JP4205011B2 - Single base lamp socket and lighting fixture - Google Patents

Description

The present invention relates to a single-piece lamp socket and a lighting fixture such as a high-wattage, large-size single-piece fluorescent lamp socket, for example, a lamp rotation mounting method, that is, a bayonet coupling method.

  In recent years, high wattage and large size of single-piece fluorescent lamps have been advanced as an alternative light source for HID lamps, and therefore it is necessary to improve the reliability of lamp holding.

  Conventional HID lamps have many screw-in types, so there are many screw-in rotations when they are installed in the lamp socket, so the possibility of the lamp falling is very low even if the lamp is tightened somewhat.

On the other hand, as a conventional single-piece fluorescent lamp socket, there is a bayonet-type socket in which a single-piece lamp is inserted into a lamp socket and rotated in one direction. For example, as shown in FIGS. 5 and 6, a central recess 101 is provided at the center of the lamp socket 100, and a columnar protrusion 103 that fits into the central recess 101 is provided on the single-cap lamp 102. And a lamp holding portion 106 in which a plurality of lamp holding groove portions 105 for fitting the protrusions 104 to the one-piece lamp 102 are provided. As a result, the one-piece lamp 102 is inserted into the lamp socket 100 and rotated and held. Further, the lamp socket 100 is formed with a locking concave portion 107 for a lamp rotation positioning receiving portion , while the one-piece lamp 102 is formed with a convex portion 108 for rotation positioning portion. The convex portion 108 is formed on an elastic deformation spring 109 formed on the base surface, and the elastic deformation spring 109 is usually formed integrally with a resin base. In this case, the prevention of detachment due to rotation in the direction opposite to the lamp rotation direction is achieved by engaging the projection 108 provided on the elastic deformation spring 109 formed on the single-piece lamp 102 and the engagement recess 107 of the lamp socket 100. 100% dependent. In addition, 110 is a lamp terminal, 111 is a lamp pin which contacts the lamp terminal 110, 112 is a watt identification protrusion, and 113 is a watt identification groove.

In addition, a fixed spring that rotates together with the columnar protrusion of the single-cap lamp is provided in the concave portion that fits the columnar protrusion of the single-cap lamp, and a convex portion that generates a click is provided in the fixed spring. There is also a lamp socket for forming a rotation and positioning in the rotational direction (see Patent Document 1).
JP-A-9-35837

In conventional lamp sockets and lamps, if the strength of the elastic deformation spring 109 is increased in order to improve the click feeling when the lamp is attached / detached, the resin tends to be damaged, and the resin forming the elastic deformation spring 109 is deteriorated due to long-term high-temperature use. If the convex portion 108 or the like is damaged due to the operation, only the holding force of the lamp terminal 110 is obtained. Therefore, in various vibration states (including slight vibration), there is a possibility that the single-piece lamp 102 may fall gradually and fall. there were. The same applies to Patent Document 1.

Therefore, an object of the present invention is to provide a single-piece lamp socket and a lighting fixture that can improve the safety and reliability of lamp mounting.

The single-piece lamp socket of the present invention is a bayonet coupling system in which single-piece lamps having a lamp holding part for connection and a rotation positioning part are attached to each other and rotated in one direction. A holding portion receiving portion that holds and holds the lamp holding portion in a direction opposite to the alignment direction when the one-piece lamps are aligned and rotated in the one direction; A positioning receiving portion for positioning and locking the rotary positioning portion in a direction opposite to the rotation direction when the one-piece lamps are combined and rotated in the one direction; And a lamp support spring that acts on the one-piece lamp with a force that prevents the one-piece lamp from rotating in a direction opposite to the rotation direction in a state where the rotation positioning section is positioned on the positioning receiving section.

In the above configuration, the single-piece lamp socket is composed of a groove for insertion and a groove for rotation, and a substantially L-shaped groove for guiding the single-piece lamp with respect to the single-piece lamp socket includes the single-piece lamp and the single-piece lamp. is formed on one of the socket, to form a protrusion that slides the groove when the phase combined and rotating said single base lamp to the other, the combination of single capped lamp and single capped lamp socket configurations to be fitted with each other Applied. The lamp support spring abuts against the lamp holding part and acts on the lamp holding part to prevent the one-piece lamp from rotating in the direction opposite to the rotation direction.

The luminaire of the present invention has the single-piece lamp socket configured as described above.

According to the one-piece lamp socket of the present invention, in order to prevent the one-piece lamp from coming off due to the rotation in the direction opposite to the lamp rotation direction, the relationship between the rotation positioning portion formed on the one-piece lamp and the positioning receiving portion of the one-piece lamp socket is provided. In addition to stopping, a lamp support spring is provided, and when the one-piece lamp has been installed, a force that prevents rotation of the one-piece lamp in the disengagement direction is applied in a state where the positioning part is positioned on the positioning receiving part. The safety and reliability of lamp mounting can be improved.

  Even if the rotary positioning part or the positioning receiving part is damaged during use, it is safe because the lamp can be held by the lamp support spring.

  In order to prevent the lamp support spring from coming into contact with the lamp holder at the position where the single-piece lamp is completely installed, it can prevent vibration and movement between the lamp pin and the lamp terminal. Contact reliability is improved because the contact between the pin and the lamp terminal does not shift.

An embodiment of the present invention will be described with reference to FIGS. That is, in the lighting fixture, the one-piece lamp socket 1 has a bayonet coupling structure in which the one-piece lamp 4 having the connecting lamp holding portion 2 and the rotation positioning portion 3 is inserted and rotated in one direction. .

  First, the single base lamp 4 will be described. Eight lamp bulbs 6 are erected on the upper surface of a resin-made column-shaped lamp cap 5, and a columnar protrusion 7 is projected from the center of the lower surface. A substantially L-shaped groove 8 including an insertion groove 8a and a rotation groove 8b for guiding the insertion and rotation of the single cap lamp 4 is formed on the peripheral surface of the columnar protrusion 7. This groove 8 is also used for watt identification. A total of four lamp pins 9 are erected on both sides of the columnar protrusion 7 on one diameter line centering on the columnar protrusion 7. The lamp holding part 2 is provided at four positions on the peripheral edge of the lower surface of the lamp base 5, that is, at the peripheral edge in the direction in which the lamp pins 9 are arranged and in the direction perpendicular thereto. A lamp holding groove 2a that is open in the direction is formed. The rotation positioning portion 3 is formed between the lamp holding portion 2 and the columnar protrusion 7 in the direction orthogonal to the direction in which the lamp pins 9 are arranged on the lower surface of the lamp base 5, and has a locking projection 3 a and a locking projection 3 a. By forming the slits 3b on both sides, the elastic deformation spring 3c made of resin formed between the slits 3b is formed. The elastic deformation spring 3c imparts elasticity in the protruding direction to the locking convex portion 3a.

The single-piece lamp socket 1 will be described. That is, the one-piece lamp socket 1 includes a body 11 having a lower surface opening and a cover 12 that closes the lower surface opening. The body 11 has a cylindrical shape having a diameter that enters the inside of the lamp holding portion 2 of the lamp base 5, has a recess 13 into which the columnar protrusion 7 is rotatably inserted in the center of the body 11, and is provided on both sides of the recess 13. It has an arc-shaped lamp pin insertion hole 14 into which each lamp pin 9 is inserted. On the inner peripheral surface of the recess 13, a projection 15 serving as a watt identification and guided by the groove 8 is provided. Accordingly, when the watt identification is correct, the protrusion 15 is guided to the insertion groove 8a of the groove 8 when the columnar protrusion 7 of the single base lamp 4 is inserted into the recess 13, and further rotated when the single base lamp 4 is rotated in one direction. The protrusion 15 is guided to the groove 8b.

A holding portion receiving portion 16 that enters the lamp holding groove portion 2 a corresponding to the lamp holding portion 2 protrudes outwardly from the peripheral surface of the body 11 in a tongue shape. As a result, when the one-piece lamp 4 is inserted and rotated in one direction, the holding portion receiving portion 16 is fitted into the lamp holding groove portion 2a, and the lamp holding portion 2 is retained and locked in the direction opposite to the insertion direction. . A positioning receiving portion 17 is provided corresponding to the rotational positioning portion 3. The positioning receiving portion 17 includes a circumferential long groove 17a centered on the recess 13 and a protrusion 17b provided substantially at the center thereof. As a result, when the one-piece lamp 4 is inserted and rotated in one direction, the locking convex portion 3a of the rotational positioning portion 3 gets over the projection 17b by the elastic deformation spring 3c in the long groove 17a and engages in the direction opposite to the rotational direction. Removably positioning and locked. The restriction on the rotation direction of the single-cap lamp 4 at the rotation mounting completion position is such that the rear end portion of the lamp holding groove 2a of the lamp holding portion 2 is locked to the rear end portion of the holding portion receiving portion 16 in the lamp rotation direction. Alternatively, it is performed by the front end of the lamp holding unit 2 in the rotation direction being locked to the support unit 16a of the holding unit receiving unit 16. A lamp terminal 28 that fits in the body 11 is attached to the cover 12 at an attachment portion 29 of the cover 12, a quick connection terminal 25 is provided on the lamp terminal 28, and an electric wire inserted from an electric wire insertion hole 33 provided in the cover 12. Is connected to the quick connection terminal 25. With the cover 12 closing the lower surface opening of the body 11, the lamp terminal 28 is disposed inside the lamp pin insertion hole 14, and the lamp pin 9 inserted into the lamp pin insertion hole 14 can be sandwiched and contacted by the lamp terminal 28. .

The lamp support spring 31 is disposed in the vicinity of the rear end side in the lamp rotation direction of the pair of holding portion receiving portions 16 in a direction orthogonal to the arrangement direction of the lamp terminals 28 on the outer peripheral surface of the body 11. For example, the lamp support spring 31 is formed by bending a leaf spring into a substantially L-shape, and a step 32 is provided in the middle of the piece 19 so that the rotary positioning portion 3 is positioned on the positioning receiving portion 17, that is, the lamp mounting is completed. At the position, the rear end corner portion of the lamp holding portion 2 is pressed by the step portion 32 in an oblique direction including directions opposite to the lamp rotation direction and the insertion direction. As a result, a force that impedes rotation in the direction opposite to the rotation direction of the one- piece lamp 4 acts on the lamp holding portion 2 and prevents rattling between the lamp holding portion 2 and the holding portion receiving portion 16. The other piece 20 of the lamp support spring 31 is integrated with the connecting piece 18 and is bent and connected to the connecting piece 18 at a right angle at the side, and the one piece 19 extends along the upper end of the connecting piece 18. The connecting piece 18 is formed with fixing raised parts 21 and 22 which are raised and raised toward the opposite sides, that is, toward the center side of the connecting piece 18. The peripheral surface of the body 11 supports the other piece 20 and forms a projecting piece 34 that prevents the one piece 19 from separating outward from the peripheral surface of the body 11, and also forms a recess 35 that houses the connecting piece 18. A groove 36 into which both shoulder portions of the connecting piece 18 are inserted and a fixing portion 23 that locks the fixing cut-and-raised piece 21 are provided in the recess 35. Further, a slit 24 for inserting the lower end portion of the connecting piece 18 into the cover 12 is formed, and a fixing portion that is raised and raised in the slit 24 and hooked on the piece 22 is formed. Thus, the body 11 and the cover 12 are connected by the connecting piece 18 and the connecting piece 18 is attached to the single-piece lamp socket 1.

  On the other piece 20 side of the step portion 32 of the one piece 19 of the lamp support spring 31 is formed an inclined portion 30 for guiding the one-piece lamp 4 in the rotation direction when the one-piece lamp 4 is inserted.

  Reference numeral 40 denotes a socket mounting hole, and 41 denotes a spring stopper which is provided on the lower side of the holding portion receiving portion 16 of the body 11 so as to face the tip of the lamp support spring 31 and prevents plastic deformation of the lamp support spring 31.

The mounting of the single base lamp 4 will be described. FIG. 3 shows a state in which the one-piece lamp 4 is inserted into the one-piece lamp socket 1. At this time, if the watt identification is correct, the watt identification / protrusion 15 can slide in the groove 8, and the columnar protrusion 7 fits into the recess 13. The lamp pin 9 is inserted into the lamp pin insertion hole 14. In the vicinity of the insertion end, the lamp holding portion 2 abuts on the inclined portion 30 and the inclined portion 30 is elastically deformed, so that the lamp holding portion 2 receives a rotational force and a space for rotating the one-piece lamp 4 is obtained. At this time, the one-piece lamp 4 does not rotate because the protrusion 15 is restricted by the insertion groove 8a.

  FIG. 4 shows a state in which the lamp cap 4 is rotated from the inserted state and the lamp holder 2 is completely locked to the holder receiver 16. At this time, the lamp pin 9 is sandwiched between the lamp terminals 28 and brought into an electrical contact state, and the locking convex portion 3a of the rotational positioning portion 3 gets over and engages the projection 17b of the positioning receiving portion 17 by the elasticity of the elastic deformation spring 3c. Approximately, the position becomes the rotation completion position of the one-piece lamp 4, and the lamp holding portion 2 is locked to the holding portion receiving portion 16 and the rotation is restricted. At the same time, the lamp holding portion 2 is pushed over the step 32 and the rear end corner of the lamp holding portion 2 is pressed in the vicinity of the step 32 of the lamp support spring 31. In this manner, the lamp holding portion 2 is pressed obliquely by the lamp support spring 31 to prevent rotation in the direction opposite to the rotation direction, and the lamp holding portion 2 is pressed against the holding portion receiving portion 16, thereby stabilizing without rattling. Installation is possible. As a result, the lamp holding portion 2 is pressed by the lamp support spring 31 at the position where the one-piece lamp 4 is completely mounted, so that vibration and movement between the lamp pin 9 and the lamp terminal 28 can be prevented, and vibration is prevented. Contact reliability is improved even when used in an additional place.

When removing the mounting of the one-piece lamp 4, the reverse process is performed. That is, when the one-piece lamp 4 is rotated in the reverse direction, the lamp holding part 2 pushes the step part 32 of the lamp support spring 31 and elastically deforms the lamp support spring 31 to move over the step part 32 and move to the inclined part 30. Is disengaged from the lamp terminal 28, and the lamp rotation positioning part 3 gets over the positioning receiving part 17 to generate a click feeling. The inclined portion 30 is pushed by the rotational force in the removing direction so that the lamp holding portion 2 is detached from the holding portion receiving portion 16, and the projection 15 is positioned in the insertion groove 8a from the rotation groove 8b so that the one-piece lamp 4 is replaced with the one-piece lamp. It can be removed from the socket 1.

According to the present embodiment, the locking projection 3 a provided on the elastic deformation spring 3 c formed on the lamp base 5 and the single base for the prevention of detachment due to the rotation in the direction opposite to the rotation direction of the single base lamp 4. Since the lamp support spring 31 is provided in addition to the engagement with the projection 17b of the long groove 17a of the lamp socket 1, the lamp support spring 31 exerts a force that prevents the one-piece lamp 4 from rotating in the disengagement direction. The safety of lamp mounting can be improved. In addition, even if the locking convex portion 3a formed integrally with the elastic deformation spring 3c of the lamp base 5 is damaged in use, the lamp cap spring 31 can hold the single base lamp 4 so that it is safe.

  Moreover, since the lamp support spring 31 abuts against the lamp holding portion 2 to prevent it from coming off at the position where the one-piece lamp 4 is completely mounted, vibration and movement between the lamp pin 9 and the lamp terminal 28 can be prevented, and in a place where vibration is applied. Even in use, the contact reliability is improved because the contact between the lamp pin 9 and the lamp terminal 28 is not shifted.

With the structure in which the lamp support spring 31 is provided at a position substantially orthogonal to the direction in which the lamp terminals 28 contact the lamp pins 9 arranged in a straight line, rattling of the lamp support spring 31 of the one-piece lamp 4 in the opposite direction is performed. Is restricted by the holding portion receiving portion 16 of the one-piece lamp socket 1 being fitted into the lamp holding groove portion 2 a and holding the lamp holding portion 2 by the lamp support spring 31. That is, the lamp holding part 2 is pressed by the lamp support spring 31 in one direction, and the holding part receiving part 16 serves as a stopper for the lamp holding part 2 in the other direction. Further, rattling in a direction perpendicular to the above is unlikely to occur because the lamp terminals 28 sandwich the plurality of lamp pins 9.

In the present invention, the groove 8 is provided on the one-piece lamp 4 side and the projection 15 is provided on the one-piece lamp socket 1 side. In addition, the lamp holding groove 2a is provided on the one-piece lamp 4 side so that the holding-piece receiving part 16 on the one-piece lamp socket 1 side is fitted into the lamp holding groove 2a, but the lamp-holding groove 2a is provided on the one-piece lamp socket. It is possible to configure the holding portion receiving portion 16 provided on the one side and on the single cap lamp 4 side so as to fit into the lamp holding groove portion 2a . Although the locking convex portion 3a and the elastic deformation spring 3c of the rotation positioning portion 3 are provided on the one-piece lamp 4 side and the projection 17b is provided on the one-piece lamp socket 1 side, they may be reversed. Further, the means for connecting the body 11 and the cover 12 by the connecting piece 18 is not limited to the configuration of the above embodiment.

It is a perspective view of one embodiment of the present invention. It is a disassembled perspective view of a single cap lamp socket . (A) is a perspective view before mounting | wearing with a single cap lamp, (b) is a perspective view of the state which inserted the single cap lamp. It is a perspective view of the state which completed the mounting | wearing by rotating the single cap lamp. (A) is a top view of the one-piece lamp socket of a prior art example, (b) is the front view. (A) is a bottom view of the base of the single base lamp, and (b) is a partial side view thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Single-piece lamp socket 2 Lamp holding part 3 Rotating positioning part 4 Single-piece lamp 7 Columnar protrusion 8 Groove 8a Insertion groove 8b Rotation groove 9 Lamp pin 11 Body 12 Cover 13 Recess 14 Lamp pin insertion hole 15 Protrusion 16 Holding part receiving part 17 Positioning receiving portion 18 Connecting piece 28 Lamp terminal 30 Inclined portion 31 Lamp support spring 32 Step portion

Claims (3)

A bayonet coupling type single cap lamp socket for mounting a single cap lamp having a lamp holding portion for connection and a rotation positioning portion in combination and rotating in one direction, wherein the single cap lamp is combined and the A holding portion receiving portion that holds and holds the lamp holding portion in a direction opposite to the alignment direction when rotated in one direction, and the rotational positioning portion when the one-piece lamp is aligned and rotated in the one direction. A positioning receiving portion that is detachably locked in a direction opposite to the rotation direction, and a force that prevents rotation of the one-piece lamp in a direction opposite to the rotation direction while the rotation positioning portion is positioned on the positioning receiving portion. A single-piece lamp socket comprising a lamp support spring acting on the single-piece lamp . An approximately L-shaped groove comprising a groove for insertion and a groove for rotation to guide the one-piece lamp with respect to the one-piece lamp socket is formed in one of the one-piece lamp and the one -piece lamp socket , a protrusion that slides the groove when the phase combined and rotary gold lamp was formed on the other, meet single capped lamp socket is applied to a combination of single capped lamp and single capped lamp socket configurations to be fitted with each other The single-piece lamp socket according to claim 1, wherein the lamp support spring abuts against the lamp holding part and acts on the lamp holding part to prevent the single-piece lamp from rotating in a direction opposite to the rotation direction. A lighting fixture having the single-piece lamp socket according to claim 1.

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