JP5118561B2 - Lamp socket and lighting fixture - Google Patents

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. 2 to 8 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. 2, the lamp socket 1 includes a power supply lamp pin that protrudes 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. 8A) 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.

  Further, as shown in FIGS. 3 and 4, the lamp socket 1 is provided with a pair (two) of the lamp pins 4 protruding from the caps 3 of the lamp 5 in a one-to-one correspondence. A conductive block 12 having a lamp-side contact portion 8 that conducts contact, a socket body 9 that stores and holds each conductive block 12, and a support body 10 that supports the socket body 9 with respect to the instrument body 7 are provided. 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 do not necessarily coincide with the directions in the actual use state.

  Each conductive block 12 is formed by punching and bending a metal plate, for example, 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 having an open front surface and a bottomed cylindrical shape having a rear surface opened, and a pair of conductive blocks 12 are accommodated between the inner body 11 and the inner body 11. And an inner cover 13 that prevents the conductive block 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 blocks 12 are assembled to the inner body 11 with the pair of lamp-side contact portions 8 extending upward from the connecting portion 16 arranged side by side so as to face each other and 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 block 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. 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 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 claw 26 protruding from the inner peripheral surface of the thick cylindrical portion 19 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 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, 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 axial 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 10 abuts on the operation lever 23 so that the socket body 9 rotates relative to the support 10. It functions as a regulating means for regulating the 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 range of rotation of the socket body 9 is such that the pin inlet 22 is directed upward (hereinafter referred to as “open position”) as shown in FIG. The position is regulated between the position shown in FIG. 5B (hereinafter referred to as “closed position”) rotated 90 degrees clockwise in FIG. In FIG. 5, 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. 5A, 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, since the guide slit 35 as the pin insertion hole of the support 10 has a dimension in the short direction slightly larger than the diameter of the lamp pin 4, the inner surface of the guide slit 35 serves as a pin introduction port. 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 the operation window 34 and both sides of the guide slit 35 in the short direction (left-right direction).

  FIG. 6 shows the inside of the socket body 9, and 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 clockwise arrow A direction as viewed from the front as shown in FIG. 6 (b) from the open position of FIG. 6 (a), thereby closing the socket body 9 as shown in FIG. 6 (c). Move to position.

  In the state where the socket body 9 is in the closed position, as shown in FIG. 5B, 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, that is, the operation window 34 is 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, as shown in FIG. 6C, the pair of lamp side contact portions 8 are opposed to the vertical direction which is the longitudinal direction of the guide slit 35 inside 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 with the lamp side contact portions 8 of the corresponding conductive blocks 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 block 12 is made of a metal plate having elasticity, and the interval between the pin holding portions 8b when not elastically deformed is made smaller than the sum of the pitch and diameter of the lamp pins 4, so that the conductive block 12 The contact pressure between the lamp pin 4 and the lamp side contact portion 8 is ensured by the elasticity of.

  In short, in the lamp socket 1 described above, when the socket body 9 is rotated to the closed position while the lamp 5 is in a fixed position with respect to the support body 10, the lamp 5 can be mounted and the socket body 9 is opened. The lamp 5 can be removed by rotating it to the position. Here, in the lamp 5, since the lamp pin 4 is inserted through the guide slit 35 of the support body 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 support body 10. It will be.

  That is, when the lamp 5 is attached to and detached from the lighting fixture 6 in FIG. 2, the lamp 5 can be attached and detached by moving (rotating) the socket body 9 as indicated by the arrow A with respect to the support 10. Since it is not necessary to rotate 5 itself, even when the space for holding and rotating the lamp 5 is not secured around the lamp 5, the attaching and detaching work of the lamp 5 can be easily performed. Further, in the conventional configuration in which the lamp 5 is attached / detached by rotating the lamp 5 itself, when the lamp 5 becomes large, handling of the lamp 5 becomes difficult and workability of attaching / detaching the lamp 5 deteriorates. 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. Therefore, 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 is Since it fits into the recess 43, a click feeling is obtained when the socket body 9 rotates. 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 lead-out hole 17 provided in the rear wall of the socket main body 9 is provided so as to penetrate along the rotation axis direction of the socket main body 9 (that is, the protruding direction of the lamp pin 4), and the electric wire 14 drawn from the lead-out hole 17 is connected to the socket main body. 9 will be pulled out along the rotation axis. Therefore, when the socket body 9 rotates as shown by the arrow A between the open position shown in FIG. 7A and the closed position shown in FIG. 7B, the electric wire 14 drawn out from the socket body 9 passes. The area C1 to be performed can be kept relatively narrow. That is, it is not necessary to secure an extra space around the electric wire 14 when rotating the socket body 9.

  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. 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. .

  Further, since it is not necessary to position the lamp 5 by hand when operating the operation lever 23 to rotate the socket body 9, the operator can move the socket body 9 to the open position to move the lamp pin 4 to the open position. After the connection with 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. 8, 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 is 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. 8A, 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 on the same straight line as the lamp 5 in which the bulb 2 is formed in a spiral shape, It is not necessary to provide a space in a region through which the valve 2 passes when the valve 2 rotates, which leads to downsizing of the instrument body 7.

  Further, in the lamp socket 1 shown in FIG. 8, 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 block 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 conventional example, when the lamp 5 is attached, the socket body 9 is rotated with respect to the support 10 by operating the operation lever 23 in a state where the lamp pin 4 is introduced from the operation hole 34 and inserted into the guide slit 35. It was necessary and the installation of the lamp 5 was troublesome.

  This invention is made | formed in view of the said reason, The objective is to provide the lamp socket and lighting fixture with which a lamp | ramp is easy to attach.

  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 in a one-to-one relationship, a socket main body for holding each conductive block, a socket main body and a lighting fixture fixture main body The socket body is provided with a pin insertion hole into which a pair of lamp pins are inserted, and adjacent to the surface facing the lamp base. The surface 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 facing surface is provided with pin insertion holes through which the pair of lamp pins are inserted in communication with the pin insertion holes of the socket body, and the surface adjacent to the surface facing the lamp cap is in communication with the pin insertion holes. A pair of lamp pins is provided, and the support has an open position in which the pin introduction port of the support and the pin introduction port of the socket body communicate with each other, and the support can be attached and detached. And the closed position where the contact portion of each conductive block comes into contact with the corresponding lamp pin if the pin introduction port is closed by the conductive block or both the conductive block and the socket body and the lamp pin is inserted into the pin insertion hole. The socket body is rotatably supported, and the pin insertion hole of the support body is provided at a position shifted from the rotation axis of the socket body with respect to the support body, Wherein the socket body by the pushing force which the contact portions of the conductive block receives from the lamp pins is rotatable from an open position relative to the support member to the closed position.

  According to the present invention, the pin insertion hole of the support body is provided at a position shifted from the rotation axis of the socket body with respect to the support body, and the socket body is attached to the support body by the pressing force received from the lamp pin by the contact portion of the conductive block. On the other hand, since it can rotate from the open position to the closed position, when installing the lamp, it is only necessary to push the lamp pin from the pin introduction port into the pin insertion hole, and there is no need for a separate operation for rotating the socket body. The lamp can be easily attached compared to the case where a separate operation for rotating the socket body is required.

  According to a second aspect of the present invention, in the first aspect of the invention, the socket body has a lid portion that covers the contact portion of each conductive block when viewed from the outside of the pin introduction port of the support member in the closed position. .

  According to this invention, compared with the case where the contact portion of each conductive block is exposed without providing the lid portion on the socket body, there is an electric shock or a ground fault due to contact of a person or an object with the contact portion of the conductive block being energized. Therefore, safety is improved.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a return spring is provided that applies a return force from the open position to the closed position on the socket body.

  According to this invention, since the socket body is more reliably displaced to the closed position than when no return spring is provided, the lamp is more reliably prevented from falling off.

  The invention of claim 4 is characterized by comprising at least one lamp socket according to any one of claims 1 to 3 and an instrument body to which a support of each lamp socket is fixed.

  According to the first aspect of the present invention, the pin insertion hole of the support is provided at a position shifted from the rotation axis of the socket main body with respect to the support, and the socket main body is moved by the pressing force received by the contact portion of the conductive block from the lamp pin. Since it can rotate from the open position to the closed position with respect to the support body, when installing the lamp, it is only necessary to push the lamp pin into the pin insertion hole from the pin introduction port, and there is no need for a separate operation for rotating the socket body. Therefore, it is easier to mount the lamp than when a separate operation for rotating the socket body is required.

  According to the second aspect of the present invention, the socket body has the lid portions that respectively cover the contact portions of the respective conductive blocks when viewed from the outside of the pin introduction port of the support member in the closed position. Compared with the case where the contact portion of each conductive block is exposed, safety is improved because an electric shock and a ground fault due to contact of a person or an object with the contact portion of the conductive block being energized are prevented.

  According to the invention of claim 3, since the return spring for applying the return force from the open position to the closed position is provided to the socket main body, the socket main body is more reliably brought into the closed position than when no return spring is provided. Since it is displaced, the lamp is more reliably prevented from falling off.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS.

  Since the basic configuration of this embodiment is the same as that of the conventional example described with reference to FIGS. 2 to 8, detailed illustration and description are omitted, and only the characteristic part of this embodiment will be described. As for the expression of the direction, the top, bottom, left, and right are based on FIG. 1B, and the lower part of FIG. That is, similarly to the above-described conventional example, the surface where the guide slit 35 is opened is referred to as the front surface, and the direction in which the lamp pin 4 is removed from the guide slit 35 is referred to as the upper side.

  In the present embodiment, the guide slit 35 is provided on the support 10 at a position shifted to the right side from the rotation axis O of the socket body 9. The guide slit 35 and the operation hole 34 are separated, and the support 10 is provided with a pin introduction port 49 that is separated from the operation hole 34 and communicates with the guide slit 35 and opens upward. As shown in FIGS. 1 (a) and 1 (b), each conductive block 12 has a one-to-one contact with the lamp-side contact portion 8 when the socket body 9 is in the closed position, and FIG. As shown in FIG. 1C and FIG. 1D, when the lamp pin 4 is displaced in the vertical direction with respect to the guide slit 35 and is in an open position where it can be inserted and removed through the pin introduction port 49, one of the lamp pins 4 corresponding to the lower lamp pin 4 Only the conductive block 12 is held by the socket body 9 in such an arrangement that the lamp side contact portion 8 is exposed in the pin introduction port 49 when viewed from above. Further, the rotation of the socket body 9 from the closed position to the open position is counterclockwise when viewed from the front. To rotate the socket body 9 in this way, the arrow C in FIGS. As shown, the operating lever 23 is displaced so as to tilt to the left.

  Further, the socket body 9 has a lid portion 50 that closes the pin introduction port 49 in the closed position. In the closed position, the lamp side contact portion 8 and each lamp pin 4 of each conductive block 12 are covered with the lid portion 50 as viewed from the outside (ie, above) of the pin introduction port 49, so that the lamp side contact portion that is energized is covered. Electric shocks and ground faults caused by contact of persons or objects with the 8 or the lamp pin 4 are prevented, and safety is ensured. Further, in the socket body 9, when viewed from the front, the vicinity of the lamp side contact portion 8 of the conductive block 12 is a pin insertion hole according to the claims, and is an opening on the lower right side of the lid portion 50 in the closed position, and upward in the open position. The opening directed to is the pin inlet in the claims.

  Further, even in the state shown in FIG. 1 (c), the lid 50 is retracted to the left and the above-described pin introduction port is directed upward, so that the lamp pin 4 can be pulled out upward. 1 (d), the lamp pin 4 is pushed up by the lamp side contact portion 8 of the conductive block 12 corresponding to the lower lamp pin 4, so that the upper lamp pin 4 is As shown by the arrow D, since it is taken out from the pin introduction port 49, the removal of the lamp 5 becomes easier.

  Further, a locking projection 51 is provided on the inner peripheral surface of the support body 10, and the socket body 9 is provided with a non-locking projection 52 that is locked to the locking projection 51 in the closed position. It has been. That is, when the non-locking convex portion 52 is locked to the locking convex portion 51, the rotation of the socket main body 9 that is not intended by the user and the rotation from the closed position to the open position is suppressed. Further, when the socket body 9 reaches the closed position or when the socket body 9 rotates from the closed position, the socket body 9 and the support body 10 are elastically deformed, and the non-locking convex portion 52 is locked. A feeling of clicking is given by getting over the convex portion 51.

  According to the above configuration, when the lamp 5 is mounted, the lamp-side contact portion 8 of the conductive block 12 is pushed downward from the lamp pin 4 simply by introducing each lamp pin 4 into the pin introduction port 49 and pushing the lamp 5 downward. Since the socket body 9 is rotated to the closed position by receiving the force, there is no need to operate the operation lever 23. Therefore, it is easier to attach the lamp 5 than in the case where the introduction of the lamp pin 4 and the rotation operation of the socket body 9 are separately required as in the conventional example.

  In addition, you may provide the return spring which provides the socket body 9 with the return force to a closed position (namely, rotational force to clockwise direction in FIG.1 (b)-(d) with respect to the support body 10). As the return spring, for example, a suitably shaped elastic body such as a leaf spring or a coil spring can be used. Since such a return spring can be realized by a well-known technique, illustration and detailed description thereof are omitted. By adopting this configuration, the socket body 9 is more reliably displaced to the closed position, so that the lamp 5 is more reliably prevented from falling off.

  The lamp socket 1 as described above can be used for the lighting fixture 6 as shown in FIG. 2 or the lighting fixture 6 as shown in FIGS.

(A)-(d) is explanatory drawing which shows the positional relationship between the main structures in embodiment of this invention, respectively, (a) was seen from the direction where a lamp pin is pulled out when a socket main body exists in a closed position. (B) shows the state when viewed from the direction parallel to the rotation axis of the socket body relative to the support when the socket body is in the closed position, and (c) shows the state when the socket body is in the open position. The state seen from the direction parallel to the rotation axis of the socket main body with respect to the body is shown. (D) is the rotation axis of the socket main body with respect to the support when the socket main body is rotated further in the direction away from the closed position than (c). The state seen from the direction parallel to is shown. 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 3 Base 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 block 15 Terminal part 35 Guide slit (Pin insertion hole in a claim)
49 Pin introduction port 50 Lid

Claims (4)

A lamp socket for electrically connecting a lamp having a power supply lamp pin protruding 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 holding each conductive block;
A support that supports the socket body and is fixed to the fixture body of the lighting fixture;
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 through which a pair of lamp pins are introduced in communication with the pin insertion hole,
The support includes an open position where the pin introduction port of the support and the pin introduction port of the socket body communicate with each other and the lamp can be attached / detached, and the pin introduction port of the support body has a conductive block, or the conductive block and the socket body. The socket body is rotatably supported between the closed position where the contact portion of each conductive block is in contact with the corresponding lamp pin if the lamp pin is inserted through the pin insertion hole.
The pin insertion hole of the support body is provided at a position shifted from the rotation axis of the socket body relative to the support body, and the socket body is closed from the open position to the support body by the pressing force received by the contact portion of the conductive block from the lamp pin. Lamp socket characterized by being rotatable to   The lamp socket according to claim 1, wherein the socket body has a lid portion that covers the contact portion of each conductive block when viewed from the outside of the pin introduction port of the support in the closed position.   The lamp socket according to claim 1, further comprising a return spring that applies a return force from the open position to the closed position with respect to the socket body.   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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