JP5432788B2 - Light source device - Google Patents

Description

  The present invention relates to a light source device.

  Conventionally, as a light source device including an electrical light source and a lighting device that turns on the light source, a light source device that can be connected to a lighting fixture corresponding to a straight tube type fluorescent lamp instead of the fluorescent lamp has been provided. (For example, refer to Patent Document 1).

  As shown in FIG. 9, the straight tube type fluorescent lamp 7 is a kind of hot cathode type discharge lamp, and is made of a light-transmitting material such as glass and is coated with a fluorescent paint on the inner surface. In addition, a cylindrical bulb 70 filled with a discharge gas, a base 71 fixed to each one end of the bulb 70 (only one end side is shown), and a longitudinal direction (axial direction) of each bulb from the end face of each base 71 ) And a power supply terminal pin 72 that protrudes in pairs. Further, between the terminal pins 72 provided on the same base 71 and making a pair, as shown in FIG. 10A, filaments 73 serving as discharge electrodes are connected in the bulb 70.

  Also, the lighting fixture 4 (see FIG. 2) corresponding to the straight tube type fluorescent lamp 7 as described above includes two sockets 5 to which a pair of terminal pins 72 of the fluorescent lamp 7 are connected, and each socket. 5 and an instrument body 6 that is fixed to a mounting surface (not shown) such as a ceiling surface. Further, as shown in FIG. 10A, the lighting fixture 4 includes a power supply device 40 electrically connected to one terminal pin 72 of each base 71 of the fluorescent lamp 7 via the socket 5. , And a glow lamp 41 connected to the socket 5 so that both ends thereof are connected to the output end of the power supply device 40 via the filament 73 of the fluorescent lamp 7, respectively. The glow lamp 41 forms a current path for preheating the filaments 73 at the start of lighting of the fluorescent lamp 7 and generates a high voltage necessary for starting discharge between the filaments 73. The power supply device 40 and the glow lamp 41 are each held by the instrument body 6. Further, the power supply device 40 adjusts AC power input from an external AC power supply AC via, for example, an electric wire (not shown) drawn from the mounting surface to AC power suitable for lighting the fluorescent lamp 7. And output between the sockets 5. Specifically, for example, a known copper iron ballast can be used as the power supply device 40.

  10B, the light source device 1 that can be connected to the lighting fixture 4 in place of the fluorescent lamp 7 has the same size and shape as the terminal pin 72 of the fluorescent lamp 7, respectively. And two to four terminal pins 31b provided in a positional relationship (only two of which contribute to electrical connection are shown in FIG. 10B), and the lighting device 10 illuminates via the terminal pins 31b. Power is supplied from the power supply device 40 of the instrument 4. For example, a light-emitting diode array 12 is used as a light source that is lit by the lighting device 10, and in this case, the lighting device 10 uses AC power supplied from the lighting fixture 4 through the socket 5 and the terminal pin 31b as appropriate voltage. It consists of a known DC power supply circuit that converts it into DC power and outputs it to the LED array 12. It is not necessary to remove the glow lamp 41 when connecting the light source device 1 as described above, but the glow lamp 41 is not shown in FIG.

  Here, as the socket 5 provided in the lighting fixture 4 and connected to the pair of terminal pins 72 of the straight tube type fluorescent lamp 7 as described above, the fluorescent lamp 7 is connected to the socket 5 when the fluorescent lamp 7 is attached or detached. In contrast, there is a so-called rotary socket 5 that needs to be rotated around the central axis of the fluorescent lamp 7 (see, for example, Patent Document 2).

  An example of the rotary socket 5 is shown in FIGS. The socket 5 includes a socket case 51 fixed to the instrument body 6, a rotor 52 supported rotatably with respect to the socket case 51, and a pair of contacts held in the socket case 51 made of a conductive material. And a child 53. One of the pair of contacts 53 is electrically connected to one output end of the power supply device 40, and the other is electrically connected to one end of the glow lamp 41.

  More specifically, on the surface facing the fluorescent lamp 7 in the socket case 51, a storage recess 50 having a circular cross section in which each contactor 53 is stored and the rotor 52 is fitted is provided. Further, the socket case 51 is provided with a case-side slit 51a that opens to a surface directed to the opposite side of the instrument body 6 and communicates with the storage recess 50 through which the pair of terminal pins 72 pass. Further, the rotor 52 has a disc shape as a whole, and is fitted into the storage recess 50 with the thickness direction facing the depth direction of the storage recess 53. Further, the rotor 52 is formed with rotor-side slits 52a that are opened on both sides in the thickness direction and one end in the radial direction. The rotor side slit 52a is large enough to allow the pair of terminal pins 72 to be inserted simultaneously, and the width dimension of the rotor side slit 52a is slightly larger than the outer diameter of the terminal pins 72. When the terminal pin 72 is inserted through the rotor-side slit 52 a, the rotor 52 is interlocked with the rotation of the fluorescent lamp 7. Each contact 53 is made of a metal leaf spring, and in a state where the rotor side slit 52a communicates with the case side slit 51a, the two contacts 53 are in the width direction with respect to the rotor side slit 52a. Located on different sides of each other.

  When the fluorescent lamp 7 is connected to the rotary socket 5 as described above, the pair of terminal pins 72 are rotated through the case side slit 51a in a state where the rotor side slit 52a communicates with the case side slit 51a. The fluorescent lamp 7 is rotated about 90 ° around the central axis of the bulb 70 by inserting it into the child-side slit 52a. Then, each terminal pin 72 is brought into contact with one contact 53, whereby electrical connection between the lighting device 10 and the power supply device 40 is achieved. In this state, the case side slit 51a does not communicate with the rotor side slit 52a, and the opening in the radial direction of the rotor side slit 52a is closed by the socket case 51, so that each terminal pin 72 is dropped from the socket 5. In other words, a mechanical connection is also achieved. In each contactor 53, the contact pressure with respect to the terminal pin 72 is ensured by the spring force of the contactor 53.

  When the fluorescent lamp 7 is removed, the fluorescent lamp 7 is rotated in the opposite direction to that of the connection so that the rotor-side slit 52a communicates with the case-side slit 51a, and each terminal pin 72 is connected through the case-side slit 51a. The fluorescent lamp 7 can be removed by pulling out from the rotor side slit 52a.

JP 11-260125 A JP-A-11-345663

  By the way, in the light source device 1 used in place of the straight tube type fluorescent lamp 7, in order to increase the luminous flux, the scale of the light source is increased (for example, in the case of the light emitting diode array 12, the number of light emitting diodes). And increasing the size of each light-emitting diode). In this case, in the light source device 1, it is necessary to increase the size and shape of the light emitting unit 21 (see FIG. 7) that holds the light source such as the light emitting diode array 12.

  However, the light source device 1 is attached to and detached from the lighting fixture 4 having the rotary socket 5 as described above in the same manner as the fluorescent lamp 7, that is, by rotating the entire light source device 1 with respect to the lighting fixture 4. If the structure to be adopted is adopted, it is necessary to design the size and shape of the light source device 1 so that interference does not occur with the instrument body 6 and the like during the rotation. If it does so, the dimension shape of the light emission part 21 which hold | maintains a light source in the light source device 1 will be restrict | limited, Therefore A light beam will also have a limit.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a light source device that can be connected to a pair of rotary sockets but has an improved degree of freedom in the size and shape of the light emitting portion. It is to provide.

According to a first aspect of the present invention, there are two light source blocks that are electrically and mechanically connected to each of a light source block having a light emitting unit holding an electric light source and a pair of sockets corresponding to a straight tube type fluorescent lamp. An adapter having a socket connection portion, and a lighting device that converts the power supplied via each socket and each socket connection portion to power for lighting the light source, and the light source block and the adapter. Is provided with a connection part that is detachably connected electrically and mechanically, and the connection part of the light source block is constituted by a plug blade made of a conductive material, and the socket connection part of the adapter. Has a cylindrical terminal pin, and the connecting portion of the adapter is provided on a surface directed in a direction crossing the axial direction of the terminal pin, and the plug blade insertion hole into which the plug blade is inserted A body portion having, characterized in that it is constituted by a blade receiving said held inside the blade insertion hole in the body portion conductive contact with the plug pins.

The second invention is a socket connection electrically and mechanically connected to each of a light source block having a light emitting part holding an electric light source and a pair of sockets corresponding to a straight tube type fluorescent lamp. Each adapter, and a lighting device for converting the power supplied via each socket and the socket connection portion of each adapter into power for turning on the light source. Each is provided with a connection portion for connection to the light source block, and the light source block is detachably electrically and mechanically connected to the connection portion of each one of the adapters. two of the connecting portion is provided, the connecting portion of the light source block is composed of a plug pins made of a conductive material, wherein the socket connection of the adapter cylinder A main body portion having a plug blade insertion hole into which the plug blade is inserted, the connection portion of the adapter being provided on a surface directed in a direction crossing the axial direction of the terminal pin; And a blade receiver that is held by the main body portion and is in contact with the plug blade inside the plug blade insertion hole .

  According to a third invention, in the first or second invention, the lighting device is held by the adapter.

The fourth invention is the first to third any one of the, each socket connections, respectively, characterized in that it is rotatably connected to the connecting portion of the adapter.

  According to a fifth invention, in any one of the first to fourth inventions, the light source comprises a light emitting diode.

When connecting to the rotary socket, by separating each adapter from the light source blocks respectively, by the respective socket connection portion without rotating the light emitting portion can be rotated respectively, with respect to the socket at least for the light emitting portion Since there is no need to rotate as in the socket connection portion, the degree of freedom of the shape and shape of the light emitting portion is higher than in the case where the entire light source device needs to be rotated when connected to the rotary socket.

It is a disassembled perspective view which shows Embodiment 1 of this invention. It is a perspective view which shows the state connected to the lighting fixture same as the above. It is a disassembled perspective view which shows Embodiment 2 of this invention. It is a perspective view which shows the state connected to the lighting fixture same as the above. It is a side view which shows a light source block same as the above. It is a perspective view which shows an example of the socket which does not need to rotate a fluorescent lamp etc. at the time of a connection. It is a perspective view which shows an example of the light source device which can be connected with respect to a lighting fixture provided with the socket of FIG. It is a perspective view which shows the state by which the light source device of FIG. 7 was connected with respect to the lighting fixture provided with the socket of FIG. It is a top view which shows the one end part of a straight tube | pipe type fluorescent lamp. (A) is a block diagram which shows the state by which the fluorescent lamp was connected to the lighting fixture, (b) is a block diagram which shows the state by which the light source device was connected to the lighting fixture. It is a disassembled perspective view which shows an example of a rotary socket. (A) (b) shows the socket of FIG. 11, respectively, (a) is a left view, (b) is a front view.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In each of the following embodiments, as the lighting fixture 4 to which the light source device 1 is connected, as described with reference to FIGS. 9 to 12 in the conventional example, a rotary type lamp corresponding to the straight tube type fluorescent lamp 7 is used. One having a socket 5 is assumed. Also, the description of the parts common to the conventional example described in FIG.

(Embodiment 1)
As shown in FIGS. 1 and 2, the light source device 1 of the present embodiment includes a light source block 2 holding a plurality (39 in the figure) of light emitting diodes 11 as electrical light sources, and one light source block 2 each. And an adapter 3 having two socket connection portions 31 that are electrically and mechanically connected to the rotary socket 5. The plurality of light emitting diodes 11 are connected in series to each other to form a light emitting diode array 12 (see FIG. 10B). The lighting device 10 according to the present embodiment includes a well-known DC power supply circuit that generates DC power for lighting each light emitting diode 11 of the light source block 2, and is housed and held in the adapter 3.

  Hereinafter, the vertical direction and the horizontal direction are based on FIG. 1, and the depth direction in FIG. Note that the above direction is defined for convenience of explanation, and does not necessarily match the direction in the actual use state.

  The light source block 2 has a rectangular parallelepiped shape that is flat in the vertical direction as a whole, and has a light emitting unit 21 that holds each light emitting diode 11 in a form that emits light of each light emitting diode 11 downward, and an upper surface of the light emitting unit 21. And a rectangular parallelepiped convex portion 22 projecting upward from the central portion. Two convex blades 23 serving as connecting portions made of a conductive material (for example, metal) and projecting from the upper surface of the convex base portion 22 are held side by side on the convex base portion 22. Each plug blade 23 has an L shape with its upper end bent inward in the left-right direction. Each plug blade 23 is electrically connected to one end of the light emitting diode array 12.

  The adapter 3 has a main body 32 having a rectangular parallelepiped shape and provided with socket connection portions 31 at both left and right ends. Each socket connection portion 31 includes a cylindrical base portion 31a whose axial direction is directed in the left-right direction, and two terminal pins 31b that protrude from the bottom surface in the left-right direction in the base portion 31a. Have. The dimensional shape and arrangement of each terminal pin 31 b are the same as those of the terminal pin 72 of the fluorescent lamp 7. That is, each terminal pin 31b has a cylindrical shape with the axial direction directed in the left-right direction. In each socket connection portion 31, the central axes of the terminal pins 31b are parallel to each other, and one of the socket connection portions 31 that are different from each other. The central axes of the individual terminal pins 31b are located on the same straight line. Note that the four pairs of terminal pins 31b do not have to be composed of all four conductive materials. For each connection portion 31, only one terminal pin 31b connected to the power supply device 40 side is a conductive material. The other terminal pin 31b (that is, the one that contacts the contact 53 on the glow lamp 41 side) may be made of an insulating material.

  Similarly to the fluorescent lamp 7, the adapter 3 introduces the terminal pins 31 b into the case-side slits 51 a of the socket 5 from below in such a direction that the terminal pins 31 b are aligned in the vertical direction at each socket connection portion 31. Thereafter, as shown by an arrow A1 in FIG. 1, it is electrically and mechanically connected to each socket 5 by rotating about 90 °. The overall dimension and shape of the adapter 3 are such that no interference with the instrument body 6 or the like occurs during rotation when the socket 5 is attached to or detached from the socket 3. Specifically, for example, the outer diameter of the base portion 31a of the socket connection portion 31 is set to be equal to or less than the outer diameter of the bulb 70 of the straight tube type fluorescent lamp 7, and the dimensional shape of the main body portion 32 is the left-right direction (that is, socket connection). The dimension is such that it does not protrude to the outside (front-rear direction and up-down direction) of the socket connection part 31 when viewed from the axial direction of the base part 31 a of the part 31.

  Further, in the main body 32 of the adapter 3, two plug blades are inserted in which one plug blade 23 is inserted in the center portion of the surface directed downward when the connection to the luminaire 4 is completed. The holes 32a are provided side by side on the left and right. Further, inside each plug blade insertion hole 32a, a blade receiver (not shown) made of a conductive material that is electrically connected to one output end of each lighting device 10 via a terminal pin 31b is held. Has been. That is, each plug blade 23 is inserted into the plug blade insertion hole 32a and brought into contact with the blade receiver, whereby electrical connection between the light emitting diode array 12 and the lighting device 10 is achieved. Further, when viewed from below, each plug blade insertion hole 32a has a concentric arc shape, and has a dimension that allows the tip of the plug blade 23 to be inserted only at one end in the counterclockwise direction. This part has a dimensional shape that allows only the tip of the plug blade 23 to be inserted. That is, when the light source block 2 is connected to the adapter 3, the light source block 2 is inserted in the state where the plug blades 23 are introduced into the one end portions of the plug blade insertion holes 32a as shown by an arrow A2 in FIG. Is rotated clockwise when viewed from below with respect to the adapter 3. Then, the upper end portion of each plug blade 23 is engaged with the other portion of the plug blade insertion hole 32 a and is caught on the inner surface of the main body portion 32. Here, the drop-off of the light source block 2 below the adapter 3 is prevented, that is, a mechanical connection is achieved. Each of the blade receivers described above is disposed so as to be in one-to-one contact with the plug blade 32 in a state in which the light source block 2 is prevented from dropping below the adapter 3 as described above. That is, in the light source block 2, each plug blade 23 constitutes a connection portion, and in the adapter 3, the main body portion 32 and each of the blade receivers constitute a connection portion.

  According to the above configuration, the two socket connection portions 31 connected to the respective sockets 5 and the light emitting portions 21 respectively holding the respective light emitting diodes 11 (light emitting diode arrays 12) as light sources are separate components. However, the adapter 3 and the light source block 2 which are detachable from each other are provided separately so that the adapter 3 can be connected to each socket 5 by the same rotation as that of the fluorescent lamp 7, but the light source Since the block 2 does not need to be rotated like the adapter 3, the degree of freedom of dimensions is high. Therefore, compared with the case where the adapter 3 and the light source block 2 are not separable and the light source device 1 as a whole needs to be rotated when connected to each socket 5, the degree of freedom of the dimensional shape of the light emitting unit 21 is increased. For example, the luminous flux can be improved by increasing the size of the light emitting unit 21.

  Furthermore, in this embodiment, each part is arranged so that the upper surface of the light emitting part 21 is located below the lower end of each socket 5 in a state where the adapter 3 is connected to each socket 5 and the light source block 2 is connected to the adapter 3. The dimensions and shape have been determined. Thereby, the left and right dimensions of the light emitting unit 21 can be made larger than the distance between the sockets 5.

  In the present embodiment, the lighting device 10 is housed and held in the adapter 3, but part or all of the circuit components constituting the lighting device 10 may be held in the light source block 2.

(Embodiment 2)
Since the basic configuration of the present embodiment is the same as that of the first embodiment, description of the common parts is omitted.

  As shown in FIGS. 3 and 4, the present embodiment is characterized in that two adapters 3 are provided on the socket 5 in a one-to-one correspondence.

  That is, each adapter 3 has one socket connection part 31 and a rectangular parallelepiped main body part 32 connected to the socket connection part 31 on the opposite side of the terminal pin 31a. Therefore, each adapter 3 can be attached to and detached from the rotary socket 5 by rotating the adapter 3 with respect to the socket 5 as indicated by an arrow A1 in FIG. Further, in each adapter 3, two plug blade insertion holes 32 a arranged in the front and rear directions are provided on the lower surface of the main body portion 32, and plug blades 23 to be described later are provided inside the respective plug blade insertion holes 32 a. A blade receiver (not shown) is held in contact with each other.

  Further, in the light source block 2, two rectangular parallelepiped convex base portions 22 are provided on the upper surface of the light emitting portion 21 in a one-to-one correspondence with the adapter 3. Each convex base part 22 holds two plug blades 23 that are arranged in front and back and project upward from the convex base part 22. As shown in FIG. 5, each plug blade 23 has an L shape in which the upper end portion is bent outward in the front-rear direction (left-right direction in FIG. 5). Further, each of the plug blades 23 is movable in the front-rear direction within a predetermined movable range with respect to the convex portion 22, and each of the light source blocks 2 protrudes below the light emitting unit 21 and has one plug blade. Four handles 24 interlocking with 23 are provided on the plug blade 23 in a one-to-one correspondence. Further, each convex base portion 22 accommodates a return spring (not shown) for urging the stopper blades 23 in the direction to separate them from each other as indicated by an arrow A3 in FIG. In a state where no operating force is received, the stopper blades 23 are placed at positions where the distance between the stopper blades 23 arranged in the front and rear direction is maximized (hereinafter referred to as “return position”) by the spring force of the return spring. Maintained.

  Each stopper blade insertion hole 32a has an upper end portion of each stopper blade 23 only when the stopper blades 23 are displaced to a certain extent in the direction of approaching each other from the return position as indicated by an arrow A5 in FIG. The dimensions are such that each can be inserted. That is, when the light source block 2 is connected to each adapter 3, the operating force opposite to the spring force of the return spring is applied to each handle 24 as shown by the arrow A4 in FIG. After the return springs are elastically deformed, the plug blades 23 are inserted into the plug blade insertion holes 32a as indicated by arrows A2 in FIG. 3, and then the operating force on the handles 24 is released. Then, each plug blade 23 returns to the return position by the spring force of the return spring. Here, the mechanical connection is achieved by the upper end of each plug blade 23 being hooked on the inner surface of the main body 32, and each plug blade 23 is electrically connected to the blade receiver in the plug blade insertion hole 32a. Connection is achieved. That is, in the light source block 2, each plug blade 23 constitutes a connection portion, and in each adapter 3, the main body portion 32 and the blade receiver constitute a connection portion.

  Here, each circuit component constituting the lighting device 10 may be appropriately held by each adapter 3 and the light source block 2. For example, all circuit components may be held by the light source block 2, or one or both of them. A part of each circuit component may be held by each adapter 3. Further, if the adapters 3 are electrically connected to each other by appropriate means, or if a direct current power supply circuit using half-wave rectification is adopted as the lighting device 10, the lighting device is composed of only the circuit components held by the adapter 3. 10 can also be configured.

  According to the above configuration, the socket connection portions 31 are provided on the two adapters 3 that are detachable from the light source block 2 on which the light emitting portion 21 is provided, so that the size and shape of the light emitting portion 21 can be freely set. The effect of improving the degree can be obtained similarly to the first embodiment. Moreover, compared with Embodiment 1, instead of the number of parts increasing, each adapter 3 can be reduced in weight and can be easily attached or detached to the lighting fixture 4.

  In each of the above embodiments, the socket connection portion 31 can be rotated with respect to the main body portion 32 in the rotation direction necessary for attaching / detaching to the rotary socket 5 (that is, around the central axis of the base portion 31a). Also good. In this case, even if the adapter 3 remains connected to the light source block 2, it can be attached to and detached from the rotary socket 5 by rotating the socket connecting portion 31 without rotating the light emitting portion 21. Therefore, the adapter 3 is not detachable from the light source block 2 but is formed as an integral structure, that is, each socket connection portion 31 is connected to the light emitting portion 21 so as to be rotatable in the rotation direction. The effect of improving the degree of freedom of the dimensional shape of the light emitting part 21 can be obtained.

  Further, in each of the above embodiments, as the light source held in the light emitting unit 21, instead of the light emitting diode 11 (light emitting diode array 12), for example, another known electric light source such as an organic EL is used. Also good.

  By the way, as the socket 5, in addition to the rotary type as described above, a socket that does not require rotation of the connected fluorescent lamp 7 or the like is also known. An example of this type of socket 5 is shown in FIG. 6 (see, for example, Japanese Patent Application Laid-Open No. 2008-204747). In this socket 5, each contact 53 is held by a rotor 52, and rotates together with the rotor 52 with respect to the socket case 51 as indicated by an arrow A 6. The case-side slit 51a has a shape that prohibits the rotation of the fluorescent lamp 7 and the like by the inner surface being in contact with the terminal pins 31b and 72. That is, contrary to the rotary socket 5, each contactor 53 is a movable side, and each terminal pin 31b, 72 is a fixed side. In the socket 5 described above, when the fluorescent lamp 7 or the like is attached / detached, the rotor 52 is directly rotated by receiving an operating force. Therefore, a lever 52b for receiving the operating force is provided on the rotor 52. . As shown in FIG. 7, the light source device 1 having a dimension and shape that cannot be connected when each terminal pin 31 b and the light emitting unit 21 are fixed in mutual positional relationship and each socket 5 is a rotary type. Even so, as shown in FIG. 8, it can be connected to the lighting fixture 4 in which each contact 53 is rotatable with respect to the socket case 51 in each socket 5 as described above. .

DESCRIPTION OF SYMBOLS 1 Light source device 2 Light source block 3 Adapter 5 Socket 7 Fluorescent lamp 10 Lighting device 11 Light emitting diode (light source)
12 Light-emitting diode array (light source)
21 Light-emitting part 23 Plug blade (connection part)
31 Socket connection part 32 Body part (connection part)

Claims (5)

A light source block having a light emitting unit holding an electric light source;
An adapter having two socket connection parts electrically and mechanically connected to one of a pair of sockets corresponding to a straight tube type fluorescent lamp;
A lighting device that converts the power supplied via each socket and each socket connection portion into power for lighting the light source;
The light source block and the adapter are provided with a connection part that is detachably connected electrically and mechanically ,
The connection part of the light source block is constituted by a plug blade made of a conductive material,
The socket connection portion of the adapter has a cylindrical terminal pin,
The connection portion of the adapter is provided on a surface directed in a direction crossing the axial direction of the terminal pin and has a main body portion having a plug blade insertion hole into which the plug blade is inserted, and an inner side of the plug blade insertion hole A light source device comprising: a blade receiver that is held by the main body portion and is in contact with the plug blade . A light source block having a light emitting unit holding an electric light source;
Two adapters each having a socket connection portion electrically and mechanically connected to one of a pair of sockets corresponding to a straight tube type fluorescent lamp;
A lighting device that converts the power supplied through each socket and the socket connection portion of each adapter into power for lighting the light source;
Each adapter is provided with a connection portion for connection to the light source block, and each light source block is electrically and mechanically detachably attached to the connection portion of one adapter. There are two connections to be connected ,
The connection part of the light source block is constituted by a plug blade made of a conductive material,
The socket connection portion of the adapter has a cylindrical terminal pin,
The connection portion of the adapter is provided on a surface directed in a direction crossing the axial direction of the terminal pin and has a main body portion having a plug blade insertion hole into which the plug blade is inserted, and an inner side of the plug blade insertion hole A light source device comprising: a blade receiver that is held by the main body portion and is in contact with the plug blade .   The light source device according to claim 1, wherein the lighting device is held by the adapter. Before SL Each socket connection is, respectively, a light source device according to any one of claims 1 to 3, characterized in that it is rotatably connected to the connecting portion of the adapter.   The light source device according to claim 1, wherein the light source includes a light emitting diode.

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