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Lighting device for elevator car

A lighting device and elevator car technology, which is applied to elevators, transportation and packaging in buildings, can solve the problems of narrow light irradiation range and uneven light, and achieve the effect of reducing uneven light

Active Publication Date: 2021-07-16
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared to the light diffusion of fluorescent lamps, LEDs have a narrow range of light irradiation due to their strong directivity.
Therefore, if the fluorescent lamps are replaced with LEDs while maintaining the same structure as in the past, it is easy to cause uneven light

Method used

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  • Lighting device for elevator car
  • Lighting device for elevator car
  • Lighting device for elevator car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0020] Figure 1 ~ Figure 3 It is a figure explaining Embodiment 1 of this invention.

[0021] figure 1 The illustrated car compartment 1 is provided with a ceiling 4 on top of a wall 3 erected on a floor 2 , and a lighting device 5 is provided on the ceiling 4 . In addition, the entrance and exit 6 are opened and closed by a door 7 . An operation panel 9 for performing operations such as destination floor registration is provided on the wing wall 8 .

[0022] figure 2 The illustrated lighting device 5 is provided with LEDs 11 on the top plate 4 . A transmissive plate 12 is disposed below the LEDs 11 , and the light of the LEDs 11 passes through the transmissive plate 12 and is irradiated into the car compartment 1 . The transmission plate 12 is held by the seam 13 , and the seam 13 is suspended from the top plate 4 by the wire 14 . Thus, the transmission plate 12 is suspended from the top plate 4 . In addition, the entire circumference of the side surface of the light...

Embodiment approach 2

[0033] Figure 4 It is a figure explaining Embodiment 2 of this invention. In the figure, the same reference numerals as those in Embodiment 1 denote the same components, and description thereof will be omitted.

[0034] In Embodiment 2, some LED11 is attached to one bracket. Figure 4 The first LED unit 20 and the second LED unit 21 shown are each equipped with three LEDs 11 . Moreover, the heights at which the LEDs 11 are installed in the first LED unit 20 and the second LED unit 21 are different.

[0035] Such as Figure 4 As shown in (a), by the light irradiation 11a (dashed line) of the LED11 attached to the 1st LED unit 20, the end part of the shadow of the seam material 13 arises at 20a. And the end part of the shadow of the seam material 13 arises in 21a by the irradiation 11b (solid line) of the light of LED11 attached to the 2nd LED unit 21. As shown in FIG.

[0036] Such as Figure 4 As shown in (b), by irradiation of the LED 11, the end portion 21a of the sha...

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PUM

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Abstract

In an elevator lighting device, light irradiated from an LED light source concentrates shadows of joints supporting a transmissive plate, causing unevenness in light on the transmissive plate. The object of the present invention is to reduce the above-mentioned light unevenness. In order to achieve the above object, the lighting device of this elevator is equipped with: LED, which is installed on the top plate, and irradiates light to the car interior; a transmission plate, which transmits the light of the LED into the car interior; The transmission plate is suspended on the top plate, and multiple LEDs are installed on the top plate at different heights.

Description

technical field [0001] The invention relates to an illuminating device for an elevator car using LED as a light source. Background technique [0002] The light source of the lighting device in the elevator car room is gradually using LED instead of the traditional fluorescent lamp. However, compared to the light diffusion of fluorescent lamps, LEDs have a narrower range of light irradiation due to their strong directivity. Therefore, if the fluorescent lamps are replaced with LEDs while maintaining the same structure as in the past, light unevenness is likely to occur. For example, when the capacity of the lighting device is large, the light-transmitting plate is divided and inserted into the seam frame, and the shadow of the seam frame formed by the irradiation of the LED occurs on the light-transmitting plate. As a countermeasure against this, a lighting device has been proposed in which a part of the LEDs is arranged along the seam frame directly above the seam frame so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B11/02
CPCB66B11/02
Inventor 吉田谦吾山田初雄垂石圭悟秋元裕
Owner MITSUBISHI ELECTRIC CORP