JP4788625B2 - Lamp socket device and lighting fixture provided with the same - Google Patents

Description

  The present invention relates to a lamp socket device used for attaching a lamp to a fixture body of a lighting fixture and a lighting fixture including the same.

  2. Description of the Related Art Conventionally, a lamp (for example, a straight tube fluorescent lamp) having a power supply lamp pin that protrudes in pairs in the longitudinal direction of a bulb from an end face of a base fixed to each end of a bulb is used as a fixture for a lighting fixture. There are many lamp socket devices that can be attached to the main body.

  As a lamp socket device of this type, a contact that is electrically connected by contact with a lamp pin and a rotor that is rotatably supported with respect to the socket case are provided in a socket case fixed to the fixture body. There is something to prepare. In the socket case, a case-side slit through which a pair of lamp pins passes is formed on the outer peripheral surface adjacent to the face facing the base, and a pair of faces introduced from the case-side slit on the face facing the base in the rotor. A rotor side slit into which the lamp pin is inserted is formed. Here, in a state where the rotor side slit communicates with the case side slit, the contacts are arranged on both sides in the width direction of the rotor side slit.

  In this lamp socket device, a pair of lamp pins are inserted into the rotor side slit in a state where the rotor side slit is communicated with the case side slit, and the lamp is rotated about the central axis of the base along the protruding direction of the lamp pin. As a result, each lamp pin comes into contact with each contact and is prevented from coming off from the rotor side slit, and the mounting of the lamp is completed. Further, the lamp can be attached and detached by rotating the lamp in the opposite direction to that at the time of mounting and removing the lamp pin from the rotor side slit through the case side slit.

  By the way, in the above-mentioned lamp socket device, a space for gripping and rotating the lamp when attaching and detaching the lamp is required around the lamp. Such structural members are often arranged close to the lamp, and there is a case where a sufficient space around the lamp is not secured and it is difficult to hold and rotate the lamp.

  On the other hand, a lamp socket device that can rotate the lamp without gripping the lamp has been proposed (see, for example, Patent Document 1).

As shown in FIG. 9, the lamp socket device 1 described in Patent Document 1 is integrally coupled to the rotor 47 and has an operation arm 47 a that protrudes from the outer peripheral surface of the socket case 48. With this configuration, by operating the operating arm 47a and rotating the rotor 47, the lamp rotates together with the rotor-side slit 49 of the rotor 47, and the lamp can be attached and detached.
Japanese Patent Laying-Open No. 2005-294239 (see paragraph numbers [0016] to [0018] and FIGS. 3 and 4 of the specification)

  By the way, in the various lamp socket devices described above, since the lamp is rotated around the central axis of the base when the lamp is attached and detached, the central axes of both bases are on the same straight line as in a straight tube fluorescent lamp. This is a prerequisite. That is, a lamp in which the central axes of both caps are not on the same straight line cannot be mounted because the lamp cannot be rotated.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a lamp socket device that can be attached and detached without rotating the lamp and can be easily assembled, and a lighting fixture including the same. There is to do.

  In order to solve the above-described problems, the invention of claim 1 is a lamp socket device for attaching a lamp having a pair of power supply pin pins protruding in one direction from a base to a fixed position with respect to a fixture body of a lighting fixture. A socket body having a pair of contacts electrically connected to each of the pair of lamp pins, and the socket body with respect to the instrument body in a plane perpendicular to the protruding direction of the lamp pins in a state where the lamp is positioned at the fixed position. And a support portion that supports the socket main body between the support main body and the support main body that supports the socket main body in a rotatable manner. And a support cover attached to the opening side of the support body, and an opening formed on the outer peripheral surface adjacent to the face facing the base and through which the pair of lamp pins pass, And a guide slit that extends in a straight line longer than the interval between the pair of lamp pins so that the pair of lamp pins that are communicated with the opening portion and introduced from the opening portion are inserted on the opposite surface of the socket body. A pair of contacts face each other along the direction intersecting the longitudinal direction of the guide slit in the plane and the movement of the pair of lamp pins in the longitudinal direction of the guide slit is not restricted, and a pair of contacts along the longitudinal direction of the guide slit In a state where the contacts face each other and the pair of lamp pins are inserted into the guide slit and the lamp is positioned at the fixed position, the pair of contacts come into contact with the pair of lamp pins and the pair of lamp pins move in the longitudinal direction of the guide slit. The support unit is supported by the support unit so as to be freely rotatable between the restraining position and the support unit body is provided with a fixing base for fixing the support unit to the instrument body. The fixing base is provided with a storage chamber that opens on the opposite surface side and stores a nut, and a window hole that allows the screw hole of the nut to face outward in a state where the nut is positioned at a specified position in the storage chamber. The support cover is provided with a guide piece that enters the storage chamber of the fixed base and positions the nut at the specified position.

  According to the first aspect of the present invention, when the socket body is in the free position, the lamp intersects with the longitudinal direction of the guide slit in a plane perpendicular to the protruding direction of the lamp pin in a state where the lamp is positioned at a fixed position with respect to the fixture body. The pair of contactors face each other along the guide slit and do not restrict the movement of the pair of lamp pins in the longitudinal direction of the guide slit. In the state where the socket body is located at the restraining position, the pair of contacts face each other along the longitudinal direction of the guide slit, so that each of the pair of lamp pins of the lamp located at the fixed position is provided. Since the pair of contacts come into contact with each other to restrict the movement of the pair of lamp pins in the longitudinal direction of the guide slit, The lamp can be attached and detached by rotating the socket body between the free position and the restraint position. As a result, it is not necessary to rotate the lamp itself when attaching or detaching the lamp. Even lamps that are not on the same straight line can be installed. In addition, since the socket body only needs to be rotated when the lamp is attached or detached, the area in which the socket body moves when the lamp is attached or detached becomes relatively small, and a large space is not secured in the area where the socket body passes around the socket body. Therefore, the fixture body of the lighting fixture can be downsized.

  In addition, since a guide piece for positioning the nut stored in the storage chamber of the fixed base at a specified position is provided on the support section cover, the nut is moved by the guide piece by attaching the support section cover to the support section body. Since it is positioned at a specified position in the storage chamber, the work of attaching the support cover to the support body and the operation of positioning the nut at the specified position in the storage chamber do not have to be performed separately, improving assembly. Thus, the manufacturing cost can be reduced. Further, by inserting the guide piece into the storage chamber, the guide piece and the storage chamber serve as a guide when the support portion cover is attached to the support portion main body, and the support portion cover and the support portion main body can be easily attached. It becomes like this. Furthermore, since the nut is positioned at the specified position simply by pushing the nut stored in the storage chamber with the guide piece, the nut can be easily positioned.

  The invention according to claim 2 is characterized in that the lamp socket device according to claim 1 is provided in an instrument body.

  According to the invention of claim 2, since the lamp can be attached to and detached from the instrument body without rotating the lamp, it is possible to attach even a lamp whose central axis is not on the same straight line. The manufacturing cost can be reduced.

  The present invention is advantageous in that the lamp can be attached to and detached from the instrument body without rotating the lamp, and the assemblability can be improved and the manufacturing cost can be reduced.

  As shown in FIG. 3, the lamp socket device 1 according to an embodiment of the present invention is a power feeding unit that protrudes in pairs in the longitudinal direction of the bulb 2 from the end face of the base 3 fixed to each end of the bulb 2. The lamp 5 having the lamp pin 4 (see FIG. 8A) can be attached to the fixture body 7 of the lighting fixture 6.

  In the present embodiment, an example in which the lamp socket device 1 of the present invention is applied to a lighting fixture 6 corresponding to a straight tube lamp 5 (here, a straight tube fluorescent lamp) will be described. The lighting fixture 6 includes a rectangular plate-like fixture body 7, and the lamp socket device 1 is disposed at each end in the longitudinal direction on one surface side of the fixture body 7.

  As shown in FIGS. 4 and 5, the lamp socket device 1 has a pair of contacts 8 that are electrically connected by contacting a pair of lamp pins 4 protruding from the caps 3 of the lamp 5. A main body 9 and a support portion 10 serving as a socket mount for supporting the socket main body 9 with respect to the instrument main body 7 are provided. In the following description, the vertical direction in FIG. 4 will be described as the vertical direction for the sake of simplicity, but this direction does not define the mounting direction of the lamp socket device 1. Further, the lamp socket device 1 including the socket body 9 and the support portion 10 in this way may be simply called a lamp socket.

  The socket body 9 is configured such that a bottomed cylindrical inner body 11 having an open front surface, a pair of conductive plates 12 accommodated in the inner body 11, and a pair of conductive plates 12 are accommodated between the inner bodies 11. And an inner cover 13 attached to the front side of the inner body 11. The inner body 11 and the inner cover 13 are both synthetic resin molded products made of an insulating resin material.

  The pair of conductive plates 12 are formed in a symmetrical shape, and are formed by bending, for example, a plate made of a metal material having elasticity, and the contactor 8 and the electric wire 14 for supplying power to the lamp 5. Are electrically connected to each other, and a terminal portion 15 that mechanically holds the electric wire 14 and a connecting piece 16 that connects the contactor 8 and the terminal portion 15 continuously and integrally. The terminal portion 15 is connected to the connecting piece 16 and arranged along the insertion direction of the electric wire 14, and the terminal piece 15 is orthogonal to the insertion direction of the electric wire 14 from the end of the connecting piece 15 a opposite to the connecting piece 16. A core insertion hole 15d provided in the standing piece 15b, and a locking piece 15c extending from the tip edge of the standing piece 15b toward the connection piece 15a. This is a so-called quick connection terminal that simultaneously holds the electric wire 14 mechanically and electrically connected by sandwiching the core wire 14a of the electric wire 14 passed between the leading edge of the locking piece 15c and the connecting piece 15a. Each conductive plate 12 is housed in the inner body 11 with the contact 8 facing the front surface and the core wire insertion hole 15d of the terminal portion 15 facing the rear surface. Here, in the rear wall of the inner body 11, a lead-out hole 17 for inserting the electric wire 14 into the socket body 9 is provided in a portion corresponding to each of the core wire insertion holes 15 d of each terminal plate 12. The core wire 14 a of the electric wire 14 can be connected to the terminal portion 15 by inserting the electric wire 14 into the socket body 9.

  The connecting piece 16 is formed in a U-shape projecting downward, and is positioned with respect to the inner body 11 by being inserted into a conductive plate fixing portion 18 provided at a lower portion of the inner peripheral surface of the inner body 11. A contact 8 is extended upward from the connecting piece 16.

  The contact 8 is folded back in the direction in which the upper ends thereof are separated from each other to form a hooking portion 8a. The hooking portion 8a is hooked on a part of an inner cover 13 to be described later, and is positioned in the socket body 9. In addition, a pin holding portion 8 b that protrudes away from each other is formed at a substantially central portion in the longitudinal direction of the contact 8.

  The pair of conductive plates 12 configured as described above are attached to the inner body 11 with the contacts 8 facing each other. At this time, the distance between the pin holding portions 8b of the contact 8 is such that each lamp pin 4 comes into contact with each of the pin holding portions 8b when the pair of lamp pins 4 are arranged between the pin holding portions 8b. Is set.

  With this configuration, each lamp pin 4 is electrically connected to each contact 8 by inserting the pair of lamp pins 4 between the pair of contacts 8 and sandwiching them between the pin holding portions 8b.

  The inner body 11 includes a cylindrical thick tube portion 19 that houses the contact 8 and the connecting piece 16, and a cylindrical thin tube portion 20 that houses the terminal portion 15. It is connected in the front-rear direction so that 20 is the rear and the center axes of the two are aligned. The diameter (inner diameter) of the thick tube portion 19 is set larger than that of the thin tube portion 20. An inlet 22 that communicates with a pin insertion hole 21, which will be described later, formed in the inner cover 13 is formed in the upper portion of the thick cylinder portion 19 so as to be opened forward. Further, the inner body 11 has an operation lever 23 that protrudes in the radial direction of the thick tube portion 19 from the side of the introduction port 22 on the outer peripheral surface of the thick tube portion 19. The lamp socket device 1 shown in FIG. 1 is different from the lamp socket device 1 shown in FIGS. 2 to 8 in the outer shape of the operation lever 23 but is functionally the same.

  The inner cover 13 has a configuration in which a substantially circular pin insertion hole 21 is provided through a central portion of the front wall, and an inner peripheral wall 24 is provided rearward from the peripheral portion of the front wall. The front wall of the inner cover 13 is provided with a notch 25 that opens the pin insertion hole 21 upward, and the pin insertion hole 21 communicates with the introduction port 22 through the notch 25. The diameter of the pin insertion hole 21 is set to be larger than the interval between the pair of lamp pins 4 protruding from the base 3, and the inner cover 13 is placed with respect to the base 3 with the pair of lamp pins 4 inserted into the pin insertion hole 21. It is relatively rotatable. The inner cover 13 is combined with the inner body 11 in such a manner that the inner peripheral wall 24 is inserted into the thick cylindrical portion 19 of the inner body 11, and the engaging claws 26 projecting from the inner peripheral surface of the thick cylindrical portion 19 are connected to the inner cover 13. The inner body 11 is coupled by engaging with an engagement hole 27 penetrating the peripheral wall 24. In a state where the inner body 11 and the inner cover 13 are coupled, the inner cover 13 prevents the conductive plate 12 from coming off from the inner body 11. Further, an opening 28 communicating with the notch 25 is formed in the upper portion of the inner peripheral wall 24, and the hooking portion 8 a of the contact 8 described above is hooked on the periphery of the opening 28.

  The support portion 10 is formed in a bottomed cylindrical shape having an opening on the side facing the base 3 (the front side in FIG. 2A) and is an outer body 29 that is a support portion body that rotatably supports the socket body 9. And an outer cover 30 that is a support cover that is attached to the opening side (that is, the front surface side) of the outer body 29 so that the socket main body 9 is accommodated between the outer body 29 and the outer body 29. Both the outer body 29 and the outer cover 30 are synthetic resin molded products made of an insulating resin material. Further, the outer body 29 is made of a resin material having good sliding properties with respect to the resin material used for the inner body 11.

  The outer body 29 includes a cylindrical sliding portion 31 that accommodates the thick cylindrical portion 19 of the socket body 9 and a cylindrical insertion portion 32 that accommodates the thin cylindrical portion 20. It is connected in the front-rear direction so that the center axes of 32 are aligned with each other. The sliding portion 31 is set to have a larger diameter (inner diameter) than the insertion portion 32. The inner diameter of the sliding portion 31 is set to be equal to the outer diameter of the thick cylindrical portion 19 of the socket body 9, so that when the socket body 9 is attached to the outer body 29, the inner body 11 of the socket body 9 is The central axis (the central axis of the thick cylindrical portion 19 and the thin cylindrical portion 20) matches the central axis of the outer body 29 (the central axis of the sliding portion 31). The inner diameter of the exposure hole 33 penetrating the rear wall of the insertion portion 32 is set to be equal to the outer diameter of the thin cylindrical portion 20 of the socket body 9. Therefore, the socket body 9 is fitted to the outer body 29 in such a manner that the outer peripheral surface of the thick cylindrical portion 19 abuts on the inner peripheral surface of the sliding portion 31 and the rear portion of the thin cylindrical portion 20 protrudes rearward through the exposure hole 33. Therefore, it is supported by the outer body 29 so as to be rotatable with the front-rear direction as the rotation axis direction. That is, the socket body 9 is pivotally supported by the outer body 29.

  By the way, the sliding portion 31 has an operation window 34 through which the operation lever 23 is inserted. The operation window 34 is formed in such a size that the operation lever 23 can be moved in the circumferential direction of the sliding portion 31. The outer peripheral surface of the insertion portion 32 forms a tapered surface that decreases the outer diameter toward the rear.

  The outer cover 30 extends in the vertical direction and has a guide slit 35 that is open upward and formed on the front wall. An outer peripheral wall 36 is erected on the rear side from the periphery of the front wall. The guide slit 35 is set such that the dimension in the width direction (left-right direction in FIG. 2A) is slightly larger than the diameter of each lamp pin 4 so that the pair of lamp pins 4 is inserted, and the longitudinal direction (FIG. 2A ) In the vertical direction) is set larger than the distance between the pair of lamp pins 4. The outer cover 30 is combined with the outer body 29 so that the sliding portion 31 of the outer body 29 is surrounded by the outer peripheral wall 36, and an assembly claw 37 protruding from the outer peripheral surface of the outer body 29 is provided in the outer peripheral wall 36. The outer body 29 is coupled by engaging with the edge of the assembly hole 38. The outer peripheral wall 36 has an open portion 39 that opens to a portion corresponding to the operation window 34 of the outer body 29 in a state where the outer body 29 and the outer cover 30 are coupled, and the open portion 39 is formed in the guide slit 35. Communicate. In addition, the dimension of the opening part 39 in the circumferential direction of the outer peripheral wall 36 is set larger than the operation window 34 of the outer body 29 described above.

  Furthermore, a shaft projection 40 that protrudes rearward is provided at a substantially central portion on the rear surface of the front wall of the outer cover 30 so that the center line coincides with the center axis of the outer body 29. In a state where the socket main body 9 is accommodated between the outer body 29 and the outer cover 30, the shaft protrusion 40 is inserted into the socket main body 9 through the pin insertion hole 21 of the socket main body 9 and is held between the pair of contacts 8. Is done. By the way, the shaft protrusion 40 is formed with a relief recess 40 a for avoiding interference with the lamp pin 4 passing through the guide slit 35. The dimension in the width direction of the relief 40 a is set to the same size as the dimension in the width direction of the guide slit 35, and the depth dimension is set to be larger than the projecting dimension of the lamp pin 4 from the base 3. Therefore, when the lamp pin 4 is moved in the guide slit 35, the lamp pin 4 passes through the escape recess 40a, so that the shaft protrusion 40 does not interfere with the movement of the lamp pin 4.

  The lamp socket device 1 of the present embodiment is configured by housing a socket body 9 in a support portion 10.

  By the way, as shown in FIG. 1A, the support portion 10 of the lamp socket device 1 is fixed to the fixture body 7 at the lower portion of the outer body 29 which is the lower portion of the outer peripheral surface of the support portion 10 of the lamp socket device 1. A rectangular parallelepiped fixing base 41 is provided.

  The fixed base 41 is provided with a rectangular storage chamber 41a having an opening on the front side which is the facing surface side. The storage chamber 41a is for storing the nut 50 as shown in FIG. Here, the nut 50 is formed by penetrating a screw hole 50a in the thickness direction at the center of a square plate formed using, for example, a metal plate.

  The storage chamber 41a is set such that the length in the width direction is slightly larger than the length of one side of the nut 50, and the length in the height direction (vertical direction in FIG. 1B) is set slightly larger than the thickness of the nut 50. Yes. The storage chamber 41a is set to have a length in the length direction (front-rear direction) larger than one side of the nut 50, and when the nut 50 is stored in the innermost part of the storage chamber 41a (the nut 50 is stored in the storage chamber). The position of the nut 50 (when it is brought into contact with the back surface of 41a) is defined as the specified position of the nut 50 in the storage chamber 41a. The fixing base 41 is provided with a window hole 41b that allows the screw hole 50a of the nut 50 to face outward (both upward and downward) in a state where the nut 50 is located at the specified position. Moreover, as shown to Fig.1 (a), it is a pair of surfaces for positioning the support part 10 to the instrument main body 7 in the surface (lower surface in Fig.1 (a)) which contacts the instrument main body 7 in the fixing stand 41. FIG. A positioning protrusion 41c is provided so as to protrude.

  On the other hand, in the lower part on the rear surface side of the outer cover 30, when it is attached to the outer body 29, a part thereof enters the storage chamber 41a, and the rectangular plate-shaped guide piece 30a for positioning the nut 50 at the specified position. Projecting backwards. The guide piece 30 a is set to have the same dimension and thickness in the width direction as the nut 50. Further, the total value of the length of the portion of the guide piece 30a entering the storage chamber 41a in the length direction and the length of one side of the nut 50 is set to be approximately equal to the length of the storage chamber 41a in the length direction. Thus, the nut 50 can be pushed into the specified position in the storage chamber 41a by the guide piece 30a.

  As described above, according to the lamp socket device 1 of the present embodiment, the outer cover 29 is provided with the guide piece 30a for positioning the nut 50 accommodated in the accommodation chamber 41a of the fixed base 41 at the specified position. By attaching the outer cover 30 to the nut, the nut 50 is positioned at a specified position in the storage chamber 41a by the guide piece 30a. Therefore, the operation of attaching the outer cover 30 to the outer body 29 and the nut 50 are stored in the storage chamber. It is not necessary to separately perform the operation of positioning at the specified position in 41a, the assembling property can be improved, the manufacturing cost can be reduced, and as a result, the inexpensive lamp socket device 1 can be obtained. Further, by inserting the guide piece 30 into the storage chamber 41 a, the guide piece 30 and the storage chamber 41 a act as a guide when the outer cover 29 is attached to the outer cover 30, and the attachment between the outer cover 29 and the outer body 30 is performed. Can be easily performed. Furthermore, since the nut 50 is positioned at the specified position simply by pushing the nut 50 stored in the storage chamber 41a with the guide piece 30a, the nut 50 can be easily positioned.

  The lamp socket device 1 according to the present embodiment uses the screw hole 50a of the nut 50 exposed from the window hole 41b of the fixing base 41 to fix the support portion 10 to the instrument body 7 by screwing it. It is fixed to the main body 7.

  In the lighting fixture 6 shown in FIG. 3, the pair of lamp socket devices 1 are fixed to the fixture body 7 in such a manner that the front surfaces of the support portions 10 in which the guide slits 35 are formed face each other. On the other hand, as shown in FIG. 3, the lamp 5 is configured such that each end face of each base 3 faces the front surface of the support portion 10 of each lamp socket device 1 (the pair of lamp pins 2 of each base 3 is connected to the support portion 10. Are inserted into the guide slit 35) and are attached to the instrument body 7 while being positioned between the pair of lamp socket devices 1. That is, this position is a fixed position (attachment position) with respect to the fixture body 7 of the lamp 5, and when the lamp 5 is positioned at the fixed position, the front surface of the support portion 10 (the front surface of the outer cover 30) is the base of the lamp 5. 3 and the protruding direction of the lamp pin 4 is a direction along the front-rear direction of the lamp socket device 1.

  Next, operation | movement of the lamp socket apparatus 1 of this embodiment is demonstrated.

  With the above-described configuration, the socket body 9 is supported by the support portion 10 so as to be rotatable with the front-rear direction as the rotation axis direction. That is, the socket body 9 is rotatably supported by the support portion 10 within a surface (hereinafter referred to as “rotation surface”) orthogonal to the protruding direction of the lamp pin 4 in a state where the lamp 5 is positioned at the fixed position. The Here, the rotation range of the socket body 9 is regulated by the size of the operation window 34 provided in the outer body 29 of the support portion 10. That is, since the operation lever 23 provided in the socket body 9 is inserted through the operation window 34, the opening range of the operation window 34 in the support portion 10 abuts the operation lever 23 to restrict the movement range of the operation lever 23. It functions as a restricting means, and the rotation range of the socket body 9 is determined by the size of the operation window 34 in the rotation direction of the socket body 9.

  Here, as shown in FIG. 2A, the rotation range of the socket body 9 is such that the inlet 22 is directed upward (hereinafter referred to as “free position”), and the socket body 9 is moved from the free position to the position shown in FIG. The operation window 34 is formed so as to be regulated between the position shown in FIG. 2B (hereinafter referred to as “restraint position”) rotated 90 degrees clockwise. In FIG. 1, the movement range of the operation lever 23, that is, the rotation range of the socket body 9 is indicated by θ1.

  In the state where the socket body 9 is in the free position of FIG. 2A, the guide slit 35 of the support portion 10 and the introduction port 22 of the socket body 9 overlap in the front-rear direction, and the pin insertion hole 21 of the socket body 9 Is open upward. Further, as shown in FIG. 6A, the pair of contacts 8 are opposed to each other along the width direction of the guide slit 35 (the direction intersecting the longitudinal direction of the guide slit 35 in the rotation surface). ing.

  Therefore, in a state where the socket main body 9 is located at the free position, the movement of the pair of lamp pins 4 in the longitudinal direction of the guide slit 35 is not restricted, so that the pair of lamp pins 4 can be freely moved along the longitudinal direction of the guide slit 35. The lamp pin 4 can be inserted into and removed from the pin insertion hole 21 through the opening 39 and the introduction port 22. That is, the lamp 5 can be freely attached and detached. Since the dimension in the width direction of the guide slit 35 is set to be slightly larger than the diameter of the lamp pin 4, the pair of lamp pins 4 inserted into the pin insertion hole 21 are aligned in the longitudinal direction of the guide slit 35. Become.

  As described above, when the pair of lamp pins 4 is inserted into the pin insertion hole 21 as described above, the pair of lamp pins 4 is disposed between the pair of contacts 8 in the socket body 9 as described above. Since the pair of contacts 8 face each other along the width direction of the guide slit 35, the lamp pins 4 and the contacts 8 are not in contact with each other and are not electrically connected.

  On the other hand, in the state where the socket body 9 is in the restrained position, as shown in FIG. 6A, the pair of contacts 8 facing each other in the direction along the width direction of the guide slit 35 causes the rotation of the socket body 9. Accordingly, as shown in FIG. 6 (b), it rotates in the direction of arrow A (clockwise direction), and as shown in FIG. 6 (c), it faces in the direction along the longitudinal direction of the guide slit 35. Become.

  Therefore, when the socket body 9 is positioned at the restraining position with the pair of lamp pins 4 inserted into the guide slit 35 and the lamp 5 positioned at the fixed position, as shown in FIG. The pair of contacts 8 come into contact with the pair of lamp pins 4 to restrict the movement of the pair of lamp pins 4 in the longitudinal direction of the guide slit 35, and freely move the pair of lamp pins 4 along the longitudinal direction of the guide slit 35. In other words, the lamp 5 cannot be moved from the fixed position (the lamp 5 cannot be removed from the lamp socket device 1). In this state, since the pair of contacts 8 are in contact with the pair of lamp pins 4, the pair of contacts 8 and the pair of lamp pins 4 are electrically connected to each other. At this time, the contact 8 is positioned at a position corresponding to the guide slit 35 such that the pair of pin holding portions 8b face each other, and the pair of lamp pins 4 are sandwiched between the pair of pin holding portions 8b. In addition, since the contact 8 is a part of the conductive plate 12 formed using a plate made of a metal material having elasticity, the contact pressure between the lamp pin 4 and the contact 8 is ensured.

  When the socket body 9 is rotated from the free position to the restraint position, the contact 8 is moved from a position not in contact with the lamp pin 4 to a position in contact with the lamp pin 4. A force that rotates together with the socket body 9 is applied by 8. However, in this embodiment, since the lamp pin 4 is inserted through the guide slit 35 of the support portion 10, the rotation of the lamp 5 is restricted by the lamp pin 4 coming into contact with the inner side surface of the guide slit 35 in the width direction, The lamp 5 is prevented from rotating with the socket body 9.

  In the state where the socket body 9 is located at the restraining position, the guide slit 35 of the support portion 10 and the introduction port 22 of the socket body 9 do not overlap in the front-rear direction as shown in FIG. The introduction port 22 communicated with the insertion hole 21 is closed by the support portion 10. Therefore, in this state, since the lamp pin 4 cannot be inserted into and removed from the pin insertion hole 21 through the opening 39 and the introduction port 22, the lamp 5 can be freely attached and detached when the socket body 9 is positioned at the restraining position. It can not be done.

  Therefore, in the lamp socket device 1 of the present embodiment, in a state where the socket body 9 is located at the free position, the pair of contacts 8 face each other along the width direction of the guide slit 35 and the longitudinal direction of the guide slit 35 is reached. Since the movement of the pair of lamp pins 4 is not restricted, the pair of lamp pins 4 can be inserted into the guide slit 35 from the opening 39 and the lamp 5 can be positioned at a fixed position with respect to the instrument body 7. Further, in a state where the socket main body 9 is located at the restraining position, the pair of contacts 8 face each other along the longitudinal direction of the guide slit 35, whereby each of the pair of lamp pins 4 of the lamp 5 located at the fixed position is provided. Since the pair of contacts 8 come into contact with each other and the movement of the pair of lamp pins 4 in the longitudinal direction of the guide slit 35 is restricted, the lamp 5 can be fixed at the fixed position.

  Therefore, according to the lamp socket device 1 of the present embodiment, the lamp 5 can be attached and detached by rotating the socket body 9 between the free position and the restraining position. As a result, when the lamp 5 is attached or detached, the lamp 5 The lamp 5 which does not need to rotate itself and whose central axis of the base 3 is not on the same straight line can be mounted.

  Further, even when a space for holding and rotating the lamp 5 is not secured around the lamp 5, the attaching / detaching operation of the lamp 5 can be easily performed. Furthermore, in the conventional configuration shown in FIG. 9 in which the lamp 5 is attached / detached by moving the lamp 5 itself, when the lamp 5 becomes large, it becomes difficult to handle the lamp 5 and the workability of attaching / detaching the lamp 5 is deteriorated. In the lamp socket device 1 of the present embodiment, the lamp 5 can be easily attached and detached simply by moving the socket body 9 regardless of the size of the lamp 5, and therefore the workability of attaching and detaching the lamp 5 is deteriorated. There is no.

  In addition, since the socket body 9 only needs to be rotated when the lamp 5 is attached / detached, the area in which the socket body 9 moves when the lamp 5 is attached / detached becomes relatively narrow, and the area through which the socket body 9 passes around the socket body 9. Since it is not necessary to secure a large space, the fixture body 7 of the lighting fixture 6 can be downsized.

  Furthermore, according to the lamp socket device 1 of the present embodiment, the socket body 9 can be rotated by the operation lever 23, so that the lamp 5 can be easily attached and detached. Further, since the side surface of the operation lever 23 (the right side surface in FIG. 2A) is continuous with the inner peripheral surface of the introduction port 22, the lamp pin 4 is inserted into and removed from the pin insertion hole 21 through the introduction port 22. If 4 is moved along the side surface of the operation lever 23, the side surface of the operation lever 23 can be used as a guide when the lamp pin 4 is inserted and removed, so that the lamp 5 can be attached and detached more easily.

  By the way, in this embodiment, the protrusions 42 are provided on both sides of the shaft protrusion 40 on the back surface of the front wall of the outer cover 30, and the recesses 43 into which the protrusions 42 are fitted are provided in portions corresponding to the protrusions 42 in the socket body 9. Yes. The concave portion 43 has a total of four locations, two locations facing each projection 42 when the socket body 9 is in a free position and two locations facing each projection 42 when the socket body 9 is in a restrained position. It is formed. Here, the front wall of the outer cover 30 has a flexible portion 44 that bends so as to move the protrusion 42 in the front-rear direction. Therefore, when the socket body 9 in the free position or the restraint position is rotated, the flexible portion 44 is bent and the protrusion 42 is retracted from the recess 43, and when the socket body 9 is rotated to the restraint position or the restraint position, the protrusion 42. Fits into the recess 43, and a click feeling is obtained when the socket body 9 rotates. Here, since the notch 25 formed in the inner cover 13 is also used as one recess 43, the recess 43 is actually formed in three places.

  Further, the lead-out hole 17 provided in the rear wall of the socket main body 9 is provided so as to penetrate along the rotation axis direction of the socket main body 9 (that is, the protruding direction of the lamp pin 4), and the electric wire 14 drawn from the lead-out hole 17 is connected to the socket main body. 9 will be pulled out along the rotation axis. Therefore, even if the socket body 9 is rotated as shown by the arrow A between the free position shown in FIG. 7A and the restraining position shown in FIG. The passing area C1 can be kept relatively narrow. That is, it is not necessary to secure an extra space around the electric wire 14 when rotating the socket body 9.

  Further, the lamp socket device 1 shown in FIG. 3 temporarily holds the lamp 5 with respect to the instrument body 7 even when the socket body 9 is in a free position and the socket body 9 does not hold the lamp 5. The temporary holding part 45 which can do is provided. The temporary holding portions 45 in FIG. 3 are respectively disposed on both sides of the bulb 2 at the central portion in the longitudinal direction of the instrument body 7, and temporarily hold the lamp 5 so as to sandwich the central portion in the longitudinal direction of the bulb 2. . The temporary holding portion 45 is formed with a lamp holding portion 45a curved in a convex shape in a direction away from each other at the center portion, and the lamp 5 is temporarily held by sandwiching the lamp 5 between the both lamp holding portions 45a. The upper end portions of the pair of temporary holding portions 45 constitute push operation portions 45b that are inclined away from each other toward the upper side, so that the lamp 5 can be moved from the state in which the lamp 5 is sandwiched between the both lamp holding portions 45a. When detaching, the lamp 5 can be easily removed by pushing the push operation part 45b to widen the distance between the two lamp holding parts 45a. Although the lower end portion of the temporary holding portion 45 is fixed to the instrument body 7, the temporary holding portion 45 may be formed integrally with the support portion 10.

  By providing the temporary holding portion 45 as described above, the lamp 5 can be positioned at the fixed position of the fixture body 7 even when the socket body 9 of the lamp socket device 1 is in the free position when the lamp 5 is attached or detached. Can do. As a result, the operator does not need to position the lamp 5 by hand when operating the operation lever 23 to rotate the socket body 9, and the lamp 5 can be easily attached and detached. .

  In addition, since it is not necessary to position the lamp 5 by hand when operating the operation lever 23 to rotate the socket body 9, the operator can move the socket body 9 to a free position to move the lamp pin 4 to the free position. The lamp 5 can be attached to and detached from the temporary holding portion 45 after the connection with the contact 8 is released. Thereby, when attaching / detaching the lamp 5 to / from the temporary holding portion 45, the operator does not need to hold the lamp 5 in a state where the lamp pin 4 is connected to the contact 8. Even if the energization is not cut off, the lamp 5 can be safely attached and detached.

  By the way, if the lamp socket device 1 of this embodiment is used, not only the lighting fixture 6 corresponding to the straight tube lamp 5 as described above but also the lamp pin 4 as shown in FIGS. 8 (a) and 8 (b). It is also possible to configure the luminaire 6 corresponding to the lamp 5 in which the central axis of the base 3 along the protruding direction is not collinear.

  In the lamp 5 illustrated in FIGS. 8A and 8B, the projecting directions of the lamp pins 4 from the bases 3 are opposite to each other, and the pair of bases 3 are integrally coupled by a coupling piece 46. . Although not shown here, the valve 2 is formed in a predetermined shape between the pair of caps 3. As an example of the valve 2, the two valves 2 whose one ends are connected in the vicinity of the middle portion of the both caps 3 are extended in a spiral shape centering on the connecting portion, and each end is connected to the cap 3. It can be of a fixed shape. The lighting fixture 6 corresponding to the lamp 5 includes a disk-shaped fixture body 7, and the lamp socket device 1 is disposed at a portion corresponding to each base 3 on one surface side of the fixture body 7.

  In this type of lamp 5, since the central axis of the base 3 is not collinear, the lamp 5 is attached to and detached from the lamp socket device 1 by rotating the lamp 5 around the central axis of the base 3 as in the conventional configuration. However, if the lamp socket device 1 of the present embodiment described above is used, the lamp 5 can be attached and detached. That is, as shown in FIG. 8A, with the socket body 9 in the free position, the lamp 5 is moved in the direction of arrow B, and the lamp pin 4 is passed through the opening 39 and the inlet 22 with respect to the pin insertion hole 21. Inserting and rotating and moving the socket body 9 to the restraining position as indicated by an arrow A in FIG. 8B completes the holding and electrical connection of the lamp 5 by the lamp socket device 1.

  As described above, if the lamp socket device 1 of the present embodiment is used, the lamp 5 can be attached and detached without moving the lamp 5 itself. Therefore, the lamp 5 whose center axis is not on the same straight line can be attached and detached. Is possible. Further, since the lamp 5 is not rotated, even when the central axis of the bulb 2 and the central axis of the base 3 are not on the same straight line as the lamp 5 in which the bulb 2 is formed in a spiral shape, It is not necessary to provide a space in a region through which the valve 2 passes when the valve 2 rotates, which leads to downsizing of the instrument body 7.

  Further, in the lamp socket device 1 shown in FIGS. 8A and 8B, a temporary holding portion 45 is provided in the vicinity of each support portion 10, and the temporary holding portion 45 is a base 3 of the lamp 5. Since the lamp 5 is temporarily held by contact with the lamp 5, even if the lamp 5 includes the glass bulb 2, which is difficult to ensure high strength due to the narrowing of the tube and the complicated shape, a load is applied to the bulb 2. The lamp 5 can be temporarily held without adding.

  The configuration of the lamp socket device 1 described above is merely an example. For example, the function of preventing the conductive plate 12 from coming off from the inner body 11 is provided to the outer cover 30 and the inner cover 13 is omitted, or the outer cover 30 is removed. The lamp socket device 1 of the present invention can be realized in various configurations, such as being formed integrally with the fixture body 7, or the support portion 10 being constituted by two members that can be separated in the longitudinal direction of the guide slit 35.

  And according to the lighting fixture 6 which equips the fixture main body 7 with the lamp socket apparatus 1 of this embodiment described above, since the lamp | ramp 5 can be attached or detached with respect to the fixture main body 7, without moving the lamp | The lamp 5 whose center axis 3 is not on the same straight line can be mounted, and the assemblability can be improved and the manufacturing cost can be reduced.

The lamp socket apparatus of one Embodiment of this invention is shown, (a) is a perspective view of the state which has a socket main body in a free position, (b) is a schematic sectional drawing of the state which has a socket main body in a free position. The lamp socket device is shown, wherein (a) is a perspective view of the socket body in a free position, and (b) is a perspective view of the socket body in a restrained position. It is a perspective view which shows the lighting fixture provided with the lamp socket apparatus same as the above. It is a disassembled perspective view which shows a lamp socket apparatus same as the above. It is a disassembled perspective view which shows a lamp socket apparatus same as the above. The inside of the socket main body of a lamp socket apparatus same as the above is shown, (a) is a schematic explanatory drawing of the state in which a socket main body exists in a free position, (b) is the state in which a socket main body exists between a free position and a restraint position. (C) is a schematic explanatory drawing of the state which has a socket main body in a restraint position. The lamp socket device is shown, wherein (a) is a perspective view of the socket body in a free position, and (b) is a perspective view of the socket body in a restrained position. The other example of the lighting fixture provided with a lamp socket apparatus same as the above is shown, (a) is a perspective view of the state which removed the lamp | ramp, (b) is a perspective view of the state which mounted | wore the lamp | ramp. It is a perspective view of the lamp socket apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp socket apparatus 3 Base 4 Lamp pin 5 Lamp 6 Lighting fixture 7 Appliance main body 8 Contact 9 Socket main body 10 Support part 29 Outer body (support part main body)
30 Outer cover (support cover)
30a Guide piece 35 Guide slit 39 Opening part 41 Fixing base 41a Storage chamber 41b Window hole 50 Nut 50a Screw hole

Claims (2)

A lamp socket device for attaching a lamp having a pair of lamp pins for power supply protruding in one direction from a base to a fixed position with respect to a fixture body of a lighting fixture, and a pair of contacts electrically connected to each of the pair of lamp pins A socket main body, and a support portion that rotatably supports the socket main body with respect to the instrument main body in a plane perpendicular to the protruding direction of the lamp pin in a state where the lamp is positioned at the fixed position,
The support portion is attached to the opening side of the support portion main body in such a manner that the socket main body is accommodated between the support portion main body and the support portion main body that is open on the side facing the base and rotatably supports the socket main body. A pair of support pins that are formed on the outer peripheral surface adjacent to the face facing the base and through which the pair of lamp pins pass, and a pair that is communicated with the opening on the face facing the base and that is introduced from the opening. And a guide slit extended in a straight line longer than the interval between the pair of lamp pins so that the lamp pins are inserted,
The socket body has a free position in which the pair of contacts face each other along the direction intersecting the longitudinal direction of the guide slit in the plane and does not restrict the movement of the pair of lamp pins in the longitudinal direction of the guide slit, and the longitudinal direction of the guide slit. When the pair of contactors face each other and the pair of lamp pins are inserted into the guide slit and the lamp is positioned at the fixed position, the pair of contactors respectively contact the pair of lamp pins and the pair of guide pins in the longitudinal direction of the guide slit. It is supported by the support portion so as to be freely rotatable between a restraint position that restricts the movement of the lamp pin of the lamp pin,
The support part body is provided with a fixing base for fixing the support part to the instrument body. The fixing base has a storage chamber in which the facing surface side is open and a nut is stored, and the nut is in a specified position in the storage chamber. A window hole that allows the screw hole of the nut to face outward is provided in the positioned state, and a guide piece that enters the storage chamber of the fixing base and positions the nut at the specified position is provided in the support cover. A lamp socket device characterized by that.   A lamp fixture comprising the lamp socket device according to claim 1 in a fixture main body.

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