JPH0261990A - Lighting fixture - Google Patents

Abstract

PURPOSE:To prevent multiple lamps from being concurrently lighted to flush a large inrush current by increasing the number of multiple lamps to be lighted one by one with a pull switch. CONSTITUTION:The rotary contact shoe 18 of a pull switch 11 is connected between switch contacts (a) and (e) in a two-lamp lighting fixture of the inverter lighting type. When the rotary contact shoe 18 is connected between switch contacts (b) and (f), inverter lighting devices 13 and 15 are operated, and the right and left lamps are lighted. The rotary contact shoe 18 is slid on a slide armature 17, thus the inverter lighting device 13 maintains the operation state, the left lamp is kept in the lighted state, the right lamp is newly lighted. When the rotary contact shoe 18 is connected between switch contacts (c) and (g), only the inverter lighting device 15 is operated, and only the right lamp is lighted. In this case, the right and left lamps are lighted, then both lamps are once turned off, and the right lamp is newly lighted. When the rotary contact shoe 18 is connected between switch contacts (d) and (h), the lamps are turned off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lighting fixture having a plurality of lamps.

[Conventional technology]

Conventionally, a lighting fixture having two fluorescent lamps has been installed above a kitchen sink. The lighting order of each lamp is
2 lights → 1 light (right) → 1 light (left) → dead.

[Problem to be solved by the invention]

However, if the lighting method is a high frequency lighting method such as inverter lighting, a large inrush current flows. In particular, when two lamps are turned on, a very large inrush current flows because the two lamps are turned on at the same time from a darkened state, which causes problems such as damage to the switch contacts and shortening of the service life.

Therefore, an object of the present invention is to provide a lighting fixture that can prevent large inrush current from flowing when lighting a plurality of lamps.

[Means to solve the problem]

In the lighting fixture of the present invention, the number of lit lamps provided in the fixture body is increased one by one using a pull switch.

[For production]

According to the lighting device of the present invention, the number of lit lamps is increased by one using the pull switch, so it is possible to prevent a large inrush current from flowing when a plurality of lamps are lit at the same time.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 to 4.

This embodiment relates to a two-lamp lighting fixture using an inverter lighting system, and its configuration is shown in FIG. , 12 are outlets for other electrical equipment. Further, 13 is an inverter lighting device for the left lamp, and 14 is its socket. Furthermore, 15 is an inverter lighting device for the right lamp, and 16 is its socket. Note that the white circles of the pull switch 11 indicate switching contacts, and 17 is a sliding contact piece that connects adjacent contacts without chattering.

Next, the lighting order will be shown using FIGS. 2 to 4.
In these figures, thick lines in the wiring indicate the energized state.

First, as shown in FIG. 2, the rotary contact 18 of the pull switch 11 is passed between switching contacts a and e, and current flows from the terminal block 10 to the path shown by the thick line, driving the inverter lighting device 13. , only the left lamp (not shown) lights up.

Then, as shown in FIG. 3, when the rotary contact 18 is passed between the switching contacts 1 and 1, the inverter lighting devices 13 and 15 are activated and the left and right lamps are lit.

At this time, since the rotating contactor 18 slides on the sliding contact piece 17, the inverter lighting device 13 maintains the operating state, the left lamp is kept lit, and the right lamp is newly lit. become.

Furthermore, as shown in FIG. 4, when it is passed between the rotary contact 18 and the switching contacts c and g, only the inverter lighting device 15 is activated and only the right lamp is lit.

At this time, from the state in which the left and right lamps in FIG. 3 are lit, both lamps are temporarily turned off, and the right lamp is newly lit.

Note that the rotating contactor 18 is a switching contact d.

If the lamp is passed between h, both lamps will go out.

As above, I light (left) → 2 lights → 1 light (right) → Off → L
The lighting order of the lights (left)...

According to the lighting equipment configured in this way, when two lamps are turned on as shown in Figure 3, it is only necessary to newly turn on the other lamp from the state in which one lamp is lit as shown in Figure 2, and the lamps are always turned on one by one. will increase. Therefore, it is possible to prevent a large inrush current from flowing when a plurality of lamps are lit at the same time. Therefore, there is no damage to the switch contacts, improving the reliability of the contacts, and since the inrush current is small, radio noise, disturbances, etc. are reduced. Moreover, since a large inrush current does not flow through the switch contact, there is no need to construct the switch contact with a large-capacity and expensive material (such as silver) to counteract the inrush current, and -S-like copper or copper alloy etc., which can reduce costs.

Although the lighting equipment in the above example uses an inverter, it may also be used as a high-power factor capacitor-based equipment or multiple incandescent lamps (furthermore, the lighting order is 1 light (left) → 1 light (right). )→2 lights→off, etc.Also, even in a lighting fixture with three or more lights, the number of lit lamps can be increased one by one.

〔Effect of the invention〕

According to the lighting fixture of the present invention, since the number of lamps lit is increased one by one using the pull switch, it is possible to prevent a large inrush current from flowing when a plurality of lamps are lit at the same time.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIGS. 2 to 4 are schematic diagrams showing the lighting order thereof. 11...Pull switch

Claims (1)

[Claims] A lighting fixture that includes a plurality of lamps provided on the fixture body and a pull switch that increases the number of lights lit by one of the plurality of lamps.