KR20090073599A - Illumination apparatus in elevator - Google Patents

Abstract

A lighting apparatus inside elevator is provided to make the elevator user comfortable visually because the color temperature illuminates the elevator inside. A lighting apparatus inside elevator comprises a LED module(10) comprising a first LED group and a second LED group so that white light of different color temperature is emitted, and a controller(30) which controls LEDs of the second LED group and the first LED group.

Description

Lighting device in an elevator {ILLUMINATION APPARATUS IN ELEVATOR}

The present invention relates to a lighting apparatus in an elevator, and more particularly, to an lighting apparatus in an elevator using a light emitting diode (LED).

An elevator is a device for moving between floors through a shaft in a multi-storey building (particularly a high-rise building), and includes an interior space in which a person boards or loads cargo, and the interior space is opened and closed by a door.

An elevator, in particular a boarding elevator, is provided with an internal ceiling with a lighting device for brightly illuminating the internal space. Existing elevator lighting device uses a fluorescent lamp, the fluorescent lamp illuminates the state of the interior of the elevator at all times unless the power is intentionally cut off. Power consumption is inevitable because fluorescent lamps are always on 24 hours a day. In addition, the heat generation amount of the fluorescent lamp does not have a significant effect on the increase in the ambient temperature in a large space outside the room, but the temperature rise in the space by the fluorescent lamp is problematic in a narrow and closed space in the elevator.

In addition, the operation of the elevator, in particular, the elevator is stopped from the moving state or moving from the stationary state a lot of vibration occurs, such a vibration impacts the fluorescent lamp of the glass tube, so the structural stability of the lighting device and It may shorten the life. In addition, since the fluorescent lamp has a characteristic of diffusing and emitting light throughout its periphery, efficiency is low in illuminating the interior of the elevator under the ceiling. For that reason, sufficient space for the reflection of light behind the fluorescent lamp is required, which can cause a problem that the internal space of the elevator is reduced. In addition, due to the short life of the fluorescent lamp, the existing lighting device in the elevator, there is a problem that the maintenance needs such as replacing the fluorescent lamp frequently.

For the same reason as above, an illumination device in an elevator using LED as a light source has been conventionally proposed. A conventional lighting device in an elevator using a LED, like the conventional lighting device using a fluorescent lamp, always illuminates the inside of the elevator with the same white light.

On the other hand, the present inventors, while illuminating the interior of the elevator with white light, it is possible to illuminate the interior of the elevator with a white light having a different color temperature for each season or time zone, thereby developing an illumination device that makes the elevator user more visually comfortable feeling It became. For example, when illuminating the interior of the elevator with light that gives a hot feeling in the summer, or when illuminating the inside of the elevator with light that gives a cold feeling in the winter, the elevator user may feel more hot or cold.

Therefore, the technical problem of the present invention overcomes the disadvantages caused by using an existing fluorescent lamp as an illumination of an elevator by using LED, and furthermore, by using a plurality of LEDs having different color temperatures, It is to provide a lighting device in the elevator that can feel more comfortable.

An illumination device in an elevator according to an aspect of the present invention includes an LED module including a first LED group and a second LED group which are installed for lighting in an elevator and configured to emit white light having different color temperatures, and the first LED group. And a controller configured to control on and off LEDs of the LED group and the second LED group.

Advantageously, the LEDs of the first LED group are configured to emit warm white light and the LEDs of the second LED group are configured to emit cool white or daylight white light. do.

In this case, the controller may be configured to light only LEDs of any one of the first LED group and the second LED group according to an external signal corresponding to a season or a time zone. Alternatively, the controller may be configured to adjust the color temperature of the illumination according to the number of LED lighting of the first LED group and the number of LED lighting of the second LED group.

Preferably, the LEDs of the first and second LED groups can be attached to the ceiling plate of the elevator, which is a thermally conductive metal. Advantageously, said lighting device may further comprise a diffuser plate adapted to diffuse light from the LEDs of said first and second LED groups. The controller may be configured to stop the light emitting operation of the LED module when there is no call or operation of the elevator based on a signal of a detector for detecting an elevator call or an operation of the elevator.

Preferably, the lighting apparatus in the elevator may further include an emergency power supply for supplying power to the LED module when the main power supply is out of power under the control of the controller. Preferably, at least one of the first and second LED groups may include an AC LED.

According to embodiments of the present invention, various disadvantages caused by using an existing fluorescent lamp as an illumination of an elevator are overcome by using LED, and furthermore, by using a plurality of LEDs having different color temperatures, You can feel more comfortable.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided as examples to ensure that the spirit of the present invention can be fully conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the width, length, thickness, etc. of the components may be exaggerated for convenience. Like numbers refer to like elements throughout.

FIG. 1 is a cross-sectional view for describing a lighting apparatus in an elevator according to an exemplary embodiment of the present invention, and FIG. 2 is a plan view illustrating the lighting apparatus in an elevator in the direction A of FIG. 1.

1 and 2, a plurality of LEDs 12a and 12b are attached to the interior ceiling plate 2a of the elevator 2. The ceiling plate 2a is made of a thermally conductive metal, more preferably a stainless steel material. In addition, all the walls of the elevator coupled with the ceiling plate 2a are also made of metal.

 The heat generated during the light emission operation of the plurality of LEDs 12a and 12b forms a wide heat dissipation path through the thermally conductive ceiling plate 2a, and further, the thermally conductive metal forming the walls of the elevator. The heat generated from the LEDs 12a and 12b can easily escape to the outside without the need for installing heat dissipation means. At this time, a PCB in which the LED is mounted may be included between the ceiling plate 2a and the LEDs 12a and 12b. However, in this case, the PCB may be regarded as a part of several LEDs. omit.

The plurality of LEDs 12a and 12b are all LEDs emitting white light, and the LEDs are classified into LEDs in two groups having different color temperatures. In this embodiment, there are two groups of LEDs having different color temperatures, but this does not limit the present invention and may be a plurality of LED groups. Reference numeral 12a denotes an LED emitting warm light (warm white color) (denoted as 'WL'; hereafter referred to as 'warm white LED'). In addition, reference numeral 12b denotes LEDs (denoted by 'DL'; hereafter referred to as “daylight LEDs”) that emit light of a daylight color that gives a relatively cold feeling. Instead of the daylight LED 12b, LEDs emitting light of cool white at a similar color temperature may be used.

As well shown in Fig. 2, a plurality of LEDs 12a and 12b are widely installed over the entire area of the ceiling plate 2a. Furthermore, the plurality of LEDs 12a and 12b are provided in the ceiling plate 2a in a constant arrangement, that is, in an array of matrices. At this time, one warm white LED 12a and one daylight LED 12b are adjacent to each other in a pair, and the pair of warm white LED 12a and daylight LED 12b are plural in the ceiling plate 2a. Is aligned at each position, that is, at each position that is an element of the matrix. This arrangement is based on the difference in the arrangement relationship between the warm white LED 12a and the daylight LED 12b when the interior of the elevator is illuminated only with warm white light and only with daylight light (described in detail below). It prevents the difference in illumination that can be caused by, in particular, the uniformity of light.

Referring back to FIG. 1, a transparent diffuser plate 20 including, for example, white, milky white, and off-white reflective diffusers 21 is horizontally disposed directly below the plurality of LEDs 12a and 12b. . The light from the plurality of LEDs 12a and 12b diffuses further through the diffuser plate 20 to broadly illuminate the actual boarding space of the elevator located below the diffuser plate 20.

3 is a block diagram of an illumination device 1 in an elevator including a plurality of LEDs described above. The plurality of warm white LEDs 12a (see FIGS. 1 and 2) described above constitute a first LED group, and the plurality of daylight LEDs 12b (see FIGS. 1 and 2) described above constitute a second LED group. In FIG. 3, the first group of LEDs is represented by a block of reference number 10a and the second group of LEDs is represented by a block of reference number 10b.

As shown in FIG. 3, the lighting device 1 in the elevator of the present embodiment includes an LED module 10 composed of a plurality of LEDs, and a controller 30 for controlling the light emission operation of the LED module 10. do. The LED module 10 includes a first LED group 10a composed of a plurality of warm white LEDs 12a and a second LED group 10b composed of a plurality of daylight LEDs 12b.

In addition, the lighting device 1 in the elevator further includes a detection unit 40 for detecting a call of the elevator or an operation of the elevator. The controller 30 controls the LEDs in the elevator to light only when the elevator is called or when the elevator is in a moving state, based on the signal of the sensing unit 40. In other words, when the elevator is not waiting for a call or is not moving without a passenger, control is made to turn off the LEDs, thereby preventing unnecessary waste of power or warming of the interior of the elevator by long-time lighting of the LEDs.

In addition, in the elevator lighting device 1, the LED module 10 is mainly operated by power supply from the main power source 51, and when the abnormality of the main power source, that is, in case of power failure, is applied to the power supply of the emergency power source 52. LED module 10 is operated. The switch from the main power source 51 to the emergency power source 52 is performed by the relay operation of the power switch unit 53, and the power switch unit 53 may also be controlled by the controller 30.

In addition, the lighting device 1 in the elevator further includes a light switch unit 60. Under the control of the controller 30, the light switch unit 60 controls only the LEDs (eg, warm white or daylight LEDs) of any one group of the first LED group 10a and the second LED group 10b. It turns on. In this case, the control of the controller 30 may be performed according to an external signal corresponding to a season or a time zone. In addition, the control operation of the lighting switch unit 60 corresponding to the season or time zone may be automatically performed by a signal of a timer or a sensor that may directly or indirectly indicate the season or time zone. It may be made by a manual method of directly inputting seasons or time zones to an input device connected to the controller 30.

For example, when the season is winter, under the control of the controller 30, the light switch unit 60 lights only the warm white LEDs of the first LED group 10a, and the daylight color of the second LED group 10b. LEDs can be turned off. In this case, the elevator occupant may be provided with lighting of the warm feeling suitable for winter from the lighting device (1). On the contrary, when the season is summer, under the control of the controller 30, the lighting switch unit 60 may light only the daylight LEDs of the second LED group 10b. At this time, since the daylight white light is a cool feeling, the elevator occupant may be provided with a cool feeling suitable for the hot summer. As an application for providing cool feeling light, LEDs emitting cold white light instead of daylight LEDs may be used as elements of the second LED group 10b.

4 is a block diagram illustrating a lighting device in an elevator according to another embodiment of the present invention. Hereinafter, only the configuration different from the above embodiment will be described.

As shown in FIG. 4, the lighting switch unit 60 controls, under the control of the controller, the warm white LEDs 12a of the first LED group 10a and the daylight LEDs 12b of the second LED group 10b. On / off can be done in LED units, not in group units. This means that the color temperature of the illumination can be adjusted according to the number of lighting of the LEDs 12a of the first LED group and the number of lighting of the LEDs 12b of the second LED group. For example, when the warm-white LEDs 12a of the first LED group 10a are partially or fully lit, increasing the number of lighting of the daylight-colored LEDs 12b of the second LED group 10b relatively increases from the warm white light. Cool white light allows fine control of lighting.

At least one of the first and second LED groups 10a and 10b described in the above embodiments is preferably an LED included in the AC LED, wherein the AC LED has a plurality of light emitting cells formed on a single substrate inverse to each other. LEDs that are connected in parallel and can be driven directly by an AC power source, and without the need for other drive circuits such as converters, make it possible to install a lighting device in an elevator slim.

1 is a partial cross-sectional view for explaining the lighting device in an elevator according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating the A direction of FIG. 1. FIG.

Figure 3 is a block diagram for explaining the lighting device in the elevator according to an embodiment of the present invention.

Figure 4 is a block diagram illustrating a lighting device in an elevator according to another embodiment of the present invention.

Claims (9)

An LED module installed inside the elevator for illumination and including a first LED group and a second LED group configured to emit white light having different color temperatures; A controller configured to control on and off LEDs of the first LED group and the second LED group; Including elevator lighting device. The method of claim 1, wherein the LEDs of the first LED group are configured to emit warm white light and the LEDs of the second LED group emit white light of cool white or daylight. Lighting device in an elevator, characterized in that configured. The lighting in an elevator according to claim 1, wherein the controller is configured to light only LEDs of any one of the first LED group and the second LED group according to an external signal corresponding to a season or a time zone. Device. 2. The lighting apparatus of claim 1, wherein the controller is configured to adjust a color temperature of illumination according to adjustment of the number of LED lights of the first LED group and the number of LED lights of the second LED group. The lighting device of claim 1, wherein the LEDs of the first and second LED groups are attached to the ceiling plate of the elevator, which is a thermally conductive metal. The lighting device of an elevator according to claim 1, further comprising a diffuser plate installed to diffuse light from the LEDs of the first and second LED groups. The elevator according to claim 1, wherein the controller is configured to stop light emitting operation of the LED module when there is no call or operation of the elevator based on a signal of a detection unit detecting an elevator call or an operation of the elevator. My lighting device. The in- elevator lighting apparatus according to claim 1, further comprising an emergency power supply for supplying power to the LED module when the main power is out of power under the control of the controller. The lighting device of claim 1, wherein at least one of the first and second LED groups comprises an AC LED.

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