JP2008204746A - Lamp socket, and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp socket which can be miniaturized, and a luminaire using the lamp socket. <P>SOLUTION: Each of a pair of conductive plates 12 has a terminal part 15 to which the core wire 14a of an electric wire 14 inserted from an electric wire insertion hole 17 is electrically and mechanically connected, and a contact part 8 with which a lamp pin protrusively provided in the base of a lamp is brought into electrical contact. The distance between the electric wire insertion holes 17 in the socket body 9 is smaller than the distance between the lamp pins brought into electrical contact with the contact parts 8. The outline in a cross section which is a cross section perpendicular to the side facing the base of the lamp while including a terminal part 15 is smaller than the outline in a cross-section which is perpendicular to the side facing the base of the lamp while including the contact part 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lamp socket and a lighting fixture using the lamp socket.

Conventionally, a socket body having a pin insertion hole into which a lamp pin protruding from a cap of a discharge lamp is inserted and an electric wire insertion hole into which an electric wire is inserted, and made of a conductive material and housed in the socket body from the pin insertion hole There is provided a lamp socket including a conductive block having a contact portion that is brought into contact with the inserted lamp pin and a terminal portion to which an electric wire inserted from an electric wire insertion hole is electrically and mechanically connected (for example, a patent). Reference 1).
JP 2005-294239 A

  In order to reduce the size of a lighting fixture using a lamp socket, the lamp socket is also required to be reduced in size.

  This invention is made | formed in view of the said reason, The objective is to provide the lamp fixture which can be reduced in size, and a lighting fixture using this lamp socket.

  The invention of claim 1 is a lamp socket for electrically connecting a lamp having a power supply lamp pin projecting in one direction from one base and an electric wire, each of which is made of a conductive material and is in contact with the lamp pin. A pair of conductive blocks having a contact portion and a terminal portion to which an electric wire is connected and corresponding to the lamp pins on a one-to-one basis, and a socket body for storing and holding each conductive block, respectively, facing the base of the lamp in the socket body A pair of wire insertion holes through which the wires connected to the terminal portions of the conductive block are inserted on the opposite surface of the surface facing the lamp cap, respectively, are provided on the surface to be inserted into the lamp pins. A hole is provided, and the interval between the wire insertion holes is equal to or less than the interval between the contact portions of the pair of conductive blocks, and the contact portion and the terminal portion of the conductive block are The positions in the direction orthogonal to the surface facing the lamp cap are different from each other, and the outer shape of the cross section along the surface facing the lamp cap and including the terminal portion is opposed to the lamp cap. The outer shape of the cross section along the surface to be cut is smaller than the outer shape of the cross section including the contact portion.

  According to the present invention, the outer shape in the vicinity of the contact portion subjected to the restriction according to the pitch of the lamp pins is made smaller, and the outer shape in the vicinity of the terminal portion having a smaller limit is made smaller, thereby aligning the outer shape in the vicinity of the terminal portion with the outer shape in the vicinity of the contact portion. The size can be reduced as compared with the case.

  The invention according to claim 2 is the surface of the invention according to claim 1, further comprising a support body that supports the socket body and is fixed to the fixture body of the lighting fixture, and is a surface adjacent to the face facing the base of the lamp in the socket body. Is provided with a pin introduction port through which each lamp pin is introduced in communication with the pin insertion hole, and on the surface of the support that faces the lamp base, each lamp pin communicates with the pin insertion hole of the socket body. Pin insertion holes to be inserted are provided, and a surface adjacent to the surface facing the base of the lamp is provided with a pin introduction port that communicates with the pin insertion hole to introduce each lamp pin. An open position where the pin introduction port of the support body and the pin introduction port of the socket body communicate with each other and the lamp can be attached and detached, and the pin introduction port of the support body is a conductive block, or a conductive block Between a closed position which is closed by both the socket body, characterized in that it supports the socket body rotatably.

  According to this invention, the lamp body can be attached and detached simply by rotating the socket body holding the conductive block with respect to the support fixed to the fixture body of the lighting fixture, and it is necessary to rotate the lamp. Absent. Therefore, it can be used also for a lamp having a small tube which is difficult to rotate or a lamp having a pair of caps whose central axes do not coincide with each other.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, each conductive block has a surface directed toward the electric wire insertion hole so that the surface is separated from the electric wire insertion hole as the distance from the other conductive block increases. A guide portion that is inclined and guides the electric wire to a position farther from the other conductive block than the contact portion is provided.

  According to this invention, even if the insertion amount of the electric wire into the electric wire insertion hole is too large, the excess electric wire is guided to the outside in the left-right direction than the contact portion by the guide portion. Does not interfere with the contact between the lamp pin and the contact portion. Therefore, strictness is not required for the insertion amount of the electric wires, and the front and rear of the lamp socket are compared with the case where the contact portion and the terminal portion are separated in the front-rear direction so that the excessive electric wires do not easily reach the contact portion. The direction dimension can be reduced.

  According to a fourth aspect of the present invention, at least one lamp socket according to any one of the first to third aspects of the invention is provided, and an appliance main body to which a support body of each lamp socket is fixed.

  According to the first aspect of the present invention, with respect to the outer shape of the cross section along the surface facing the base of the lamp, the outer shape of the cross section including the terminal portion is a cross section including a contact portion that receives a restriction corresponding to the pitch of the lamp pins. Compared to the case where the outer shape of the cross section including the terminal portion is made equal to the outer shape of the cross section including the contact portion, the outer shape of the cross section including the terminal portion, which is relatively weak, is reduced. It becomes possible.

  According to the second aspect of the present invention, the lamp can be attached and detached simply by rotating the socket main body holding the conductive block with respect to the support fixed to the fixture main body of the lighting fixture. There is no need to let them. Therefore, it can be used also for a lamp having a small tube which is difficult to rotate or a lamp having a pair of caps whose central axes do not coincide with each other.

  According to the invention of claim 3, each conductive block is inclined so that the surface directed to the wire insertion hole is separated from the wire insertion hole as the distance from the other conductive block increases. This is a case where the insertion amount of the electric wire into the electric wire insertion hole is too large because the guide portion is provided with the end portion away from the other conductive block than the end portion away from the other conductive block at the contact portion. However, since the surplus electric wire is guided to the outside in the left-right direction with respect to the contact portion by the guide portion, the surplus electric wire does not hinder the contact between the contact portion and the lamp pin. Therefore, strictness is not required for the insertion amount of the electric wires, and the front and rear of the lamp socket are compared with the case where the contact portion and the terminal portion are separated in the front-rear direction so that the excessive electric wires do not easily reach the contact portion The direction dimension can be reduced.

  As shown in FIG. 2, the lamp socket 1 according to the present embodiment includes a pair of lamp pins 4 for power feeding that protrude in pairs in the longitudinal direction of the bulb 2 from the end surfaces of the caps 3 fixed to the respective ends of the bulb 2. The lamp 5 having the structure shown in FIG. 11A can be attached to the fixture body 7 of the lighting fixture 6. In this embodiment, an example in which the lamp socket 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 main body 7, and the lamp socket 1 is disposed at each end in the longitudinal direction on one surface side of the fixture main body 7.

  As shown in FIGS. 3 and 4, the lamp socket 1 is provided with a pair (two) of the pair of lamp pins 4 protruding from the caps 3 of the lamp 5 in a one-to-one correspondence with the corresponding lamp pins 4. A conductive plate 12 as a conductive block having a contact portion 8, a socket main body 9 that stores and holds each conductive plate 12, and a support 10 that supports the socket main body 9 with respect to the instrument main body 7. In the following description, the vertical direction is based on FIG. 3, the lower left-upper right direction in FIG. 3 is referred to as the front-rear direction, and the upper left-lower right direction in FIG. However, these directions are irrelevant to the orientation when the lamp socket 1 is mounted.

  Each of the conductive plates 12 is made of a conductive material such as metal, for example, and as shown in FIGS. 5 to 7, the contact portion 8 and the power supply wire 14 to the lamp 5 are electrically connected. And a terminal portion 15 for mechanically holding the electric wire 14 and a connecting portion 16 for connecting the contact portion 8 and the terminal portion 15 continuously and integrally. A pair of electric wire insertion holes 17 through which the electric wires 14 are inserted are formed in the rear wall of the inner body 11, and the core wire 14 a of the electric wire 14 introduced into the socket body 9 through each electric wire insertion hole 17 is a terminal portion. 15 is connected. Here, the distance between the wire insertion holes 17 is equal to or less than the distance between the contact portions 8 in the pair of conductive plates 12.

  The terminal portion 15 is continuous from the connecting portion 16 to the rear and is connected to the connecting piece 15a disposed along the insertion direction of the electric wire 14, and the end of the connecting piece 15a opposite the connecting piece 16 (rear end edge) from the electric wire. 14 erected upward so as to be orthogonal to the insertion direction of 14 and the thickness direction in the front-rear direction, and extending from the front edge of the erected piece 15 b toward the connection piece 15 a and extending to the connection piece 15 a And a locking piece 15c inclined in a direction away from the standing piece 15b. A core wire insertion hole 15d is provided through the standing piece 15b in the front-rear direction, and the core wire 14a of the electric wire 14 inserted into the core wire insertion hole 15d from the rear is pressed against the connection piece 15a by the locking piece 15c. As a result, the conductive plate 15 is brought into contact with the conductive plate 15, and the leading end of the locking piece 15c is bitten to prevent it from coming off (locking). That is, the terminal part 15 comprises what is called a quick connection terminal.

  Each conductive plate 12 is a convex piece projecting upward (that is, in the same direction as the standing piece 15b) from the edge on the side close to the other conductive plate 12 of the left and right end edges of the connection piece 15a. 15e and a guide portion 15f that protrudes forward from the front end of the convex piece 15e and is inclined in a direction away from the other conductive plate 8 in the left-right direction toward the front. The tip of the guide portion 15f (that is, the outer end in the left-right direction) is located on the outer side in the left-right direction with respect to the contact portion 8 when viewed from the front-rear direction. That is, even if the exposed core wire 14a is long when the sheath 14b of the electric wire 14 is peeled off excessively, the excess core wire 14a is moved in the left-right direction with respect to the contact portion 8 by the guide portion 15f as shown in FIG. Therefore, the excess core wire 14a does not hinder the operation of the contact portion 8. Therefore, when the length for stripping the coating 14b is not required to be strict, and the contact portion 8 and the terminal portion 15 are separated in the front-rear direction so that the excess core wire 14a does not easily reach the contact portion 8. Compared to the above, the size of the lamp socket 1 in the front-rear direction can be reduced. In addition, if the core wire 14a guided by the guide portion 15f goes to the outside in the left-right direction with respect to the contact portion 8, the tip of the guide portion 15f does not necessarily need to be positioned outside in the left-right direction with respect to the contact portion 8. For example, the extension of the tangential plane at the distal end portion of the outer surface in the left-right direction of the guide portion 15f (that is, the surface that guides the core wire 14a) may be positioned outside the contact portion 8 in the left-right direction.

  The socket body 9 has a bottomed cylindrical inner body 11 with an open front surface and a bottomed cylindrical shape with an open rear surface, and a pair of conductive plates 12 are accommodated between the inner body 11 and the inner body 11. And an inner cover 13 that prevents the conductive plate 12 from dropping off to the front of the inner body 11. Each of the inner body 11 and the inner cover 13 is made of a synthetic resin molded product, for example.

  The pair of conductive plates 12 are assembled to the inner body 11 with the pair of contact portions 8 extending upward from the connecting portion 16 facing each other and arranged side by side with the terminal portion 15 as the rear side. Here, the connecting portion 16 is formed in a U-shape projecting downward, and is positioned so as to be inserted into the conductive plate fixing portion 18 provided at the lower portion of the inner peripheral surface of the inner body 11. At the upper end portion of the contact portion 8, a hooking portion 8a is provided that is folded back in the direction away from the other conductive plate 12 in the left-right direction. The hooking portion 8a is hooked on a part of the inner cover 13 described later. As a result, the socket body 9 is positioned. In addition, a pin holding portion 8b that is bent in a convex shape in a direction away from each other is formed at a substantially central portion in the longitudinal direction of the contact portion 8 so as to make a gap between the contact portions 8 larger than other portions. The pair of lamp pins 4 are brought into contact with the contact portion 8 on the inner surface of the pin holding portion 8b.

  The inner body 11 has a cylindrical thick cylindrical portion 19 that houses the contact portion 8 and the connecting portion 16, and a bottomed cylindrical shape that has a smaller outer diameter and inner diameter than the thick cylindrical portion 19, and is a thin cylindrical portion that accommodates the terminal portion 15. The cylindrical portion 20 has a shape in which the central axes are aligned and connected in the front-rear direction so that the thick cylindrical portion 19 is the front and the thin cylindrical portion 20 is the rear. A pin introduction port 22 that communicates with a pin insertion hole 21 (described later) formed in the inner cover 13 is formed on the upper portion of the thick cylinder portion 19 so as to open forward. Further, the inner body 11 protrudes outward in the radial direction of the thick tube portion 19 from the counterclockwise side (left side in FIG. 3) when viewed from the front with respect to the pin introduction port 22 in the outer peripheral surface of the thick tube portion 19. An operation lever 23 is provided. The function of the operation lever 23 will be described later.

  The inner cover 13 includes a ring-shaped front wall 47 in which a substantially circular pin insertion hole 21 penetrates forward and backward in the center portion, and an inner peripheral wall 24 erected rearward from the peripheral portion of the front wall 47. Have. An opening 28 is formed in the upper portion of the inner peripheral wall 24, and the hooking portion 8 a of the contact portion 8 described above is hooked around the periphery of the opening 28. The front wall 47 of the inner cover 13 is provided with a notch 25 that communicates with the opening 28 of the inner peripheral wall 24 and opens the pin insertion hole 21 upward. The pin insertion hole 21 passes through the notch 25 and the opening 28. Communicates with the pin inlet 22 of the inner body 11. The diameter of the pin insertion hole 21 is set to be larger than the sum of the pitch and diameter of the pair of lamp pins 4 protruding from the base 3 (that is, the longitudinal dimension of the pair of lamp pins as a whole). Is inserted in the pin insertion hole 21 so that the inner cover 13 can be rotated relative to the base 3. 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.

  Next, the support 10 will be described. The support 10 includes a bottomed cylindrical outer body 29 having an open front surface, and an outer cover 30 attached to the front side of the outer body 29 so as to store the socket body 9 between the outer body 29 and the outer body 29. . Each of the outer body 29 and the outer cover 30 is made of, for example, a synthetic resin molded product.

  The outer body 29 has a cylindrical sliding portion 31 that houses the thick cylindrical portion 19 of the socket body 9 and an outer surface that protrudes rearward from the rear end of the sliding portion 31 and decreases in outer diameter toward the rear. And an insertion part 32 into which the thin cylindrical part 20 of the socket body 9 is inserted. The inner diameter of the sliding portion 31 is slightly larger than the outer diameter of the thick tube portion 19 of the socket body 9, and the inner diameter of the exposure hole 33 provided in the rear wall of the insertion portion 32 is the thick tube of the socket body 9. It is set to be smaller than the outer diameter of the portion 19 and slightly larger than the outer diameter of the thin cylindrical portion 20. In addition, the front and rear dimensions of the insertion portion 32 are smaller than the front and rear dimensions of the thin tube portion 20 of the socket body 9. Thus, when the socket body 9 is combined with the outer body 29, the thick tube portion 19 is fitted to the sliding portion 31 so that the rear portion of the thin tube portion 20 of the socket body 9 protrudes rearward through the exposure hole 33. become. Here, the sliding portion 31 has an operation window 34 through which the operation lever 23 of the socket body 9 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 cover 30 is a disc-shaped front wall that extends upward from the central portion and is formed with guide slits 35 that are open on both the front and rear sides and the upper side. 48 and an outer peripheral wall 36 standing rearward from the peripheral portion of the front wall 48. The guide slit 35 is set so that the dimension in the short direction (left and right direction) is slightly larger than the diameter of each lamp pin 4 so that the pair of lamp pins 4 is inserted, and the dimension in the longitudinal direction (vertical direction) is a pair. It is set larger than the sum of the pitch and diameter of the 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. By engaging with the assembly hole 38, the outer body 29 is coupled. 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 protrusion 40 that protrudes rearward is provided in a substantially central portion of the rear surface of the front wall 48 of the outer cover 30, and in a state where the socket body 9 is stored between the outer body 29 and the outer cover 30, The shaft protrusion 40 is inserted into the socket body 9 through the pin insertion hole 21 of the socket body 9. Here, the shaft projection 40 is sandwiched between the pair of contact portions 8 in the socket body 9. The guide slit 35 is also formed in the shaft protrusion 40, and the depth dimension of the guide slit 35 in the shaft protrusion 40 is set larger than the protrusion dimension of the lamp pin 4 from the base 3.

  The lamp socket 1 in which the socket body 9 is housed in the support 10 is provided with a fixing portion 41 that is provided below the outer body 29 and protrudes below the support 10 as shown in FIG. By doing so, it is fixed to the instrument body 7. Here, the lamp sockets 1 are arranged so that the front surfaces of the support 10 formed with the guide slits 35 face each other, and the lamp 5 supports the end surfaces of the caps 3 between the pair of lamp sockets 1. 10 is attached to face the front surface.

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

  With the configuration described above, the socket body 9 is supported by the support 10 so as to be rotatable about the center line of the shaft protrusion 40. The rotation range is restricted by the size of the operation window 34 provided on the outer body 29 of the support 10. That is, since the operation lever 23 provided in the socket body 9 is inserted through the operation window 34, the opening peripheral edge of the operation window 34 in the support body 10 abuts on the operation lever 23 so that the socket body 9 rotates relative to the support body 10. It functions as a regulating means for regulating the movement range, and the rotation range of the socket body 9 is determined by the dimensions of the operation window 34 in the rotation direction of the socket body 9.

  In the present embodiment, as shown in FIG. 8A, the rotation range of the socket body 9 is such that the pin introduction port 22 faces upward (hereinafter referred to as “open position”) and the socket body 9 is moved from the open position. The position is regulated between the position shown in FIG. 8B rotated 90 degrees clockwise in FIG. 8A (hereinafter referred to as “closed position”). In FIG. 8, 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 open position of FIG. 8A, the pin introduction port 22 of the socket body 9 is opened upward through the operation window 34 of the support 10. That is, in this state, the pair of lamp pins 4 can be inserted into and removed from the pin insertion hole 21 through the operation window 34 as the pin introduction port of the support 10 and the pin introduction port 22 of the socket body 9. The lamp 5 can be removed along the line. Therefore, in this state, when the lamp 5 is at a position where the lamp pin 4 is inserted into the guide slit 35 of the support 10 (hereinafter referred to as “fixed position”), the lamp 5 can be moved upward from the fixed position. it can. Here, the pair of lamp pins 4 inserted through the pin insertion holes 21 are arranged in the longitudinal direction of the guide slit 35.

  FIG. 9 shows the inside of the socket main body 9. When the socket main body 9 is in the open position, the pair of contact portions 8 have the width of the guide slit 35 as shown in FIG. Opposite direction. Therefore, although the pair of lamp pins 4 inserted into the pin insertion holes 21 are disposed between the pair of contact portions 8 in the socket body 9, the lamp pins 4 and the contact portions 8 are not in contact with each other. Yes, not electrically connected.

  On the other hand, the socket body 9 is rotated in the direction of the arrow A clockwise as viewed from the front as shown in FIG. 9B from the open position of FIG. Move to the closed position.

  When the socket body 9 is in the closed position, the pin introduction port 22 of the socket body 9 is hidden on the right side of the operation window 34 without communicating with the operation window 34 as shown in FIG. It is closed by the socket body 9. That is, in this state, the pair of lamp pins 4 cannot be inserted into and removed from the pin insertion hole 21 through the operation window 34 and the pin introduction port 22, and the lamp 5 cannot be attached or detached along the guide slit 35. Therefore, in this state, when the lamp 5 is in a fixed position where the lamp pin 4 is inserted into the guide slit 35 of the support 10, the lamp 5 cannot be moved from the fixed position.

  In the state where the socket body 9 is in the closed position, the pair of contact portions 8 are opposed to each other in the longitudinal direction of the guide slit 35 inside the socket body 9 as shown in FIG. Therefore, the pair of lamp pins 4 inserted into the pin insertion holes 21 are disposed between the pair of contact portions 8 in the socket body 9 and are brought into contact with the corresponding contact portions 8 of the conductive plate 12. At this time, the contact portion 8 has a shape in which the pair of pin holding portions 8b face each other on the rear side of the guide slit 35, and thus the pair of lamp pins 4 are sandwiched between the pair of pin holding portions 8b. . The conductive plate 12 is made of an elastic metal plate, and the interval between the pin holding portions 8b in a state where the conductive plate 12 is not elastically deformed is smaller than the sum of the pitch and the diameter of the lamp pins 4, so As a result, the contact pressure between the lamp pin 4 and the contact portion 8 is secured.

  In short, when the lamp socket 1 is used, the lamp 5 can be mounted by rotating the socket body 9 to the closed position while the lamp 5 is in a fixed position with respect to the instrument body 7. Is moved to the open position, the lamp 5 can be removed. Here, in the lamp 5, since the lamp pin 4 is inserted through the guide slit 35 of the support 10, the lamp pin 4 does not rotate with the socket body 9, and is attached / detached while being positioned at a fixed position with respect to the instrument body 7. Will be.

  As a result, when the lamp 5 is attached to and detached from the lighting fixture 6 of FIG. 2, the lamp 5 can be attached and detached without moving the lamp 5 itself by moving (turning) the socket body 9 as indicated by the arrow A. Since it is possible, it is not necessary to rotate the lamp 5, and even if the space for holding and rotating the lamp 5 is not secured around the lamp 5, the lamp 5 can be easily attached and detached. be able to. Further, in the conventional configuration in which the lamp 5 is attached / detached by moving the lamp 5 itself, if the lamp 5 becomes large, handling of the lamp 5 becomes difficult and workability of attaching / detaching the lamp 5 deteriorates. 1, the lamp 5 can be easily attached and detached simply by moving the socket body 9 regardless of the size of the lamp 5.

  By the way, the truncated cone-shaped protrusions 42 protrude rearward from the left and right sides of the shaft protrusion 40 on the rear surface of the front wall 48 of the outer cover 30. Each protrusion 42 is a spring that can be elastically deformed so that the outer ends in the left-right direction are displaced forward and backward by being separated from other parts through U-shaped slits except for the inner end in the left-right direction. It is provided on the rear surface of the outer end of the portion 44 in the left-right direction, and elastically protrudes rearward from the rear surface of the other part of the front wall 48 of the outer cover 30. Further, in the socket main body 9, recesses 43 into which the protrusions 42 are fitted are provided at a total of three positions, two positions corresponding to the protrusions 42 in the open position and one position corresponding to the left protrusion 42 in the closed position. It has been. Therefore, when the socket body 9 in the open position or the closed position is rotated, the spring portion 44 is bent and the protrusion 42 is retracted from the recess 43, and when the socket body 9 is rotated to the closed position or the closed position, the protrusion 42 fits into the recess 43, and a click feeling is obtained when the socket body 9 is rotated. In the closed position, the right protrusion 42 fits into the notch 25 of the inner cover 13. That is, the notch 25 of the inner cover 13 also performs the same function as the recess 43.

  Further, the drawing hole 17 provided in the rear wall of the socket body 9 is provided so as to penetrate along the rotation axis direction of the socket body 9 (that is, the protruding direction of the lamp pin 4), and the electric wire 14 drawn from the drawing hole 17 is a socket. The main body 9 is pulled out along the rotation axis. Therefore, even if the socket body 9 is rotated as shown by the arrow A between the open position shown in FIG. 10A and the closed position shown in FIG. The area C1 through which can pass can be kept relatively narrow. That is, it is not necessary to secure an extra space around the wire 14 when the socket body 9 is rotated.

  Furthermore, the end surface of the operation lever 23 on the side of the pin introduction port 22 (that is, in the clockwise direction when viewed from the front) is continuous with the inner peripheral surface of the pin introduction port 22. When the lamp pin 4 is slid with respect to the end surface of the operation lever 23 when the lamp pin 4 is inserted / removed through 22, the movement of the lamp pin 4 is guided by the operation lever 23. Easy to insert and remove.

  Further, the lamp socket 1 shown in FIG. 2 can temporarily hold the lamp 5 with respect to the instrument body 7 even when the socket body 9 is in the open position and the socket body 9 does not hold the lamp 5. The temporary holding part 45 which can be provided is provided. The temporary fixing portions 45 of FIG. 2 are respectively disposed on both sides of the bulb body 2 from the tube diameter direction at the center portion of the instrument body 7 in the longitudinal direction, and sandwich the lamp portion 2 in the longitudinal direction. 5 is temporarily held. 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 body 10.

  By providing the temporary holding portion 45 as described above, the lamp 5 can be positioned at a fixed position of the instrument body 7 even when the socket body 9 of the lamp socket 1 is in the open position when the lamp 5 is attached or detached. it can. 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. is there.

  Further, since it is not necessary to position the lamp 5 by hand when operating the operating lever 23 to rotate the socket body 9, the operator can move the socket body 9 to the open position to move the lamp pin 4 After the connection with the contact portion 8 is released, the lamp 5 can be attached to and detached from the temporary holding portion 45. As a result, when the lamp 5 is attached to and detached 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 portion 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 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 cap 3 along the protruding direction of the lamp pin 4 as shown in FIG. It is also possible to configure the luminaire 6 corresponding to the lamp 5 whose central axes are not collinear.

  In the lamp 5 illustrated in FIG. 11, the protruding directions of the lamp pins 4 from the caps 3 are opposite to each other, and the pair of caps 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 luminaire 6 corresponding to the lamp 5 includes a disk-shaped fixture body 7, and the lamp sockets 1 are disposed at portions corresponding to the caps 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 can be attached to and detached from the lamp socket 1 by rotating the lamp 5 around the central axis of the base 3 as in the conventional configuration. However, if the lamp socket 1 of the present embodiment described above is used, the lamp 5 can be attached and detached. That is, as shown in FIG. 11A, in the state where the socket body 9 is in the open position, the lamp 5 is moved in the direction of arrow B, and the lamp pin 4 is moved to the pin insertion hole 21 with the operation hole 34 and the pin introduction port 22 The lamp 5 is held and electrically connected by the lamp socket 1 only by rotating the socket body 9 to the closed position as indicated by an arrow A in FIG.

  As described above, if the lamp socket 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. It is. 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 collinear like the lamp 5 in which the bulb 2 is formed in a spiral shape, Therefore, it is not necessary to provide a space in the region through which the valve 2 passes when the valve 2 is rotated, which leads to downsizing of the instrument body 7.

  Further, in the lamp socket 1 shown in FIG. 11, a temporary holding portion 45 is provided in the vicinity of each support body 10, and the temporary holding portion 45 contacts the base 3 of the lamp 5 to bring the lamp 5 into contact. Since the lamp 5 is temporarily held, it is possible to temporarily hold the lamp 5 without applying a load to the bulb 2 even if the lamp 5 includes the glass bulb 2 which is difficult to secure high strength due to a narrow tube or a complicated shape. can do.

  The configuration of the lamp socket 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 used as an instrument. The lamp socket 1 of the present invention can be realized in various configurations, such as being formed integrally with the main body 7, or the support 10 being constituted by two members that can be separated in the longitudinal direction of the guide slit 35.

  Here, in the present embodiment, the contact portion 8 and the terminal portion 15 of the conductive block 12 are different from each other in the direction orthogonal to the surface of the lamp 5 facing the base 3. The lamp socket 1 according to the present embodiment is an outer surface in a section along the surface facing the base 3 of the lamp 5 and has an outer shape in a section including the terminal portion 15 facing the base 3 of the lamp 5. And is smaller than the outer shape of the cross section including the contact portion 8. Specifically, the outer diameter of the rear end portion that surrounds the terminal portion 15 in the socket body 9 (that is, the outer diameter of the thin cylindrical portion 20 of the inner body 11) is outside the front end portion that surrounds the contact portion 8 in the support body 10. It is smaller than the diameter (that is, the outer diameter of the outer peripheral wall 36 of the outer cover 30).

  According to the above configuration, the outer shape in the vicinity of the terminal portion 15 with a smaller limit is made smaller than the outer shape in the vicinity of the contact portion 8 that is limited in accordance with the pitch of the lamp pins 4. The size can be reduced as compared with the case of aligning with the outer shape of.

  Further, as in the example of FIG. 11, the lamp sockets 1 are respectively attached to both ends in the radial direction of one surface of the disk-shaped instrument body 7, and the front surface of each lamp socket 1 (that is, the surface facing the base 3) is attached. Considering the case of the lighting fixture 6 directed in the circumferential direction of the fixture body 7, respectively, in the present embodiment, the outer shape of the rear end portion is smaller than the outer shape of the front end portion as shown in FIG. As shown in FIG. 12B, each lamp socket 1 is hidden as compared to the case where the outer shape of the rear end portion is the same as the outer shape of the front end portion when viewed from the opposite side of the surface to which the lamp socket 1 is attached. The diameters D1 and D2 of the instrument body 7 selected as the minimum value can be made smaller (D1 <D2).

1 is a partially broken perspective view showing an embodiment of the present invention. It is a perspective view which shows the lighting fixture provided with the same. It is a disassembled perspective view which shows the same as the above. It is a disassembled perspective view which shows the same as the above. (A)-(e) is a figure which shows the electrically conductive board same as the above, respectively, (a) is a front view, (b) is a right view, (c) is a top view, (d) is a bottom view, (e) ) Is a rear view. It is the perspective view seen from the front side which shows a conductive plate same as the above. It is the perspective view seen from the rear side which shows the electrically conductive plate same as the above. FIG. 4A is a perspective view of a state where the socket body is in an open position, and FIG. 5B is a perspective view of a state where the socket body is in a closed position. The operation of the above is shown, (a) is a schematic view of the socket body in the open position, (b) is a schematic view of the socket body between the open position and the closed position, and (c) is the socket body. It is the schematic of the state which is in a closed position. FIG. 4A is a perspective view of a state where the socket body is in an open position, and FIG. 5B is a perspective view of a state where the socket body is in a closed position. The other example of the lighting fixture provided with the same 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 explanatory drawing which shows an effect same as the above, (a) shows the case of this embodiment, (b) shows the case of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp socket 3 Base 4 Lamp pin 5 Lamp 6 Lighting fixture 7 Appliance main body 8 Contact part 9 Socket main body 10 Support body 12 Conductive plate (Conductive block in Claim)
14 electric wire 15 terminal portion 15f guide portion 17 electric wire insertion hole 21 pin insertion hole 22 pin introduction port 34 operation window (pin introduction port in claims)
35 Guide slit (pin insertion hole in claims)

Claims (4)

A lamp socket for electrically connecting a lamp having a power supply lamp pin projecting in one direction from one base and an electric wire,
A pair of conductive blocks each made of a conductive material and having a contact portion that is in contact with the lamp pin and a terminal portion to which an electric wire is connected and corresponding to the lamp pin in a one-to-one relationship,
A socket body for storing and holding each conductive block,
In the socket body, a surface facing the lamp cap is provided with a pin insertion hole for inserting each lamp pin, and an electric wire connected to the terminal portion of the conductive block on the opposite surface of the surface facing the lamp cap. Is provided with a pair of electric wire insertion holes,
The interval between the wire insertion holes is equal to or less than the interval between the contact portions of the pair of conductive blocks,
The contact portion and the terminal portion of the conductive block are different from each other in the direction perpendicular to the surface facing the base of the lamp,
The outer shape of the cross section along the surface facing the base of the lamp and including the terminal portion is the outer shape of the cross section along the surface facing the base of the lamp and including the contact portion. A lamp socket characterized in that it is smaller than the outer shape. A support body that supports the socket body and is fixed to the fixture body of the lighting fixture,
In the socket body, a surface adjacent to the surface facing the lamp cap is provided with a pin introduction port through which each lamp pin is introduced in communication with the pin insertion hole,
In the support body, a surface facing the lamp cap is provided with a pin insertion hole that communicates with the pin insertion hole of the socket body and through which each lamp pin is inserted, and on a surface adjacent to the surface facing the lamp cap. Is provided with a pin introduction port through which each lamp pin is introduced in communication with the pin insertion hole,
The support has an open position where the pin introduction port of the support and the pin introduction port of the socket body communicate with each other so that the lamp can be attached and detached, and the pin introduction port of the support body is a conductive block, or the conductive block and the socket body 2. The lamp socket according to claim 1, wherein the socket body is rotatably supported between the closed position closed by both of the first and second positions.   In each conductive block, the surface directed toward the wire insertion hole is inclined so as to move away from the wire insertion hole as the distance from the other conductive block increases, and the electric wire is moved away from the other conductive block from the contact portion. 3. The lamp socket according to claim 1, further comprising a guide portion for guiding.   A lighting fixture comprising: at least one lamp socket according to any one of claims 1 to 3; and a fixture main body to which a support of each lamp socket is fixed.

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