WO2012005244A1 - Socket, socket assembly, and lighting device - Google Patents

Abstract

A socket (6) is formed by arranging each of a plurality of terminal units (40a-42a) on the peripheral section of a connector receiving unit (31); and when a lamp unit (7) is fitted in the side of a device main body (5), a connector (56) protruding to the base section side of a housing (50) is locked into the connector receiving unit (31), and each of a plurality of terminal pins (57-59) arranged on the peripheral section of the connector (56) are electrically connected to the corresponding terminal unit (40a-42a). Thus, the precise electrical connection of the lamp unit (7) to the side of the device main body (5) is achieved by means of a simple structure.

Description

Socket, socket assembly and lighting device

The present invention relates to a socket, a socket assembly, and a lighting device of a lighting device to which a lamp unit with a base is detachably mounted.

In recent years, light emitting elements such as LEDs tend to be widely used as light sources in lamp units for lighting devices. As a structure for mounting this type of lamp unit on the apparatus body side, for example, a pair of power supply terminal pins protruding from the base are inserted into each key groove provided in the socket, and the lamp unit is rotated while the key is rotated. 2. Description of the Related Art A technique for simultaneously realizing support and electrical connection of a lamp unit to a socket by locking a power supply terminal pin to a terminal end of a groove is widely known.

Here, a light emitting element such as an LED generally has a characteristic that the light output is lowered and the life is shortened as the temperature rises. Therefore, as a technology related to heat countermeasures for a lamp unit using an LED as a light source, for example, in Japanese Patent Application Laid-Open No. 2010-129488, the casing of the lamp unit is made of a metal such as an aluminum alloy having good thermal conductivity. A technique is known in which a base projecting from the base side of the housing is pressed against the apparatus main body side when engaged with a socket so as to be in contact with heat.

However, when the configuration in which the base is pressed against the apparatus main body as described above is adopted, the power supply pin is subjected to excessive stress from the socket side. Accordingly, it is necessary to ensure sufficient strength for the power supply pins and the like, and there is a possibility that the structure of the lighting device becomes complicated.

By the way, in this type of lighting device, there is a case where the lamp unit is required to be grounded. For example, it is known that when the casing of the lamp unit is made of a metal such as an aluminum alloy as described above, it is easy to generate noise in a lighting circuit or the like built in the lamp unit. Unit grounding may be required. Further, for example, there is a case where the lamp unit is required to be grounded due to a request to ensure a creepage distance for each device on the built-in lighting circuit.

However, in this type of lighting device, there has been no proposal for a specific configuration for effectively grounding the lamp unit. To deal with this, for example, it is conceivable to add a grounding terminal pin that also serves as a support function for the lamp unit, as in the case of the power supply terminal pin described above. In such a case, the grounding terminal pin is also sufficient. It is necessary to ensure a sufficient strength, and there is a concern that the structure becomes more complicated.

An object of the present invention is to provide a socket, a socket assembly, and a lighting device that can realize an electrical connection with a lamp unit with a simple configuration.

A socket according to an aspect of the present invention includes a base receiving portion that receives a base protruding from a lamp unit; and extends in a circumferential direction on an inner peripheral surface of the base receiving portion, and the base is received by the base receiving portion. A key groove for engaging an engaging projection protruding from the outer peripheral surface of the base with the terminal portion when rotated relative to the base receiving portion; and independent of the engaging projection from the lamp unit to the base. Each accommodating portion for accommodating and electrically connecting each terminal pin for power supply and grounding projecting in the direction of the rotation axis.

Also, a socket assembly according to an aspect of the present invention includes the socket and a device main body that supports the socket.

Also, an illumination device according to an aspect of the present invention includes the socket; an apparatus main body that supports the socket; and a lamp unit having a base that is locked in a base receiving portion of the socket.

1 is an exploded perspective view of a lighting device according to a first embodiment of the invention. Same as above, sectional view of lighting device Side view showing the lamp unit separately from the socket Same as above, top view of the socket from the lamp unit side Same as above, top view of socket viewed from heat dissipation member side Same as above, sectional view taken along line VI-VI in FIG. Same as above, top view of the lamp unit from the base side Same as above, circuit diagram of lighting device As above, an explanatory diagram showing the relationship between the socket and the heat dissipating member when starting the lamp unit engagement As above, an explanatory diagram showing the relationship between the socket and the heat dissipation member when the lamp unit is locked As above, an explanatory diagram showing the relationship between the terminal pin and the terminal portion when starting the lamp unit engagement As above, an explanatory diagram showing the relationship between the terminal pin and the terminal portion when the lamp unit is locked Same as above, perspective view showing each terminal block fixed to the heat dissipation member Sectional drawing of an illuminating device in connection with the 2nd Embodiment of this invention. The same as above, Explanatory drawing which shows the relationship between the terminal pin for earthing at the time of a lamp unit engagement start, and a heat radiating member As above, an explanatory diagram showing the relationship between the grounding terminal pin and the heat dissipation member when the lamp unit is locked The perspective view of the lamp | ramp with a base concerning the 3rd Embodiment of this invention. Same as above, a cross-sectional perspective view taken along line bb of FIG. Same as above, a cross-sectional view showing the signal cap member taken out Same as above, top view showing lamp with cap, with cover member removed Same as above, bottom view of lamp with cap Same as above, circuit block diagram of control device in lamp with cap Same as above, front view of socket device Same as above, side view of socket device Same as above, perspective view of the socket device viewed from the front side The front view which expands an engaging means and shows a socket apparatus same as the above Same as above, perspective view of socket device viewed from back side The figure which showed typically the operation | movement of the engaging means in a lamp | ramp with a nozzle | cap | die, and a socket apparatus, and the state of an electrical connection with a support member, Comprising: The figure which shows the state which the engaging means engaged The figure which showed typically the operation | movement of the engaging means in a lamp | ramp with a nozzle | cap | die, and a socket apparatus, the support member, and the state of an electrical connection, Comprising: The figure which shows the state which an engaging means does not engage The perspective view which shows the terminal board in a socket apparatus same as the above, and the state in which the terminal board was accommodated in the terminal case Same as above, showing the terminal plate in the socket device, perspective view of the terminal plate The perspective view which shows the state which mounts a lamp | ramp with a nozzle | cap | die on a socket apparatus same as the above. Same as above, showing a state where the lamp with cap is mounted on the socket device, and a surface view of the socket device. Same as above, showing a state where the lamp with cap is mounted on the socket device, and a back view of the cap member Sectional drawing which shows the state which showed the lighting fixture which attached the lamp | ramp with a cap to a socket apparatus, and installed the downlight on the ceiling same as the above The cross-sectional perspective view which shows the lighting fixture which equipped the lamp | ramp with a base | cap | die with the socket apparatus same as the above, and shows the lamp | ramp with a base | cap | die and socket apparatus of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
1 to FIG. 1 relate to a first embodiment of the present invention, FIG. 1 is an exploded perspective view of a lighting device, FIG. 2 is a sectional view of the lighting device, and FIG. 3 is a side view showing a lamp unit separated from a socket, 4 is a plan view of the socket as seen from the lamp unit side, FIG. 5 is a plan view of the socket as seen from the heat radiating member side, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. FIG. 8 is a circuit configuration diagram of the lighting device, FIG. 9A is an explanatory diagram showing the relationship between the socket and the heat dissipation member when the lamp unit is engaged, and FIG. 9B is the socket when the lamp unit is locked. 10A is an explanatory diagram showing the relationship between the terminal pin and the terminal portion when the lamp unit engagement is started, and FIG. 10B is a diagram showing the relationship between the terminal pin and the terminal portion when the lamp unit is locked. Fig. 11 shows the terminal blocks fixed to the heat dissipation member FIG.

The lighting device 1 shown in FIGS. 1 and 2 is a lighting device suitable for, for example, a downlight. The device main body 5, a socket 6 supported by the device main body 5, and the device main body 5 through the socket 6. The lamp unit 7 is detachably mounted. In the description of the first and second embodiments, the vertical direction and the like will be described as appropriate with reference to a state in which the lighting device 1 is attached as a downlight.

The apparatus main body 5 includes, for example, a reflector member 10 that surrounds the peripheral portion of the lamp unit 7 (see FIG. 2), and a radiator 11 that is fixed to the upper portion of the reflector member 10. .

The reflector member 10 is formed of, for example, a tapered sheet metal member that expands downward from above, and has a reflective surface 10a on the inner peripheral surface. An outward flange portion 10b is provided at the lower end portion of the reflector member, and the reflector member 10 can be attached to an indoor ceiling or the like via the outward flange portion 10b. Further, for example, a cylindrical radiator support portion 10c is provided on the upper part of the reflector member 10, and the radiator 11 is fixed to the radiator support portion 10c by screws or the like.

The radiator 11 includes, for example, a substantially disk-shaped radiator body 11a fixed to the radiator support portion 10c, and a plurality of radiation fins 11b protruding from the upper surface of the radiator body 11a. It is integrally formed of a metal such as an aluminum alloy having good properties.

Moreover, the terminal block attaching part 11c is formed in the thermal radiation body 11, for example by notching a part of thermal radiation fin 11b. Furthermore, a wiring groove 11d is formed in the heat radiating body 11 by cutting out a part of the heat radiating body main body 11a, and the upper surface side of the heat radiating body main body 11a (terminal block mounting portion 11c) is formed through the wiring groove 11d. Side) and the bottom side communicate with each other.

As shown in FIG. 11, for example, a terminal block 12 for power supply, a terminal block 13 for control signals, and a terminal block 14 for grounding are fixed to the terminal block mounting portion 11c by screws or the like. ing. Each of these terminal blocks 12-14 has internal wiring terminals 12a-14a and external wiring terminals 12b-14b, respectively. In each of the terminal blocks 12 to 14, the internal wiring terminals 12a to 14a are electrically connected to the internal wirings 15 to 17 routed from the socket 6 side via the wiring groove 11d.

Here, as shown in FIG. 8, for example, a connector 22 a of an external wiring 22 connected to the AC power supply 20 can be connected to the internal wiring terminal 12 a of the power supply terminal block 12. Further, for example, a connector 23 a of an external wiring 23 connected to the dimming operation unit 21 can be connected to the internal wiring terminal 13 a of the control signal terminal block 13. Further, a connector 24a of the grounded external wiring 24 can be connected to the internal wiring terminal 14a of the grounding terminal block 14. The external wirings 22 to 24 are electrically connected to the corresponding internal wirings 15 to 17 through these connector connections.

On the other hand, each external wiring terminal 12b to 14b can be connected to a relay wiring connector (not shown), and the lighting device 1 can be connected to another lighting device (not shown) via these relay wirings. It can be electrically connected.

For example, as shown in FIGS. 1 to 3, 4, 5, and 9, the socket 6 includes a base receiving part 31 having a substantially cylindrical shape, and an outward flange connected to the lower end (tip part) of the base receiving part 31. The part 32 has a socket body 30 integrally formed with a heat resistant resin or the like.

For example, three key grooves 31 a extending in the circumferential direction are recessed on the inner peripheral surface of the base receiving part 31 at regular intervals (for example, at regular intervals of 120 ° around the central axis O of the base receiving part 31). It is installed. A communication groove 31b that opens the key groove 31a to the tip end side of the cap receiving part 31 is provided at the start end set on one end side of the key grooves 31a. Further, the key groove 31a is provided with a locking step portion 31c protruding inside the key groove 31a adjacent to the communication groove 31b.

Further, the outward flange portion 32 is provided with three spring accommodating portions 33 each having a bag shape protruding upward at equal intervals (for example, every 120 ° around the central axis O of the base receiving portion 31). It has been. The top portion of the spring accommodating portion 33 is set as a screw-fastened seat portion 33a, and a screw 34 penetrating the seat portion 33a from the bottom surface side of the outward flange portion 32 is fastened to the bottom surface of the radiator body 11a. At that time, the spring 35 accommodated in the spring accommodating portion 33 is sandwiched between the head portion 34a of the screw 34 and the seat portion 33a, so that the socket 6 (socket body 30) is It has an urging force in the pressing direction and is elastically supported. In order to prevent the socket body 30 from being bent or the like due to the urging force of the spring 35 when the lamp unit 7 is attached to the socket 6 (described later), each spring accommodating portion 33 has a terminal end of each key groove 31a. It is desirable to be disposed in the vicinity of the part.

Further, for example, as shown in FIG. 4, on the upper surface of the outward flange portion 32, power supply terminal portions are respectively provided in the regions partitioned by the respective spring accommodating portions 33 (the respective fastening portions with the radiator body 11 a). A pair of terminal boxes 40 for accommodating 40a, a pair of terminal boxes 41 for accommodating control signal terminal portions 41a, and a terminal box 42 for accommodating grounding terminal portions 42a are fixed. The terminal portions 40a to 42a accommodated in the terminal boxes 40 to 42 are electrically connected to the internal wiring terminals 12a to 14a of the corresponding terminal blocks 13 to 14 via the internal wirings 15 to 17, respectively. Has been.

Further, for example, as shown in FIG. 4, in the outward flange portion 32, pin grooves 45 to form arcs concentric with the central axis O of the base receiving portion 31 at positions corresponding to the terminal boxes 40 to 42, respectively. 47 is provided. The terminal boxes 40 to 42 communicate with the outside through the pin grooves 45 to 47.

The lamp unit 7 closes the casing 50 having an opening 50a on the lower end side (front end side), the light source module 51 and the lighting circuit module 52 held in the casing 50, and the opening 50a of the casing 50. And a glove 53 to be configured.

The housing 50 has a top cylindrical portion 55 having an opening 50a on the lower end side, and a base 56 projecting from a top portion 55a formed on the base side of the cylindrical portion 55. Further, it is integrally formed of a metal such as an aluminum alloy having good thermal conductivity. That is, in this embodiment, the housing 50 is configured by a stepped substantially cylindrical member in which a cylindrical portion 55 and a base 56 having a substantially cylindrical shape smaller in diameter than the cylindrical portion 55 are integrally provided. Yes.

Here, for example, as shown in FIG. 3, the height h2 of the base 56 is set higher than the height h1 of the base receiving portion 31 of the socket 6 (that is, h2> h1).

On the outer peripheral surface of the base 56, three engagement protrusions 56 a corresponding to the key grooves 31 a formed on the inner peripheral surface of the base receiving portion 31 are provided at regular intervals (for example, every 120 ° around the central axis O of the base 56. At equal intervals).

A pair of power supply terminal pins 57 and a pair of control signal terminals which can be inserted into the pin grooves 45 to 47 corresponding to the terminal portions 40a to 42a on the socket 6 side from the top portion 55a of the cylindrical portion 55. A pin 58 and a grounding terminal pin 59 project along the direction of the central axis O of the base 56.

As shown in FIG. 7, among these terminal pins 57 to 59, the power terminal pin 57 and the control signal terminal pin 58 are erected on the top 55a of the cylindrical portion 55 via insulators 57a and 58a. ing. On the other hand, the grounding terminal pin 59 is erected directly with respect to the top portion 55 a and is electrically connected to the housing 50.

As shown in FIG. 6, the light source module 51 includes a plurality of surface-mounted light emitting diodes (LEDs) 62, which are light emitting elements, mounted on an LED mounting substrate 61 as a light source. More specifically, the LED mounting substrate 61 is configured by a substantially disk-shaped member made of, for example, an aluminum substrate having good thermal conductivity. On the LED mounting board 61, for example, six LEDs 62 are mounted at regular intervals. As shown in FIG. 2, the light source module 51 is locked to a stepped portion 50b provided in the vicinity of the opening 50a in the housing 50, and fixed by screwing or the like.

2 and 8, the lighting circuit module 52 includes a lighting circuit 66 and a control circuit 67 formed on a substantially disc-shaped circuit board 65.

The AC power supply 20 is connected to the input side of the lighting circuit 66 through the power supply terminal pin 57, and the light source module 51 is connected to the output side. The lighting circuit 66 includes, for example, a full-wave rectifier circuit, a ripple current smoothing capacitor, a switching transistor, a switching transformer, a rectifier smoothing circuit, and the like (all not shown). Then, the lighting circuit 66 converts the AC power supplied from the AC power supply 20 into a predetermined DC output and outputs it to the light source module 51.

The dimming operation unit 21 is connected to the control circuit 67 via a control signal terminal pin 58. The control circuit 67 includes, for example, a comparator, a reference signal output unit, and the like (none of which are shown). Then, for example, the control circuit 67 compares the load voltage in the lighting circuit 66 with a reference signal based on the signal from the dimming operation unit 21, and turns on / off the switching transistor of the lighting circuit 66 based on the comparison result. Thus, the output supplied from the lighting circuit 66 to the light source module 51 is controlled.

As shown in FIG. 2, the lighting circuit module 52 is disposed in the casing 50, for example, above the light source module 51 (base side) via a spacer 68 having insulating properties and heat insulating properties. Yes.

The globe 53 is made of transparent or light diffusing glass or synthetic resin having translucency.

In the illuminating device 1 having such a configuration, when the lamp unit 7 is mounted on the device body 5 side, first, the cap projection receiving portion 56a is positioned while positioning the engaging protrusions 56a with respect to the communication grooves 31b of the key grooves 31a. A base 56 is inserted into 31.

Thereby, for example, as shown in FIG. 9A, each engaging protrusion 56a is guided to the start end side of the key groove 31a through each communication groove 31b. At the same time, for example, as shown in FIG. 10A, corresponding terminal pins 57 to 59 are inserted into the start ends of the pin grooves 45 to 47, respectively.

Next, when the cap 56 of the lamp unit 7 is rotated relative to the cap receiving portion 31 of the socket 6, each engaging projection 56a gets over the locking step portion 31c and is guided to the end portion of the key groove 31a. (See FIG. 9B). Then, the base 56 is locked (fitted) in the base receiving part 31 by locking the engaging projection 56a to the locking step 31c. At the same time, for example, as shown in FIG. 10B, the terminal pins 57 to 59 are moved to the terminal ends of the pin grooves 45 to 47, and are electrically connected to the corresponding terminal portions 40a to 42a.

Since the height h2 of the base 56 is higher than the height h1 of the base receiving part 31 in the process in which the base 56 is locked in the base receiving part 31, the protruding end of the base 56 is first a heat radiator. It abuts on the bottom surface of the main body 11a. Next, when each engaging protrusion 56a gets over the locking step portion 31c and is led to the terminal end side of the key groove 31a, the lower end surface of the outward flange portion 32 is interposed between the engaging protrusion 56a and the key groove 31a. Stress based on the height difference to the keyway 31a is generated. Due to this stress, the socket 6 is attracted to the lamp unit 7 side and separated from the radiator body 11a, and each spring 35 is elastically deformed to the compression side (see FIG. 9B). And the urging | biasing force by the elastic deformation of this spring 35 is transmitted to the lamp unit 7 side via the socket 6, and the protrusion part of the nozzle | cap | die 56 is elastically pressed against the bottom face of the thermal radiation body 11a. Thereby, the housing | casing 50 of the lamp unit 7 and the heat radiator 11 are thermally connected, and the heat radiation path which transmits the heat which generate | occur | produced in each LED62 from the LED mounting board 61 to the heat radiator 11 via the housing | casing 50 is provided. It is formed.

According to such an embodiment, the terminal portions 40a to 42a are arranged on the periphery of the base receiving portion 31 to constitute the socket 6, and when the lamp unit 7 is attached to the apparatus main body 5 side, the housing 50 The base 56 protruding from the base side of the base is locked to the base receiving part 31 and the terminal pins 57 to 59 arranged on the periphery of the base 56 are electrically connected to the corresponding terminal parts 40a to 42a. By adopting such a configuration, it is possible to accurately realize the electrical connection of the lamp unit 7 to the apparatus body 5 side with a simple configuration.

That is, in addition to the locking structure of the base 56 with respect to the base receiving part 31, an electrical connection structure to the socket 6 side of the lamp unit 7 is separately provided, so that the terminal pins 57 to 59 and the like are connected to the base receiving part 31. On the other hand, it becomes a structure which is hard to receive the influence by the stress at the time of the nozzle | cap | die 56 being latched, and the electrical connection to the apparatus main body 5 side of the lamp unit 7 can be implement | achieved with a simple structure. In particular, the insertion direction of the terminal pins 57 to 59 with respect to the socket 6 is set in the same direction as the direction in which the stress at the time of locking the base receiving portion 31 and the base 56 acts (that is, the direction of the central axis O). Therefore, it is hardly affected by the stress at the time of locking, and measures such as excessive reinforcement of the terminal pins 57 to 59 can be avoided.

In this case, in addition to the power supply terminal portion 40a and the like, a grounding terminal portion 42a is disposed in the peripheral portion of the base receiving portion 31 on the socket 6, and similarly, in addition to the power supply terminal pin 57 and the like, a grounding terminal is provided. By arranging the pins 59 around the base 56 on the casing 50 of the lamp unit 7, the grounding of the lamp unit 7 can be accurately realized with a simple configuration. Therefore, noise countermeasures for the lighting circuit 66 and the creepage distance countermeasures for each device can be easily realized.

[Second Embodiment]
FIGS. 12 and 13 relate to the second embodiment of the present invention, FIG. 12 is a sectional view of the lighting device, and FIG. 13A is an explanatory view showing the relationship between the grounding terminal pin and the heat dissipation member at the start of lamp unit engagement. (B) is explanatory drawing which shows the relationship between the terminal pin for earth | ground at the time of lamp unit latching, and a heat radiating member. In the present embodiment, the grounding method of the lamp unit is mainly different from the first embodiment described above. In addition, about the structure similar to the above-mentioned 1st Embodiment, a same sign is attached | subjected and description is abbreviate | omitted.

In the present embodiment, a pin hole 56b is formed in the protruding end portion of the base 56, and a grounding terminal pin 70 electrically connected to the housing 50 side is inserted into the pin hole 56b so as to be movable back and forth. Has been. A case portion 71 corresponding to the pin hole 56 b is fixed inside the base 56, and the grounding terminal pin 70 is connected between the case portion 71 and the grounding terminal pin 70. A spring 72 for biasing to the side is interposed.

Here, as shown in the drawing, it is desirable that the end portion of the grounding terminal pin 70 protruding from the pin hole 56b is formed in a tapered shape.

Although not shown, the internal wiring terminal 14 a of the grounding terminal block 14 is electrically connected to the radiator 11.

In such a configuration, as shown in FIGS. 13A and 13B, when the base 56 is locked to the base receiving portion 31, the protruding end of the base 56 is elastically pressed against the bottom surface of the radiator body 11a. The grounding terminal pin 70 is elastically pressed against the bottom surface of the heat radiating body 11a to be electrically connected. In this case, by forming the end portion of the grounding terminal pin 70 in a tapered shape, the stress when pressed against the radiator body 11a can be concentrated. For example, the radiator 11 is an aluminum alloy or the like. Even in this case, the grounding terminal pin 70 can be accurately electrically connected to the radiator body 11a through the insulating layer such as an oxide film formed on the surface.

In addition, the illuminating device 1 shown to each above-mentioned embodiment is applicable also to the illuminating device which does not have a light control function by a user etc., In this case, the light control operation part 21, the terminal part 41a for control signals, Each component such as the control signal terminal pin 58 can be omitted as appropriate.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. 14A to 25B. The correspondence between the members and the like in the present embodiment and the members and the like in the first and second embodiments described above is as follows. That is, the below-described lighting fixture 130 is the above-described lighting device 1, the below-described fixture main body 132, the reflector 133, and the radiator 134 are the above-described device main body 5, and the below-described socket device 120 is the above-described socket 6. The lamp 110 with the cap is the lamp unit 7 described above, the radiator 134 described later is the radiator 11 described above, the socket body 121 described below is the socket body 30 described above, and the support hole 121a described below is the socket receiving portion described above. 31, an engagement means 121a1 described later is in the key groove 31a, a locking protrusion 121a4 described later is in the locking step 31c, a terminal case 123a described below is in the terminal box 40, and a terminal plate described later. 122b is the above-described power supply terminal portion 40a, a terminal case 123a described later is the above-described terminal box 41, and a terminal plate 122b described below is the above-described terminal portion for control signal 41a. A long hole 122a2 described later is formed in the above-described pin grooves 45 and 46, a concave fitting portion 111e described later is formed in the above-described base 56, an engagement protrusion 111f described later is formed in the above-described engagement protrusion 56a, and a power supply base member 114 described below. Corresponds to the power terminal pin 57 described above, and a signal cap member 115 described later substantially corresponds to the control signal terminal pin 58 described above.

First, the configuration of the lamp with cap attached to the socket device of this embodiment will be described. The lamp with cap of the present embodiment constitutes a flat thin structure lamp 110 with a pin-type cap member, and is rotated with respect to the socket device as shown in FIGS. 14A to 17. The lamp main body 111 having the engaging means 111f that is detachably attached by the operation, the light emitting section 112 provided in the lamp main body, the control device 113 provided in the lamp main body for controlling the lighting of the light emitting section, and the engaging means. The power supply cap member 114 is disposed on the circular locus of the lamp body and connected to the control device 113, and is positioned adjacent to the other side with the engaging means in between. The signal base member 115 is arranged on the circular locus of the lamp body and connected to the control device 113.

The lamp body 111 is a metal having good thermal conductivity in order to enhance heat dissipation, and in this embodiment, the planar shape of the cross section made of aluminum has a substantially circular dish shape, and the opening 111a on one end side. Is formed integrally with a substrate support 111b made of a circular concave step. The substrate support portion is formed such that the bottom surface of the concave step portion is a flat surface, and a protruding strip portion 111c having a ring shape is integrally formed around the substrate support portion. Further, the other end portion side of the lamp body 111 is integrally formed with a recessed fitting portion 111e protruding so that an annular support step portion 111d is formed on the outer bottom surface. The outer bottom surface of the recessed fitting portion 111e is formed as a flat surface so as to be in close thermal contact with and support the radiator on the appliance side.

Engaging means 111f is formed on the outer peripheral surface of the recessed fitting portion 111e. The engaging means is a means for detachably attaching to an engaging means 121a1 provided in the socket device 120 of the present embodiment to be described later. In this embodiment, the engaging means of the lamp with cap 110 is recessed. The engaging protrusion is integrally projected on the outer peripheral surface of 111e. (Hereinafter, the engaging means 111f of the lamp with cap is referred to as an “engaging protrusion 111f”).

As shown in FIG. 16, there are three engaging protrusions 111f with an equal interval with respect to the outer peripheral surface of the recessed fitting portion 111e having an angle of 120 ° in the diameter direction from the center o of the lamp body 111. The engaging protrusions 111f are formed in the same shape that is substantially square. The lamp body 111 having these configurations is processed by, for example, casting, forging, cutting, or the like. In the present embodiment, the aluminum die casting is used.

The light emitting unit 112 includes a solid light emitting element 112a and a substrate 112b on which the solid light emitting element is mounted. In the present embodiment, the solid-state light emitting element is configured by a light emitting diode (hereinafter referred to as “LED 112a”), and includes a plurality of, in this embodiment, six SMD type LEDs. The LED may be a so-called COB type that emits white light (including daylight white, daylight color, and light bulb color) using a plurality of LED chips and a phosphor excited by the LED chips.

The substrate 112b is made of a metal having good thermal conductivity, which is a flat thin aluminum plate in this embodiment, and an electric insulating layer such as a silicone resin is provided on the surface (the upper surface in FIG. 14B). A wiring pattern made of copper foil is formed on the wiring pattern, and the six LEDs 112a are mounted on the wiring pattern so as to form a substantially concentric circle at substantially equal intervals (FIG. 15). As a result, a light emitting unit 112 including a light emitting module in which six LEDs 112a are arranged so as to be substantially point-symmetric with respect to the center of the circular substrate is formed on a circular and plate-like substrate 112b.

The light emitting unit 112 configured as described above is disposed so as to be electrically insulated and in close contact with the substrate support unit 111b formed on one end side of the main body 111, and may be made of silicone resin or the like as necessary. It is fixed in close contact with the bottom surface of the substrate support 111b having a flat surface using a fixing means 112c such as a screw through a configured electrical insulating sheet or the like (not shown).

As a result, the light emitting portion 112 is disposed on one end portion side of the lamp main body 111, the back surface of the substrate 112b is securely adhered to the substrate supporting portion 111b of the lamp main body 111, and the substrate 112b is made of aluminum having good thermal conductivity. In combination with this, the heat generated from the LED 112a can be effectively transmitted to the lamp body 111 made of aluminum and dissipated. With the above configuration, the optical axis yy of the light emitting unit 112 made of the substrate 112b on which the six LEDs 112a are mounted substantially coincides with the central axis xx of the lamp main body 111, and the light emitting surface is substantially circular as viewed from above. Is formed.

As shown in the circuit block diagram of FIG. 17, the control device 113 includes a lighting circuit 113a that converts an AC voltage of 100V into a DC voltage of 24V and supplies a constant DC current to the LED 112a, and a light emitting unit based on an external control signal. In this embodiment, the control circuit 113b is configured to perform lighting / extinguishing / lighting / dimming. As shown in FIG. 14B, the electronic component 113c constituting the lighting circuit 113a and the control circuit 113b is mounted on a circular flat glass epoxy circuit board 113d. A circuit pattern is formed on one side or both sides of the circuit board 113 d, and a plurality of small electronic components 113 c are mounted on the mounting surface and disposed in the lamp body 111.

In the present embodiment, these electronic components 113c are arranged in the lamp body 111 as follows. That is, a part that generates heat, for example, the switching transistor 113c1 is separated from the circuit board 113d by the lead wire and is brought into close contact with the inner bottom surface of the lamp body 111. A relatively large lead component, for example, the current transformer 113c2, is accommodated in the recessed fitting portion 111e in the lamp body. Thereby, the heat of the switching transistor 113c1 accompanied by heat generation is radiated to the outside from the lamp body 111 made of aluminum, and the temperature rise is suppressed. At the same time, a large part is accommodated in the recessed fitting portion 111e, and a flat thin structure of the lamp body 111 is formed.

The circuit board 113d configured as described above includes a heat-resistant and electrically insulating synthetic resin, in this embodiment, the lamp body 111 via the support legs 113e made of PBT (polybutylene terephthalate). It is disposed and supported below the substrate 112b and at a predetermined distance from the inner bottom surface of the lamp body. In FIG. 14B, reference numeral 113f denotes a heat shield, which is formed in a disc shape from a heat-resistant and electrically insulating resin such as PBT and having a heat insulating property, and has a gap in the center of the upper surface of the circuit board 113d. By interposing between the substrate 112b of the light emitting unit 112 and the circuit board 113d, the thermal influence between the substrate 112b and the circuit board 113d is blocked. In addition, the output terminal of the circuit board 113d which comprises the control apparatus 113, and the input terminal of the board | substrate 112b of the light emission part 112 are connected by a lead wire (not shown).

Further, the lighting circuit 113a and the control circuit 113b are configured as shown in the circuit block diagram of FIG. That is, the lighting circuit 113a includes an AC / DC converter, a rectifier circuit, a constant current supply circuit, and the like. The lighting circuit 113a converts the AC voltage 100V of the commercial power source E into a DC voltage 24V and supplies a constant current to each LED 112a. The control circuit 113b is composed of a microcomputer or the like, generates a control signal for turning on / off / dimming based on a control signal transmitted from the outside, and supplies the control signal to the lighting circuit 113a. Based on this control signal, the lighting circuit 113a performs lighting control so that the LED 112a of the light emitting unit 112 is turned on / off / dimmed. In the present embodiment, the control signals transmitted from the outside are converted into signal lines by operating a dimmer 137 for an existing incandescent bulb installed on the wall surface of the room. It is transmitted to the control circuit 113b via S1. In the figure, reference numeral 114 denotes a power base member for connecting to a commercial power source via the socket device 120, and 115 denotes a signal base member for inputting a control signal via the socket device 120.

Further, the control device 113 in the present embodiment has a signal base member 115 for inputting a control signal from the external dimmer 137 on the input side of the control circuit 113b. The circuit 113b is connected in parallel to the power source, and the signal cap member 115 can be operated without connecting a signal line. For this reason, when the dimmer 137 is not installed, it can be operated as a normal lamp with a base without a dimming function.

As shown in FIG. 14B, the power base member 114 is made of a conductive metal such as copper or brass, or brass in this embodiment, and has a cylindrical shaft portion 114a and a disk-shaped base portion 114b. It consists of a pair of pin-shaped cap pins. The power base member 114 is supported by being integrally embedded by resin molding into a support substrate 114c formed in a disc shape with a heat-resistant and electrically insulating synthetic resin such as PBT. A pair of support substrates 114c in which the power base member 114 is integrally embedded is prepared, and a circular support step portion 111d of the lamp body 111 is formed adjacent to one side of the engagement protrusion 111f. The pair of support holes 111d1 are respectively fitted and fixed with an adhesive made of silicone resin, epoxy resin, or the like.

Accordingly, as shown in FIG. 16, the pair of power base members 114-1 and 114-2 is engaged with the engaging protrusion 111f-2 of the lamp 110 with cap, that is, on one side with the engaging means in between. Located adjacent to each other and disposed on the locus of a circle of the lamp body 111. A pair of cylindrical shaft portions 114a of the power base member 114 are provided so as to protrude outward from the outer bottom surface of the lamp body 111, and each base portion 114b is electrically connected to the control device 113 by the lead wire w1. Is done. According to the power base member 114 of the present embodiment, the tip of the pin-shaped shaft portion 114a does not protrude from the lamp main body 111 as shown by a one-dot chain line in FIG. The risk that the base pin is deformed is reduced, and the mounting failure of the lamp with the base due to the base deformation to the socket device can be reduced. In this configuration, a signal cap member 115 to be described later is configured in the same manner, and mounting problems can be reduced.

As shown in FIG. 14C, the signal base member 115 is made of a conductive metal such as copper or brass having the same shape and dimensions as the power source base member 114 described above, and in this embodiment is made of brass, and has a cylindrical shape. And a pair of pin-shaped cap pins having a shaft portion 115a and a disc-shaped base portion 115b. The signal base member 115 is supported by being integrally embedded by resin molding in a support substrate 115c formed in a disc shape with a heat-resistant and electrically insulating synthetic resin such as PBT. A pair of support substrates 115c in which the signal base member 115 is embedded integrally is prepared, and a circular support step portion 111d of the lamp body 111 is formed adjacent to the other side of the engagement protrusion 111f. Are fitted into the pair of support holes 111d1 and fixed with an adhesive made of silicone resin, epoxy resin, or the like.

As a result, as shown in FIG. 16, the pair of signal cap members 115-1 and 115-2 is engaged with the engaging protrusion 111f-2 of the lamp 110 with cap, that is, on the other side with the engaging means in between. Located adjacent to each other and disposed on the locus of a circle of the lamp body 111. Further, the circle locus on which the signal base member 115 is disposed is disposed on the same circle locus as the circle locus of the power base member 114, and is configured not to hinder downsizing. In addition, you may make it arrange | position on the locus | trajectory of a different circle in the range which does not inhibit miniaturization. A pair of cylindrical shaft portions 115a of the signal base member 115 are provided so as to protrude outward from the outer bottom surface of the lamp body 111, and each base portion 115b is formed by the control device 113 and a lead wire (not shown). Electrically connected.

As described above, as shown in FIG. 16, the power base member 114 and the signal base member 115 are disposed on both sides of the engaging projection 111f-2 with the engaging projection 111f-2 (engaging means) therebetween. They are spaced apart from each other with a predetermined dimension and are positioned adjacent to each other and are arranged on the locus of a circle of the lamp body 111. As a result, the lead wire w1 connecting the power base member 114 and the control device 113 and the lead wire connecting the signal base member 115 and the control device 113 are concentrated on both sides of the engaging projection 111f-1 at one location. Thus, the wiring of the power supply line and the signal line can be simplified, and the downsizing of the lamp 110 with cap can be achieved.

Incidentally, when the power supply cap member 114 and the signal cap member 115 are positioned opposite to each other in the diametrical direction, it is necessary to wire each electric wire at a position separated in the diametrical direction, and each electric wire is connected to the lamp body 111. Therefore, a space for routing is required. This complicates the wiring work and makes it difficult to reduce the size of the lamp body.

At the same time, the power base member 114 and the signal base member 115 are positioned with a predetermined dimension apart from each other on both sides of the engaging protrusion 111f-2 with the engaging protrusion 111f-2 interposed therebetween. Therefore, it is possible to make it difficult for the signal lead wire or base member 115 to pick up noise that is likely to be generated from the power supply lead wire or base member 114.

The angular dimensions of the power base member 114, the signal base member 115, and the three engaging protrusions 111f in this embodiment, that is, the angular dimension on the side of the base lamp 110 are arranged as follows. That is, as shown in the bottom view of the lamp 110 with cap shown in FIG. 16, the two engaging protrusions 111f-1 and the engaging protrusions 111f-1 out of the engaging protrusions 111f formed at an equal interval of 120 °. When expressed by an angle in the diameter direction from the center o starting from the joint protrusion 111f-2, an angle θ1 in the diameter direction of one power base member 114-1 adjacent to the engagement protrusion 111f-1 is 45 °. The angle θ2 in the diameter direction of the other power source base member 114-2 (the other one separated from the engaging protrusion 111f-1) is 95 °.

In addition, the angle θ1 in the diameter direction of one signal cap member 115-1 adjacent to the engagement projection 111f-2 is 45 °, and the other signal cap member 115 (the other one spaced apart from the engagement projection 111f-2). The angle θ2 formed by the −2 diameter direction is 95 °.

The angles θ1 and θ2 are the lines aa passing through the central axis of each engaging projection 111f, and the shafts 114a and 115a of the cylindrical portions of the power base member 114 and the signal base member 115, respectively. The angle formed by the line bb passing through the heart. Further, the rotation angle α1 of the lamp with cap 110 with respect to the socket device 120 is 15 °. The cylindrical shaft portions 114a and 115a have a diameter φ1 of about 2.5 mm, a protrusion dimension h1 from the support step 111d of the lamp body 111 is about 6 mm, and the outer diameter d1 of the recessed fitting portion 111e is about 60 mm. . The above-mentioned angles and dimensions are allowed to be within the range of manufacturing error. In the above description, the positional relationship between the pair of power base members 114 and the pair of signal base members 115 may be reversed.

Next, as shown in FIGS. 14A and 14B, the cover member 116 constitutes a globe of the lamp. The cover member 116 is a translucent member having translucency or a translucent member having light diffusibility, which is milky white in this embodiment. It is made of glass and is formed in a flat curved surface shape having an opening 116a on one end side. The edge surrounding the opening 116a is a cylindrical side wall 116b, and the front surface facing the opening is formed in a smooth curved surface. The cover member 116 configured as described above is provided so as to cover the light emitting portion 112 of the lamp main body 111, and the opening 116 a has a predetermined overlap margin on the inner surface of the protruding portion 111 c on one end side of the lamp main body 111. Then, they are fitted and fixed using an adhesive such as silicone resin or epoxy resin. As described above, the lamp body 111 is provided with the light emitting part 112 including the cover member 116 and the LED 112a on one end side, and the flat thin thin plate is provided with the pin-shaped power base member 114 and the signal base member 115 on the other end side. A lamp with cap 110 having a shape structure is formed.

Next, the configuration of the socket device in this embodiment will be described. The socket device according to the present embodiment is configured so that the pin-shaped power base member 114 and the signal base member 115 of the lamp 110 with the base are electrically connected and incorporated in the lighting fixture 130. As shown in FIG. 18A to FIG. 23, as shown in FIGS. 18A to 23, a socket body 121 having an engaging means 121a1 to which the lamp 110 with a cap 110 is detachably attached by a rotating operation, on one side with the engaging means in between. Adjacent to the other side with the engaging means in between, the power supply terminal member 122 that is located on the circle locus of the socket body 121 and is connected to the power supply base member 114 of the lamp with cap 110 is connected. The signal terminal member 123 is disposed on the circle locus of the socket body 121 and is connected to the signal base member 115 of the lamp 110 with the base.

The socket body 121 is a synthetic resin having heat resistance and weather resistance and good electrical insulation. In this embodiment, the planar shape of the cross section made of PBT is substantially circular, and a support hole penetrating through the center portion. It is formed in a ring shape having 121a. The inner diameter dimension d2 of the support hole 121a is formed to be slightly larger than the diameter dimension d1 of the projecting portion of the support step portion 111d of the lamp body 111, that is, the outer peripheral surface of the recessed fitting portion 111e (d1 <d2). Further, the depth h3 of the support hole 121a is formed to be slightly smaller than the height h2 of the support step 111d of the lamp body 111 (h2> h3).

Further, on the surface side of the socket body 121 (upper surface in FIG. 19A), the outer peripheral portion of the ring-shaped surface is integrally raised to form a side wall 121f. This side wall has a pin-shaped shaft 114a, 115a on one side of a power base member 114 and a signal base member 115 of a lamp 110 with a base, which will be described later, and a power terminal member 122 and a signal terminal member 123 of the socket device 120. The side wall height h4 is formed such that the shaft portion on one side is not inserted into each terminal member of the socket device. In the present embodiment, the protrusion dimension h1 of the base members 114 and 115 is about 6 mm, and the height h4 of the side wall is about 5 mm.

Also, the engagement means 121a1 of the socket device 120 is formed on the inner peripheral surface of the support hole 121a. The engaging means is means for detachably mounting the lamp with cap 110 to the socket device 120 by rotating operation together with the engaging means 111f of the lamp with cap 110. In this embodiment, the engaging means of the socket device 120 is attached. The engaging means is configured by integrally forming an engaging groove 121a1 on the inner peripheral surface of the support hole 121a. (Hereinafter, the engaging means 121a1 of the socket device is referred to as "engaging groove 121a1").

As shown in FIG. 18A, the engagement groove 121a1 has the same shape with an equal interval with respect to the inner peripheral surface of the support hole 121a having an angle of 120 ° in the diameter direction from the center o of the socket body 121. Three things are formed. As shown in FIG. 19B, each of the engagement grooves 121a1 has an insertion portion 121a2 formed of a vertical groove that opens at the end face of the support hole 121a, and a substantially horizontal direction (rotation direction of the lamp body 110) continuously from the insertion portion. The formed engaging portion 121a3 made of a lateral groove and the lower corner portion that becomes the boundary between the L-shaped insertion portion 121a1 and the engaging portion 121a3, in other words, the portion that becomes the entrance of the engaging groove 121a1 It consists of a locking projection 121a4 having a mountain shape. Note that the engaging protrusion 111a of the lamp main body 111 inserted from the insertion portion 121a2 is guided to slide in contact with the engaging protrusion 121a4 having a chevron shape, and is introduced into the engaging portion 121a3 beyond the apex of the chevron shape. The locking projection 121a4 that is configured to have a mountain shape prevents half-hanging as will be described later and prevents it from being inadvertently removed during engagement.

Further, on the back side of the socket main body 121 (the lower surface in FIG. 19A), a support member 121b for supporting the socket main body 121 with respect to the installation portion, in this embodiment, the radiator 134 of the lighting fixture 130 described later. Is provided. Three support members 121b are formed on the lower surface of the ring-shaped socket body 121 at an angle of 120 ° in the diameter direction from the center o of the socket body 121, and two of them are formed. The support member 121b is provided at a position close to the engagement groove 121a1. Each support member 121b has the same shape, and as shown in FIGS. 21A and 21B, includes a cylindrical cylinder 121b1, a bolt 121b2 inserted into the cylinder, and a coil spring 121b3 inserted through the bolt. .

The cylinder 121b1 is formed by integrally standing on the back side of the ring-shaped surface of the socket body 121 by resin molding, and an end plate 112a4 is locked to the opening end of the top surface of the cylinder 121b1. . The tip of the bolt 121b2 penetrates the end plate, the bolt is provided so as to move up and down in the cylinder, and the tip of the bolt protrudes from the upper surface side of the cylinder 121b1. With this bolt 121b2, the socket device 120 is supported on the installation portion, in the present embodiment, the radiator 134 of the lighting fixture 130. The radiator 134 is formed with a screw hole for screwing the bolt 121b2 on the back side (the lower surface in FIGS. 21A and 21B). The bolt 121b2 is screwed into the screw hole so that the socket device 120 can Supported by

As described above, the socket device 120 supported by the radiator 134 of the lighting fixture 130 is attached to the lamp 110 with the cap, so that the flat outer bottom surface of the recessed fitting portion 111e of the lamp body 111 becomes the back surface of the radiator 134. Is pressed by the elastic force of the spring 121b3. That is, as shown in FIG. 21A, the recessed fitting portion 111e of the lamp body 111 is inserted into the support hole 121a of the socket device 120, the engagement protrusion 111f of the lamp body 111 is aligned with the engagement groove 121a1 of the socket device 120, The engaging protrusion 111f is inserted from the insertion portion 121a2 and further rotated leftward in the drawing. As a result, the engaging projection 111f gets over the chevron-shaped locking projection 121a4, is introduced into the engaging portion 121a3, and the lamp 110 with cap is mounted on the socket device 120. At this time, the socket main body 121 is pressed downward (in the direction of arrow a in the figure) by the lower surface of the engaging protrusion 111f of the lamp main body 111, and is separated from the rear surface side of the heat radiating member 134 to form a gap s. At the same time, the spring 121b3 of the socket body 121 is compressed by this pressing, and the lamp body 111 is strongly pressed against the back surface of the radiator 134 by the repulsive force (force in the direction of arrow b in the figure). Accordingly, the flat outer bottom surface of the recessed fitting portion 111e of the lamp body made of aluminum and the back surface of the radiator 134 are supported in thermal contact with each other, and heat generated from the plurality of LEDs 112a is effectively radiated to the outside. This makes it possible to use LEDs with high brightness and high output.

When the lamp with cap 110 is removed from the socket device 120, the lamp main body 111 is rotated in the opposite direction to the above, and the engaging protrusion 111f of the lamp main body 111 is moved along the engaging portion 121a3 of the socket device 120. What is necessary is just to move and pull out from the insertion part 121a2, and pull out the recessed fitting part 111e of the lamp | ramp main body 111 from the support hole 121a of the socket apparatus 120. FIG. When the lamp with cap 110 is removed from the socket device 120, the compression of the spring 121b3 is released and the original position is restored as shown in FIG. 21B, and the upper surface of the socket body 121 is supported on the back side of the radiator 134 without gaps. Is done.

Next, the power supply terminal member 122 to which the power supply base member 114 of the lamp with cap 110 is connected includes a small terminal case 122a formed integrally with the socket body 121 and a terminal case as shown in FIG. 11A. It is comprised with the terminal board 122b accommodated. The terminal case 122a is integrally provided adjacent to the rear surface side (FIG. 20) of the ring-shaped surface of the socket main body 121, accommodates the terminal plate 122b in the case, and inserts a wire into one end. The portion 122a1 is integrally formed.

The terminal plate 122b is a member for contacting the shaft portion 114a of the power supply cap member 114 to supply the commercial power to the lamp 110 with cap, and has a certain rigidity and spring property and good conductivity. In the present embodiment, a metal such as copper, brass, phosphor bronze, etc. is made of phosphor bronze. The terminal plate 122b is formed by bending a forked terminal piece 122b1 formed by bending the whole so as to have a substantially U shape, and a distal end portion of the terminal piece in a substantially "<" shape in a direction facing each other. The contact portion 122b2 and the locking piece 122b3 formed on the bottom of the U-shape are configured as a screwless SL terminal.

The terminal plate 122b configured as described above is a terminal integrally formed adjacent to one side of the engagement groove 121a1-1 on the rear surface side (FIG. 20) of the ring-shaped surface of the socket body 121. Fits into the case 122a. The terminal case 122a is configured by a circular arc-shaped concave portion formed along the ring-shaped socket body 121, and includes an electric wire insertion portion 122a1 and a long hole 122a2 that opens on the surface side of the socket body 121 (FIG. 19A). The lid body 122a3 closes the opening on the back side.

The long hole 122a2 is formed in an arc shape having a semicircular opening at both ends, and is formed so that the small and small terminal plate 122b does not fall from the long hole. The width dimension is formed such that the columnar shaft portion 114a of the power source cap member 114 in the lamp with cap 110 can be inserted and moved. The lid 122a3 closes the opening on the back surface side of the terminal case 122a, and integrally forms the wire guide piece 122a4 on the upper surface located on the wire insertion portion 122a1 side.

The pair of terminal cases 122a and terminal plates 122b configured as described above are prepared in pairs, and each terminal plate 122b is accommodated in each terminal case 122a so as to face the long hole 122a2. Then, the opening on the back surface side of the terminal case 122a is closed by the lid body 122a3 and fixed with an adhesive made of silicone resin, epoxy resin, or the like. Accordingly, as shown in FIG. 20, the pair of power supply terminal members 122-1 and 122-2 are adjacent to the engagement groove 121a1-1 of the socket device 120, that is, one side with the engagement means interposed therebetween. And is disposed on a circular locus of the socket body 121.

Next, the signal terminal member 123 to which the signal cap member 115 of the lamp with cap is connected is configured in the same manner as the power terminal member 114, and the configuration of the terminal case 123a and the terminal plate 123b is shown in FIG. In FIG. 22B, the sign of each component in the signal terminal member 123 is displayed in parentheses, and the detailed description is omitted.

With the above configuration, the signal terminal member 123 to which the signal base member 115 of the lamp with cap 110 is connected has a pair of terminal cases 123a provided adjacent to the ring-shaped surface of the socket body 121, and terminals. The terminal plate 123b accommodated in the case, and the pair of signal terminal members 123-1 and 123-2 are engaged with the engaging groove 121a1-1 of the socket device 120, that is, on the other side with the engaging means in between. Located adjacent to each other and disposed on a circular locus of the socket body 121. The locus of the circle in which the signal terminal member 123 is disposed is disposed on the same locus as the circle of the power terminal member 122, and is configured not to hinder downsizing. In addition, you may make it arrange | position on the locus | trajectory of a different circle in the range which does not inhibit miniaturization.

As described above, as shown in FIG. 20, the power terminal member 122 and the signal terminal member 123 are connected to each other on both sides of the engagement groove 121a1-1 with the engagement groove 121a1-1 (engagement means) therebetween. The socket main body 121 is arranged on a locus of a circle so as to be spaced apart from each other with a predetermined dimension and to be adjacent to each other.

The angular dimensions of the power supply terminal member 122, the signal terminal member 123, and the three engagement grooves 121a1 in this embodiment, that is, the angular dimension on the socket device 120 side are arranged as follows. That is, as shown in the surface view of the socket device in FIG. 18A, the two engagement grooves 121a1-1 and the engagement protrusions among the engagement grooves 121a1 formed at equal angles of 120 ° are provided. When expressed in an angle in the diameter direction from the center o starting from 121a1-2, the angle θ3 in the diameter direction of one power supply terminal member 122-1 adjacent to the engagement groove 121a1-1 is 25 °, and the other ( The angle θ4 in the diametrical direction of the other power source terminal member 122-2 separated from the engagement groove 121a1-1 is 75 °.

In addition, the angle θ3 in the diametrical direction of one signal terminal member 123-1 adjacent to the engagement groove 121a1-2 is 25 °, and the other (the other one separated from the engagement groove 121a1-2) signal terminal member 123. The angle θ4 toward the diameter direction of −2 is 75 °.

The angles θ3 and θ4 are the insertion sides of the line cc passing through the center axis of the insertion portion 121a2 of the engagement groove 121a1 and the long holes 122a2 and 123a2 of the power terminal member 122 and the signal terminal member 123, respectively. This is an angle formed by a line dd passing through the center of each semicircular portion of the portion (the portion where the pin-shaped shaft portions 114a and 115a of the lamp with cap 110 are first inserted). Further, the rotation angle α1 of the lamp with cap 110 with respect to the socket device 120 is 15 °. The inner diameter d2 of the support hole 121a is about 65.5 mm. The above-mentioned angles and dimensions are allowed to be within the range of manufacturing error. In the above description, the positional relationship between the pair of power supply end members 122 and the pair of signal terminal members 123 may be reversed.

Also, the power supply wire w3 is connected to the power supply terminal member 122 configured as described above, and the signal wire w4 is connected to the signal terminal member 123. As shown in FIG. 20, in the power supply wire w3, the power supply wire w3-1 connected to one power supply terminal member 122-1 adjacent to the engagement groove 121a1-1 is pulled out from the wire insertion portion 122a1. And is led out along the upper surface of the other power source terminal member 122-2 (the other one separated from the engagement groove 121a1-1), that is, the upper surface of the lid 122a3, and is further guided by the wire guide piece 122a4. It is clamped between the wire guide piece 122a4 and the side wall of the socket body 121 to be pulled out and pulled out. The power supply wire w3-2 connected to the other power supply terminal member 122-2 (the other one separated from the engagement groove 121a1-1) is drawn out from the wire insertion portion 122a1, and the power supply drawn out earlier is supplied. It is pulled out by being bundled up and down together with the electric wire w3-1 for use.

Each of the power supply wires w3-1 and w3-2 is led out along the upper surface of the power supply terminal member 122-2, and is bundled up and down by the wire guide pieces 122a4, so that the socket body 121 having a ring shape is formed. The socket body is housed within the width dimension of the back surface of the ring-shaped surface of the ring, so that the power supply wires are compactly routed without jumping out from the outer peripheral surface of the socket device, and the drawn power supply wires are hidden. Therefore, the socket device 120 can be downsized.

The signal wire w4 is connected in the same manner as the power wire w3. That is, the signal wire w4-1 connected to one signal terminal member 123-1 adjacent to the engagement groove 121a1-2 is pulled out from the wire insertion portion 123a1, and the other (separated from the engagement groove 121a1-2). The other) signal terminal member 123-2, which is led out along the upper surface of the lid 123a3, and is further guided by the wire guide piece 123a4 and between the wire guide piece 122a4 and the side wall of the socket body. Is pulled out by being held between. The signal wire w4-2 connected to the other signal terminal member 123-2 (the other member spaced apart from the engagement groove 121a1-2) is drawn from the wire insertion portion 123a1 and the signal drawn earlier. The upper and lower wires w4-1 are bundled up and down and pulled out.

These signal wires w4-1 and w4-2 are also led out along the upper surface of the signal terminal member 123-2 and are bundled up and down by the wire guide pieces 122a4. 121 is accommodated within the width of the back surface of the ring-shaped surface of the ring 121, and the signal wire is compactly wired without jumping out from the outer peripheral surface of the socket device, so that the socket device 120 can be reduced in size. .

In addition, each electric wire w3, w4 has the insulation coating at the tip thereof peeled off, and is inserted into the electric wire insertion portions 122a1, 123a1 of the respective terminal cases 122a, 123a to be locked and connected to the SL terminal locking pieces 122b3, 123b3. The Moreover, each electric wire w3 and w4 pulled out from the socket apparatus 120 is connected to terminal blocks 135 and 136 of the lighting fixture 130 mentioned later.

Further, as shown in FIG. 20, the power supply wire w3 and the signal wire w4 are arranged such that the power supply terminal member 122 and the signal terminal member 123 are formed by engagement grooves 121a1-1 (engagement means). With the gap therebetween, the engagement grooves 121a1-1 are spaced apart from each other with a predetermined dimension and are positioned adjacent to each other on the locus of the circle of the socket body 121. As a result, the wiring of the power supply wire w3 and the signal wire w4 can be concentrated on one side of the engagement groove 121a1-1 at one place, and the wiring can be simplified. It becomes possible to achieve downsizing of 110.

Incidentally, when the power supply terminal member 122 and the signal terminal member 123 are positioned opposite to each other in the diametrical direction, it is necessary to wire the wires w3 and w4 at positions separated in the diametrical direction. Since it is necessary to route in the socket body 121, a space for routing is required. This complicates the wiring work and makes it difficult to reduce the size of the socket body.

At the same time, the power terminal member 122 and the signal terminal member 123 are spaced apart from each other with predetermined dimensions on both sides of the engagement groove 121a1-1 with the engagement groove 121a1-1 (engagement means) therebetween. Therefore, it is possible to make it difficult for the signal wire w4 and the signal terminal member 122 to pick up noise that is likely to be generated from the power wire w3 and the power terminal member 123.

As described above, the power terminal member 122 and the signal terminal member 123 are configured so that the recessed fitting portion 111e of the cap-equipped lamp 110 is inserted into the support hole 121a of the socket device 120 as shown in FIG. As shown in FIGS. 24A and 24B, the lamp with cap 110 is rotated at an angle α1, an angle of 15 ° in this embodiment, in the direction of the arrow in the figure, with the center point o of the socket body 121 as the center. Let As a result, the power base member 114 of the lamp with cap 110 is inserted from the elongated hole 122 a 2 of the power terminal member 122 and moved to the terminal plate 122 b, and at the same time, the signal base member 115 is moved to the length of the signal terminal member 123. It is inserted from the hole 123a2 and moves to the terminal board 123b. Then, as shown in FIGS. 21A and 21B, the cylindrical shaft portions 114a and 115a of the power base member 114 and the signal base member 115 are inserted into the bifurcated terminal pieces 122b1 and 123b1, respectively. And stop at the position over the opposite “U” -shaped contact portions 122b2 and 123b2, and in this state, both side portions of the shaft portions 114a and 115a and the two contact portions 122b2 and 123b2 come into contact with each other. And the signal section are electrically connected at the same time. As shown in FIG. 21A, this contact position is made when the engagement protrusion 111f of the lamp body 111 abuts and engages with the end of the engagement portion 121a3 of the engagement groove 121a1 in the socket body 121.

At the same time as the electrical connection between the cap-equipped lamp 110 and the socket device 120 is performed as described above, the mechanical holding, that is, the cap-equipped lamp 110 is attached to the socket device 120. At this time, in order to detachably attach the lamp 110 with the cap to the socket device 120, the relationship between the engaging means (the engaging protrusion 111f and the engaging groove 121a1) and the electrical connection is as follows. Thus, a half-hanging state when the lamp with cap 110 is attached to the socket device 120 is avoided.

That is, as shown in FIG. 21A, the electrical connection, that is, the contact between the shaft portion 114a of the power base member 114 and the terminal plate 122b and the contact between the shaft portion 115a of the signal base member 115 and the terminal plate 123b are related. The mating protrusion 111f is formed after overcoming the mountain-shaped locking protrusion 121a4 of the engaging groove 121a1. Therefore, in the middle of the rotation operation, the user receives resistance against the rotation operation when the engagement protrusion 111f gets over the locking protrusion 121a4, so that the user misunderstands that the engagement is made and stops the rotation operation. There is a fear. However, at that time, since the electrical connection has not been made yet, the lamp does not light up. For this reason, the user understands that the engagement is not yet complete, and performs the rotation operation to the end. As a result, the turning operation is prevented from being stopped halfway, and it is possible to avoid a half-hanging state in the engaging means (a state before the locking projection 111f gets over the mountain-shaped locking projection 121a4). Thereby, the lamp | ramp 110 with a nozzle | cap | die can be reliably mounted | worn with respect to the socket apparatus 120. FIG.

Also, by enabling smooth operation in the rotation operation, a simple operation by a one-touch operation is realized, and a half-hanging state of the engaging means and a half-contact state of the electrical connection are avoided. That is, the resistance in the turning operation is the resistance received when the engaging protrusion 111f gets over the locking protrusion 121a4, and the contact portion 122b2 of the "<" shape where the shaft portions 114a and 115a face each other on the terminal plates 122b and 123b. , 123b2 is received in two stages of resistance. For this reason, in the middle of the rotation operation, the user may receive the two-stage resistance, so that the user may misunderstand the engagement twice and stop the rotation operation. In particular, the second resistance is a resistance for making electrical contact. If the rotation operation is stopped by misunderstanding this, the half-contact state (the shaft portions 114a and 115a face each other on the terminal plates 122b and 123b " There is a risk that a state before the contact portions 122b2 and 123b2 of “<” will be overcome.

In the present embodiment, in order to prevent these, the contact of the "<" shape where the shaft portions 114a and 115a face each other against the first resistance received when the engaging protrusion 111f gets over the engaging protrusion 121a4. It was configured to reduce the second resistance received when getting over the section. Specifically, when the first resistance is 100%, the second resistance is set to be about 70% or less.

Thereby, in the turning operation, the second resistance can be easily overcome by the rotational force against the first resistance and the inertia of the rotation, and the turning operation can be performed by receiving only the first resistance. It was possible to realize the rotation operation by one-touch operation. At the same time, the second resistance can be easily overcome, so that the shaft portions 114a and 115a can overcome the "U" -shaped contact portions 122b2 and 123b2 facing each other at once, thereby ensuring an electrical half-contact state. Can be avoided.

Further, the rotation operation is stopped by the engagement protrusion 111f coming into contact with the end of the engagement portion 121a3 of the engagement groove 121a1, and at the time of this contact, the engagement protrusion 111f made of aluminum and the synthetic resin are used. When the engaging groove 121a1 hits, a “catch” and a metallic sound are generated. Thereby, it is possible to inform the user with a sound that the engaging means is engaged, that is, the state in which the cap-equipped lamp 110 is completely attached to the socket device 120 with a sound.

Next, the construction of the lighting fixture composed of the cap-equipped lamp 110 and the socket device 120 configured as described above will be described. As shown in FIGS. 25A and 25B, 130 is a small downlight type lighting fixture embedded in a ceiling surface X of a store or the like, and a fixture main body having a metal box shape having an opening 131 on the lower surface. 132, a metal reflector 133 fitted into the opening 131, and a radiator 134 provided on the upper surface of the reflector 133. The socket device 120 having the above-described configuration is provided at a substantially central portion on the back surface of the radiator 134. Installed. The reflector 133 is made of a metal having good thermal conductivity, for example, a metal plate such as stainless steel, and its upper surface is attached to the side surface of the radiator 134.

The radiator 134 serves as a heat sink, and is composed of a metal having good thermal conductivity, which is a block made of thick aluminum in the present embodiment, and a large number of radiation fins 134a are integrally formed on the outer periphery. Has been. Further, the heat radiator 134 has a screw hole for attaching the socket device 120 on the back surface side (the lower surface in FIGS. 25A and 25B), and the bolt 121b2 of the socket device 120 is screwed into the screw hole. Supported (FIGS. 21A and 21B). Further, a part of the side surface of the heat radiator 134 is cut away to integrally form an installation portion 134b for installing the terminal block. The terminal block includes a power supply terminal block 135 and a signal terminal block 136. You may comprise so that the terminal block for sending wiring may be provided further.

Also, the power supply wire w3 drawn from the socket device 120 is connected to the output terminal of the power supply terminal block 135, and the F cable F1 wired indoors is connected to the input terminal. The signal wire w4 drawn from the socket device 120 is connected to the output terminal of the signal terminal block 136, and the signal line S1 is connected to the input terminal.

As shown in FIG. 17, when the F cable is connected to the commercial power source E and the power base member 114 is connected to the power terminal member 122 of the socket device 120, the power base member 114 is connected from the power terminal member 122. The power is supplied to the lamp 110 with cap through. When the signal line S1 is connected to the dimmer 137 and the signal base member 115 is connected to the signal terminal member 123 of the socket device 120, the base is connected from the signal terminal member 123 via the signal base member 115. A control signal from the dimmer 137 is transmitted to the attached lamp 110. The dimmer 137 is a dimmer used for an existing incandescent bulb, and is installed on the wall surface of the room so that a user can operate it. In addition, each electric wire w3 and w4 is pulled out from the electric wire outlet hole 138 formed in the heat radiator 134.

In the lighting fixture 130 configured as described above, the socket device 120 is mounted with the flat and thin-structured lamp 110 having the above-described LED as a light source and provided with a pin-shaped power supply cap member 114 and a signal cap member 115. To do. As shown in FIGS. 23, 24A and 24B, the pair of power base members 114 of the lamp with cap 110 are inserted into the long holes 122a2 of the socket device 120 and the pair of signal base members 115 are connected to the socket device 120, as shown in FIGS. The shafts 114a and 115a are inserted into the long holes 122a2 and 123a2, respectively. At the same time, the three engaging protrusions 111f of the cap-mounted lamp 110 are respectively inserted into the respective insertion portions 121a2 so as to face the three engaging grooves 121a1 of the socket device 120.

At this time, since the side wall 121 f is formed on the surface side of the socket device 120, the pins ( shaft portions 114 a and 115 a) on one side of the power source cap member 114 and the signal cap member 115 of the lamp with cap 110 are connected to the socket device 120. The power terminal member 122 and the signal terminal member 123 are not accidentally inserted, and the occurrence of electric shock is prevented.

Then, the lamp with cap 110 is rotated by an angle of 15 ° in the direction of the arrow in the figure. As a result, as shown in FIG. 21A, the shaft portions 114a and 115a of the power base member 114 and the signal base member 115 are inserted into the bifurcated terminal pieces 122b1 and 123b1, respectively, and the terminal pieces are opposed to each other. Is stopped at a position over the contact portions 122b2 and 123b2, and in this state, both side portions of the shaft portions 114a and 115a and the two contact portions 122b2 and 123b2 are brought into electrical contact with each other. At the same time, the engaging projection 111f of the lamp 110 with cap inserted through the insertion portion 112a2 of the engaging groove 121a1 in the socket device 120 is guided while sliding and abutting against the mountain-shaped locking projection 121a4, and exceeds the peak of the mountain shape. Then, it is introduced into the engaging portion 121a3 and comes into contact with the end of the engaging portion 121a3.

At this time, since the electrical connection is made after the engaging protrusion 111f has climbed over the mountain-shaped engaging protrusion 121a4 of the engaging groove 121a1, the user is engaged during the turning operation. When the mating protrusion 111f gets over the locking protrusion 121a4, it receives resistance and may be mistaken for being engaged. At that time, since the electrical connection is not yet made, the lamp does not light up. For this reason, the user understands that the engagement is not yet complete, and performs the turning operation to the end to avoid the half-hanging state.

In addition, when the engagement protrusion 111f comes into contact with the end of the engagement portion 121a3, since a sound is heard, the user knows that the lamp 110 with cap is completely engaged with the socket device 120, It is further prevented that the engagement is half-hanged and the electrical connection is half-contacted. As a result, the lamp with cap 110 and the socket device 120 are electrically connected, and at the same time, the lamp with cap 110 is attached to the socket device 120. In addition, the lamp | ramp 110 with a nozzle | cap | die can be removed from the socket apparatus 120 by rotating in a reverse direction.

When the cap-mounted lamp 110 is mounted on the socket device 120 by the engaging means as described above, the socket main body 121 is pressed downward by the lower surface of the engaging protrusion 111f of the lamp main body 111 as shown in FIG. The spring 121b3 is compressed, and the lamp body 111 is strongly pressed against the back surface of the radiator 134 by the repulsive force. As described above, the downlight-type lighting fixture 130 using the lamp with cap 110 having a flat thin structure using LEDs as a light source is configured.

When power is turned on in this state, power is supplied from the power supply terminal member 122 of the socket device 120 via the power supply cap member 114 of the lamp 110 with cap, and the lighting circuit 113a of the control device 113 operates to operate a DC voltage of 24V. Is output. This DC voltage is applied from the control device 113 to each LED 112a, and a constant DC current is supplied to turn on all the LEDs simultaneously. The white light emitted from each LED 112a is emitted almost uniformly toward the entire inner surface of the cover member 116, and the light is diffused by a milky white glove to perform illumination with a predetermined light distribution characteristic.

In addition, when the user operates the dimmer 137 installed on the wall surface, the control signal is transmitted from the signal terminal member 123 of the socket device 120 to the control circuit 113b via the signal base member 115 of the lamp 110 with the base. And a necessary dimming signal is generated by the control circuit and supplied to the lighting circuit 113a. The lighting circuit 113a lights each LED 112a while dimming based on the dimming signal. At this time, since the lamp with cap 110 and the socket device 120 make it difficult to pick up noise that is likely to occur on the power source side, stable and accurate dimming control can be performed.

When the lamp with cap 110 is turned on as described above, the temperature of the LED 112a rises and heat is generated. As shown in FIG. 14B, the heat is transmitted from the substrate 112b made of aluminum having good thermal conductivity to the substrate support portion 111b to which the substrate is directly adhered and fixed, and the lamp body 111 made of aluminum is recessed. The heat is transmitted to the flat outer bottom surface of the portion 111e and is radiated to the outside through the heat radiator 134. At this time, the outer bottom surface of the recessed fitting portion 111e of the lamp body 111 and the back surface of the radiator 134 are supported in thermal contact with each other by the spring 121b3, so that heat can be effectively radiated to the outside.

Further, heat generated from the electronic component 113c of the control device 113, particularly heat generated from the switching transistor 113c1 accompanied by heat generation, is also transmitted from the inner bottom surface of the lamp body 111 in which the switching transistor is closely attached to the concave fitting portion 111e. The heat is effectively radiated to the outside through the radiator 134. By these effective heat radiation actions, the temperature rise of the LED 112a and the temperature rise of the electronic component 113c in the control device 113 are suppressed, and the reliability is improved.

As described above, according to the socket device 120 of the present embodiment, the terminal member to which the cap member of the lamp with cap is connected is a pair of terminal cases provided adjacent to the hook-shaped surface of the ring of the socket body, and the terminal Since the electric wire connected to the terminal member is composed of the terminal plate accommodated in the case and is led out along the upper surface of the adjacent terminal case, the wiring can be simplified and the miniaturization can be achieved.

Further, according to the present embodiment, the terminal member includes a power terminal member connected to the power supply cap member of the lamp with cap and a signal terminal member connected to the signal cap member of the lamp with cap. Since both the wires connected to each terminal member are led out along the top surface of the adjacent terminal case, the power wires and the signal wires are led out along the top surface of the terminal case. Since it is bundled up and down by the wire guide piece, it is stored within the width dimension of the ring-shaped surface of the ring-shaped socket body 121, and each wire is compactly wired without jumping out from the outer peripheral surface of the socket device. Therefore, it is not necessary to increase the outer diameter of the socket body in order to hide each drawn electric wire, and the socket device 120 can be miniaturized.

In addition, according to the socket device 120 of the present embodiment, the lamp body with the cap is provided with the socket body that is detachably mounted by the turning operation, and the terminal member is disposed on the socket body, and the cap member of the lamp with the cap is mounted. Electrically connected, and the engaging means mechanically engages with the lamp with cap when the terminal member is electrically connected to the lamp with cap, and the terminal member is electrically connected after the engaging operation is completed. Therefore, it becomes possible to avoid the half-hanging state of the lamp.

The engaging means includes an engaging protrusion and an engaging groove with which the engaging protrusion engages, and an engaging protrusion is formed at the entrance of the engaging groove so that the engaging protrusion can get over the engaging protrusion. Since the terminal member is electrically connected after overcoming the locking projection, it is possible to avoid the half-hanging state of the lamp with a simple configuration.

As described above, in the present embodiment, the socket device is an independent socket device that can form a lighting fixture by attaching a lamp with a cap to a single socket device, such as a spotlight. However, like a downlight, it is a built-in socket device that attaches a socket device to the fixture body or reflector and attaches a lamp with a cap to the socket device incorporated in the fixture to constitute a lighting fixture. There may be.

Although the socket body is made of synthetic resin, it has good thermal conductivity to improve heat dissipation of the light emitting part and control device, such as aluminum (Al), copper (Cu), iron (Fe), nickel You may comprise with industrial materials, such as a metal containing at least 1 type of (Ni), ceramics which consist of aluminum nitride (AlN), etc., silicon carbide (SiC). The external shape is preferably configured so that the flat surface is substantially circular and has a dish shape in order to mount a lamp with a flat thin structure, but the flat surface is a polygonal shape such as a triangle, quadrangle, hexagon, etc. Furthermore, an elliptical shape or the like may be used.

The engaging means for detachably attaching the lamp with the cap and the socket device is formed with an engaging protrusion on the lamp with the cap and an engaging groove on the socket device. Conversely, the engaging groove is formed on the lamp with the cap. The engaging protrusion may be formed on the socket device.

The base member of the lamp with the base and the terminal member of the socket device are provided on both sides with the engaging means in between, but the base for grounding is made using the space where the base member and the terminal member are not provided. You may comprise so that a member and the terminal member for earth | ground may be provided.

Lighting fixtures are allowed to be ceiling-embedded, direct-mounted, suspended, or wall-mounted, and even if a glove, shade, reflector, etc. is attached to the fixture body as a light control body, the light source The cap-attached lamp may be exposed. Moreover, not only what attached the lamp | ramp with one nozzle | cap | die to the instrument main body, A plurality may be arrange | positioned. Furthermore, you may comprise large luminaires for facilities and business, such as offices.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

This application is filed in Japanese Patent Application No. 2010-153438 filed in Japan on July 5, 2010, Japanese Patent Application No. 2010-153052 filed in Japan on July 5, 2010, July 5, 2010. Japanese Patent Application No. 2010-153082 filed in Japan as a basis for claiming priority, and the above disclosure is cited in the present specification and claims.

Claims (10)

1. A base receiving portion for receiving a base protruding from the lamp unit;
   An engagement protrusion that extends in the circumferential direction on the inner peripheral surface of the base receiving portion and protrudes from the outer peripheral surface of the base when the base is received by the base receiving portion and rotated relative to the base receiving portion. A keyway for locking the end to the end;
   And a receiving portion for receiving and electrically connecting each of the power supply and grounding terminal pins respectively protruding from the lamp unit in the direction of the rotation axis of the base independently of the engaging protrusion. Features a socket.
2. 2. The socket according to claim 1, wherein each of the housing portions is constituted by a terminal member provided on a ring-shaped outward flange portion formed in a socket body in which the base receiving portion opens.
3. The accommodating portion for accommodating the terminal pin for the power source is constituted by a terminal member provided in a ring-shaped outward flange portion formed in a socket body in which the base receiving portion is opened;
   The socket according to claim 1, wherein the accommodating portion for accommodating the grounding terminal pin is also used as the cap receiving portion.
4. The housing portion that houses the power supply terminal pin and the signal terminal pin that protrudes from the lamp unit in the direction of the rotation axis of the base independently of the engaging protrusion, and are electrically connected. The housing portion is constituted by a terminal member provided in a ring-shaped outward flange portion formed in a socket body in which the base receiving portion is opened;
   The terminal member has a terminal case provided on the outward flange portion, and a terminal plate accommodated in the terminal case and connected to the terminal pin;
   The socket according to claim 1, wherein an electric wire connected to the terminal member is led out along an upper surface of the terminal case of another terminal member adjacent to the outward flange portion.
5. 5. The socket according to claim 4, wherein the electric wire is sandwiched between an electric wire guide piece protruding from the terminal case and a side wall of the socket main body forming an outer peripheral surface of the base receiving portion.
6. The housing portion that houses at least the power supply terminal pin is electrically connected to the terminal pin after the engagement operation in which the engagement protrusion of the base is engaged with the terminal portion of the key groove is completed. The socket according to claim 1.
7. A locking protrusion that allows the engaging protrusion to climb over the entrance of the keyway is formed, and the engaging protrusion gets over the locking protrusion and then the electrical connection of the housing portion is made. The socket according to claim 6.
8. A socket according to any one of claims 1 to 7;
   A device assembly for supporting the socket; and a socket assembly.
9. The apparatus main body elastically supports the socket with an urging force in a pressing direction, and the engagement protrusion protruding from the outer peripheral surface of the lamp unit cap is locked to the end portion of the key groove. A socket assembly comprising: a heat dissipating member that elastically presses the protruding end of the base by the urging force of the socket.
10. A socket according to any one of claims 1 to 7;
    An apparatus main body for supporting the socket;
    A lamp unit having a base locked in a base receiving part of the socket.

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