JPH04112407A - Elevating and sinking illuminating device - Google Patents

Abstract

PURPOSE:To stop a lighting fixture falling, which is supported on a frame, in the event of rope severance by furnishing a brake unit wherein an eccentric cam is arranged on a pulling element. CONSTITUTION:On the outer wall of a taper pole 11 a frame 12 fitted with a lighting fixture 13 is supported by a rope 14 in such a way as capable of rising and sinking. A brake unit 16 in contact with the outer wall surface of this taper pole 11 is mounted on the frame 12. The brake unit is equipped with a pulling element 18 rotated by a spring, and an eccentric cam 19 is mounted on this pulling element. In the event of severance of the rope 14, this eccentric cam 19 is pulled by a spring 21, and part of the cam 19 contacts part of a brake plate 20, causing fixation in the position with brake unit 16. As the outer wall of the pole is tapered, the lighting fixture sinks a little in the event of rope 14 severance, but is stopped by the outer wall of pole.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in lifting lighting devices.

[Conventional technology]

BACKGROUND ART Lifting lighting devices are often used for lighting devices in station plazas, expressway interchanges, park plazas, etc. for purposes such as lamp replacement and maintenance and inspection of lighting devices.

In a conventional structure, for example, as shown in FIG. 4, a rail 2 is formed on the outer wall of a hollow taper pole 1, and a lighting fixture is fixed to the outer wall of the taper pole 1 with a cable 3 to a frame 4. The lighting fixture 5 is lifted and lowered along the rail 2 on the outer wall of the tapered pole 1 by suspending and supporting the lighting fixture 5 and winding and unwinding the filament 3.

However, according to the vertical lighting device having the same structure, the rail 2 is exposed on the outer wall of the tapered pole 1, spoiling the aesthetic appearance.

Therefore, conventionally, as shown in FIG.
It is a hanging configuration.

Further, in order to facilitate the lifting and lowering of the lighting fixture 5, a balance weight 6 is supported by a cable 3 inside the taper pole 1.

(Problems to be Solved by the Invention) By the way, according to the vertical lighting device having the structure shown in FIG.
If the cable 3 were to break, there is a risk that the lighting fixture would fall together with the pedestal.

(Object of the Invention) The present invention was invented in view of the above-mentioned points, and has an object to increase safety by eliminating the risk of the lighting equipment falling together with the pedestal even if the cable is severed. The purpose of the present invention is to provide an elevating lighting device that allows for

(!!Means for solving problem 1) In order to solve the above problem, the present invention has the following configuration. In other words, the pedestal having the lighting equipment is supported on the outer wall of the tapered ball by cables so as to be movable up and down.

Further, a brake unit that contacts the outer wall surface of the tapered ball is provided on the mount.

In addition, the brake unit is provided with a tension body that rotates using a spring, and an eccentric cam is provided on the tension body, and by rotating the eccentric cam, a part of the brake plate is pressed against the brake plate, and the cable of the lighting equipment is cut. Stop falling due to.

(Function) According to the elevating lighting device having the above structure, even if the cable were to break, part of the eccentric cam would be pressed against a part of the brake plate, and the pedestal supporting the lighting equipment would fall. You can stop doing that.

(Example) The present invention will be explained below with reference to FIGS. 1 to 3. In the figure, numeral 11 is a hollow tapered ball made of aluminum, for example.

Numeral 12 is a pedestal that is movable up and down along the outer wall of the tapered ball 11, 13 is a lighting fixture supported by the pedestal 12, and 14 is a cable from which the pedestal 12 is suspended. It is composed.

Reference numeral 15 indicates a pulley disposed on the top of the tapered ball 11, and the same number of pulleys as the cables 14 are provided. 16
is a brake unit disposed inside the frame 14, and is composed of a roller 17, a tension body 18, and an eccentric cam 19. The roller 17 is configured to contact the outer wall of the tapered ball 11, and the eccentric cam The cam 19 is configured to rotate relative to the tension body 18.

20 is a brake plate disposed corresponding to the eccentric cam 19, and 21 is a brake plate arranged to correspond to the eccentric cam 19;
It is a spring that pulls.

According to the lifting lighting device having the same structure, if the cable 14 were to break, the eccentric cam 19 would be pulled by the spring 21, and a part of the eccentric cam 19 would come into contact with a part of the brake plate 20 and brake the brake plate 20. The position of unit 16 is fixed. Since the outer wall of the pole has a tapered structure, if the cable 14 were to break, the lighting fixture would descend slightly, but would be stopped by the outer wall of the ball.

(Effects of the Invention) As described above, the present invention includes a brake unit that comes into contact with the outer wall surface of the tapered ball, a tension body that is rotated by a spring in the brake unit, and an eccentric cam arranged on the tension body. However, since a part of the eccentric cam is configured to be in pressure contact with the brake plate, even if the cable should break, it is possible to prevent the lighting fixture supported on the pedestal from falling.

Safety has a unique effect of increasing.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an elevating lighting device according to the present invention;
FIGS. 2 and 3 are partially enlarged sectional views of FIG. 1, and FIGS. 4 and 5 are partially cutaway side views of a vertical lighting device showing a conventional structure. 11... Tapered ball 12... Frame 13... Lighting device 14... Cable 15... Pulley 16... Brake unit 18... Tension body 19... Eccentric cam 20... Brake plate 21...Spring Figure 4 Figure 4

Claims (1)

[Scope of Claims] 1. An elevating lighting device in which a pedestal having a lighting fixture on a tapered pole is supported by a cable and the lighting fixture is raised and lowered, wherein the pedestal is provided with a brake unit that contacts the outer wall surface of the tapered pole; In addition, the brake unit is equipped with a tension body that rotates using a spring, and an eccentric cam is placed on the tension body. When the eccentric cam is rotated, a part of the eccentric cam comes into pressure contact with the brake plate, and the lighting equipment is lowered. An elevating lighting device characterized in that it is configured to stop.