JP2009152079A - Lamp socket and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp socket capable of reducing the required operation force, and to provide a luminaire that uses the lamp socket. <P>SOLUTION: The socket body 9 can rotate with respect to a support body 10 between an open position for attaching and detaching the lamp and a close position, where a lamp side contact part of a conductive plate 12 is in contact with a lamp pin inserted in a guide slit 35. A rod terminal 51, connected to an electric wire, is held on the support body 10, and a circuit side contact part 52, which is brought into electrical contact with the rod terminal 51 at the close position is provided on the conductive plate 12. Because the rod terminal 51, connected to the electric wire does not interlock with the socket body 9, the electric wire, will not be twisted, even if the socket body 9 is rotated, returning force due to the elastic force of the electric wire is not generated. Accordingly, holding force for holding the socket body 9 at a predetermined rotation position can be reduced, and the operating force necessary for rotating the socket body 9, with respect to the support body 10 can be reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  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. Many lamp sockets that can be attached to the main body are provided (for example, see Patent Document 1).

  As this type of lamp socket, a socket case fixed to the fixture body includes a contactor that is electrically connected by contacting the lamp pin and a rotor that is rotatably supported with respect to the socket case. There is something. 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, a pair of lamp pins are inserted into the rotor side slit with the rotor side slit communicating 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. 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 removed 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, the conventional general lamp socket rotates the lamp around the central axis of the base when attaching and detaching the lamp as described above, and the central axes of both bases are the same straight as the straight tube type fluorescent lamp. It was assumed that it was on the line. 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.

  Therefore, the present inventor has proposed a lamp socket 1 as shown in FIGS. 4 to 10 in Japanese Patent Application No. 2007-17071 so that the lamp can be attached and detached without rotating the lamp itself.

  More specifically, as shown in FIG. 4, the lamp socket 1 includes a power supply lamp pin 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 4 (see FIG. 10A) can be attached to the fixture body 7 of the lighting fixture 6. Here, an example in which the lamp socket 1 is applied to a lighting fixture 6 corresponding to a straight tube lamp 5 (here, a straight tube fluorescent lamp) is shown. 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. 5 and 6, the lamp socket 1 is provided with a pair (two) of lamp pins 4 protruding from the caps 3 of the lamp 5 in a one-to-one correspondence. A conductive plate 12 having a lamp-side contact portion 8 that conducts contact, 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 are provided. In the following description, the vertical direction is based on FIG. 5, the lower left-upper right direction in FIG. 5 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 conductive plate 12 is formed by, for example, punching and bending a metal plate, and the above-mentioned lamp side contact portion 8 and the electric wire 14 for supplying power to the lamp 5 are electrically and mechanically connected. Terminal portion 15 and a connecting portion 16 that connects lamp side contact portion 8 and terminal portion 15 continuously and integrally. The rear wall of the inner body 11 is provided with a pair of leading holes 17 through which the electric wires 14 are inserted side by side in the left and right direction, and penetrates in the front and rear, and the core wires of the electric wires 14 introduced into the socket body 9 through the respective leading holes 17. 14 a is connected to the terminal portion 15.

  The terminal portion 15 has a front end continuous to the connecting portion 16 and a connection piece 15a disposed along the insertion direction of the electric wire 14 with the thickness direction directed in the vertical direction, and the insertion direction of the electric wire 14 from the rear end of the connection piece 15a. Erected piece 15b erected so that the thickness direction is in the front-rear direction so as to be orthogonal to the erected part, and the erected piece 15b extending from the tip of the erected piece 15b toward the connecting piece 15a and toward the connecting piece 15a. And a locking piece 15c inclined in a direction away from the center. In a state where the terminal portion 15 is not elastically deformed, the gap between the tip of the locking piece 15c and the connection piece 15a is slightly smaller than the diameter of the core wire 14a of the electric wire 14. 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 behind is pressed against the connection piece 15a by the locking piece 15c. Thus, contact conduction to the conductive plate 15 is ensured, 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.

  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 lamp-side contact portions 8 extending upward from the coupling 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 lamp side 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, and this hooking portion 8a is formed as a part of the inner cover 13 described later. By being hooked, the socket body 9 is positioned. Further, a pin holding portion 8b that is bent in a convex shape so as to be separated from each other is formed at a substantially central portion in the longitudinal direction of the lamp side contact portion 8 so as to make a gap between the lamp side contact portions 8 larger than other portions. ing. The pair of lamp pins 4 are electrically connected to the lamp side 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 lamp side 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 accommodates the terminal portion 15. The thin tube portion 20 is configured to be connected in the front-rear direction with the center axes thereof aligned so that the thick tube portion 19 is the front and the thin tube portion 20 is the rear. A pin introduction port 22 communicating 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 be opened 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. 5) of the outer peripheral surface of the thick tube portion 19 with respect to the pin introduction port 22 when viewed from the front. 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 lamp side 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 convex portion 40 protruding rearward is provided at a substantially central portion on the rear surface of the front wall 48 of the outer cover 30, and in a state where the socket body 9 is accommodated between the outer body 29 and the outer cover 30. The shaft convex portion 40 is inserted into the socket body 9 through the pin insertion hole 21 of the socket body 9. Here, the shaft convex portion 40 is sandwiched between the pair of lamp side contact portions 8 in the socket body 9. The guide slit 35 is also formed on the shaft convex portion 40, and the depth dimension of the guide slit 35 in the shaft convex portion 40 is set larger than the projecting dimension of the lamp pin 4 from the base 3.

  The lamp socket 1 in which the socket body 9 is accommodated in the support 10 is provided with a fixing portion 41 provided below the outer body 29 and protruding downward of 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, the operation of the lamp socket 1 will be described.

  With the above-described configuration, 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 restricting means for restricting 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 above example, the rotation range of the socket body 9 is such that the pin inlet 22 is directed upward (hereinafter referred to as “open position”) and the socket body 9 is moved from the open position as shown in FIG. It is regulated between the position shown in FIG. 7B (hereinafter referred to as “closed position”) rotated 90 degrees clockwise in FIG. 7A. In FIG. 7, 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. 7A, 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 attached and detached along the line. Therefore, in this state, when the lamp 5 is in a proper mounting position (hereinafter referred to as “fixed position”) in which the lamp pin 4 is inserted into the guide slit 35 of the support 10, the lamp 5 is moved upward from the fixed position. Can be made. Here, the pair of lamp pins 4 inserted into the pin insertion holes 21 are arranged in the longitudinal direction of the guide slit 35. Further, the guide slit 35 as a pin insertion hole of the support 10 has a dimension in the short direction slightly larger than that of the lamp pin 4, so that an operation window as a pin introduction port is formed by the inner surface of the guide slit 35. The lamp pin 4 is positioned with respect to the support 10 in each of the introduction direction (downward direction) of the lamp pin 4 from 34 and both sides (lateral direction) in the short direction of the guide slit 35.

  FIG. 8 shows the inside of the socket body 9. When the socket body 9 is in the open position, as shown in FIG. It faces in the width direction. Therefore, although the pair of lamp pins 4 inserted into the pin insertion holes 21 are disposed between the pair of lamp side contact portions 8 in the socket body 9, each lamp pin 4 and the lamp side contact portion 8 are It is in a non-contact state and is 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. 8B from the open position of FIG. Move to the closed position.

  In the state where 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.

  When the socket body 9 is in the closed position, as shown in FIG. 8C, the pair of lamp side contact portions 8 are opposed to the vertical direction which is the longitudinal direction of the guide slit 35 in the socket body 9. Yes. Therefore, the pair of lamp pins 4 inserted into the pin insertion holes 21 are disposed between the pair of lamp side contact portions 8 in the socket body 9 and contact the lamp side contact portions 8 of the corresponding conductive plates 12 respectively. Conduct. At this time, the lamp-side contact portion 8 has a pair of pin holding portions 8b facing each other on the rear side of the guide slit 35. Therefore, the pair of lamp pins 4 is a pair of pins in the vertical direction in which the lamp pins 4 are arranged. It is sandwiched between the holding portions 8b. Each conductive plate 12 is made of an elastic metal plate, and the distance 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. The contact pressure between the lamp pin 4 and the lamp side contact portion 8 is ensured by the elasticity of.

  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 or detached from the lighting fixture 6 of FIG. 4, the lamp 5 can be attached or 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, the handling of the lamp 5 becomes difficult and the workability of attaching / detaching the lamp 5 becomes worse when the lamp 5 becomes large. 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, frusto-conical convex portions 42 are provided on the left and right sides of the shaft projection 40 on the rear surface of the front wall 48 of the outer cover 30 so as to protrude rearward. Each protrusion 42 is a spring that can be elastically deformed so that the outer ends in the left-right direction are displaced back and forth by separating the other ends from the other portions through U-shaped slits except for the inner ends 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 respectively fitted are provided at a total of three locations, two locations corresponding to the respective protrusions 42 in the open position and one location corresponding to the left protrusion 42 in the closed position. It has been. Accordingly, when the socket main body 9 in the open position or the closed position is rotated, the spring portion 44 is bent and the convex portion 42 is retracted from the concave portion 43, and when the socket main body 9 is rotated to the closed position or the closed position, the convex portion. 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 convex portion 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, when the socket main body 9 is in the open position or the closed position, the respective convex portions 42 are fitted into the concave portions 43 or the notches 25, respectively, thereby generating a holding force for suppressing the rotation of the socket main body 9.

  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, when the socket body 9 rotates as shown by the arrow A between the open position shown in FIG. 9A and the closed position shown in FIG. 9B, the electric wire 14 drawn from the socket body 9 is The passing area C1 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 pin introduction port 22 side (that is, the clockwise direction when viewed from the front) is continuous with the inner peripheral surface of the pin introduction port 22, and the pin introduction port 21 is connected to the pin insertion hole 21. 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 and removed through the operation pin 22, the movement of the lamp pin 4 is guided by the operation lever 23, so that the lamp pin 4 is inserted into the pin insertion hole 21. Easy to insert and remove.

  Further, the lamp socket 1 shown in FIG. 4 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 in FIG. 4 are respectively disposed on both sides of the bulb body 2 from the tube diameter direction at the central portion in the longitudinal direction of the instrument body 7, and the lamp 2 is sandwiched between the longitudinal portions of the bulb 2. 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 a push operation portion 45b that is inclined so as to be separated from each other upward, 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. In addition, although the lower end part of the temporary holding part 45 is being fixed to the instrument main body 7, the temporary holding part 45 may be formed integrally with the support body 10. FIG.

  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 between the lamp 5 and the lamp side contact portion 8 is released, the lamp 5 can be attached to and detached from the temporary holding portion 45. Thus, even when the lamp 5 is attached to and detached from the temporary holding portion 45, the operator does not have to hold the lamp 5 in a state where the lamp pin 4 is connected to the lamp side contact portion 8, but the lamp side contact. Even if the power supply to the part 8 is not cut off, the lamp 5 can be safely attached and detached.

  By the way, if the lamp socket 1 is used, not only the lighting fixture 6 corresponding to the straight tube lamp 5 as described above, but also the central axis of the base 3 along the protruding direction of the lamp pin 4 as shown in FIG. It is also possible to configure the lighting fixture 6 corresponding to the lamp 5 that is not on the same straight line.

  In the lamp 5 illustrated in FIG. 10, 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 is used, the lamp 5 can be attached and detached. That is, as shown in FIG. 10A, 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 the arrow A in FIG.

  As described above, when the lamp socket 1 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. . 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. 10, 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. Various modifications may be made, such as forming the support body 10 integrally with the main body 7 or configuring the support 10 with two members separable in the longitudinal direction of the guide slit 35.
JP 2005-294239 A

  In the above conventional example, since the electric wire 14 is connected to the conductive plate 12 that rotates with respect to the support body 10 together with the socket main body 9, the electric wire 14 is twisted as the socket main body 9 rotates, so that the electric wire 14 The restoring force due to the elasticity of was generated. And in order to hold | maintain the socket main body 9 in an open position or a closed position against this reset force, the position of the socket main body 9 is made into an open position or a closed position like the convex part 42 of the back inner surface of the support body 10. It is necessary to increase the holding strength of the holding mechanism, and the operating force necessary for the rotation operation of the socket body 9 has been increased by increasing the holding strength of the mechanism.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a lamp socket capable of reducing a required operation force and a lighting fixture using the lamp socket.

  The invention of claim 1 is a lamp socket for electrically connecting a lamp having a pair of lamp pins for power supply protruding in one direction from one base and a lighting circuit for outputting electric power for lighting the lamp, Each lamp is made of a conductive material and has a lamp side contact portion that is in contact with the lamp pin and is electrically connected to the lighting circuit, and is fixed to the lamp body and a pair of conductive blocks corresponding to the lamp pin. A support body and a socket body rotatably supported with respect to the support body, each conductive block being held by the support body and electrically connected to the lighting circuit; and a socket body The socket body has a movable conductor having a lamp side contact portion, and in the socket body, a pair of lamp pins are inserted into a surface facing the lamp cap, respectively. Are provided, and a surface adjacent to the surface facing the lamp cap is provided with a pin introduction port that communicates with the pin insertion hole and into which the pair of lamp pins are respectively introduced, and faces the lamp cap on the support. The surface is provided with pin insertion holes through which the pair of lamp pins are inserted to communicate with the pin insertion holes of the socket body, and the surface adjacent to the surface facing the lamp cap is connected to the pin insertion holes. Pin support holes are provided for each of the lamp pins, and the support can be attached to and detached from the support body via the pin introduction port of the support body and the pin introduction port of the socket body, and the lamp pin is inserted into the pin insertion hole. The open side where the lamp side contact portion of the movable side conductor does not contact the lamp pin even if the pin is inserted into the movable side conductor or the movable side conductor and the socket body. If both are closed and the lamp pin is inserted into the pin insertion hole, the lamp body contact portion of each working side conductor supports the socket body in a closed position where it contacts and conducts to the corresponding lamp pin. In each conductive block, the fixed-side conductor and the movable-side conductor are not in contact with each other when the socket body is in the open position, and are in contact with each other when the socket body is in the closed position. It is characterized by having.

  According to the present invention, the fixed-side conductor connected to the lighting circuit side is separated from the movable-side conductor held by the lamp socket, so that the fixed-side conductor or Since the electric wire connected to the fixed-side conductor does not twist, there is no return force due to the elasticity of the fixed-side conductor or electric wire, so the socket body is held in either the open position or the closed position. Since the holding force can be reduced even when such a configuration is provided, it is possible to reduce the operating force required when rotating the socket body relative to the support. Become.

  According to a second aspect of the present invention, in the first aspect of the invention, each fixed-side conductor is electrically and mechanically connected to the other end of the electric wire made of a conductive material and having one end electrically connected to the lighting circuit. The contact terminal is provided with a connection portion and a mutual contact portion, and is held by a support.

  A third aspect of the invention is characterized by comprising at least one lamp socket according to the first or second aspect, and an instrument body to which a support body of each lamp socket is respectively fixed.

  According to the present invention, the fixed side conductor or the electric wire connected to the fixed side conductor is used by using the lamp socket in which the electric wire connected to the fixed side conductor is not linked to the socket body. The pull-out direction can be reduced as the direction intersecting the rotation axis with respect to the support of the socket body.

  According to the first aspect of the present invention, the fixed-side conductor connected to the lighting circuit side is separated from the movable-side conductor held by the lamp socket, so that the fixed side conductor is fixed even when the lamp socket is rotated. Since the electric wire connected to the conductor or the fixed conductor does not twist, there is no return force due to the elasticity of the fixed conductor or the electric wire, so the socket body can be set to either the open position or the closed position. Since the structure for holding is not necessary, and even if such a structure is provided, the holding force can be reduced, so that the operating force required for rotating the socket body relative to the support body is reduced. Is possible. In addition, when the socket body is in the open position, the fixed-side conductor and the movable-side conductor are not in contact with each other, so that the movable-side conductor is in contact with the fixed-side conductor even when the socket body is in the open position. Safety is improved compared to.

  According to the invention of claim 3, the fixed side conductor and the electric wire connected to the fixed side conductor are connected to the fixed side conductor and the fixed side conductor by using the lamp socket that does not interlock with the socket body. The direction in which the electric wire is pulled out can be reduced as the direction intersecting the rotation axis with respect to the support body of the socket body.

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

  Since the basic configuration of the present embodiment is common to the conventional example (hereinafter simply referred to as “conventional example”) described with reference to FIGS. 4 to 10, only the parts different from the conventional example will be described below. The illustration and description of the portions to be performed are omitted. Also, the vertical and horizontal directions used in the following description are defined as in the conventional example. That is, the side on which the base 3 is disposed with respect to the lamp socket 1 is referred to as the front side, and the direction in which the operation lever 23 is displaced when the socket body 9 rotates from the open position to the closed position is referred to as the right direction. The direction in which the lamp pin 4 is introduced to 35 is referred to as the downward direction.

  In this embodiment, as shown in FIGS. 1 (a) and 1 (b), the shaft convex portion 40 is not provided, and the guide slit 35 is provided even when the lamp pin 4 is rattled. 30) has a shape that is partially expanded in the left-right direction as compared with the conventional example so as not to break. Moreover, neither the spring part 44 nor the convex part 42 for holding the socket main body 9 in either the open position or the closed position is provided.

  Moreover, as shown in FIG.2 and FIG.3, the thin cylinder part 20 of the inner body 11 of the socket main body 9 is not a bottomed cylindrical shape but a cylindrical shape. Details such as a structure for connecting the inner body 11 and the inner cover 13 and a structure for holding the conductive plate 12 are not shown in FIGS. 2 and 3.

  In addition, instead of the exposure hole 33, the outer body 29 has a bottomed cylindrical shape with an open front surface, and a convex base portion 49 in which the thin cylindrical portion 20 of the inner body 11 is accommodated is projected rearward. . Further, on the rear surface of the convex part 49, two terminal insertion cylinders 50 each having a cylindrical shape with the axial direction directed in the front-rear direction and communicating between the inside and the outside of the thin cylinder part 20 are arranged to protrude rearward. ing.

  Furthermore, this embodiment has a pair of rod terminals 51 each made of a conductive material and attached to one electric wire 14. Each bar terminal 51 includes a bottomed cylindrical connecting portion 51a and a columnar contact portion 51b protruding from the center of the outer bottom surface of the connecting portion 51a. Each of the bar terminals 51 has a connecting portion 51a attached to the other end of the electric wire 14 whose one end is connected to a lighting circuit (not shown), and is in contact with the axial direction of the contact portion 51b in the front-rear direction. By fitting the connecting portion 51a into the terminal insertion tube 50 with the portion 51b as the front side, the contact portion 51b is held by the outer body 29 so as to protrude vertically in the convex portion 49. Each bar terminal 51 is electrically and mechanically connected to the electric wire 14 by, for example, fitting the electric wire 14 into the connecting portion 51a.

  Further, each conductive plate 12 is provided with a circuit side contact portion 52 that is in contact with the contact portion 51 b of the bar terminal 51 when the socket body 9 is in the closed position, instead of the terminal portion 15. Description will be made with reference to the orientation in a state where the socket body 9 is in the open position. The circuit side contact portion 52 includes a connection piece 52a whose front end is connected to the connection portion 16 and whose thickness direction is directed in the vertical direction, and a connection piece 52a. And a contact piece 52 b that protrudes upward from the inner end in the left-right direction of the rear end portion, and the inner surface in the left-right direction contacts and conducts with the contact portion 51 b of the bar terminal 51. The contact piece 52b is provided with a terminal holding portion 52c that is bent so as to form a recess into which the contact portion 51b of the bar terminal 51 is fitted on a surface that is in contact with the contact portion 51b of the bar terminal 51. Since the distance between the terminal holding portions 52c in a state where they are not elastically deformed is smaller than the sum of the distance between the center axes of the contact portions 51b of the rod terminals 51 and the diameter, the elasticity of the rod terminals 51 is caused by the elasticity of the conductive plate 12. The contact pressure between the contact part 51b and the circuit side contact part 52 of the conductive plate 12 is ensured.

  That is, the circuit side contact portion 52 of each conductive plate 12 is positioned on the left and right sides of the contact portion 51b of the bar terminal 51 in the open position, similarly to the separation and contact of the lamp side contact portion 8 of the conductive plate 12 with respect to the lamp pin 4. In the closed position, it does not contact the bar terminal 51 and elastically contacts the contact part 51b of the bar terminal 51 from the outside in the vertical direction at the concave surface of the terminal holding part 52c.

  That is, each of the bar terminals 51 is a contact terminal in the claims and is a fixed conductor, and each of the conductive plates 12 is a movable conductor in the claims, and the corresponding bar terminal 51 and the conductive plate 12 are mutually corresponding. And the conductive block in the claims. Further, the contact portion 51b of each bar terminal 51 and the circuit side contact portion 52 of each conductive plate 12 are mutual contact portions in the claims.

  According to the above configuration, the bar terminal 51 as the fixed-side conductor connected to the electric wire 14 is separated from the conductive plate 12 as the movable-side conductor that is in contact with the lamp pin 4 and does not interlock with the socket body 9. As a result, even if the socket body 9 is rotated, the electric wire 14 is not twisted, so that no restoring force due to the elastic force of the electric wire 14 is generated. Accordingly, since the holding force for holding the socket body 9 at the predetermined rotation position can be reduced, it is possible to reduce the operation force required when the socket body 9 is rotated with respect to the support 10.

  Further, since the conductive plate 12 is not electrically connected to the electric wire 14 in the open position, the safety is further improved as compared with the case where the conductive plate 12 is always connected to the electric wire 14 as in the conventional example.

  The lamp socket of this embodiment can be used for the lighting fixture 6 shown in FIG. 4 and FIG.

  Here, in the lighting fixture 6 using the lamp socket 1 described in the conventional example, since the socket body 9 and the electric wire 14 are interlocked, the range in which the electric wire 14 moves as the socket main body 9 rotates is reduced. In order to reduce the restoring force due to the elasticity of the electric wire 14, the direction in which the electric wire 14 is pulled out needs to be the rear, which is the direction along the rotation axis of the socket body 9. On the other hand, in the lighting fixture using the lamp socket 1 of the present embodiment, since the electric wire 14 is not interlocked with the socket main body 9, the electric wire 14 is set so that the direction in which the electric wire 14 is pulled out intersects the rotation axis of the socket main body 9. It is also possible to reduce the size by reducing the drawing range.

(A) (b) is explanatory drawing which shows operation | movement of embodiment of this invention, respectively, (a) shows the state in which a socket main body exists in an open position, (b) shows the state in which a socket main body exists in a closed position. Show. It is a disassembled perspective view which abbreviate | omitted the outer cover which shows the same as the above. It is the disassembled perspective view which abbreviate | omitted the outer cover and shows it from the direction different from FIG. 2 which shows the same. It is a perspective view which shows the lighting fixture provided with the conventional lamp socket. It is a disassembled perspective view which shows the conventional lamp socket. It is a disassembled perspective view which shows the 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp socket 4 Lamp pin 5 Lamp 6 Lighting fixture 7 Appliance main body 8 Lamp side contact part 9 Socket main body 10 Support body 12 Conductive board (movable side conductor in Claim)
14 electric wire 21 pin insertion hole 22 pin introduction port 34 operation window (pin introduction port in claims)
35 Guide slit (Pin insertion hole in claims)
51 Bar terminal (fixed-side conductor, contact terminal in claims)
51a Contact part (mutual contact part in claims)
52 Circuit side contact part (mutual contact part in claims)

Claims (3)

A lamp socket for electrically connecting a lamp having a power supply lamp pin protruding in one direction from one base and a lighting circuit for outputting power for lighting the lamp,
A pair of conductive blocks each made of a conductive material and having a lamp side contact portion that is in contact with the lamp pin and electrically connected to the lighting circuit and corresponding one-to-one with the lamp pin;
A support fixed to the fixture body of the lighting fixture;
A socket body rotatably supported with respect to the support body,
Each conductive block is composed of a fixed-side conductor that is held by a support and electrically connected to a lighting circuit, and a movable-side conductor that is held by a socket body and has a lamp-side contact portion,
In the socket body, a pin insertion hole into which a pair of lamp pins are inserted is provided on the surface facing the lamp cap, and a pair of holes connected to the surface facing the lamp cap communicates with the pin insertion hole. Pin inlets are provided for each of the lamp pins,
In the support, a surface facing the base of the lamp is provided with a pin insertion hole that communicates with the pin insertion hole of the socket body and through which the pair of lamp pins are respectively inserted, 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 and into which a pair of lamp pins are respectively introduced.
The support is connected to the pin introduction port of the support and the pin introduction port of the socket body so that the lamp can be attached and detached. Even if the lamp pin is inserted into the pin insertion hole, the lamp side contact portion of the movable conductor is not provided. The open position where it does not contact the lamp pin and the pin introduction port of the support body are closed by the movable conductor or both the movable conductor and the socket body, and the lamp pin is inserted through the pin insertion hole. The socket side of the body supports the socket body in a freely rotatable manner between the closed positions where the lamp side contact portions are in contact with the corresponding lamp pins.
In each conductive block, the fixed-side conductor and the movable-side conductor have mutual contact portions that do not come into contact with each other when the socket body is in the open position and are in contact with each other when the socket body is in the closed position. Lamp socket characterized by.   Each fixed-side conductor is supported by having a connection portion and an mutual contact portion that are electrically and mechanically connected to the other end of the electric wire, one end of which is made of a conductive material and electrically connected to the lighting circuit. The lamp socket according to claim 1, further comprising a contact terminal held on the body.   A lighting fixture comprising: at least one lamp socket according to claim 1 or 2; and a fixture main body to which a support of each lamp socket is fixed.

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