JPWO2018167937A1 - Elevator car lighting equipment - Google Patents

Abstract

In an elevator illuminating device, shadows of joints that support the transmission plate gather due to light emitted from the LED light source, and light unevenness occurs in the transmission plate. An object of the present invention is to reduce the light unevenness. In order to achieve the above object, an elevator lighting device is mounted on a top plate, and holds an LED that irradiates light into a car room, a transmission plate that transmits light from the LED into the car room, and a transmission plate. And a joint suspended from the top plate, and a plurality of LEDs are mounted on the top plate at different heights.

Description

The present invention relates to an elevator car illumination device that uses LEDs as light sources.

  Instead of conventional fluorescent lamps, LEDs have been used as light sources for lighting devices in elevator cabs. However, a fluorescent lamp diffuses light, whereas an LED has a strong directivity, so the light irradiation range is narrow. For this reason, if the fluorescent lamp is replaced with an LED with the same structure as the conventional one, light unevenness is likely to occur. For example, when the capacity of the lighting device is large, the translucent plate is divided and inserted into the joint frame. As a countermeasure, a part of the LED is arranged along the joint frame directly above the joint frame so that the light emitted from the LED adjacent to the joint frame hits the joint frame and cancels the shadow generated on the diffusion surface of the translucent plate. There has been proposed a lighting device (for example, Patent Document 1).

Japanese Patent No. 5591775 (Fig. 2)

  However, placing the LED directly above the joint frame increases design constraints. Furthermore, in order to cancel the shadow of the joint frame generated on the light-transmitting plate, a large number of LEDs must be arranged adjacent to both sides of the joint frame.

  In addition, since the number of single LEDs is small, it is necessary to arrange a plurality of LEDs, and the tip of the shadow of the joint frame caused by the irradiation of the adjacent LEDs overlaps to generate a black line on the translucent plate. In order to turn off the black line by applying light, a large number of LEDs had to be arranged.

  This invention was made in order to solve the said subject, and it aims at reducing the light nonuniformity by the shadow of the joint frame produced by irradiation of LED.

  An elevator lighting device according to the present invention includes a plurality of LEDs that are attached to a top plate at different heights and irradiate light into a car room, a transmission plate that transmits light from the LEDs into the car room, and the transmission plate And a plurality of LEDs mounted on the top plate at different heights.

  According to the present invention, since the LED is mounted on the top plate of the car while changing its height, it is possible to reduce the light unevenness caused by the shadow of the joint.

It is a figure which shows the cage | basket | cabin interior of Embodiment 1 of this invention. It is sectional drawing (a) of the illuminating device in FIG. 1, the figure (b) seen from the lower part, and the side view (c). It is the E section detail drawing of Fig.2 (a). It is sectional drawing (a) of the illuminating device of Embodiment 2 of this invention, the figure (b) seen from the lower part, and the side view (c).

  Details of the present invention will be described below with reference to the drawings.

Embodiment 1
1 to 3 are diagrams for explaining Embodiment 1 of the present invention.
In the car room 1 shown in FIG. 1, a top plate 4 is provided on an upper portion of a wall 3 erected on a floor 2, and an illumination device 5 is provided on the top plate 4. The doorway 6 is opened and closed by a door 7. The sleeve wall 8 is provided with an operation panel 9 for performing operations such as destination floor registration.

  In the illumination device 5 shown in FIG. 2, the LED 11 is provided on the top plate 4. A transmission plate 12 is disposed below the LED 11, and light from the LED 11 is transmitted through the transmission plate 12 and irradiated into the car room 1. The transmission plate 12 is held by a joint 13, and the joint 13 is suspended from the top plate 4 by a wire 14. Thereby, the transmission plate 12 is suspended from the top plate 4. The lighting device 5 is covered with a side plate 15 on the entire periphery of the side surface.

The LED 11 is attached to a bracket 16 or a bracket 17 fixed to the top plate 4. The LED 11 includes a diffusing lens at the tip.

The brackets 16 and 17 are fixed to the top plate 4 alternately in a line in the vertical direction of the figure. The brackets 16 and 17 have different heights for mounting the LED 11, and the bracket 17 is higher than the bracket 16 from the top plate 4 than the bracket 16 as shown in FIG. In this embodiment, the height of the LED 11 from the top plate 4 is different by 15 mm. Since a plurality of brackets 16 and 17 are fixed to the top plate 4, a plurality of LEDs 11 are attached to the top plate 4 at different heights.

The transmission plate 12 is divided into a transmission plate 12a and a transmission plate 12b. This is because the capacity of the illumination device 5 in this embodiment is large. The transmission plate 12 a and the transmission plate 12 b are held by a joint 13, and the joint 13 is suspended from the top plate 4 by a wire 14.

  2 and 3, the light irradiation 11a of the LED 11 attached to the bracket 16 is indicated by a one-dot chain line, and the light irradiation 11b of the LED 11 attached to the bracket 17 is indicated by a solid line. As shown in FIG. 2A, a shadow of the joint 13 caused by the light emitted from the LED 11 is generated on the transmission plate 12. At this time, the tip 11 of the shadow of the joint 13 is generated at 11e by the light irradiation 11a (one-dot chain line) of the LED 11 attached to the bracket 16. And the tip 11 of the shadow of the joint 13 arises in 11d by the irradiation 11b (solid line) of the light of the LED 11 attached to the bracket 17. Thus, since the height of the LED 11 attached to the brackets 16 and 17 from the top plate 4 is different, the position of the tip of the shadow of the joint 13 generated on the transmission plate 12 is different and does not overlap. As shown in the figure, a space f is formed between the tip portions 11d and 11e of the shadow.

Further, as shown in FIG. 2B, the front end portions 11d and 11e of the shadow of the joint 13 are generated on the transmission plate 12b by the irradiation of the LED 11. However, there is an interval f between the shadow tip portions 11d and 11e, and the shadow tip portions do not overlap each other.

According to the first embodiment, the following effects can be obtained.
An LED 11 that is attached to the top plate 4 and irradiates light into the car room 1, a transmission plate 12 that transmits the light of the LED 11 into the car room 1, and a joint that holds the transmission plate 12 and is suspended from the top plate 4 13, and a plurality of LEDs 11 are attached to the top plate 4 at different heights, so that the shadow of the joints 13 caused by the irradiation light of the LEDs 11 is generated without overlapping the tip portions. Thereby, since the shadow is dispersed and does not overlap, a black line due to the overlap of the tip of the shadow does not occur. That is, light unevenness can be reduced. For this reason, it is not necessary to provide illumination for alleviating black lines.

  Moreover, since LED11 is attached to the brackets 16 and 17 from which the height to which LED11 is attached differs, a height difference can be set easily.

  Furthermore, since the LED 11 includes a diffusing lens at the tip, it is possible to irradiate light that is stronger than that of a normal LED, and the irradiation angle can be widened.

Embodiment 2
FIG. 4 is a diagram for explaining Embodiment 2 of the present invention. The same reference numerals in the figure as those in the first embodiment denote the same products, and a description thereof is omitted.
In the second embodiment, a plurality of LEDs 11 are attached to one bracket. Each of the first LED unit 20 and the second LED unit 21 shown in FIG. The first LED unit 20 and the second LED unit 21 are different in height for mounting the LED 11.

As shown to Fig.4 (a), the front-end | tip part of the shadow of the joint 13 arises in 20a by the light irradiation 11a (one-dot chain line) of LED11 attached to the 1st LED unit 20. As shown in FIG. And the tip 11 of the shadow of the joint 13 arises in 21a by the light irradiation 11b (solid line) of the LED 11 attached to the second LED unit 21.

As shown in FIG. 4B, the shadowed tip 21a of the joint 13 is generated on the transmission plate 12b by the irradiation of the LED 11. A shadow tip 20a is formed above the shadow tip 21a. Further, the shadow tip portions 20a and 21a have a gap g in the horizontal direction, and the shadow tip portions do not overlap each other.

According to the second embodiment, the following effects can be obtained.
A plurality of LEDs 11 are mounted and the first LED unit 20 is fixed to the top plate 4, and a plurality of LEDs 11 are mounted at a height different from that of the first LED unit 20 and the second LED unit is fixed to the top plate 4. 21, the shadow of the joint 13 caused by the irradiation light of the LED 11 occurs without the tip portion overlapping. Thereby, the black line by the tip part of a shadow overlapping does not arise. For this reason, it is not necessary to further provide illumination for alleviating black lines.

11 LED, 11a · b light irradiation, 11d · e shadow tip, 16 · 17 bracket, 20 first LED unit, 21 second LED unit.

Claims (4)

LED that is attached to the top board and irradiates light into the car room;
A transmission plate that transmits the light of the LED into the car room;
A joint that holds the transmission plate and is suspended from the top plate;
With
A plurality of the LEDs are attached to the top plate at different heights,
An elevator car lighting device characterized by that. A plurality of the LEDs, a first LED unit fixed to the top plate;
A plurality of LEDs mounted at a different height from the first LED unit, and a second LED unit fixed to the top plate;
The elevator car illuminating device according to claim 1. The LED is attached to brackets having different heights,
The elevator car illuminating device according to claim 1. The LED includes a diffusing lens that diffuses light at the tip.
The elevator car illuminating device according to any one of claims 1 to 3.

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