JP2005038798A - Lighting device and lamp module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device excellent in heat radiation which efficiently radiates heat at the time when the lamp module is lighted. <P>SOLUTION: The lighting device comprises a lamp module 300 equipped with LED elements on the surface of a substrate 310 and a socket 200 which has a receiving port 211 for receiving the lamp module 300 on the front surface side. A receiving bottom 210a of the socket 200 for receiving the lamp module 300 has a nearly same plane shape as the rear face of the substrate 310 of the lamp module 300, and the socket 200 is equipped with a power feeding terminal 220d which presses the lamp module 300 to the receiving bottom 210a when the lamp module 300 is rotated with an axis of a direction parallel to the receiving direction in the state it is received through the receiving port 211. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lighting device including a lamp module having a light emitting element on a surface of a substrate, and a socket having a receiving port for receiving the lamp module on a front side, and a lamp module used in the device.

  Conventionally, light-emitting diodes (hereinafter simply referred to as “LED elements”) are expected to be a new light source with higher efficiency and longer life than incandescent and halogen light bulbs, and studies on lighting devices using LED elements are in progress. It has been.

  As such an illuminating device, there is one that includes a lamp module having a plurality of LED elements on the surface of a substrate and a socket having a receiving port on the front side for receiving the lamp module. This lamp module has, for example, a protruding board-side connecting portion on the back surface of the substrate, and one socket also has, for example, a protruding power feeding portion on the receiving base for receiving the lamp module, and the lamp module is attached to the socket. When this is done, the board-side connecting part of the lamp module and the power feeding part of the socket come into contact with each other (see Patent Document 1).

On the other hand, it is well known that LED elements generate heat when they are turned on. In the above-described lighting device, a heat sink is provided by providing a heat sink or a Peltier element on the back side of the substrate or a fan on the back side of the substrate.
JP 2002-304902 A

  However, although the above-described lighting device takes heat dissipation measures into consideration, there are problems that the heat dissipation is insufficient, the cost of the lighting device increases, or the lighting device becomes large-scale. Not right.

  In other words, even if a heat sink is provided on the back side of the substrate, the heat from the heat sink is not sufficiently dissipated, and if Peltier elements are used, the cost will increase by these elements, and if a fan is provided on the back side of the substrate Not only will the cost of the fan increase, but the size of the device will also increase.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an illumination device with excellent heat dissipation and a lamp module used in the illumination device.

  In order to achieve the above object, an illumination device according to the present invention includes a lamp module having a light emitting element on a surface of a substrate, and a socket having a receiving port on the front side for receiving the lamp module, and the lamp module of the socket is provided. The receiving base has substantially the same surface shape as the back surface of the lamp module substrate, and the socket has the lamp module received through the receiving port and is parallel to the receiving direction. It is characterized by comprising pressing means for pressing the lamp module against the socket bottom when rotated. For this reason, the heat at the time of light emission of a light emitting element can be transmitted over a wide area from a board | substrate to the socket side.

  In the lighting device, the socket has a plurality of projecting portions that project to the inside of the receiving port when the socket is viewed from the front side, and the lamp module has a receiving port when the socket is viewed from the front side. In order to correspond to the shape, the projecting portion has a notch portion opposite to the projecting portion, and the pressing means is provided on the back surface of the projecting portion, or the socket is connected to the socket. When viewed from the front side, the lamp module has a plurality of projecting portions that project to the inside of the receiving port and can be elastically deformed in the receiving direction, and the lamp module corresponds to the shape of the receiving port when the socket is viewed from the front side. As described above, the projecting portion has a notch portion having a shape opposite to the projecting portion, and the pressing means is constituted by the projecting portion. At this time, there are two or more types of shapes of the plurality of overhang portions.

  Further, in the lighting device, when the socket rotates in a state in which the lamp module is received, an overhang portion that projects inward of the receiving port when the socket is viewed from the front side in conjunction with the rotation. And the protruding means is provided with the pressing means. Alternatively, the socket is linked to the rotation of the socket when the lamp module rotates with the lamp module received. When viewed from the front side, there are a plurality of projecting portions that project to the inside of the receiving port and can be elastic in the receiving direction, and the pressing means is constituted by the projecting portions.

  At this time, the lamp module has a notch portion on an outer peripheral edge thereof, and the projecting portion includes an engaging portion that engages with the notch portion when the lamp module is received. It is characterized by projecting to the inside of the receiving port in conjunction with the movement of the engaging portion accompanying the rotation. And the said notch part has multiple, The shape has two or more types, It is characterized by the above-mentioned.

The lamp module includes a terminal connected to the light emitting element on a surface of the substrate,
The lighting device according to any one of claims 2 to 8, wherein a portion of the pressing means that contacts the lamp module serves as a power supply terminal for supplying power to the lamp module.

  Further, the pressing means is provided at substantially equal intervals along the circumferential direction of the receiving port. Further, the substrate includes a metal plate on the back surface, and the lamp module is held by the socket. In the state, the metal plate is in contact with the bottom of the socket.

  On the other hand, the shape of the lamp module in plan view is substantially circular or polygonal, and further includes a radiator that is thermally coupled to the socket. . The radiator is a cap portion that collects light emitted from the lamp module in a direction perpendicular to the substrate on the front side of the substrate.

In addition, a lighting circuit unit for lighting a light emitting element of the lamp module held in the socket is provided on the socket side.
Moreover, the lamp module according to the present invention is used in the above-described lighting device.

  An illumination device according to the present invention includes a lamp module having a light emitting element on a surface of a substrate, and a socket having a receiving port for receiving the lamp module on a front side, and a receiving bottom for receiving the lamp module of the socket includes the lamp module. The socket has substantially the same surface shape as the back surface of the substrate, and the socket is configured such that the lamp module is rotated around a direction parallel to the receiving direction in a state where the lamp module is received through the receiving port. A pressing means for pressing the module against the socket bottom is provided.

  For this reason, the heat | fever generate | occur | produced at the time of light emission of the light emitting element of a lamp module can be transmitted to a socket from the back surface of a board | substrate. Thus, for example, the heat generated during light emission is transferred from the socket to the entire device and can be released from the entire device. As a result, it is possible to efficiently release heat without increasing the cost and increasing the size of the apparatus.

<First Embodiment>
Hereinafter, the lighting apparatus according to the first embodiment of the present invention will be described with reference to the drawings.

1. FIG. 1 is an overall view of the lighting device, and a part of the lighting device is cut away so that the inside can be seen.

  The lighting device 1 uses an LED element as a light source, and a lamp module having the LED element on the surface of the substrate is detachably attached to the socket. As shown in the figure, the lighting device 1 is, for example, a suspension type device, and includes a device main body 10, a cable 20 for supplying power to the device main body 10, and a rosette provided on the ceiling 5, for example. 6 is provided with a rosette socket 30 for suspending the apparatus main body 10 via a cable 20.

  The apparatus main body 10 includes a cap portion 100 having a flat bottom 110 at a substantially center, a socket 200 disposed on the inner bottom of the cap portion 100, and an LED of the lamp module 300 disposed on the outer bottom of the cap portion 100. The lamp module 300 is detachably attached to the socket 200. The lamp circuit 300 includes a lighting circuit unit 400 for lighting the element and a case 120 covering the lighting circuit unit 400.

  The inner peripheral surface of the shade portion 100 is a reflective surface, and reflects light emitted from the lamp module 300 so as to irradiate a desired direction, for example, a lower portion. This reflecting surface is formed, for example, by applying white paint or alumina particles.

  The lighting circuit unit 400 adjusts the voltage value of the DC power rectified and smoothed by the rectifying and smoothing circuit for rectifying and smoothing the AC power supplied from the commercial power supply via the cable 20 into DC power. And a constant current circuit for supplying a constant current to the lamp module 300.

  Electrical components such as a rectifying / smoothing circuit and a voltage adjusting circuit constituting the lighting circuit unit 400 are mounted on the substrate 401. The substrate 401 is separated from the bottom 110 of the shade portion 100 in consideration of heat generated when the LED element emits light. In addition, description about the electrical components which comprise each circuit etc. is abbreviate | omitted.

2. Socket and Lamp Module FIG. 2 is a view showing an attached state in which the lamp module is attached to the socket, and a part of the socket is cut away so that the state of the lamp module inside can be seen. . 3 is a perspective view of the lamp module and the socket, and FIG. 4 is a view of the attachment state in which the lamp module is attached to the socket as viewed from the front side.

The lamp module 300 includes one or more LED elements, and a substrate 310 on which the LED elements are mounted as shown in FIGS. 2 and 3, and is formed on the surface of the substrate 310 and is electrically connected to the LED elements. Terminal 361a, 361b, 361c, 361d connected to the terminal. In the present embodiment, for example, there are four terminals. However, when referring to the entire terminal instead of the respective terminals, the reference numeral “361” is used. Notch portions 312a, 312b, 312c, and 312d that are recessed are formed, and terminals 361a, 361b, 361c, and 361d are provided next to one of the notch portions 312a, 312b, 312c, and 312d in the circumferential direction. It has been. In this embodiment, for example, there are four notches, but the reference numeral “312” is used when referring to the entire notch instead of each notch.

  One socket 200 has a hollow disk shape and includes a receiving port 211 for receiving the lamp module 300 on the front side thereof, and when the socket 200 is viewed from the front side, the notches 312a and 312b of the lamp module 300 are provided. , 312c, and 312d are provided with overhanging portions 212a, 212b, 212c, and 212d that project to the inside of the receiving port 211. In the present embodiment, for example, there are four overhang portions corresponding to the number of the notch portions 312. However, when referring to the entire overhang portion instead of the overhang portions, the reference numeral “212” is used. .

  Power supply terminals 220a, 220b, 220c, and 220d that are electrically connected to the terminals 361 of the lamp module 300 when the lamp module 300 is attached to the back surfaces of the overhang portions 212a, 212b, 212c, and 212d (FIG. 2). In FIG. 3, only 220a appears, and in FIG. 3, only 220d appears.). In addition, although there are four power supply terminals, for example, the symbol “220” is used when referring to the entire power supply terminal instead of the respective power supply terminals.

  The socket 200 receives the lamp module 300 from the receiving port 211, and when the lamp module 300 is rotated around the direction parallel to the receiving direction in this state, the lamp module 300 is pressed against the receiving bottom 210 a of the socket case 200. Attach with.

  Now, each of the lamp module 300 and the socket 200 will be described in detail.

(1) Lamp module 300
(A) of FIG. 5 is the figure which looked at the lamp module from the front side, (b) is the figure which looked at the AA cross section of (a) from the arrow direction.

  As shown in FIG. 5A, the substrate 310 of the lamp module 300 has, for example, a disk shape. The central part of the substrate 310 is a mounting part 311 for mounting the LED element.

  On the outer peripheral side of the mounting portion 311, a notch portion 312 for alignment when inserted into the receiving port 211 of the socket 200, and a power supply terminal of the socket 200 when connected to the LED element and attached to the socket 200 And a terminal 361 that receives power from 220. In the embodiment, the terminals 361b and 361d are for the positive electrode, and the terminals 361a and 361c are for the negative electrode.

  On the mounting portion 311 of the substrate 310, for example, seven LED elements (indicated by square broken lines in FIG. 5 are indicated by 350 a, 350 b, 350 c, and “350” "Is used.) Is implemented. As shown in FIG. 5A, these LED elements 350 are arranged at positions that are each corner of a substantially regular hexagon and a position that is the center of the hexagon. It should be noted that the center of the LED element 350b disposed at the approximate center of the mounting portion 311 and the center of the substrate 310 substantially coincide.

  In the mounting portion 311 of the substrate 310, as shown in FIGS. 5A and 5B, in addition to the LED element 350, a reflector 320 having a through hole at a position corresponding to each LED element 350, The portion corresponding to the LED element 350 is a hemispherical lens 331 (when a lens corresponding to each LED element 350 is displayed, an alphabet at the end of the code of the LED element is added and displayed). A lens plate 330 is fixed to the surface of the reflection plate 320.

  FIG. 6 is an enlarged view of a portion B in FIG.

The substrate 310 includes, for example, an insulating layer 314 composed of three layers of insulating plates 315, 316, and 317 and a metal layer 318 that is in close contact with the back surface of the insulating layer 314, as shown in FIG. For each of the insulating plates 315, 316, and 317, for example, a ceramic plate whose main material is AlN is used. For example, Al ₂ O ₃ , BN, MgO, SiC, or the like may be used as a material other than AlN.

  On the other hand, for example, an aluminum plate is used for the metal layer 318. Note that the bonding between the insulating plates 315, 316, and 317 and the bonding between the insulating layer 314 (third insulating plate 317) and the metal layer 318 are performed through an adhesive layer, for example.

  Here, each of the three insulating plates is referred to as a first insulating plate 315, a second insulating plate 316, and a third insulating plate 317 from the surface layer.

  As shown in FIG. 6, for example, copper wiring patterns Pn and Pp for supplying power to the LED element 350 a are formed on the insulating layer 314. In the present embodiment, for example, a double-sided electrode type element is used as the LED element 350 mounted on the substrate 310, and as shown in FIG. 6, a wiring pattern for the anode electrode is formed on the surface of the second insulating plate 316. Pp and a wiring pattern Pn for the cathode electrode are formed on the surface of the third insulating plate 317, respectively.

  Note that through holes 315b and 316b are formed in the first insulating plate 315 and the second insulating plate 316 in order to connect the LED element 350a to the wiring pattern Pn on the third insulating plate 317, respectively. In FIG. 6, the vicinity of the LED element 350a is enlarged and the wiring patterns Pn, Pn and the like for the LED element 350a have been described, but the same applies to the other LED elements 350.

  7A is a view of the substrate before mounting the LED element as viewed from the front side, FIG. 7B is a view of the state where the first insulating plate is removed as viewed from the front side, and FIG. 7C is the first and second views. It is the figure which looked at the state which removed the insulating board from the front side.

  First, as described above, the four terminals 361a, 361b, 361c, and 361d are formed on the first insulating plate 315 disposed as the surface layer of the insulating layer 314, and the LED element 350 is mounted thereon. For this purpose, a through hole 315b (see FIG. 6) is formed. Since the through hole 315b is larger than the through hole 316b formed in the second insulating plate 316, the through holes 315b and 316b appear as shown in FIG.

  Next, a wiring pattern Pp connected to the anode electrode of the LED element 350 is formed on the second insulating plate 316 (see FIG. 7B) disposed as an intermediate layer of the insulating layer 314. The wiring pattern Pp is connected to positive electrode terminals 361b and 361d formed on the surface of the first insulating plate 315 via, for example, through holes 319a and 319a.

  Finally, a wiring pattern Pn connected to the cathode electrode of the LED element 350 is formed on the third insulating plate 317 (see FIG. 7C) disposed as the back layer of the insulating layer 314. The wiring pattern Pn is connected to the electrode terminals 361a and 361c formed on the first insulating plate 315 via, for example, through holes 319b and 319b.

  The wiring patterns Pp and Pn are subjected to nickel plating and gold plating on the copper surface. The nickel and gold plating is performed to prevent copper oxidation.

  Next, the LED element 350 described in the present embodiment is a double-sided electrode type as described above, and is, for example, InGaN using a SiC substrate. In the LED element 350, for example, as shown in FIG. 6, the cathode electrode on the lower surface is die-bonded to the wiring pattern Pn on the third insulating plate 317 by silver paste or the like, and the anode electrode on the upper surface is the second insulating plate 316. Wire bonding is performed on the upper wiring pattern Pp via a gold wire 351. Although the LED element 350a has been described here, the other LED elements 350 are similarly mounted.

  As shown in FIG. 5B and FIG. 6, a reflection plate 320 is attached to the surface of the mounting portion 311 in the insulating plate 310. For example, an aluminum plate is used as the reflection plate 320. The through-hole 321 drilled in the reflector 320 has a cone shape with a large diameter on the lens 330 side. The peripheral surface of the through hole 321 may be mirror-finished or coated with white paint in order to reflect light emitted from the LED element 350 in a predetermined direction.

As shown in FIG. 6, the through hole 321 of the reflection plate 320 is filled with resin so as to cover the internal LED element 350 a (the filled and cured resin is referred to as a resin body 340). In the present embodiment, since InGaN is used for the LED element 350, a phosphor for converting blue light emitted from the LED element 350 into white light, for example, (Sr, Ba) _2. SiO ₄ ; Eu ²⁺ type or YAG type phosphor may be mixed.

  As shown in FIG. 6, the above-described lens plate 330 is fixed to the surface of the reflection plate 320 via an adhesive layer 332, for example. The lens plate 330 is made of, for example, an epoxy resin having translucency, and is formed in advance so that lenses (331a, 331b, 331c) can be formed at the positions of the LED elements 350.

(2) Socket FIG. 8A is a view of the socket viewed from the front side, and FIG. 8B is a view of the CC cross section of FIG.

  As shown in FIGS. 8A and 8B, the socket 200 has a power supply terminal 220 that is electrically connected to the terminal 330 of the lamp module 300 when the lamp module 300 is attached to the back surface of the overhanging portion 212. I have.

  In addition to the power supply function to the lamp module 300, the power supply terminal 220 also has a function of pressing the lamp module 300 against the receiving base 210a (corresponding to the pressing means of the present invention). By this pressing, the socket 200 can attach (hold) the lamp module 300 in the socket 200. The power supply terminal 220 is provided at a position that is substantially symmetrical with respect to the center of the receiving port 211.

  Details of the portions related to the terminal 316 of the lamp module 300 and the power supply terminal 220 of the socket 200 will be described in the next section (3).

  The socket 200 includes a receiving port 211 on the front side so as to receive the lamp module 300 from the opening side (downward in FIG. 1) of the cap portion 100. As shown in FIG. 4 and FIG. 8A, the receiving port 211 has a substantially circular shape corresponding to the shape of the lamp module 300. The notch portions 312a, 312b, 312c, Portions corresponding to 312d are overhanging portions 212a, 212b, 212c, and 212d that protrude toward the center of the receiving port 211.

(3) Relationship between Lamp Module and Socket First, reception of the lamp module 300 in the socket 200 will be described.

  Each of the projecting portion 212 of the socket 200 and the cutout portion 312 of the lamp module 300 is configured in a shape corresponding to each other.

  For this reason, if the notch 312 of the lamp module 300 and the projecting portion 212 of the socket 200 are aligned with each other, the lamp module 300 can enter from the receiving port 211 of the socket 210 to the inside.

  Then, when the lamp module 300 is put in the socket 200, the lamp module 300 is rotated about a direction parallel to the receiving direction thereof, that is, a direction passing through substantially the center of the substrate 310 and orthogonal to the main surface of the substrate 310. The positions of the notch 312 of the lamp module 300 and the overhanging portion 212 of the socket 200 are shifted, and the surface of the substrate 310 of the run module 300 is supported by the overhanging portion 212 of the socket 200 and does not fall.

  Next, portions related to the terminals of the lamp module 300 and the power supply terminal 220 of the socket 200 will be described.

  FIG. 9 is an enlarged view of the DD cross section of FIG. 4 as viewed from the direction of the arrow.

  The power supply terminal 220b also serves as an urging means for pressing the lamp module 300 against the receiving base 210a of the socket 200, and has a "<" shape as shown in FIG. 8B and FIG. The one side 220b1 is fixed to the overhanging portion 212b. When the lamp module 300 received from the receiving port 211 of the socket 200 is rotated in a direction orthogonal to the axis, for example, the E direction, with the direction parallel to the receiving direction as an axis, the power supply terminal 220b The portion 220b3 bent in the shape of "<" and the other side 220b2 of the "<" shape are elastically deformed, and the other side 220b2 approaches the overhanging portion 212b side (F direction in the figure). At this time, the power supply terminal 220 is electrically connected by pressing the terminal 361b of the lamp module 300 to the receiving bottom 210a of the socket 200 by the deformation in the F direction, and holds the lamp module 300.

  Further, as shown in FIG. 7A, positioning concave portions 362a, 362b, 362c, and 362d are formed at predetermined positions (for example, approximately the center of the terminals) of each terminal 361 of the lamp module 300. As shown in FIG. 9, the power supply terminals 220a, 220b, 220c, and 220d of the socket 200 are formed with positioning convex portions 221a, 221b, 221c, and 221d that fit into the concave portions 362a, 362b, 362c, and 362d. Yes.

  It should be noted that when referring to the entire recess rather than each recess, simply use the sign “362”, and when referring to the entire protrusion instead of each protrusion, simply use the code “221”. To express.

3. About attachment of a lamp module (1) Attachment of a lamp module FIG. 10: is a figure explaining attachment to the socket of a lamp module.

  FIG. 10A shows the socket in a state where the lamp module is not yet attached.

  First, with the surface of the lamp module 300 facing downward, the position and shape of each projecting portion 212 of the socket 200 and the position and shape of each notch portion 312 of the lamp module 300 match the socket 200. The lamp module 300 is aligned. When the alignment of the lamp module 300 is completed, the lamp module 300 is moved upward (in the direction of the arrow in FIG. 10A) to enter the interior from the receiving port 211.

  At this time, the respective shapes of the notch portion 312 of the lamp module 300 and the protruding portion 212 of the socket 200 are the same at opposite locations, and the shapes are different at locations adjacent to the left and right. Yes. That is, the notch 312a and the notch 312c, the notch 312b and the notch 312d have the same shape, and the shape of each overhang 212 so as to correspond to each notch 312. It has been decided.

  For this reason, the lamp module 300 can be inserted into the socket 200 only when the lamp module 300 is in a predetermined positional relationship with the socket 200.

  Finally, the lamp module 300 is rotated in the G direction in FIG. 10C with the direction parallel to the receiving direction as an axis (H in FIG. 10C).

  By rotating the lamp module 300 in the G direction, the power supply terminal 220b of the socket 200 is elastically deformed in the F direction as shown in FIG. 9, and the convex portion 221b of the power supply terminal 220b is eventually replaced by the protrusion of the lamp module 300. It fits into a recess (362b in FIG. 7A) in the terminal 361b.

  In this state, the power supply terminal 220 urges the lamp module 300 in a direction opposite to the F direction shown in FIG. 9, that is, so as to press the lamp module 300 against the receiving bottom 210 a of the socket 200.

  As a result, the lamp module 300 is attached to the socket 200 and the terminal 316 of the lamp module 300 and the power supply terminal 220 of the socket 200 are electrically connected.

(2) Removal of lamp module When removing the lamp module 300 from the socket 200, if the lamp module 300 is rotated in the direction opposite to the direction rotated at the time of attachment (G direction in FIG. 10C), The amount of deformation in the F direction of the power supply terminal 220 is reduced, and the urging force of the lamp module 300 by the power supply terminal 220 is eventually lost.

  When the position and shape of each projecting portion 212 of the socket 200 and the position and shape of each notch portion 312 of the lamp module 300 are matched, the lamp module 300 is not supported by the projecting portion 212 of the socket 200 and the socket Deviate from 200.

  As described above, the lamp module 300 can be attached to and detached from the socket 200 simply by rotating the lamp module 300 in the socket 200 in a predetermined direction. For this reason, the brightness | luminance of a lamp module falls, for example, when replacing | exchanging to a new lamp module, the replacement | exchange can be performed easily. At this time, since the circuit (lighting circuit portion) for causing the LED element 350 to emit light is provided not on the lamp module 300 but on the socket 200 side, the structure of the lamp module 300 is simplified and the lamp module 300 is made inexpensive. be able to.

  In addition, since the protruding portion 212 of the socket 200 and the cutout portion 312 of the lamp module 300 are adjacent to each other in shape, the lamp module 300 enters the socket 200 while maintaining a constant positional relationship with respect to the socket 200 at all times. Will do. Therefore, as in the present embodiment, the position of the notch 312 of the lamp module 300, the rotation direction of the lamp module 300 at the time of attachment, and the polarity of the terminal 361 pressed by the power supply terminal 220 are determined. Therefore, the lamp module 300 is not attached to the socket 200 when the polarity of the lamp module 300 is wrong.

  Further, as a structure for attaching the lamp module 300 to the socket 200, a system is adopted in which the lamp module 300 is received from the thickness direction and held by rotating the lamp module 300. The thickness direction of the lamp module 300 is the irradiation direction of the lamp module 300. As shown in FIG. 1, there is no obstacle to the irradiation in this direction, and there is a large space on the front side of the socket 200. The attachment structure to the socket 200 is to attach and detach the lamp module 300 using the above-described space, so that a work space for replacing the lamp module 300 is not required, and the socket 200 is reduced in size and extended. The size of the lighting device 1 can be reduced.

  Further, in a state where the lamp module 300 is attached to the socket 200, the lamp module 300 is pressed from the front side by the power supply terminal 220, so that the back surface of the lamp module 300 contacts the receiving bottom 210 a of the socket 200. Thereby, heat generated when the lighting device 1 is turned on, that is, when the LED element 350 emits light, can be transmitted from the lamp module 300 to the socket 200. For this reason, the heat at the time of light emission of the LED element 350 can be dissipated to the socket 200 side, and the heat dissipation can be improved with a simple structure without using a heat dissipation element or a fan as described in the related art. it can.

  Further, for example, when the cap portion 100 is used as a radiator and is thermally coupled to the socket 200, the heat transmitted to the socket 200 is further transferred to the cap portion 100 and is dissipated from the cap portion 100. The lighting device 1 having excellent heat dissipation characteristics can be obtained.

  On the other hand, since the power supply terminal 220 is provided on the back side of the overhanging portion 212 of the socket 200, the power supply terminal 220 is less likely to be directly touched by a hand, and further prevents dust and the like from adhering to the power supply terminal 220. In addition to providing a beneficial effect in terms of safety, the front side of the socket 200 is simplified, and an excellent design can be obtained.

  In addition, since the lamp module 300 includes the terminals 361 on the surface of the substrate 310, the back surface of the substrate 310 can be made substantially flat, and the contact area between the back surface of the lamp module 300 and the receiving bottom 210a of the socket 200 is improved. be able to.

  Further, the socket 200 is provided with a plurality of power supply terminals 220 (pressing means) for pressing the lamp module 300 and at substantially equal intervals along the outer periphery of the receiving port 211. For this reason, the lamp module 300 receives a substantially uniform pressing force from the socket 200, so that the posture of the lamp module 300 in the socket 200 can be prevented from being inclined, and the back surface of the substrate 310 is placed on the socket 200. Can be reliably brought into contact with the bottom 210a.

<Second Embodiment>
The second embodiment is different from the first embodiment in the lamp module in the LED element mounting method, the number of LED elements, and the like, and in the socket in the lamp module mounting structure.

  In particular, in the mounting structure of the lamp module 300 in the first embodiment, the power supply terminal 220 as the pressing means is provided on the back surface of the protruding portion 212 of the socket 200. However, the pressing structure in the second embodiment is not limited. The power supply unit as a means is visible from the front side of the socket, and projects onto the lamp module in conjunction with the rotation of the lamp module received in the socket so as to press the lamp module against the bottom.

  Hereinafter, the second embodiment will be described with reference to FIGS.

1. Structure (1) Lamp Module FIG. 11 is a view of the lamp module as viewed from the front side.

  As in the first embodiment, the lamp module 500 is electrically connected to the substrate 510, the LED elements 550a, 550b, and 550c mounted on the substrate 510, and the LED elements 550a, 550b, and 550c. Terminals 522a, 522b, 522c, 522d, 522e, and 522f are provided.

  As in the first embodiment, the reference numeral “550” is used when referring to the entire LED element instead of each LED element, and similarly, the reference numeral “522” is used when referring to the entire terminal. A sign is used.

  As shown in FIG. 11, the substrate 510 of the lamp module 500 has, for example, a hexagonal shape in plan view. The central portion of the substrate 510 serves as a mounting portion 520 for mounting the LED element 550.

  Notches 521a, 521b, 521c, 521d, 521e, and 521f for alignment at the time of attachment to the socket 600 are formed on each side of the hexagon, and the LED is located near each corner in plan view. A terminal 522 is formed which is connected to the element 550 and receives power from the socket 600 side when attached to the socket 600. In addition, the code | symbol of "521" is used when referring not to each notch part but the whole notch part. Further, the terminal 522 has a recess formed on the front side thereof, as in the first embodiment.

  As shown in FIG. 11, for example, three LED elements 550 a, 550 b, and 550 c are arranged on the mounting portion 520 of the substrate 510 at positions where the apex angle of the triangle is obtained. In the present embodiment, the LED element 550 uses InGaN using a sapphire substrate.

  FIG. 12 is an enlarged view showing a longitudinal section of a portion where the LED element 550a is mounted.

  As shown in the figure, the substrate 510 includes an insulating layer 514 composed of two insulating plates 511 and 512 and a metal layer 513 that is in close contact with the back surface of the insulating layer 514.

  The insulating plate 511 on the front side of the insulating layer 514 has a through hole 511a corresponding to the position where the LED element 550a is mounted, and the LED element 550a is mounted on the surface of the insulating plate 512. Wiring patterns 2Pp and 2Pn for supplying power to the LED element 550a are formed on the surface of the insulating plate 512 on the back side of the insulating layer 512. The wiring patterns 2Pp and 2Pn will be described later.

  As in the first embodiment, a resin body 530a is formed in the through hole 511a of the surface insulating plate 511, and covers the resin body 530a and the insulating plate 511 as shown in FIGS. As described above, the lens plate 540 is attached via the adhesive layer 545.

  As in the first embodiment, the resin body 530 is mixed with a phosphor that converts blue light emitted from the LED element 550 into white light. Similarly to the first embodiment, the lens plate 540 is also formed with hemispherical convex lenses 541a, 541b, 541c at positions corresponding to the LED elements 550a, 550b, 550c.

  FIG. 13 is a plan view of the substrate with the lens plate removed, and the wiring pattern is indicated by broken lines.

  In the second embodiment, among the terminals 522 of the lamp module, the terminals 522a, 522c, and 522e are for the negative electrode, and the terminals 522b, 522d, and 522f are for the positive electrode.

  Of the wiring patterns connecting each terminal 522 and each electrode of the LED element 550, the wiring pattern 2Pn connected to the -electrode terminals 522a, 522c, 522e is, for example, the adjacent -electrode terminals 522a, 522c. , 522e, and the wiring pattern 2Pp connected to the + electrode terminals 522b, 522d, and 522f directly connects the + electrode terminals 522b, 522d, and 522f to the LED element 550. It is formed to do.

  Note that the terminal 522 and the wiring patterns 2Pn and 2Pp are connected via a through hole, as in the first embodiment.

(2) Socket FIG. 14 is a view of the socket as viewed from the front side.

  As shown in FIG. 14, the socket 600 includes power supply units 620 a, 620 b, 620 c, 620 d, 620 e, and 620 f having power supply terminals for supplying power to the lamp module 500. The power supply unit 620 also has a function of pressing the lamp module 500 against the receiving bottom 610a of the socket 600 when the lamp module 500 received in the socket 600 rotates (corresponding to the pressing means of the present invention). ing. Similarly to the first embodiment, the reference numeral “620” is used when referring to the entire power feeding unit instead of each power feeding unit.

  As shown in FIG. 14, the socket 600 has a hollow disk shape, and a hexagonal receiving port 611 is formed on the top wall 610b corresponding to the shape of the lamp module 500 in plan view. ing. The ceiling wall 610b includes a power feeding unit 620 on the outer side of the approximate center of each side that is the periphery of the receiving port 611 (the outer periphery side of the socket 600).

  (A) of FIG. 15 is the figure which looked at the periphery of the electric power feeding part 620a from the front side, (b) is the figure which looked at the electric power feeding part periphery from the L direction of (a), and the electric power feeding part is Ia-Ib. The socket shows a cross section at Ic-Id.

  As shown in FIG. 14, six power supply units 620 are provided on the top wall 610b of the socket 600. Since the structure of each power supply unit 620 is substantially the same, the power supply unit 620b will be described.

  As shown in FIGS. 15A and 15B, the power feeding unit 620b includes a power feeding housing 621b that swings toward the receiving port 611 in conjunction with the rotation of the lamp module 500 received in the socket 600. And a power supply terminal 636b provided on the bottom 610a side of the power supply casing 621b. The power supply terminal 636b is interlocked with the rotation of the lamp module 500 in the socket 600, and the power supply housing 621b is elastically deformed and rides on the terminal 522b of the lamp module 500. 500 is pressed.

  The power feeding unit 620b is engaged with the notch 521b of the lamp module 500 and is swung by a spring body 625b (corresponding to the engaging unit of the present invention) that moves as the lamp module 500 rotates. Specifically, as shown in FIG. 15B, the power supply housing 621b is pivotally supported by the fixing portion 614b of the bottom 610a of the socket 600 via a screw 635b so as to be swingable. A portion close to one end 626b is fixed in the power supply housing 621b, and a portion close to the other end 628b extends from the power supply housing 621b.

  The extending central portion is bent so as to be fitted (engaged) with the notch 521b of the lamp module 500 (this portion is referred to as a bent portion 627b). Note that one end 626 b of the spring body 625 b is fixed by the convex portions 622 b and 623 b in the power supply housing 621 b, and the other end 628 b is inserted into the socket 600 on the back surface of the top wall 610 b of the socket 600. The protrusions 613b are in contact with each other so as to be movable.

  As a result, when the bent portion 627b moves in the J direction, the power supply portion 620b swings in the K direction about the axis of the screw 635b as a fulcrum. That is, the power feeding portion 620b projects toward the center of the receiving port 611 in conjunction with the movement of the bent portion 627b of the spring 625b (constitutes the projecting portion of the present invention).

  The power supply terminal 636b is connected to the lighting circuit portion outside the socket 600 through a lead wire 637b.

  The power feeding unit 620 is configured to be elastically deformable in a direction orthogonal to the substrate 510 of the lamp module 500 when the power feeding terminal 636b is fitted into the recess of the terminal 522 of the lamp module 500. Specifically, for example, a flexible material is used as the material of the power feeding unit 620, or the thickness of the power feeding unit 620 is reduced.

  The top wall 610b of the socket 600 is formed with a notch 615b corresponding to the swing range of the power supply terminal 636b.

  The substantially central portion of the spring body 625b is wound around the outer periphery of a cylindrical portion 630b having a through-hole through which a screw 635b passes in the center, and in a state where the power feeding portion 620b is attached to the top wall 610b, the power feeding housing 621b is It is biased in a direction away from the receiving port 611 (a direction opposite to the K direction in FIG. 15A). As shown in FIG. 15A, the power supply housing 621b is configured such that the power supply terminal 636b abuts against the inner edge of the notch 615b and the swing of the power supply 620b is restricted. It has become.

  Further, as shown in FIG. 14, the bent portions 627 of the spring body 625 have different shapes, and when the notched portion 521 of the lamp module 500 is in a predetermined position and shape, the lamp module 500 is attached to the socket 600. It is possible to enter the interior from the receiving port 611.

2. About attachment of a lamp module FIG. 16: is a figure explaining attachment to the socket of a lamp module.

  FIG. 16A shows the socket in a state where the lamp module is not yet attached. First, as shown in FIG. 16B, the bent portions of the spring bodies 625 projecting from the receiving port 611 of the socket 600 with the LED element (550) mounted side of the lamp module 500 as the front side. The lamp module 500 is inserted into the socket 600 from the receiving port 611 so that the shape of (627) matches the shape of each notch (521) of the lamp module 500.

  At this time, the respective shapes of the notched portion (521) of the lamp module 500 and the bent portion (627) of each spring body 625 of the socket 600 are in conflict with each other as in the first embodiment (that is, There are two types of shapes of the notch portion 521 and the bent portion 627). For this reason, the lamp module 500 can enter the interior of the lamp module 500 only when it has a predetermined positional relationship with the socket 600.

  Next, the lamp module 500 is rotated in the K direction in FIG. 16C with a line segment passing through the center of the lamp module 500 and orthogonal to the substrate 510 as an axis. Then, since the bent portion 625 is engaged with the notch portion 521 of the lamp module 500, the power supply housing 621 swings (rotates) around the axis of the screw 635 due to the rotation of the lamp module 500 in the K direction. Begin to.

  That is, the power feeding unit 620 starts to project to the receiving port 611 in conjunction with the rotation of the lamp module 500. When the lamp module 500 is further rotated to a predetermined position, the power supply unit 620 is elastically deformed and the power supply terminal (636) is fitted into the recess of the terminal 522 of the lamp module 500.

  In a state where the power supply terminal 636 is fitted in the concave portion of the terminal 522, the power supply unit 620 is elastically deformed, and the power supply unit 620 presses the lamp module 500 against the bottom 610 a of the socket 600. As a result, the lamp module 500 is attached (held) to the socket 600, and the terminal 522 of the lamp module 500 and the power supply terminal 636 of the socket 600 are electrically connected.

  In the present embodiment, in order to facilitate the rotation of the lamp module 500 in the socket 600, a cylindrical guide shaft 610c protruding toward the receiving port 611 at the approximate center of the receiving bottom 610a of the socket 500 (see FIG. 14). In the center of the lamp module 500, a through-hole 515 (see FIG. 11) for extrapolating the guide shaft 610c is provided.

3. Others In the above description, the power supply unit 620, that is, the power supply housing 621 is configured to be elastically deformable in the receiving direction of the lamp module 500, and the power supply housing 621 constitutes the pressing means of the present invention. Even if the power supply housing is not elastically deformed, the lamp module can be pressed against the socket bottom.

  As such a first example, the power supply terminal may be moved in the lamp module receiving direction, and the power supply terminal may be urged in a direction in which the lamp module is pressed against the socket bottom. . In order to energize the power supply terminal, for example, a compression spring may be disposed between the power supply terminal 636b and the top wall of the power supply housing 621b in FIG.

  As a second example, if the power supply housing is movable in the lamp module receiving direction, and the power supply housing is biased in the direction in which the lamp module is pressed against the socket bottom. good. In order to energize the power supply housing, for example, in FIG. 15B, a compression spring is provided between the screw 635b and the power supply housing 621b, or the power supply housing 621b and the socket 600 are connected within the socket 600. What is necessary is just to couple | bond with the receiving base 610 using a tension spring.

<Third Embodiment>
The third embodiment is different from the first and second embodiments in the configuration of the pressing means. Specifically, the pressing means in the first embodiment is configured by the power supply terminal 220 provided on the back surface of the overhanging portion 212 of the socket 200, but in this embodiment, the elastic deformation of the overhanging portion is performed. The pressing means is configured using the above.

  Hereinafter, the socket and the lamp module according to the third embodiment will be described with reference to FIGS.

1. FIG. 17 is a view of the lamp module as viewed from the front side, and FIG. 18 is a view of the socket as viewed from the front side. FIG. 19 is a vertical cross-sectional view of the connection portion between the lamp module and the socket.

  The lamp module 700 in this embodiment is the same as the lamp module 500 described in the second embodiment, but the LED element 550, the lens plate 540, and the like are different, and the shape of the substrate 705 is different.

  As shown in FIG. 17, the substrate 705 has a substantially circular shape in plan view, and four cutout portions 711 a, 711 b, 711 c, and 711 d are formed on the outer side of the mounting portion 710 at the center portion. Terminals 730a, 730b, 730c, and 730d are formed adjacent to the notches 711a, 711b, 711c, and 711d in the circumferential direction. Note that the reference numeral “711” is used when referring to the entire cutout portion instead of the respective cutout portions, and the reference numeral “730” is used when referring to the entire terminal.

  As shown in FIGS. 17 and 19, the substrate 705 is outside the mounting portion 710, and step portions 720 a, 720 b, 720 c, and 720 d are formed between adjacent cutout portions. Terminals 730a, 730b, 730c, and 730d are formed on the bottom surfaces 721a, 721b, 721c, and 721d of 720b, 720c, and 720d. In addition, when referring to the entire step portion instead of each step portion, the symbol “720” is used. When referring to the entire bottom portion instead of the respective bottom portion, the reference numeral “721” is used. When indicating, the symbol of “730” is used.

  This step 720 is provided in the vicinity of the notch 711 located on the opposite side to the direction in which the lamp module 700 is rotated when the lamp module 700 is attached to the socket 755, as shown in FIG. In this way, the bottom surface 721 has a slope that becomes shallower as the distance from the adjacent notch 711 increases.

2. Socket Structure The socket 750 has a receiving port 761 on the front side as in the first and second embodiments, and the positions and shapes of the notches 711a, 711b, 711c, and 711d of the lamp module 700. Overhang portions 770a, 770b, 770c, and 770d are formed so as to correspond to. In addition, the code | symbol "770" is used when referring to the whole overhang | projection part.

  Each of the overhang portions 770a, 770b, 770c, and 770d includes a pressing portion 771a, 771b, 771c, and 771d that presses the lamp module 700 rotated in the socket 750 against the receiving bottom 755a of the socket 750, and the pressing portions 771a, 771b, and 771c. , 771d and the top wall 755b are connected to 772a, 772b, 772c, 772d. In addition, the code | symbol of "771" is used when referring to the whole press part, and the code | symbol of "772" is used when indicating the whole connection part.

  As shown in FIG. 19, the pressing portion 771b enters the socket 750 as it moves away from the connecting portion (772). That is, the distance between the pressing portion 771b and the receiving bottom 755a of the socket 750 is wide at the end portion 773 on the upstream side (right side) in the direction of rotation when the lamp module 700 is attached (in FIG. 19, it is leftward). The end portion 774 on the downstream side (left side) is narrower. The pressing portion 771 is elastically deformable in the inner and outer directions of the socket 750 (vertical direction in FIG. 19) with the connecting portion 772 as a fulcrum.

  Power supply terminals 760a, 760b, 760c, and 760d for supplying power to the lamp module 700 via terminals 730a, 730b, 730c, and 730d of the lamp module 700 are provided on the back surfaces of the pressing portions 771a, 771b, 771c, and 771d. ing. Note that the symbol “760” is used when referring to the entire power supply terminal.

3. About the attachment structure to the socket of a lamp module The attachment structure to the socket 750 of the lamp module 700 is demonstrated. The attachment structure, the attachment method, and the like are basically the same as those in the first and second embodiments.

  First, the lamp module 700 is inserted into the socket 750 through the receiving port 761 in a state where the notches 711 are aligned with the protruding portions 770 of the socket 750.

  Next, the lamp module 700 is rotated around its axis, for example, counterclockwise. Hereinafter, the overhanging portion 770b and the stepped portion 720b will be described as an example with reference to FIG. At this time, since the distance between the upstream end 773 of the overhanging portion 770b and the receiving bottom 755a is wide, the lamp module 700 can be smoothly rotated. Note that the pressing portion 771b during rotation of the lamp module 770 is deformed to the outside (upper side) of the socket 750.

  When the position of the step portion 720b of the lamp module 700 exceeds the end portion 774 on the downstream side of the pressing portion 771b due to the rotation of the lamp module 700, the pressing portion 771b returns to the inner side (lower side). Thus, the terminal 730b formed on the bottom surface 721b of the stepped portion 720b of the lamp module 700 and the supply terminal 760b on the back side of the pressing portion 771b are electrically connected, and the pressing portion 771b connects the lamp module 700 to the socket. The housing 755 is pressed against the receiving bottom 755a. In order to remove the lamp module 700 attached to the socket 750, the lamp module 700 may be rotated in the same direction as when the lamp module 700 is attached.

<Modification>
Although the present invention has been described based on each embodiment, the content of the present invention is not limited to the specific examples shown in each of the above embodiments. For example, the following modifications are possible. An example can be implemented.

1. About the lighting device In the embodiment, the hanging type lighting device is used. However, the present invention can be applied to other types of lighting devices such as a direct attachment (sealing) method, an embedded method, and a wall-mounted method. .

2. Regarding the lighting circuit portion In the embodiment, the point circuit portion is provided on the bottom outside the shade portion, but the lighting circuit portion may be provided in the lamp module, or one of the point circuit portions. Only a constant current circuit, for example, may be provided in the lamp module. However, when a circuit is provided in the lamp module, it is preferable to mount an electrical component or the like on the front side of the lamp module in order to secure a certain contact area between the back surface of the lamp module and the socket bottom.

  In addition, the lighting circuit unit includes the rectifying / smoothing circuit, the voltage adjusting circuit, and the constant current circuit described in the embodiment, but may naturally include a circuit having another function. As such other functions, for example, when the lighting switch of the lighting device is turned on, a safety circuit that supplies power to the lamp module only when the lamp module is correctly set in the socket is provided. Also good. Specifically, it can be implemented by providing the circuit with a switching element that is turned on only when the power supply terminal of the socket and the terminal of the lamp module are electrically connected.

3. Regarding Socket and Shade Part In the above embodiment, the socket is attached so as to be in direct contact with the bottom part of the shade part, but the socket and the shade part may be thermally coupled. That is, the heat generated when the LED element emits light only needs to be transmitted from the substrate to the socket and from the socket to the cap, and for example, the socket and the cap may be coupled via a thermally conductive member. Needless to say, even with such a configuration, heat generated when the LED element emits light can be efficiently radiated to the socket side.

4). About the shade part Although the hemispherical shade part was used in 1st Embodiment as a heat radiator of an illuminating device, another shape may be sufficient. Examples of such a cover include a cover that has a spherical shape with an opening and covers the lamp module and further the socket. Then, if the peripheral edge of the opening of the cover is used to attach to the outer periphery of the socket, heat from the lamp module can be transferred to the socket and the cover.

5. About Socket In each of the above embodiments, the socket has a hollow disk shape, and includes an upper wall (first wall) and a lower wall (second wall) that face each other, and a lamp is provided on the upper wall. A receiving port for receiving the module is formed, and the lower wall is a receiving base. However, in the present invention, for example, even when the socket bottom is configured by the bottom of the cap, the bottom of the cap is regarded as the socket bottom. Needless to say, the shape of the socket in plan view is not limited to a circular shape, but may be other shapes such as a polygonal shape.

  In addition, the socket in the second embodiment has an overhanging portion on the upper wall (the top wall in the second embodiment). For example, the socket has a bottomed cylindrical shape, and further has a peripheral wall. It is also possible to provide an overhanging portion on the peripheral wall by increasing the thickness.

  Further, when the socket bottom is movable in the lamp module receiving direction, for example, when an urging means is provided to press the socket bottom against the lamp module, the lamp module is attached to the socket. In this state, the bottom of the socket can be pressed against the back surface of the lamp module.

6). Lamp Module (1) Substrate The substrate in each of the above embodiments includes an insulating layer and a metal layer, but may include only an insulating layer, for example. Even in this case, if the back surface of the insulating layer is in contact with the socket bottom while the lamp module is attached to the socket, heat generated when the lamp module is lit can be transmitted to the socket.

(2) Insulating layer In each of the above-described embodiments, the insulating layer is constituted by a plurality of insulating plates, but may of course be constituted by a single insulating plate. Also, the insulating plate may be made of a material other than the embodiment, for example, a composite material made of a synthetic resin and an inorganic filler as long as it is a substrate configured with a metal layer. Furthermore, you may use metal plates other than an aluminum plate for a metal layer.

(3) Shape In the above embodiment, the planar view shape of the substrate is circular or hexagonal, but other shapes may be used. However, in consideration of the space to be attached to the socket of the lamp module, the number of LED elements to be mounted on the board, etc., it is preferable that the board has a circular or polygonal shape.

(4) LED element In the first and second embodiments, blue light-emitting InGaN is used as the light emitting material as the LED element, but other LED elements such as AlInGaP or AlGaAs are used as the light emitting material. May be used. Furthermore, the number of LED elements to be used may be appropriately determined according to the light output of the lighting device.

  In the embodiment, in order to obtain white light as a lighting device, an LED element using InGaN as a light emitting material and a YAG-based phosphor are used. For example, AlInGaN that emits ultraviolet light is used as a light emitting material. R, G, B phosphors, and further yellow (Y) phosphors may be used. Furthermore, using blue, red, and green color LED elements, these may be mixed as a set. However, in the case of using blue, red, and green color LED elements, a diffusion lens or the like for mixing the color lights may be required.

  In the embodiment, the LED element is used as the light emitting element. However, other elements such as a resonant LED, a vertical resonant laser diode, and a laser diode (LD) may be used. Moreover, as a mounting method of the LED element, for example, when an SMD (Surface Mounted Device) type LED element is used, the electrode on the side surface and the wiring pattern may be connected by solder or the like.

7. About a press means In each said embodiment, the press means which presses a lamp module to the socket bottom is provided in the socket side. However, for example, even if a biasing means for biasing the lamp module in the thickness direction of the lamp module and increasing the thickness is provided on the surface of the lamp module substrate, the pressing means for pressing the lamp module against the socket bottom. Can be configured.

  More specifically, in the first and third embodiments, the lamp module terminals and the socket power supply terminals may be attached in reverse. The biasing means here is a power supply terminal made of an elastic body in the shape of “<” in the first embodiment, and an overhang that can be elastically deformed in the thickness direction in the third embodiment. Corresponds to the part.

8). Pressing Function and Power Supply Function In each of the above embodiments, the pressing means functions to press the lamp module by using a shape that can be elastically deformed or an elastically deformable material for the power supply terminal for supplying power to the lamp module. Is given. However, a pressing means may be provided separately from the power supply terminal. However, even when the power supply function is not provided to the pressing means, a plurality of locations where the lamp module is pressed are better from the viewpoint of maintaining a constant posture of the lamp module attached to the socket, and it is better not to be biased.

9. Regarding the contact surface between the lamp module and the socket In each of the above embodiments, the surface shape of the back surface of the lamp module and the bottom surface of the socket are flat with each other. These surface shapes may be uneven. However, in this case, since the lamp module is rotated in the socket, it is necessary to have a certain shape in the circumferential direction around the rotation axis of the lamp module.

  A lamp module and a socket are provided, and the heat generated when the light emitting element emits light can be transmitted to the socket from the lamp module and efficiently used for a lighting device.

It is the schematic of the illuminating device in 1st Embodiment, and one part is notched so that the mode of an inside may be understood. It is a front view of the socket in the state in which the lamp module is attached in 1st Embodiment, and 1 part is notched so that the mode of the inside of a socket may be understood. It is a perspective view which shows the lamp module and socket in 1st Embodiment. In FIG. 2, it is the figure which looked at the socket with the lamp module attached from the bottom. It is the figure which looked at the lamp module in 1st Embodiment from the front side, (b) is the figure which looked at the AA cross section of (a) from the arrow direction. FIG. 6 is an enlarged view of a portion B in FIG. (A) is the figure which looked at the board | substrate which removed the lens etc. from the front side, (b) is the figure which removed the 1st insulating board and was seen from the front side, (c) is the figure which looked at the 1st and 2nd insulating boards. It is the figure seen from the front side after removing. (A) is the figure which looked at the socket from the front side, (b) is the figure which looked at CC section of (a) from the arrow direction. It is a figure explaining electrical joining with a socket and a lamp module in a 1st embodiment. It is a figure for demonstrating attachment of the lamp module to a socket in 1st Embodiment. It is the figure which looked at the lamp module in 2nd Embodiment from the front side. It is an enlarged view of the mounting part of the LED element in 2nd Embodiment. It is the figure which looked at the board | substrate which removed the lens etc. in 2nd Embodiment from the front side. It is the figure which looked at the socket in 2nd Embodiment from the front side. (A) is the figure which looked at the electric power feeding part from the front side, (b) is the figure which looked at the place which cut | disconnected the electric power feeding part by Ia-Ib and each socket by Ic-Id from the L direction of (a). It is. It is a figure explaining attachment of the lamp module to a socket in a 2nd embodiment. It is the figure which looked at the lamp module in 3rd Embodiment from the front side. It is the figure which looked at the socket in 3rd Embodiment from the front side. It is a figure explaining electrical joining with a socket and a lamp module in a 3rd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device 110 Cap part 200,600,750 Socket 210a, 610a, 755a Base 211,611,761 Receptacle 212,770 Overhang part 220,636,760 Feed terminal 300,500,700 Lamp module 310,510,705 Substrate 350, 550 LED element 361, 522, 730 Terminal 620 Power supply unit

Claims (16)

A lighting device comprising: a lamp module having a light emitting element on a surface of a substrate; and a socket having a receiving port for receiving the lamp module on a front side,
The bottom receiving the lamp module of the socket has substantially the same surface shape as the back surface of the lamp module substrate,
The socket includes a pressing unit that presses the lamp module against the socket bottom when the lamp module is rotated about a direction parallel to the receiving direction in a state where the lamp module is received through the receiving port. A lighting device comprising:   The socket has a plurality of projecting portions that project to the inside of the receiving port when the socket is viewed from the front side, and the lamp module corresponds to the shape of the receiving port when the socket is viewed from the front side. The lighting device according to claim 1, further comprising a cutout portion having a shape opposite to the overhang portion, wherein the pressing means is provided on a back surface of the overhang portion.   When the socket is viewed from the front side, the socket has a plurality of projecting portions that are projected to the inside of the receiving port and elastically deformable in the receiving direction, and the lamp module is viewed from the front side. 2. The illumination according to claim 1, further comprising a cutout portion having a shape opposite to the projecting portion so as to correspond to a shape of the receiving port, and the pressing means being configured by the projecting portion. apparatus.   The lighting device according to claim 2 or 3, wherein there are two or more shapes of the plurality of projecting portions.   The socket has a plurality of projecting portions that project inward of the receiving port when the socket is viewed from the front side in conjunction with the rotation when the lamp module is rotated in a state where the lamp module is received. The lighting device according to claim 1, wherein the pressing means is provided in a portion.   When the socket rotates in a state where the lamp module is received, the socket protrudes inside the receiving port and elastically extends in the receiving direction when the socket is viewed from the front side. The lighting device according to claim 1, wherein the lighting device includes a plurality of portions, and the pressing unit includes the protruding portion.   The lamp module has a notch at an outer peripheral edge thereof, and the overhanging portion includes an engaging portion that engages with the notch when the lamp module is received, and is accompanied by rotation of the lamp module. The lighting device according to claim 5 or 6, wherein the lighting device projects to the inside of the receiving port in conjunction with the movement of the engaging portion.   The lighting device according to claim 7, wherein there are a plurality of the notches, and there are two or more shapes. The lamp module includes a terminal connected to the light emitting element on a surface of the substrate,
The lighting device according to any one of claims 2 to 8, wherein a portion of the pressing means that contacts the lamp module serves as a power supply terminal for supplying power to the lamp module.   The lighting device according to claim 1, wherein the pressing means are provided at substantially equal intervals along a circumferential direction of the receiving port.   The said board | substrate is equipped with a metal plate in the back surface, and the said metal plate is contacting the socket bottom of the said socket in the state with which the lamp module was hold | maintained at the socket. The lighting device according to item.   The lighting device according to any one of claims 1 to 11, wherein a shape of the lamp module in a plan view is substantially circular or polygonal.   The lighting device according to any one of claims 1 to 12, further comprising a radiator that is thermally coupled to the socket.   The lighting device according to claim 13, wherein the heat radiator is a shade portion that collects light emitted from the lamp module in a direction perpendicular to the front surface of the substrate.   The lighting device according to claim 1, wherein a lighting circuit unit for lighting a light emitting element of the lamp module held in the socket is provided on the socket side. A lamp module used in the lighting device according to claim 1.

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