, when the LED socket 5 is connected and integrated with both halves 1 and 2 and attached to a lamp or various devices with screws S or the like, the heat radiating member 3 is attached to both halves due to the presence of the tubular portion 30. It can be firmly tightened together with 1 and 2.

The power supply terminal 4 is a pressed product of a conductive plate material, and is connected to a vertically arranged base 40, a locking portion 40a provided on the tip side of the base 40, and the tip side of the base 40 as shown in FIG. A seat 41 that is received by the pedestal 2d, two locking portions 42 that are bent from the edge of the seat 41, a connecting portion 43 that is raised diagonally upward from the front side of the seat 41, and a connecting portion. It integrally has a regulation wall portion 44 which is on the back surface of the tip of 43 and is projected on both sides. Reference numeral 43a is a contact portion that protrudes toward the upper surface side of the connecting portion 43 and comes into contact with the feeding portion 9.

The leading end side core wire of the lead wire 45 or 46 is bonded to the inner side surface of the base portion 40 by soldering or the like. Then, in the above power supply terminal 4, the locking portion 40a is press-fitted into the engaging groove 25a and each locking portion 42 is press-fitted into the corresponding engaging groove 25b in a state where the seat portion 41 is arranged on the pedestal 2d. By doing so, it is attached to the second half body 2. In that case, a leaf spring (not shown) is incorporated in the small recess 25c. The leaf spring presses the connecting portion 43 downward while the lower portion is positioned at the small recess 25c and the upper portion is positioned between the two restricting wall portions 44 protruding to the back side of the connecting portion 43. This ensures that the contact portion 43a is in contact with the feeding portion 9.

As described above, the first half body 1 is connected to the second half body 2 in which the heat radiating member 3 and the power feeding terminal 4 urged by the leaf spring are arranged. That is, both halves 1 and 2 are fitted with the plurality of bosses 13 of the first halves and the corresponding recesses 23 of the second halves, and the claws 12a and the second halves of the connecting pieces of the first halves. It is connected by engaging with the step 22b of.

(Operating features) The advantages of the above LED socket and LED socket structure will be clarified.
(A) The above LED socket 5 or LED socket structure 50 is a type composed of a first half body 1 that supports the LED structure 6 and a second half body 2 that has an arrangement portion for arranging the power supply terminal 4. Since both halves 1 and 2 are made of resin, the processing accuracy at the time of mass production can be stably maintained and the manufacturing cost can be reduced as compared with those made of ceramic. At the same time, it has excellent heat dissipation characteristics due to the heat dissipation member 3 sandwiched between the two halves 1 and 2 and having excellent heat conduction. That is, the heat radiating member 3 acts so that the heat generated in the light emitting unit 8, the power feeding unit 9, the power feeding terminal 4, etc. is efficiently dissipated to the outside, that is, to the applicable lamp or various fixtures, for example, through the screw S, thereby being made of resin. The best heat dissipation characteristics can be given to both halves 1 and 2 as a measure against heat that tends to be trapped.

(A) In the LED socket 5 or the LED socket structure 50, since the first half body 1 has a recessed portion 2c in which the heat radiation member 3 is arranged, the thickness dimension of the entire LED socket does not have the heat radiation member 3. Can be maintained at the same thickness as the case. At the same time, since the heat radiating member 3 has a tubular portion 30 that abuts on the screw S on one end side and the other end side extends to the vicinity of the power supply terminal 4 arranged on the second half body 2 side, the LED socket structure 50 heats up. Efficiently flows from the place where is most likely to occur to the mounting screw S side, and finally, heat can be efficiently dissipated to the applicable lamp and various fixtures via the screw S.

(C) The LED socket 5 or the LED socket structure 50 has an excellent appearance for lighting because the first half body 1 and the second half body 2 are substantially annular. At the same time, since the heat radiating member 3 has a plate shape and has an insertion hole 31 through which the screw S is inserted and a tubular portion 30 fitted into the upper mounting hole 21 of the second half body 2, the heat radiating member 3 is formed by the screw S. It can be tightened together with both halves 1 and 2.

(D) The LED socket 5 or the LED socket structure 50 has an insulating chip 39 in which the second half body 2 is arranged in a recess 29 provided between the power feeding terminal 4 and the recess 2c. Therefore, the heat radiating member 3 is prevented from causing an electrical failure due to the presence of the chip 29, and heat is easily flowed to the heat radiating member 3 side via the chip 29 to improve the heat radiating characteristics.

(Heat dissipation characteristics) The present inventor uses the LED socket 5 as an invention component a in which both halves are made of resin, a power supply terminal, and a heat radiation member, and an invention component a1 in which the chip 39 is added, as a conventional LED socket. Conventional component b consisting of both halves made of resin and power supply terminal, conventional component c consisting of both halves made of resin, second half body made of alumina porcelain, and power supply terminal as a conventional LED socket The following simple test was conducted to investigate the superiority and inferiority of the heat dissipation characteristics.

The test method is to press the tip of the thermocouple under the power supply terminal 4 and pick up the screw (M3) S with your fingertips in a windless state from when the ambient temperature is around 15 ° C to transmit the body temperature (36 ° C). I examined. Specifically, the temperature rise 5 minutes after the screw S was picked was examined and the superiority or inferiority was compared. The first half, the second half, and the power supply terminal are the same size. For each component, the distance between the screw S and the power supply terminal 4 was set to be the same, and the same environment was maintained as much as possible in the test. The resin material used was polybutylene terephthalate with 30% glass fiber.

The test result was an average value of 5 times, and the temperature of the invention component a increased by 3.4 ° C and that of the invention component a1 increased by 3.8 ° C. On the other hand, the temperature of the conventional component b increased by 2.0 ° C, and that of the conventional component c increased by 2.8 ° C. From this result, it can be inferred that the invention components a and a1 are considerably superior to the conventional components b and c in terms of heat dissipation characteristics or heat conduction characteristics, and it can be seen that it is more preferable to add the chip 39.

(Modification Example) FIG. 9 shows an example in which the heat dissipation member is changed. In this description, the same members and parts as in the above embodiment are designated by the same reference numerals, duplicate explanations are omitted, and only the changes will be described in detail. That is, the changes are in the configuration of the heat radiating member 3A and the configuration in which another boss 27 is added together with the boss 26 to the recessed portion 2c of the second half body.

First, the heat radiating member 3A is formed of a wire rod such as a torsion spring, and has a contact portion 38 provided on one end side and press-contacting with the mounting member S and a contact portion 38 provided on the other end side near the arrangement portion 25, that is, a recess 29. It has an abutting portion 37 that abuts on the tip 39 arranged in the abutting portion 37, and a bent portion 36 provided between the abutting portion 37 and the abutting portion 38. Then, the heat radiating member 3A is assembled on the recessed portion 2c in such a manner that the bent portion 36 is positioned by a part of the stepped end surface at the boundary with the lower surface 2a and the bosses 26 and 27 as shown in the figure. Then, the contact portion 37 is in pressure contact with the chip 39, and a part of the contact portion 38 is arranged inside the insertion hole 31. After that, in this modification, when the screw S is inserted from the mounting hole 21 of the second half body into the mounting hole 11 of the first half body, it hits a part of the contact portion 38, and the contact portion 38 hits each mounting hole. It is elastically displaced so as to escape to the outside, and is finally maintained in a state of being pressed against the screw S.

In the above modified example, the description in the latter half of (c) above is changed as follows. That is, since the heat radiating member 3A has a linear shape and can be pressure-welded to the screw S, the processing accuracy is relaxed and the weight is reduced, and as a result, the implementation becomes easy.

The present invention is not limited to the LED structure, the LED socket, and the LED socket structure shown in the above-mentioned embodiment and modification. The present invention only needs to include the technical elements specified in the claims, and the details can be variously changed as needed. As an example, in the morphological example and the modified example, a recess for escape was provided on the second half body side so that the overall thickness would not be increased by the heat radiation member, but this recess was placed on the first member side. It may be provided or provided on both halves.

Further, the holding means for holding the substrate of the LED structure is not limited to the holding means shown in the form example, and other positioning structures, engaging structures, joining structures, and the like can be appropriately adopted. Although the insulating chip can be omitted, it is preferable to add it in order to prevent electrical damage and improve heat dissipation characteristics. The material may be other than ceramic as long as it is insulating. The power feeding terminal and the leaf spring can also be deformed in order to maintain the shape of the second half body and the good contact state with the power feeding portion, for example.

1 ... First half (10 is an opening, 11 is a mounting hole)
2 ... Second half (20 is the upper opening, 21 is the upper mounting hole, 25 is the placement part)
3 ... Heat dissipation member (30 is the cylinder part that is the contact part, 31 is the insertion hole)
3A ... Heat dissipation member (36, 37 regulation part, 38 is contact part)
4 ・ ・ ・ ・ ・ Power supply terminal (connecting member)
5 ・ ・ ・ ・ ・ LED socket 6 ・ ・ ・ ・ ・ LED structure 7 ・ ・ ・ ・ ・ Board 8 ・ ・ ・ ・ ・ Light emitting part 9 ・ ・ ・ ・ ・ Power supply part 12 ・ ・ ・ ・ ・ ・ Connecting piece (connecting means) )
16 ... Elastic holding piece (holding means)
2c ・ ・ ・ ・ Recessed part 29 ・ ・ ・ ・ Recessed part for chip 39 ・ ・ ・ ・ Insulating chip 50 ・ ・ ・ ・ LED socket structure S ・ ・ ・ Screw (mounting member)

Claims (6)

In an LED socket for supporting an LED structure in which a light emitting portion such as an LED element and a feeding portion are arranged on the upper surface of a substrate.
The LED structure has a holding means capable of mounting the substrate within a substantially plate thickness together with an opening and a mounting hole, the light emitting portion protrudes from the bottom to the top of the opening, and the substrate is held by the holding means. The first half of the resin that can support the body,
It has an arrangement part for a connecting member that can be electrically connected to the power feeding part together with the upper opening and the upper mounting hole, the light emitting part is arranged in the upper opening, and the upper mounting hole is coaxially connected to the mounting hole. The resin-made second half that is connected to the first half while being located in
It is provided with a heat radiating member that is sandwiched between the first half body and the second half body and is arranged so as to be in contact with a mounting member such as a screw that penetrates from the upper mounting hole to the mounting hole. An LED socket characterized by being present. The first half body and / and the second half body have a recess for arranging the heat radiation member, and the heat radiation member is located between the first half body and the second half body and is attached to one end side. The LED socket according to claim 1, wherein the LED socket has a contact portion that comes into contact with the member, and the other end side extends to the vicinity of the connecting member arrangement portion. The heat radiating member has a plate shape and is projected from an insertion hole that allows the mounting member to penetrate from the upper mounting hole to the mounting hole and an edge portion of the insertion hole into the upper mounting hole of the second half body. The LED socket according to claim 1 or 2, wherein the LED socket has a tubular portion to be fitted. The LED socket according to claim 1 or 2, wherein the heat radiating member has a linear shape and can be pressure-contacted with the mounting member. The second half body is characterized in that a recess is provided between the connecting member arranging portion and the recessed portion, and the second half body has an insulating chip made of ceramic or the like arranged in the recess. The LED socket according to claim 2 .
An LED socket structure according to any one of claims 1 to 5, wherein the LED structure is assembled to the LED socket.

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