JP2008130385A - Lamp socket and lighting fixture using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp socket and a lighting fixture using it which can be downsized and can light a lamp with a protruded part surely locked to a locking spring. <P>SOLUTION: The lamp socket B is provided with a socket main body 4, at a front-face side of which 4, a housing concave part 5a is provided for housing a base part with a plurality of lamp pins 3 protruded at a bottom part. Insertion grooves 5c are provided at side walls of the housing concave part 5a, along an insertion direction of the lamp, and engagement grooves 5b are provided in communication with the insertion grooves 5c along a rotating direction of the lamp. Inside the insertion grooves 5c and the engagement grooves 5b, a holding spring and a locking spring 7 each is arranged for locking with the protruded parts 2a provided at the base part. Further, a plurality of conductive members 9, housed in a rear-face side of the socket main body 4, are arranged at positions in stable connection with the corresponding lamp pins 3, when the protruded parts 2a and the locking spring 7 come in a completely locked state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  Conventionally, there has been a lamp socket in which a single-piece type lamp is mounted (see, for example, Patent Document 1). The lamp socket includes a resin socket body, and a housing recess for housing a lamp cap is provided on the front side of the socket body. The both side walls along the width direction of the storage recess are provided with insertion grooves for inserting the protruding portions provided on the both side walls along the width direction of the base part, respectively. Locking grooves into which the protrusions enter when rotated are provided continuously. In addition, a locking spring for locking the protruding portion that has entered is disposed in each locking groove.

When connecting the lamp to the lamp socket, the protrusion is inserted into the insertion groove at the same time when the base is inserted into the housing recess from the front side. When the base is rotated along a surface substantially parallel to the bottom surface of the housing recess, the protrusion enters the locking groove, and when the protrusion is locked by the locking spring, the lamp is mounted on the lamp socket. The
JP 2001-357950 A (pages 3 to 4 and FIGS. 1 to 4)

  In the lamp socket shown in Patent Document 1 described above, the lamp pin and the conductive plate are in contact with each other by the holding force of the conductive plate from the direction perpendicular to the rotation track of the lamp pin. May be lit even incomplete state. However, if the use is continued in this state, the projection and the locking spring are disengaged due to vibration or the like, and the lamp may fall.

  In addition, a lamp socket that can avoid an incomplete mounting state by setting a high force when attaching and detaching the lamp and rotating the lamp vigorously has been proposed, but in this case the rotating work space for applying the force Therefore, there is a problem that the lighting fixture becomes large.

  The present invention has been made in view of the above problems, and its object is to make the lamp light in a state where the size can be reduced and the protruding portion is securely locked by the locking spring. An object of the present invention is to provide a lamp socket and a lighting fixture using the same.

  The invention of claim 1 has a housing recess on the front side into which a cap part of a single-cap lamp, in which a lamp pin protrudes from the bottom and has protrusions formed on opposite side surfaces, is inserted on the front side. An insertion groove through which the protrusion is inserted when the base part is inserted into the housing recess and an engagement groove through which the protrusion enters when the base part is rotated in one direction are formed on the side wall. A protrusion provided with a socket body, a locking spring disposed in the engagement groove and locked to the protrusion, and a conductive plate electrically connected to the lamp pin when the base is rotated in one direction. The conductive plate is arranged at a position where the lamp pin is pressed by the biasing force received by the protrusion from the locking spring in the state where the locking spring and the locking spring are completed.

  The invention of claim 2 is characterized by comprising the lamp socket according to claim 1, a lamp, and power supply means for supplying power to the lamp.

  According to the first aspect of the present invention, since the lamp pin and the conductive plate are stably connected only after the protruding portion and the locking spring are in the locked state, the locking between the protruding portion and the locking spring is incomplete. Will not be left unattended. Therefore, since the protruding portion can be reliably locked to the locking spring, there is an effect that the lamp can be prevented from falling. In addition, at the position where the urging force of the locking spring is maximized, the lamp pin receives a pushing force from the conductive plate to the front side, and if left in this state, the protrusion is pushed to the front side by the pushing force of the conductive plate. As a result, the locking between the protruding portion and the locking spring is released. Therefore, there is an effect that the protruding portion and the locking spring are hardly in an incompletely locked state.

  According to the invention of claim 2, by using the lamp socket of claim 1, there is an effect that it is possible to provide a highly safe lighting apparatus that is free from the possibility of the lamp falling. In addition, it is not necessary to increase the force applied when attaching / detaching the lamp more than necessary, and the rotation work space for attaching / detaching the lamp can be minimized, so that the lighting fixture can be miniaturized. effective.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 4, the lamp socket B according to the present invention is attached to, for example, a lighting fixture C attached to a ceiling surface (not shown), and includes an inverter 14 that supplies power to the lamp A and the lamp A, Are used to hold the lamp A in an electrically connected state.

  First, the lamp A will be described with reference to FIGS. The lamp A is a one-piece fluorescent lamp provided with an arc tube 1 formed in a spiral shape, and a base part 2 is provided on the lower end side. A plurality of (four in FIG. 4 (a)) lamp pins 3 project from the bottom of the base part 2, and projecting parts 2a and 2a are formed on one side wall of the base part 2 facing each other. Each is protruding.

  Next, the lamp socket B will be described with reference to FIGS. The lamp socket B is disposed on the front surface side of the socket body 4 having a housing recess 5a for housing the base portion 2 of the lamp A, and is provided on the back surface side of the socket body 4. The lamp pin 3 and the power line (not shown) And a holding spring that holds and temporarily holds the projection 2a when the cap 2 of the lamp A is inserted into the housing recess 5a of the socket body 4. 8 and a locking spring 7 that locks the protruding portion 2a when the base portion 2 inserted into the housing recess 5a is rotated.

  The socket body 4 is made of an insulating material and has a horizontally long, substantially box-shaped base storage portion 5 having a storage recess 5a on the front side, and a storage recess 6a for storing the conductive member 9 on the back side. The conductive member storage portion 6 is integrally formed.

  The base housing portion 5 is provided with a plurality of substantially elliptical lamp pin insertion holes 5j (four in FIG. 1A) into which the lamp pins 3 are inserted at the bottom of the housing recess 5a. Insertion grooves 5c and 5c are formed on both side walls along which the protrusions 2a and 2a provided in the base part 2 are inserted. These insertion grooves 5 c are respectively formed at diagonal positions with respect to the rotation center of the base portion 2 along the insertion direction of the lamp A (direction D in FIG. 2). Further, a chamfer 5d is provided on the front side edge of each insertion groove 5c, and a cross-section for displaying the position of the insertion groove 5c on the outer peripheral surface of the cap housing part 5 facing each insertion groove 5c. Arc-shaped protrusions 5e are integrally formed. Furthermore, on both side walls along the width direction of the storage recess 5a, engagement grooves 5b communicating with the respective insertion grooves 5c are formed along the rotation direction of the base part 2 (direction E in FIG. 2). A rib 5n is provided between the insertion groove 5c and the engagement groove 5b communicating with each other toward the back side. Further, as shown in FIG. 1, a positioning projection 5k for positioning a locking spring 7 to be described later is provided on the upper surface of each engagement groove 5b. As shown in FIG. 2, a locking recess 5p for locking the locking spring 7 is formed. Further, openings 5f and 5f communicating with the respective engagement grooves 5b are provided at portions corresponding to the respective engagement grooves 5b on the outer peripheral surface of the base housing part 5. Further, as shown in FIG. 3, an insertion locking hole 5g for inserting and locking a holding spring 8 to be described later is provided on the back surface side of the base housing portion 5, and is in the middle of the insertion locking hole 5g. At the position, a step portion (not shown) that is engaged with the retaining piece 8c of the holding spring 8 is provided.

  As shown in FIG. 3, the conductive member storage portion 6 is formed with storage recesses 6a for storing four conductive members 9 on the back surface side, and in the longitudinal direction at both ends along the width direction of the storage recesses 6a. At substantially the center, insertion locking holes 6b for inserting and locking a pair of elastic locking pieces 10a provided on the back cover 10 described later are provided.

  Here, the back cover 10 will be described with reference to FIG. The back cover 10 is formed in a substantially rectangular plate shape so as to close the opening of the storage concave portion 6a of the conductive member storage portion 6, and the portion corresponding to each insertion locking hole 6b has a locking claw 10d on the tip side. Each of the elastic locking pieces 10a has a protrusion. Further, two power supply line insertion holes 10b for inserting power supply lines are respectively provided at both ends along the longitudinal direction of the back cover 10, and each power supply line insertion hole 10b is connected to a power supply line. Each of the power line release holes 10c for releasing is connected.

  Next, the conductive member 9 will be described with reference to FIG. Each conductive member 9 is made of a conductive material, and has a substantially U-shaped holding piece 9 a for holding the lamp pin 3. Further, a quick connection terminal 9b for connecting a power supply line is integrally provided on one end side of the sandwiching piece 9a, and the insertion ports of the sandwiching piece 9a and the quick connection terminal 9b are opposite to each other. Is arranged. In addition, since the quick connection terminal 9b has a conventionally well-known structure, the description is abbreviate | omitted.

  Further, the locking spring 7 will be described with reference to FIGS. 1 and 3. The locking spring 7 has a positioning fixing piece 7a in which a positioning hole 7d is provided in a portion corresponding to the positioning protrusion 5k provided in the engaging groove 5b, and the locking recess 5p from both ends of the positioning fixing piece 7a. The locking pieces 7e and 7e that are locked to 5p are bent in a substantially C shape. In addition, a movable spring piece 7b that elastically and elastically contacts the protruding portion 2a is formed on one end side of the positioning and fixing piece 7a, and a substantially circular portion is formed at the folded portion from the positioning and fixing piece 7a to the movable spring piece 7b. An arcuate bulge 7f is provided. Further, a locking piece 7c that locks with the protruding portion 2a is formed on the distal end side of the movable spring piece 7b.

  Next, the holding spring 8 will be described with reference to FIG. The holding spring 8 has a substantially rectangular plate-like attachment piece 8b, and a holding piece 8a is formed by folding back one end side of the attachment piece 8b. The holding piece 8a is bent in a substantially square shape at the tip side, and a part of the attachment piece 8b is cut and raised at both ends in the width direction of the attachment piece 8b, and the holding piece 8a is bent away from the holding piece 8a. Stop pieces 8c, 8c are formed.

  Here, the assembly method of the lamp socket B is demonstrated based on FIG.2 and FIG.3. First, a method for attaching the conductive member 9 will be described. The holding pieces 9a of the respective conductive members 9 are inserted into the storage recesses 6a of the conductive member storage portion 6 in a state where the holding pieces 9a face the front side. Then, when each elastic locking piece 10a of the back cover 10 is inserted into the insertion locking hole 6b from the back side, the locking claw 10d of each elastic locking piece 10a is locked to the conductive member storage portion 6 respectively. The cover 10 is attached and the attachment of the conductive member 9 is completed. Each conductive member 9 is disposed at a position where the projection 2a and the locking piece 7c are stably connected to the corresponding lamp pin 3 when the locking is completed, and the bottom of the storage recess 6a and the back cover 10 are arranged. It is positioned. The clamping piece 9a is arranged facing the lamp pin insertion hole 5j, and the quick connection terminal 9b is arranged facing the power line insertion hole 10b.

  Next, a method for attaching the locking spring 7 will be described. Each locking spring 7 is inserted into the engaging groove 5b from the outside through each opening 5f. Then, when the positioning hole 7d of the positioning fixing piece 7a is press-fitted into the positioning protrusion 5k of the engaging groove 5b and the both locking pieces 7e, 7e are locked to the locking recesses 5p, 5p, respectively, the locking spring 7 Installation of is completed. In the mounted state, the movable spring piece 7b of the locking spring 7 is disposed in the engagement groove 5b.

  Further, a method for attaching the holding spring 8 will be described. The holding springs 8 are inserted into the insertion locking holes 5g from the back side with the folded portion from the attachment piece 8b to the holding piece 8a facing the front side. Then, when the retaining pieces 8c are respectively engaged with the step portions provided in the insertion locking holes 5g, the holding springs 8 are attached in a state where the holding pieces 8a of the holding springs 8 are arranged in the insertion grooves 5c. Complete. In the attached state, the retaining spring 8 is prevented from coming off in the direction opposite to the insertion direction by the retaining pieces 8c, 8c being locked to the stepped portion.

  Here, the relationship between the lamp pin 3 and the conductive member 9 and the relationship between the protrusion 2a and the locking spring 7 when the lamp A is mounted in the lamp socket B will be described with reference to FIG. First, when the base part 2 and the storage recess 5a are aligned and inserted until the base part 2 comes into contact with the bottom of the storage recess 5a, the protrusion 2a is inserted into the insertion groove 5c, as shown in FIG. Placed in position. At this time, each lamp pin 3 is inserted into the corresponding lamp pin insertion hole 5j, and is held in a non-contact state with the conductive member 9. When the base part 2 is rotated from this state, as shown in FIG. 1B, the projecting part 2 a enters the engaging groove 5 b, and the projecting part 2 a contacts the movable spring piece 7 b of the locking spring 7. At this time, each lamp pin 3 moves in the lamp pin insertion hole 5j according to the rotation operation of the cap portion 2, and contacts the corresponding conductive member 9, respectively. Further, when the base portion 2 is rotated, the movable spring piece 7b is elastically deformed by being pushed by the protruding portion 2a as shown in FIG. 1 (c). At this time, each lamp pin 3 receives a pushing force from the corresponding conductive member 9 to the front side. Accordingly, if left in this state, the lamp pin 3 is pushed to the front side by the pushing back force from the conductive member 9, and the protruding portion 2a receives a force opposite to the rotational direction. The lock is released. In this state, the protruding portion 2a receives the maximum urging force from the movable spring piece 7b. Then, when the base part 2 is further rotated from the state of FIG. 1 (c), as shown in FIG. 1 (d), the protruding part 2a is locked with the locking piece 7c while being elastically biased downward, The base 2 is held while being pressed against the bottom of the housing recess 5 a, and the lamp A is mounted on the lamp socket B. At this time, since the base portion 2 is pressed against the bottom of the housing recess 5a, each lamp pin 3 is also urged downward, so that each lamp pin 3 is pressed against the corresponding conductive member 9, and the lamp pin 3, conductive member 9 and Is connected stably. Here, the locked state between the protruding portion 2a and the locking piece 7c shown in FIG.

  On the contrary, when the lamp A is removed from the lamp socket B, first, when the cap portion 2 is rotated in the direction opposite to the mounting direction, the locking between the protruding portion 2a and the locking piece 7c is released. At this time, each lamp pin 3 is connected to the conductive member 9 in an unstable state. Further, when the base part 2 is rotated, the projecting part 2a moves to the insertion groove 5c along the engaging groove 5b. At this time, the connection between the lamp pin 3 and the conductive member 9 is released (see FIG. 1A). When the lamp A is pulled out, the protruding portion 2a moves to the front side along the insertion groove 5c, and the lamp A is removed from the lamp socket B.

  In the lamp socket B, the lamp pin 3 and the conductive member 9 are stably connected only after the protruding portion 2a and the locking piece 7c are in the locked state, so that the engagement between the protruding portion 2a and the locking piece 7c is achieved. Will not be left incomplete. Therefore, since the protrusion 2a can be reliably locked to the locking piece 7c, the lamp A can be prevented from falling. Further, at the position where the urging force received by the projecting portion 2a from the movable spring piece 7b is maximized (the position shown in FIG. 1 (c)), the lamp pin 3 receives the pushing back force from the conductive member 9 to the front side. If left untreated, the projecting portion 2a is pushed to the front side by the pushing back force of the conductive member 9, and the projecting portion 2a receives a force in the direction opposite to the rotational direction, so that the locking between the projecting portion 2a and the locking spring 7 is released. End up. Therefore, the protruding portion 2a and the locking spring 7 are unlikely to be in an incompletely locked state.

  Here, one Embodiment of the lighting fixture C using the above-mentioned lamp socket B is described based on FIG. The luminaire C includes a reflecting plate 12 having an opening on the lower surface and a flange 12a at the opening edge, and an attachment spring 13 is attached in the vicinity of the flange 12a. The reflection plate 12 is attached to the top plate 16, and a lamp socket B is disposed in the reflection plate 12. The top plate 16 is provided with an inverter 14 for supplying power to the lamp A and a power terminal block 15 to which a power line (not shown) wired from the outside is connected. Lead wire (not shown) is inserted into the power supply line insertion hole 10b, and the inverter 14 and the lamp socket B are electrically connected.

  The lighting fixture C is disposed on the back of the ceiling via an embedding hole (not shown) provided on the ceiling surface, and is mounted in a state where the ceiling material is sandwiched between the mounting spring 13 and the flange portion 12a. When the lamp A is inserted into the reflector 12 from the lower surface side as shown in FIG. 4A and the lamp A is mounted in the lamp socket B, the mounting of the lighting fixture C is completed as shown in FIG. To do.

  In this lighting fixture C, by using the lamp socket B according to the present invention, the protruding portion 2a and the locking spring 7 are not left in an incompletely locked state. It is possible to provide a highly safe lighting apparatus that does not have any. Further, it is not necessary to increase the force applied when attaching / detaching the lamp more than necessary, and the rotation work space for attaching / detaching the lamp can be minimized. Therefore, since the inner diameter (φD1 in FIG. 4B) of the reflecting plate 12 can be reduced, the luminaire C can be reduced in size.

  Note that the shapes of the locking spring 7 and the holding spring 8 described in the present embodiment are not limited to the present embodiment, and may be appropriately designed according to the arrangement location and the like. In the present embodiment, the lamp A using the spiral arc tube 1 has been described. However, the lamp A to be used is not limited to the present embodiment, and may be a single-cap type lamp. Furthermore, the shape of the socket body 4 is not limited to the present embodiment, and may be designed as appropriate.

(A)-(d) is explanatory drawing explaining the relationship between the protrusion part and latching spring at the time of mounting | wearing with the lamp socket of this embodiment, and the relationship between a lamp pin and a electrically-conductive member. It is a perspective view before mounting | wearing with a lamp | ramp same as the above. It is an exploded perspective view same as the above. (A) is a state figure before attaching a lamp to the lighting fixture using the same. (B) is a state figure of the state which attached the lamp | ramp to the lighting fixture using the same as the above.

Explanation of symbols

2 Base part 2a Projection part 3 Lamp pin 4 Socket body 5 Base storage part 5a Storage concave part 5b Engaging groove 5c Insertion groove 6 Conductive member storage part 7 Locking spring 9 Conductive member (conductive plate)
A Lamp B Lamp socket

Claims (2)

  A lamp part is provided on the front side of the lamp part having a lamp pin projecting from the bottom part and having a protrusion part formed on both side surfaces facing each other. An insertion groove through which the protrusion is inserted when inserted into the housing recess, and a socket body formed with an engagement groove that communicates with the insertion groove and into which the protrusion enters when the base part is rotated in one direction. A locking spring disposed in the engaging groove and locked to the protrusion, and a conductive plate electrically connected to the lamp pin when the base is rotated in one direction, The lamp socket, wherein the conductive plate is disposed at a position where the lamp pin is pressed by a biasing force received by the protrusion from the lock spring in a state where the protrusion and the lock spring are completely locked.   A lighting fixture comprising: the lamp socket according to claim 1; a lamp; and power supply means for supplying power to the lamp.

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