JPS5841690Y2 - lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a lighting device in which a support arm is provided with a lamp, and the lamp is configured to be movable and adjustable in the longitudinal direction of the support arm.

Conventionally, this type of lighting equipment has a lighting equipment 20 as shown in FIG.
A pipe-shaped support arm 21 and a sliding pipe 22 slidably inserted through the inner circumference of the support arm 21 are fitted into the lamp 2.
0 is slidably supported on the outer periphery of the support arm 21, and the other end is supported on the end of the sliding pipe 22 led out from the support arm 21, so that the lamp 20 can be moved in the longitudinal direction of the support arm 21. The movement can be adjusted by sliding in the directions of arrows A and B.

A hollow stopper 23 on which the sliding pipe 22 can freely slide is attached to one end of the support arm 21 fitted into the lamp 20, and a part (a) of the lamp is attached to the hollow stopper 23.
and b), thereby regulating the movement range of this lamp 20.

However, in this way, a part of the lamp 20 is attached to the hollow stopper 23.
In the structure in which the light fixture 20 is brought into contact with the light fixture 20, if the light fixture 20 is strongly slid, an impactful force is applied to the light fixture 20, which may cause deformation or damage.

Therefore, this invention was made in view of the above circumstances, and its purpose is to provide a lighting fixture that can reliably prevent deformation and damage of the fixture due to sliding operation of the fixture. .

An embodiment of this invention will be described below with reference to the drawings.

In Fig. 2, reference numeral 1 denotes a chassis having a U-shaped cross section and a predetermined length, and a lamp support plate 2 at both ends thereof.
2 are fixed facing each other.

A pair of lamp side plates 3, 3 having a U-shaped longitudinal section are fitted into the lamp support plates 2, 2, and furthermore, the lamp support plates 2,
The upper end of 2 is bent at right angles to the side of the lamp side plates 3, 3 to form bent parts 4, 4 which support the inner upper surfaces of the lamp side plates 3, 3, and the lower end thereof is provided with a fluorescent light. Sockets 6.6 holding the electrodes at both ends of the lamp 5 are mounted facing each other.

Then, screws 7, 7 are screwed into the upper surfaces of the lamp side plates 3, 3 toward the bent portions 4, 4, and the lamp side plates 3, 3 are fixed to the lamp support plates 2, 2 by these screws 7, 7. ing.

Furthermore, a fluorescent lamp 5 is mounted between sockets 6 and 6 which are mounted opposite to each other on the lamp support plates 2 and 2.

These constitute the lamp 8.

A support arm 1 formed in a pipe shape on this lamp 8
0 is slidably inserted through one of the lamp side plates 3 and one of the lamp support plates 2.

A sliding pipe 11 is provided on the inner periphery of one end of this support arm 10.
is loosely inserted therein, and a hollow stopper 12 is attached to the opening at one end of the support arm 10, and the one end side of the sliding pipe 11 is led out from the support arm 10 by slidingly passing through the hollow stopper 12. ing.

Furthermore, a protrusion 13 that protrudes from the inner peripheral surface is continuously formed in the circumferential direction midway through the inner surface of the support arm 10.

Further, a cylindrical stopper portion, for example, a stopper 14 is fixed in the middle of the sliding pipe 11, and the outer circumferential surface of the stopper 14 slides on the inner circumferential surface of the support arm 10.

Further, the end of the sliding pipe 11 led out from one end of the support arm 10 passes through the lamp support plate 2 and is connected to an L-shaped support plate 15 attached to the lamp support plate 2 via a screw 16. Fixed.

These support the lamp 8 so as to be able to slide in the directions of arrows A and B along the longitudinal direction of the support arm 10, and as the lamp 8 slides, the stopper 14 comes into contact with the protrusion 13 and the hollow stopper 12. .

The other end of the support arm 10 extends relatively long and is connected to a desk or the like.

According to this configuration, the lamp 8 sliding in the direction of the arrow A and the direction of the arrow B is stopped by the contact between the stopper 14, the protrusion 13, and the hollow stopper 12, thereby regulating its sliding range. Since the hollow stopper 12 does not come into contact with the lamp support plates 2, 2, damage or deformation of the lamp support plates 2, 2 can be reliably prevented.

Note that this invention is not limited to the embodiments described above.

For example, in the embodiment described above, the member of the stopper 14 is made of an elastic material, so that even if the lamp 8 is strongly slid, the impact caused by the contact between the stopper 14, the protrusion 13, and the hollow stopper 12 is absorbed by the elasticity of the stopper 14. Since it is absorbed by the hollow stopper 12, damage and deformation of the hollow stopper 12 can also be prevented.

Further, as shown in FIG. 3, a molded pipe 24 as a stopper portion formed of an elastic member is fitted into one end of the sliding pipe 11 that is loosely inserted into the support arm 10, and the fitted end is The molded pipe 24 is attached to the sliding pipe 11 by wrapping it around the inner peripheral surface of the end of the sliding pipe 11, and the sliding of the lamp 8 in the directions of the arrows A and B is controlled by the molded pipe 24.
The molded pipe 24 may be stopped due to its own elasticity even if the lamp 8 is strongly slid. Since it absorbs the impact caused by the contact between the ends of the formed pipe 24 and the hollow stopper 12 and the protrusion 13, it is possible to prevent the offshore stopper 12 from being damaged or deformed.
In addition, since there is no contact with the lamp support plates 2, 2, damage or deformation of the lamp support plates 2, 2 can be reliably prevented.

Furthermore, even if the lamp 8 is slid to the maximum in direction B, the length from the contact position of the hollow stopper 12 to the end of the formed pipe 24 can be obtained at relatively long intervals, so that the inclination of the lamp 8 can be prevented. It can be prevented.

In FIG. 3, the same components as those in the embodiment described above are given the same numbers and the explanation thereof will be omitted.

As explained above, according to this invention, although a stopper part is provided on the sliding pipe that slides on the support arm, damage and deformation of the lamp itself, which conventionally occurs when stopping the sliding operation of the lamp, can be prevented. This has the practical effect of being able to prevent this.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional lighting fixture, FIG. 2 is a sectional view showing one embodiment of this invention, and FIG. 3 is a sectional view showing another embodiment of this invention having a different stopper portion. 8... Lamp, 10... Support arm, 1
1... Sliding pipe, 14... Stopper part, 24... Molded pipe (stopper part).

Claims (2)

[Scope of utility model registration request] (1) A light fixture is slidably provided on the outer periphery of one end of a pipe-shaped support arm, and this light fixture is supported by one end of a sliding pipe that is slidably inserted into the inner periphery of one end of the support arm. , a lighting device in which the lamp is movable and adjustable in the longitudinal direction of the support arm, wherein a hollow stopper is provided at one end opening of the support arm, and a protrusion that protrudes inwardly is formed in the middle of the support arm;
A stopper portion is provided on the sliding pipe located between the hollow stopper protrusion and the stopper portion contacts the hollow stopper and the protrusion to restrict the sliding range of the sliding pipe with respect to the support arm. A lighting device characterized by: (2) The lighting device according to claim 1, wherein the stopper portion is made of an elastic material.