JP2006221899A - Lamp socket and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp socket and a lighting fixture wherein occurrence of malfunction can be suppressed when the base of the lamp is detached from the lamp socket. <P>SOLUTION: Because the intermediate part 80 and a contact part 81 become movable while making a wall part 78 as an action point by having formed a prescribed region 82 and a gap part 83, the tip side of a lamp pin 26 and the tip end of a contact piece 76 can be separated from each other at a comparatively high speed when the lamp pin 26 is removed from the contact piece 76 of a terminal 44. That is, because the tip side of the lamp pin 26 and the tip side of the lamp pin terminal part 74 are separated by a prescribed distance from each other by an elastic action of the lamp pin terminal part 74 when the lamp pin 26 is removed from the terminal 44, continuous formation of an arc formed at the tip side of the lamp pin 26 and the tip side of the lamp pin terminal part 74 is suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

  2. Description of the Related Art Conventionally, for example, in a circular fluorescent lamp, a configuration is known in which bulbs of an annular arc tube are arranged in a double line in the radial direction of the annular plane. This annular fluorescent lamp is provided with a base having a wide width in the radial direction of an annular plane in which bulbs are doubled, and a lamp pin is provided on this base.

In addition, the lamp socket to which the annular fluorescent lamp is mounted is provided with a socket body having a width corresponding to the base, and a lamp pin insertion hole into which the lamp pin of the base is inserted is provided in the base mounting portion of the socket body. In addition, a pair of base holding portions of a base holding spring that engages and holds both sides of the base mounted on the base mounting portion protrudes. A terminal for connecting a lamp pin inserted into the lamp pin insertion hole and a power supply electric wire is disposed in the socket body.
JP-A-10-247572 (FIG. 1-5)

  By the way, for example, when the annular fluorescent lamp is attached to the lamp socket and the lamp holder disposed in the lighting fixture installed on the ceiling as described above, the arc tube is attached to the lamp holder and then attached to the lamp socket. On the other hand, an annular fluorescent lamp is often mounted so as to push up the base. Further, when the annular fluorescent lamp is detached from the lamp socket and the lamp holder, the arc tube is often detached from the lamp holder by removing the cap from the lamp socket and the arc tube is removed from the lamp holder.

  On the other hand, for example, when replacing a lamp of a lighting fixture, it is common to turn off the power, but in rare cases, the lamp may be replaced with the power on. In such a case, an arc may be drawn between the lamp pin and the socket terminal when the lamp is removed.

  Since the arc is continuously generated when the contact between the lamp pin and the terminal is slowed down, or when the lamp pin and the terminal come to a close position after leaving, the arc is continuously generated. There is a risk of getting rough.

  In the case of a conventional lamp socket, when the lamp is rarely exchanged, the lamp pin may be stationary at a position slightly separated from the lamp socket of the base. May occur. This state can occur because the lamp cannot be removed without removing the arc tube from the lamp holder.

  This invention is made in view of said point, and it aims at providing the lamp socket which can suppress that a malfunction generate | occur | produces, when a base of a lamp is removed from a lamp socket, and a lighting fixture. .

  The lamp socket according to claim 1 includes a base mounting portion provided with a lamp pin insertion hole, an electric wire mounting portion provided with an electric wire insertion hole, and a terminal arrangement portion formed inside the base mounting portion. A socket body; and a lamp pin terminal portion that faces the lamp pin insertion hole and is disposed in a terminal arrangement portion of the socket body and sandwiches the lamp pin. The lamp pin terminal portion is inserted when the lamp pin is removed from the lamp pin insertion hole. A terminal that is movable toward the hole side and is elastically returned to a predetermined position when the lamp pin is detached from the lamp pin terminal part; and a gap part formed between the lamp pin insertion hole and the lamp pin terminal part; It is characterized by having.

  The base mounting portion of the socket body is a surface on which a base such as a ring-shaped fluorescent lamp is mounted. The socket body can be provided with an attachment portion, which is a surface attached to the fixture body of the lighting fixture.

  The terminal includes a terminal having a wire terminal part for connecting an electric wire in addition to the lamp pin terminal part for connecting the lamp pin, and the material is particularly limited as long as the lamp pin terminal part is formed so as to be movable by elasticity. It is something that does not.

  The gap is formed to allow the lamp pin terminal of the terminal to move.

  According to the present invention, first, when the lamp pin is inserted from the lamp pin insertion hole, the lamp pin is sandwiched and brought into contact with the lamp pin terminal portion of the terminal to be in a conductive state. For example, when power is supplied from the lighting device of the lighting fixture to the lamp socket, power is supplied to the lamp pin through the lamp pin terminal portion.

  On the other hand, when the lamp pin is removed from the lamp socket, the lamp pin held by the lamp pin terminal portion operates in the attaching / detaching direction. Then, the lamp pin terminal portion of the terminal portion moves in the gap portion in substantially the same direction as the removal direction of the lamp pin so as to be interlocked with the operation of the lamp pin. When the lamp pin is removed from the lamp pin terminal portion, the lamp pin terminal portion is moved in the direction opposite to the lamp pin removal direction due to elasticity and is returned to a predetermined position.

  According to the present invention, when the lamp pin is removed from the terminal, the speed at which the tip end side of the lamp pin and the tip end side of the lamp pin terminal portion are separated from each other is relatively fast, and when the lamp pin is removed from the terminal, the tip end side of the lamp pin is forcibly Since the tip end side of the lamp pin terminal portion can be separated from the tip end by a predetermined distance, the arc generated on the tip end side of the lamp pin and the tip end side of the lamp pin terminal portion can be extinguished early and the arc can be continuously generated. It can suppress and can improve the reliability of a contact with a lamp pin and a lamp pin terminal part.

  According to a second aspect of the present invention, there is provided a lighting fixture comprising: a fixture main body provided with the lamp socket according to the first aspect; and a lamp attached to the lamp socket.

  The lamp may be a light source other than an annular fluorescent lamp, a polygonal ring fluorescent lamp such as a quadrangle, a straight fluorescent lamp, a single-piece fluorescent lamp, or a fluorescent lamp. In short, a lamp pin held between lamp terminal terminals. Any form may be used as long as it has.

  According to this invention, it becomes a lighting fixture which has an effect of Claim 1.

  According to the lamp socket of the present invention, it has a base mounting portion provided with a lamp pin insertion hole, a wire mounting portion provided with a wire insertion hole, and a terminal arrangement portion formed inside the base mounting portion. A socket body; and a lamp pin terminal portion that faces the lamp pin insertion hole and is disposed in a terminal arrangement portion of the socket body and sandwiches the lamp pin. The lamp pin terminal portion is inserted when the lamp pin is removed from the lamp pin insertion hole. A terminal that is movable toward the hole side and that is elastically returned to a predetermined position when the lamp pin is detached from the lamp pin terminal portion; and a gap portion formed between the lamp pin insertion hole and the lamp pin terminal portion; Because of this, when removing the lamp pin from the terminal, the tip side of the lamp pin is separated from the tip side of the lamp pin terminal part. Since the speed is relatively fast and the lamp pin is removed from the terminal, the front end side of the lamp pin and the front end side of the lamp pin terminal part can be forcibly separated by a predetermined distance, so the front end side of the lamp pin and the front end side of the lamp pin terminal part The arc generated by the above can be eliminated at an early stage, the arc can be prevented from being continuously generated, and the reliability of the contact between the lamp pin and the lamp pin terminal portion can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a partially cutaway sectional view showing a connection state between the lamp socket and the lamp of the present embodiment, FIG. 2 is a partially cutaway sectional view showing a state in which the lamp is removed from the lamp socket of the present embodiment, and FIG. It is explanatory drawing explaining the state which removes a lamp | ramp from the lamp socket of this embodiment.

  The ring-shaped fluorescent lamp 11 has a square ring-shaped arc tube 12 and a base 13 provided between both ends of the arc tube 12. The arc tube 12 is formed in a circular shape with a single bulb 16 being double-arranged in the radial direction of the ring plane of the arc tube 12 via an intermediate folding portion, Are accommodated at both ends of the base 13. The bulb 16 is made of translucent glass, a phosphor is formed on the inner surface of the bulb 16, a discharge medium is sealed inside the bulb 16, and filaments are sealed at both ends of the bulb 16, respectively.

  The base 13 has a base body 19 formed of an insulating material. This base body 19 is provided with a wide radial width of the annular plane in which the bulbs 16 of the arc tube 12 are doubled, and one of the annular plane sides is a base surface 19a to be mounted on the lamp socket side. .

  The base body 19 is provided with a groove 22 facing the base surface 19a on the one ring plane side. The groove 22 is a rectangle that is long in the radial direction of the ring plane, and the width in the short direction of the groove 22 is the longitudinal direction. The same width is formed over the entire area. A wall portion 23 is formed on both side portions of the groove portion 22 in the longitudinal direction, and a protruding stepped portion 24 is formed inside the wall portion 23.

  A lamp pin projecting surface portion 25 is formed on the inner bottom portion of the groove portion 22, and four lamp pins 26 project from the lamp pin projecting surface portion 25 perpendicular to the ring plane, and each filament of the arc tube 12 is attached to each lamp pin 26. Each is electrically connected.

  Locking groove portions 27 are formed on both sides of the base body 19 corresponding to the outer position of the wall portion 23, and a locking step portion 28 is formed in the middle of these locking groove portions 27.

  The lamp socket 41 includes a socket body 42, a holding spring 43 that holds the base 13 attached to the socket body 42, and a terminal 44 that connects each lamp pin 26 of the base 13.

  The socket body 42 is formed of an insulating material, and one side is a mounting surface 48 that is attached to the fixture body of the lighting fixture, and the base 13 of the annular fluorescent lamp 11 is mounted on the opposite side of the mounting surface 48. A base mounting surface 49 is formed.

  At both end portions of the base mounting surface 49, both end portions of the base surface 19a of the base 13, that is, a base fitting portion 50 into which the valve storage portion 20 is fitted is formed. On the attachment surface 48, a protrusion 52 for positioning inserted into a positioning hole provided in the instrument body and a boss 53 in which each attachment hole 51 is formed project.

  A convex portion 54 that fits into the groove portion 22 of the base 13 protrudes from the central portion of the base mounting surface 49, and this convex portion 54 can be fitted into the groove portion 22 in accordance with the shape of the rectangular groove portion 22. The width of the convex portion 54 in the short-side direction is the same width throughout the entire length of the convex portion 54.

  Further, as shown in FIG. 3, a terminal accommodating portion 68 for accommodating each terminal 44 is formed inside the socket main body 42 so as to correspond to each lamp pin insertion hole 57. Each terminal storage portion 68 includes a lamp pin insertion space 69 located inside each lamp pin insertion hole 57, and a wire insertion space 70 located on the side of the lamp pin insertion space 69, that is, on both sides in the longitudinal direction of the projection 54. A rising wall portion 78 is formed between the lamp pin insertion space 69 and the wire insertion space 70. An electric wire insertion hole 71 for inserting a power supply electric wire is formed on the back surface side.

  Each terminal 44 is housed in the lamp pin insertion space 69 of each terminal housing portion 68 and electrically connected to the lamp pin 26, and is housed in the wire insertion space 70 to electrically connect the wires. The electric wire terminal portion 75 is integrally provided. The lamp pin terminal portion 74 is provided with a pair of connection pieces 76 that sandwich and connect the lamp pin 26 inserted into the lamp pin insertion hole 57. Electrically connected to the wire terminal portion 75 while elastically deforming when the wire is inserted from the wire insertion hole 71 and allowing the wire to be inserted, and the tip portion bites into the inserted wire and prevents it from coming off. A locking piece 77 is provided.

  Each terminal 44 extends substantially horizontally toward the contact piece 76 side through the wall portion 78, and an intermediate portion 80 for connecting the lamp pin terminal portion 74 and the electric wire terminal portion 75 is formed. Further, a connecting portion 81 that is bent from the intermediate portion 80 so as to be in the same direction as the lamp pin insertion direction is formed. The region 82 formed by the intermediate portion 80 and the connecting portion 81 and the wall portion 78 are formed so as to have a space.

  In addition, the pair of connection pieces 76 of each terminal 44 form a predetermined gap 83 with the end of the lamp pin insertion hole 57 on the lamp pin insertion space side in the lamp pin insertion space 69 on the end side facing the lamp pin insertion hole 57. It is stored and arranged to do.

  Although not shown, the lighting fixture includes a fixture main body, a lamp socket 41 and a lamp holder attached to the fixture main body, and an annular fluorescent lamp 11 attached to the lamp socket 41 and the lamp holder.

  Next, for example, a case where the annular fluorescent lamp 11 is removed from the lamp socket 41 and the lamp holder of a lighting fixture installed on the ceiling will be described.

  As shown in FIG. 1, in the case of the lamp socket 41 as in the present embodiment, the annular fluorescent lamp 11 is often removed from the lamp holder after the base 13 of the annular fluorescent lamp 11 is removed.

  In such a case, first, the engagement between the convex portion 54 and the groove portion 22 is released, and at the same time, the one side of the base 13 is released from the holding spring 43, and the ring 13 is inclined in an oblique direction. The fluorescent lamp 11 is operated, and the lamp pins 26 and 26 are gradually pulled out from the lamp pin insertion hole 57 of the lamp socket 41.

  Then, after the base 13 is removed from the lamp socket 41, the arc tube 12 is removed from the lamp holder, whereby the removal of the annular fluorescent lamp 11 is completed.

  Here, the operation state of the terminal 44 and the lamp pin 26 in the removal process will be described with reference to FIG. 3A shows a state in which the lamp pin 26 is inserted, FIG. 3B shows a state in which the lamp pin 26 is gradually pulled out, and FIG. 3C shows a state in which the lamp pin 26 and the terminal 44 are clamped. Indicates a state in which is released.

  That is, as shown in FIG. 3B, the contact piece 76 of the lamp pin terminal portion 74 is movable in the pulling direction of the lamp pin 26 about the wall portion 78 via the contact portion 81 and the intermediate portion 80. Yes. This is because it has the region 82 formed by the wall portion 78, the contact portion 81, and the intermediate portion 80, and also has the gap portion 83, whereby the contact portion 81 and the intermediate portion 80 are the wall portion. The contact piece 76 is formed so as to be movable with reference to 78.

  As shown in FIG. 3C, when the clamped state between the lamp pin 26 and the contact piece 76 is released, the contact piece 76 is connected to the contact portion 81 and the intermediate portion 80 via the top of the wall portion 78. Is returned to the original position by the elastic action and is arranged in a predetermined manner.

  According to the present embodiment, when the lamp pin 26 is removed from the contact piece 76 of the terminal 44, the intermediate region 80 and the contact portion 81 are formed so that the predetermined region 82 and the gap portion 83 are movable. The tip side of the lamp pin 26 and the tip side of the contact piece 76 can be separated at an appropriate speed.

  That is, when the lamp pin 26 is removed from the terminal 44, the tip end side of the lamp pin 26 and the tip end side of the lamp pin terminal portion 74 can be forcibly separated by a predetermined distance by the elastic action of the lamp pin terminal portion 74. The arc generated between the side and the tip side of the lamp pin terminal portion 74 is prevented from being continuously generated.

  As a result, the arc generated between the front end side of the lamp pin 26 and the front end side of the contact piece 78 can be eliminated quickly, and the reliability of contact between the lamp pin 26 and the contact piece 78 can be improved.

  Note that, according to the present embodiment, the lamp pin 26 and the contact piece 76 are welded even when the lamp is slowly replaced while the power is being supplied to the annular fluorescent lamp 11 of the lighting fixture. It is possible to prevent the lamp pin 26 and the contact piece 76 from being roughened. This is because the arc ends with a momentary arc if the speed at which the contact is released is high, and damage to the contact portion between the lamp pin 26 and the contact piece 76 is small.

  In addition to the annular fluorescent lamp 11 of the present embodiment, for example, it is conceivable to employ the present invention for a single-piece fluorescent lamp. The method of detaching the single-piece fluorescent lamp and the lamp socket is a method of removing the lamp by holding down the arc tube on the opposite side of the single-piece base and pressing it down. In such a configuration, the lamp pin is strongly separated from the lamp pin terminal portion. Therefore, the present invention has a special effect by adopting a lamp socket for a single-piece fluorescent lamp.

Partially cutaway sectional view showing the connection between the lamp socket and the lamp of this embodiment Partially cutaway sectional view showing a state in which the lamp is removed from the lamp socket of this embodiment Explanatory drawing explaining the state which removes a lamp | ramp from the lamp socket of this embodiment.

Explanation of symbols

41 ... Lamp socket, 42 ... Socket body, 44 ... Terminal, 83 ... Gap

Claims (2)

A socket body having a base mounting portion provided with a lamp pin insertion hole, a wire mounting portion provided with an electric wire insertion hole, and a terminal arrangement portion formed inside the base mounting portion;
Facing the lamp pin insertion hole, it is provided with a lamp pin terminal part that is arranged in the terminal arrangement part of the socket body and clamps the lamp pin, and this lamp pin terminal part is movable to the lamp pin insertion hole side when the lamp pin is removed from the lamp pin insertion hole And a terminal formed so as to return to a predetermined position by elasticity when the lamp pin is detached from the lamp pin terminal portion;
A gap formed between the lamp pin insertion hole and the lamp pin terminal;
A lamp socket comprising: An instrument body provided with the lamp socket according to claim 1;
A lamp mounted in a lamp socket;
The lighting fixture characterized by comprising.

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