JPH01236182A - Elevator position indicator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to display colors of an elevator position display device.

[Conventional technology]

Conventional elevator position display devices were made of plastic or other material with characters representing the floors and arrows representing the direction of operation, and these were displayed from the back using incandescent light bulbs.
-As stated in Publication No. 567, incandescent light bulbs consume a lot of power.
They also have the disadvantage of short lifespans, so there is a recent trend toward using light emitting diodes.

[Problem to be solved by the invention]

Since the luminance of light emitting diodes is lower than that of incandescent light bulbs, when used as a position display device for an elevator, a plurality of light emitting diodes are arranged to ensure a sufficient illumination area. Furthermore, due to their physical properties, light emitting diodes can be classified into high and low brightness depending on the color of the light emitted, and high brightness types include red and yellow-green light emitting diodes. When using this high brightness light emitting diode as a position display device for elevators,
From the conventional concept, red is good as a display color in emergency situations, but it is not preferred as a display color during normal operation. Furthermore, when a yellow-green light emitting diode is used, it has the disadvantage that it becomes extremely difficult to see when the illuminance exceeds 600 lux under fluorescent lamp (particularly daylight color) illumination or external light. On the other hand, it is a well-known fact that the display color of conventionally used incandescent light bulbs (referred to as orange here) is not easily affected by fluorescent lighting or external light. Light emitting diodes have low brightness and are difficult to use in elevator front claw devices.

Therefore, a conventional elevator position display device using a light emitting diode could only be manufactured by taking into account the installation conditions of the elevator and the conditions of surrounding lighting equipment.

An object of the present invention is to provide a display device using a light emitting diode that is less susceptible to fluorescent lamp illumination or external light.

[Means to solve the problem]

The above object is achieved by displaying a display using a combination of two types of high brightness light emitting diodes.

[Effect]

That is, by arranging a plurality of high-brightness red light-emitting diodes and yellow-green light-emitting diodes and turning them on at the same time, an orange color can be displayed by the light mixing effect. This orange display is not affected by fluorescent lighting or external light, so it is not affected by the elevator installation environment.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The elevator position display device is cover plate 1
A car position indicator light 2 and a driving direction light 3 are provided.

The car position indicator light 2 and the driving direction light 3 are made of plastic that is transparent or semi-transparent and can transmit light from the back side and also has a diffusion effect. It consists of a house 5 for storing the lights and increasing the reflection efficiency of the light source, and a box 6 for storing them.

As an embodiment of the present invention, a light emitting diode element section 4 in which high brightness red light emitting diode elements 7 and yellow and green light emitting diode elements 8 are arranged at alternate intervals is arranged in the center of the house 5. The numbers do not have to be the same for each, and the ratio of numbers may be changed depending on the required display color. Further, the light emitting diodes may be connected in series or in parallel. By simultaneously lighting and displaying the two types of high-brightness light emitting diodes arranged in this way, a high-brightness orange surface that is less susceptible to the effects of fluorescent lighting or external light can be obtained due to the light mixing effect.

Although the present invention has been described as being used for an elevator position display device, it can also be applied to an elevator landing button or a call button for in-car operation.

〔Effect of the invention〕

According to the present invention, the elevator position display device is not affected by the installation conditions, that is, fluorescent lighting or external light.
An easy-to-read display device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a front view of an elevator position display device according to an embodiment of the present invention, FIG. 2 is a side sectional view of FIG. 1, FIG. 3 is a front view showing a light emitting diode array, and FIG. FIG. 4 is a side sectional view of FIG. 3; 4...Light emitting diode element part, 5 - Light emitting diode element part storage house, 7...Red light emitting diode element, Fig. 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] 1. A position display device for displaying the position and operating direction of an elevator, characterized in that a plurality of light emitting diodes emitting two different colors are provided in the center of a bowl-shaped reflective house. Elevator position display device.