JPH064485Y2 - Lamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a bulb-replaceable lamp in which a bulb is exchanged at a rear portion of a lamp, and more specifically, a bulb in which a bulb is detachably attached to a bulb holder by a spring force of a spring. It is about.

[Prior Art] A conventional lamp of this type will be described with reference to FIGS. 5 and 6.

This example describes a vehicle lamp. In the figure,
Reference numeral 1 denotes a reflector as a lamp body having a reflecting surface 10 in the shape of, for example, a paraboloid of revolution on the front side, and a through hole 11 is provided in the center of the reflector 1, and two reflectors are provided on the outer surface side of the peripheral portion of the through hole 11. The mounting projection 12 is integrally projected rearward. This reflector 1
A lens (not shown) is disposed in front of the.

Reference numeral 2 denotes a valve holder. The valve holder 2 is provided with a cylindrical recess 20 in the center thereof, and mounting pieces 22 are integrally projected outward from both sides of the flange 21 at the opening edge of the recess 20. A support portion 23 having an L-shaped cross section is provided on one attachment piece portion 22 of the valve holder 2, and a locking portion 24 is provided on the other attachment piece portion 22 of the valve holder 2. Reference numeral 25 is a die hole for molding the above-mentioned support portion 23. A through hole 26 is provided at the center of the bottom of the convex portion 20 of the valve holder 2, and a small protrusion 27 is provided at the periphery of the through hole 26 of the concave portion 20.

3 is a spring formed by bending a steel rod. This spring 3 is formed by connecting the middle portion of the steel rod member. To form a supported portion 30 at one end, and both side portions of the supported portion 30 are bent in a V shape to press the middle pressing portion 31.
Is formed, and one of the two pressing portions 31 has a tip L
It is bent in a letter shape to form a locked portion 32 at the other end.

The supported portion 30 of the spring 3 is attached to the valve holder 2
Is rotatably supported by the support portion 23 of the valve holder 2, and in that state, the recess 20 of the valve holder 2 is inserted into the through hole 11 of the reflector 1, and the mounting piece 22 of the valve holder 2 is mounted on the reflector 1. The valve holder 2 is fixed to the reflector 1 by attaching it to the protrusion 12 with a bolt 28. At this time, one bolt
Since the head of the bolt 28 faces the opening of the support portion 23 of the valve holder 2, the head of the bolt 28 serves to prevent the spring 3 from coming off. As a result, the supported portion 31 of the spring 3 is
Since the periphery is surrounded by the support portion 23 of the valve holder 2, the peripheral portion of the die hole 25, and the head of the bolt 28, the spring 3 is supported rotatably in the arrow direction in the drawing.

Reference numeral 4 denotes a valve, which is a glass tube bulb 40 enclosing a filament (not shown), a base 41 provided from the rear portion of the glass tube 40, and a collar portion 42 provided at an intermediate portion of the base 41. And a terminal 43 protruding rearward from the rear end of the base 41. The glass tube 40 of the bulb 4 is inserted into the reflector 1 through the through hole 26 of the bulb holder 2, and the front side of the flange 42 of the bulb 4 is brought into contact with the small protrusion 27 of the bulb holder 2. Next, while the pressing portion 31 of the spring 3 is pressed against the rear surface of the collar portion 42 of the valve 4, the locked portion of the spring 3
32 is locked to the locking portion 24 of the valve holder 2. As a result, the valve 4 is detachably attached to the valve holder 2, that is, replaceable.

When replacing the valve 4, first, the locked portion 32 of the spring 3 is disengaged from the locking portion 24 of the valve holder 2, and the spring 3 is rotated counterclockwise as indicated by an arrow in the drawing to press the pressing portion 31 of the spring 3. Is removed from the collar portion 42 of the valve 4, and the valve 4 is pulled out from the valve holder 2. Next, insert a new valve 4 into the valve holder 2 and lock the locked portion of the spring 3.
32 is locked to the locking portion 24 of the valve holder 2, and the valve 4 is detachably attached to the valve holder 2 by the pressing portion 31 of the spring 3.

[Problems to be Solved by the Invention] However, in the above-described conventional lamp, as a means for preventing the spring 3 from coming off, that is, as a means for preventing the supported portion 30 of the spring 3 from coming off the supporting portion 23 of the bulb holder 2, Since the head portion of the bolt 28 for fixing 2 to the reflector 1 is used, as shown in FIG. 6, a gap is formed on both sides of the contact point between the head portion of the circular bolt 28 and the opening side edge of the rectangular support portion 23. 5 is open. For this reason, the spring 3 can be rotated in the left and right directions with the supported portion 30 as a fulcrum in a direction other than the attaching / detaching direction shown by the arrow in FIG. 5, that is, on the paper surface of FIG. Therefore, when the valve 4 is replaced, the spring 3 may rotate left and right in a direction other than the proper attachment / detachment direction, and the supported portion 30 of the spring 3 may enter the gap 5 on both sides of the head portion of the bolt 28 and the supporting portion 23. . Then, the spring 3 cannot rotate in the proper locking and detaching direction, and the valve 4
The replacement work may not be possible. For this reason, it is necessary to rotate the spring 3 in the regular locking and detaching direction so as not to rotate the spring 3 to the left and right, and when the supported portion 30 of the spring 3 enters the gap 5, the spring 3 is returned to its original position. It is necessary to restore the state, and the replacement work of the valve 4 is troublesome.

Particularly, in the case of the automotive lamp as in this example, since the portion of the lamp for replacing the bulb at the rear cannot be seen, the bulb 4 must be replaced by a blind work, and the supported portion of the spring 3 described above must be performed. There is a high risk that 30 will enter the gap 5. Also, if the user does not understand the structure of the lamp,
It is difficult to return the spring 3 in which the supported portion 30 has entered the gap 5 to the original state, and in extreme cases, it may be impossible for the user to replace the valve 4.

Therefore, various lamps have been devised which are configured to regulate the movement of the spring in a direction other than the direction of engaging and disengaging the spring.

Examples of this type of lamp include, for example, Jitsuko Sho 58-4313.
No. 0, No. 62-165601, No. 6
There is one described in Japanese Patent Publication No. 2-31306.

The first is that the socket fixture (20) is provided with a stepped fork-shaped holding portion (27), and the holding portion (2
The base portion (37) of the spring (8) is set in (7), and the socket fixture (20) in which the spring (8) is set is fixed to the burring (3) of the reflector (1). 20) holding part (2
7) and the burring (3) of the reflector (1) hold the spring (8) so as to restrict the movement in a direction other than the locking and mounting direction.

Further, the second one is an engaging portion 2 which is formed by a concave groove (2a), a boss portion (2b) and a locking projection (2c) in the reflecting mirror (A).
The engaging portion (B ₁ ) of the set spring (B) is set in the groove (2a) of the engaging portion (2), and the screw (4) is attached to the boss portion (2b) of the engaging portion 2. ) The washer member (4
screw it in through b) to insert the groove (2) of the engaging part (2).
The set spring (B) is held by a) and the washer member (4b) so as to restrict the movement in a direction other than the locking and mounting direction.

Further, in the third type, a rotary pedestal (10d) is provided on the reflector (1), a groove (10d ') is provided on the upper surface of the rotary pedestal (10d), and a groove (10d) is formed on the rotary pedestal (10d). 1
0d '), the rotation shaft portion (4) of the valve holding spring (4)
a) is set, and a screw screw 5 is screwed into the rotating material (10d), and the groove (10) of the rotating pedestal (10d) is set.
The valve holding spring (4) is held by d ') and a screw screw (5) so as to restrict the movement in a direction other than the locking and mounting direction.

The present invention relates to an improvement of the above-mentioned lamp. An object of the present invention is to provide a lamp which can simultaneously perform the action of restricting the movement of the spring and the action of preventing erroneous assembly of the bulb holder with one mechanism.

[Means for Solving the Problems] The device according to claim 1 (hereinafter referred to as the first device)
Is provided in the bulb holder with an insertion hole for preventing incorrect assembly of the bulb holder, and a support portion for supporting the supported portion of the spring is provided at the edge of the insertion hole. A wall for preventing erroneous assembly of the valve holder and for restricting the movement of the spring in a direction other than the locking / removing direction by the cooperation of the support portion of the valve holder and the edge of the insertion hole. Is characterized by.

Further, according to a second aspect of the present invention (hereinafter, referred to as a second aspect), a valve holder is provided with an insertion hole for preventing incorrect assembly of the valve holder, and a supported portion of the spring is provided at an edge of the insertion hole. And a wall for inserting the lamp body into the insertion hole to prevent erroneous assembly of the bulb holder, and the wall cooperates with the support portion of the bulb holder to support the spring. It is characterized in that a notch portion for restricting movement in a direction other than the locking and detaching direction is provided.

[Operation] In the first invention, the movement of the spring in a direction other than the locking / unlocking direction can be restricted by the support portion of the bulb holder, the edge of the insertion hole of the bulb holder, and the wall of the lamp body.

Further, according to the second invention, the movement of the spring in a direction other than the engaging / disengaging direction can be restricted by the support portion of the bulb holder and the notch portion of the wall of the lamp body.

Further, in the first device and the second device, it is possible to prevent the bulb holder from being erroneously assembled by inserting the wall of the lamp body into the insertion hole of the bulb holder.

[Examples] Two examples of the examples of the lamp according to the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a sectional view showing an embodiment of the lamp according to the first invention, and FIG. 2 is a bottom view of the same. This example describes a vehicle light. In the figure, the same reference numerals as those in FIGS. 5 and 6 indicate the same elements.

In the lamp according to the present invention in this embodiment, the die hole 25 of the bulb holder 2 is used as an insertion hole for preventing the bulb holder 2 from being erroneously assembled. A support portion 23 having a substantially L-shaped cross section is provided at the edge of the insertion hole 25.

On the other hand, at the edge of the through hole 11 of the reflector 1 as the lamp body, a restricting wall 6 for preventing incorrect assembly of the bulb holder 2 is integrally projected rearward at a portion inside the mounting projection 12. The regulation wall 6 is parallel to the support portion 23 of the valve holder 2, and is inserted into the through hole 25 of the mold of the valve holder 2 to face the opening edge of the support portion 23. As a result, the supported portion 30 of the spring 3 is the support portion 23 and the regulating wall 6 of the valve holder 2 which are parallel to each other, and the edge of the mold insertion hole 25 of the valve holder 2 on both sides of the support portion 23. It is surrounded by the edge 29. Therefore, the spring 3 is restricted from rotating in the left-right direction on the paper surface of FIG. 2, and is supported so as to be rotatable only in the regular locking and detaching direction shown by the arrow in FIG.

The lamp according to the present invention in this embodiment has the above-described structure, that is, the supported portion 30 of the spring 3 is supported by the parallel supporting portion 23, the regulating wall 6, and the edge 29 of the insertion hole 25 of the bulb holder 2. So spring 3
Since the rotation of the valve 3 in the left-right direction is restricted, the supported portion 30 of the spring 3 does not enter the gap and the valve 4 cannot be replaced. Therefore, the spring 3 may be rotated in the locking / unlocking direction so as not to rotate left / right,
Further, since it is not necessary to return the spring 3 in which the supported portion 30 has entered the gap to the original state, the replacement work of the valve 4 can be easily performed.

Particularly, in the lamp according to the present invention in this embodiment, the bulb holder 2 is provided with the insertion hole 25 for preventing the erroneous assembly of the bulb holder 2, while the reflector 1 is provided with the restriction wall 6 for preventing the erroneous assembly of the bulb holder 2. Therefore, by inserting the restriction wall 6 into the insertion hole 25, it is possible to prevent the valve holder 2 from being erroneously assembled. In particular, as shown in the drawing, when the reflector 1 and the valve holder 2 and the mounting position of the valve holder 2 to the reflector 1 (the screwing position of the bolt 28) are bilaterally symmetric, the valve holder 2 is surely prevented from being erroneously assembled. be able to.

FIG. 3 is a sectional view showing an embodiment of the lamp according to the second invention, and FIG. 4 is a bottom view of the same. This example describes a vehicle lamp. Figure 1, Figure 2, Figure 5,
The same reference numerals as those in FIG. 6 and FIG. 6 indicate the same parts.

In the lamp of the present invention in this embodiment, the bulb holder 2 is provided with an insertion hole 25 for preventing the bulb holder 2 from being erroneously assembled, and a support portion 23 having an L-shaped cross section is provided at the edge of the insertion hole 25. On the other hand, a regulating wall 60 for preventing the erroneous assembly of the valve holder 2 is provided at the edge of the through hole 11 of the reflector 1. The thickness of the regulation wall 60 is slightly smaller than the width of the insertion hole 25,
Further, the height is such that it projects from the mounting piece 22 of the valve holder 2. A notch 61 is formed by notching a corner of the lower end of the restriction wall 60 on the side facing the support 23. The notched portion 61 of the restriction wall 60 and the support portion 23 of the valve holder 2 support the supported portion 30 of the spring 3 from the direction of the cross section 4. This embodiment can achieve the same effects as those of the above embodiment.

In particular, in this embodiment, the valve holder 2 is provided with an insertion hole 25 for preventing the valve holder 2 from being erroneously assembled.
On the other hand, since the reflector 1 is provided with the restriction wall 60 for preventing the erroneous assembly of the valve holder 2, the restriction wall 60 is inserted into the insertion hole 2
By inserting the valve holder 2 in 5, it is possible to prevent erroneous assembly of the valve holder 2.

In the above-described embodiment, the restriction walls 6 and 60 are provided so as to project from the reflector 1 of the lamp body, but they are formed separately from the reflector 1 and simultaneously when the bulb holder 2 is fixed to the reflector 1. It may be configured to be fixed.

Further, in the above-described embodiment, the reflector 1 was described as the lamp body, but a lamp housing that defines a lamp chamber together with a lens, and the reflector is disposed in the lamp chamber may be used.

Furthermore, although the above-described embodiment has been described with reference to a vehicle lamp, the present invention can be applied to other lamps.

[Effects of the Invention] As is clear from the above, the lighting device of the present invention is provided with a through hole for preventing mis-assembly of the bulb holder provided in the bulb holder and a restriction wall for preventing mis-assembly of the bulb holder provided on the reflector. It is possible to simultaneously perform the action of restricting the movement of the spring and the action of preventing erroneous assembly of the valve holder by one mechanism including

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the lamp according to the first invention, and FIG. 2 is a bottom view of the same. FIG. 3 is a sectional view showing an embodiment of the lamp according to the second invention, and FIG. 4 is a bottom view of the same. FIG. 5 is a sectional view showing a conventional lamp, and FIG. 6 is a bottom view of the same. 1 ... Reflector (lamp body), 2 ... Bulb holder, 23 ...
Support part, 24 ... Locking part, 3 ... Spring, 30 ... Supported part,
31 ... Pressing part, 32 ... Locked part, 4 ... Valve, 6,60 ... Regulating wall.

Claims (2)

[Scope of utility model registration request] 1. A bulb holder fixed to a lamp body, a spring supporting a supported portion at one end of the bulb holder, and a bulb, wherein a locked portion at the other end of the spring is provided in the bulb holder. In a lamp in which the bulb is detachably locked to the valve holder and the bulb is detachably attached to the bulb holder by the pressing portion in the middle of the spring, the bulb holder is provided with an insertion hole for preventing incorrect assembly of the bulb holder and the insertion hole. A support portion for supporting the supported portion of the spring is provided at an edge of the bulb holder, the lamp body is inserted into the insertion hole to prevent erroneous assembly of the bulb holder, and the support portion of the bulb holder and the insertion hole. The lamp is provided with a wall for restricting movement of the spring in a direction other than the locking / unlocking direction in cooperation with the edge of the lamp. 2. A bulb holder fixed to a lamp body, a spring supporting a supported portion at one end of the bulb holder, and a bulb, wherein a locked portion at the other end of the spring is provided at the bulb holder. In a lamp in which the bulb is detachably locked to the valve holder and the bulb is detachably attached to the bulb holder by the pressing portion in the middle of the spring, the bulb holder is provided with an insertion hole for preventing incorrect assembly of the bulb holder and the insertion hole. A support portion for supporting the supported portion of the spring is provided on the edge of the lamp body, and a wall for preventing the bulb holder from being erroneously assembled by being inserted into the insertion hole in the lamp body, and the wall for supporting the bulb holder. A lamp is provided with a cutout portion that regulates a movement of the spring in a direction other than a locking / removing direction by a joint action with the portion.