JPH06181004A - Luminaire - Google Patents

Abstract

PURPOSE:To prevent deflection, looseness and breakage of a lamp caused by vibration or the like without deteriorating light distributing performance by supporting a lamp tip part supported with a socket and an extensible and contractible support mechanism having the same central axis with the socket. CONSTITUTION:A socket 2 is fixed to a peripheral side surface inside of a lighting fixture body 1, and a lamp 6 is held. On the other hand, an extensible and contractible support mechanism 3 such as a coil spring is installed on a peripheral side surface on the opposite side of the socket 2 by an installing metal fitting 5 through a heat resistant cushion 4 such as glass fiber braided tube so as to have the same central axis. Thereby, since the lamp 6 is supported at its opposite ends with the socket 2 and the mechanism 3, even if vibration or the like is applied from outside, deflection is restrained, and looseness is prevented. Since the mechanism 3 exists in a tip direction of the lamp 6, light distributing performance is not deteriorated, and since it can extend and contract, the lamp can be replaced easily while fixing the socket 2 as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire having a support mechanism for elastically supporting a tip portion of a lamp, and particularly to a luminaire intended for vibration resistance.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a support mechanism 25 (not shown) capable of elastically supporting the tip of the lamp 24 is installed on the bottom surface inside the lamp body 21 to hold the lamp 24. The socket holder 23 to which the socket 22 is fixed is inserted from the peripheral side surface of the lamp body 21, and the lamp 24
There is one in which the socket holder 23 is fixed to the peripheral side surface of the lamp body 21 after the front end of the lamp holder is supported by the support mechanism 25. However, according to the method of FIG. 5, each time the lamp is replaced, the lamp 24 and the socket holder 23 have to be taken out of the lamp body 21 and the lamp replacement work is troublesome.

Therefore, as an improvement measure for facilitating the lamp replacement work, "Japanese Patent Laid-Open No. 4-1237"
10 ”, the lamp is held in a socket 31 fixed to the peripheral side surface of the lamp body 30 as shown in FIGS. 6 and 7, and a mounting bracket 33 is attached to the bottom surface of the reflecting surface 38 inside the lamp body 30. It has been proposed that a support mechanism 32 capable of elastically supporting the tip portion of the lamp 37 having an oval mounting groove via the screw 36 is attached to the socket 31 so as to approach and separate from the socket 31.

Due to the light distribution characteristic of the lamp, the luminous flux in the peripheral side surface is predominantly larger than that in the tip direction of the lamp, and the reflection surface of the lighting fixture controls the luminous flux in the peripheral lateral direction. But its performance is greatly affected. However, as shown in FIG.
According to the method of "3710", it is necessary to provide the support mechanism 32 on the bottom surface of the reflecting surface 38 in the direction of the peripheral side surface of the lamp 37 so that the supporting mechanism 32 can be moved toward and away from each other as described above.
It is difficult to bring out the performance of No. 8 effectively.

Further, in the support mechanism of FIG. 7, many components such as a spring 34 and a pin 35 for attaching the spring 34 are provided on the support mechanism 32 in order to effectively exert the performance of elastically supporting the tip portion of the lamp. In addition, the lamp cannot be replaced unless the support mechanism is attached to and detached from the socket 31, which tends to increase the cost.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a lamp holding socket is provided on one of the peripheral side surfaces inside a lighting fixture body, and the socket and the center are provided on the peripheral side surface opposite to the peripheral side surface. It is characterized in that it is provided with an extendable and retractable lamp support mechanism attached so that the shafts are aligned, or a lamp support mechanism capable of approaching and separating from the socket.

[0007]

[Function] Since the tip of the lamp held by the socket is elastically supported by the support mechanism to be in a double-supported state, the lamp shakes or loosens due to external vibration,
It is possible to prevent damage and extreme changes in light distribution characteristics. Further, since the support mechanism is expandable and contractible, it is possible to easily replace the lamp with the socket fixed even when replacing the lamp.

Further, since the expandable / contractible support mechanism of the present invention is used as it is by utilizing the expansion / contraction action of the parts, the support mechanism can be constructed without using many additional parts, which is inexpensive. It is possible to provide a flexible support mechanism.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 shows an embodiment of the invention described in "Claim 1".
FIG. 4 is a diagram showing an embodiment of the invention described in “claim 3”.
FIG. 3 is a perspective view of the support mechanism portion of the present invention, and FIG. 4 is a perspective view of the moving mechanism portion of the present invention.

As shown in FIG. 1, the socket 2 is fixed to the peripheral side surface inside the lamp body 1 to hold the lamp 6. Further, a reflector plate 13 is fixed inside the lamp body 1 so as to surround the lamp 6 (note that the lamp body 1 and the reflector plate 13 can be integrated with the inner surface of the lamp body 1 as a reflecting surface. Of course). A lamp cover 15 to which a glass plate 14 is fixed is attached to the opening side of the lamp body 1.

On the other hand, on the peripheral side surface opposite to the side where the socket 2 is fixed, a glass fiber braided tube, a heat resistant silicone tube, or the like is formed at the end portion on the side that contacts the lamp 6 as shown in FIG. A cylindrical coil spring 3 to which a cushion 4 having heat resistance is attached is attached by a mounting member 5 so that the socket 2 and the central axis are aligned. In such a configuration, the lamp 6 is held by the socket 2 and, at the same time, is pressed against the socket side by the expansion and contraction action of the coil spring 3, so that the lamp 6 is supported in a double-supported state. Therefore, the lamp 6 is
Even if a runout occurs, the runout of the coil spring 3 suppresses the runout. Similarly, even if the lamp 6 starts to loosen due to vibration, the expansion and contraction action works in the direction of the loosening prevention, so that further loosening of the lamp 6 can be prevented.

Due to such an action, the vibration of the lamp 6,
The lamp 6 can be prevented from loosening due to external vibrations, etc.
It is possible to prevent the runout, looseness and damage of the. Further, the support mechanism is not so important for the light distribution characteristics of the lamp 6.
Since it is mounted in the direction of the tip of the lamp, it is possible to prevent an extreme variation in the light distribution characteristic without impairing the original light distribution performance of the lighting fixture. To replace the lamp 6, remove the lamp cover 15 from the lamp body 1 and then
When the coil spring 3 overcomes the action of the coil spring 3 and is loosened, the coil spring 3 acts so as to contract, so that the lamp 6 can be removed with the socket 2 fixed. This can be easily performed by compressing the coil spring 3 by inserting it while pressing it against the cushion 4 and then attaching the lamp 6 to the socket 2 after the coil spring 3 is sufficiently contracted.

Further, as shown in FIG. 2, a base 7 as shown in FIG. 4 is attached to the peripheral side surface on the side opposite to the side where the socket 2 is fixed, and the movable mount is slidable inside. 8, the lock pin 9 and the screw 10 are attached, and further, the base 7 and the movable mount 8 are attracted to each other by the spring 12 therein, the movable mount 8 loosens the screw 10, and the lock pin 9 is L-shaped. When the lock is released by rotating the guide groove 11 along the guide groove 11, it is housed inside the base 7 along the guide groove 11 by the action of the spring 12 and has a function as a moving mechanism.
If a cushion with heat resistance is attached to the tip of this moving mechanism, it becomes a moving lamp supporting mechanism itself,
If the above-mentioned lamp support mechanism is mounted on this moving mechanism, the lamp replacement work becomes easier.

In this embodiment, since the supporting mechanism is used as it is by utilizing the expansion and contraction action of the coil spring 3, the components are the coil spring 3, the cushion 4 attached to the tip end thereof, and the coil spring 3 inside the lamp body 1. It is possible to provide an inexpensive support mechanism because it is only the mounting bracket 5 for mounting on the side surface.

In this embodiment, the coil spring is used as the expandable / contractible support mechanism, but it is also possible to use a cylindrical resin or rubber having heat resistance and elasticity.

[0016]

As described above, according to the present invention, the tip end of the lamp is supported by the support mechanism to be in a double-supported state, and it is possible to prevent the lamp from swinging, loosening, or damaged due to external vibration. . Further, since the support mechanism is attached in the direction of the tip of the lamp, which is not so important in terms of light distribution characteristics, it is possible to prevent extreme fluctuations in light distribution characteristics without impairing the original light distribution performance of the lighting fixture. Further, since the support mechanism is expandable and contractible, it is possible to easily replace the lamp with the socket fixed even when replacing the lamp.
In addition, since the supporting mechanism is used as it is by utilizing the expanding and contracting action of the elastic component, the supporting mechanism can be configured without using many additional components, so that an inexpensive supporting mechanism can be provided.

When used in combination with the moving mechanism, the support mechanism can be moved in the direction away from the socket, so that the lamp can be replaced more easily.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an embodiment of the invention described in claim 1.

FIG. 2 is a sectional view showing an example of an embodiment of the invention according to claim 3;

FIG. 3 is a perspective view showing an example of a support mechanism section of the present invention.

FIG. 4 is a perspective view showing an example of a moving mechanism section of the present invention.

FIG. 5 is a front view showing a conventional example.

FIG. 6 is a sectional view of a conventional example.

FIG. 7 is a perspective view of a conventional example.

[Explanation of symbols]

 1 Lamp body 2 Socket 3 Coil spring 4 Cushion 5 Mounting bracket 6 Lamp 7 Base 8 Movable mount 9 Lock pin 10 Screw 11 Guide groove 12 Spring 13 Reflector 14 Glass plate 15 Lamp cover

Claims (4)

[Claims] 1. A lamp-holding socket is provided on one of the peripheral side surfaces inside the lamp body, and the socket is attached to the peripheral side surface opposite to the peripheral side surface so that the central axis of the socket coincides with that of the socket. A luminaire characterized by having a retractable lamp support mechanism. 2. A lamp support mechanism provided with a socket for holding a lamp on one of the peripheral side surfaces inside the lamp body, and a peripheral side surface opposite to the peripheral side surface is capable of approaching and separating from the socket. Is attached so that the central axis is aligned with the socket. 3. A lamp holding socket is provided on one of the peripheral side surfaces inside the lamp body, and a moving mechanism section capable of approaching and separating from the socket is provided on the peripheral side surface opposite to the peripheral side surface. Is attached so that the central axis thereof is aligned with the socket, and an extensible lamp supporting mechanism is attached to the tip of the moving mechanism section. 4. The lighting device according to claim 1, wherein a coil spring is used as the extendable and contractible support mechanism.