JP2008059859A - Light control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a simple and energy-saving light control windowpane. <P>SOLUTION: A light control glazing 4 of a window 3 of a building 1 is connected to a solar cell panel 2 attached to the outside wall of the building 1. As the output of the soar cell panel 2 grows, the light transmissivity of the light control glazing 4 becomes lower. Thus, the quantity of solar light incident in the room of the building 1 is automatically controlled to be almost constant. So with a simple configuration and energy saving, comfortable dwelling character is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a light control device capable of adjusting the brightness in a building by adjusting the amount of incident light of sunlight.

  Conventionally, an openable blind is installed in order to prevent strong sunlight from being irradiated into the building through the window glass and to adjust the amount of irradiation into the building.

  It may be used to adjust the visual angle from the inside of the building to the outside by adjusting the opening angle of the blind, or to prevent or adjust the inside of the building from the outside of the building. It is used to adjust or block the amount of sunlight that enters the building, until the sun sets.

  Since the incident angle of sunlight into the building changes depending on the time, the opening angle of the blind is appropriately adjusted manually or by electric operation corresponding to the angular direction of the sun relative to the window surface of the building from time to time. Adjusted.

  For example, in order to make the indoor brightness and temperature substantially constant by adjusting the amount of sunlight incident on the building, it is necessary to frequently adjust the blind opening angle.

Moreover, the proposal which controls the incident light quantity in the room | chamber interior of sunlight by adopting light control glass for the window glass of a building and changing the light transmittance of light control glass is also performed (for example, refer patent document 1). .)
JP-A-5-173191

  As described above, in order to adjust the amount of sunlight incident on the building, the opening angle of the blind is adjusted, or the transmittance of the light control glass fitted in the window is adjusted and controlled.

  Therefore, in the above conventional light control device, the occupants themselves sense the indoor / outdoor light environment and the incident angle or incident light quantity of the sun that change from moment to moment, or provide a separate sensor, and the incident light quantity Adjustment control was performed.

  However, in any case, the conventional light control device senses the incident angle and the incident light amount of sunlight by some means, and controls the adjustment of the incident light amount. Improvement of the structure for automating the installation is inevitable.

  Therefore, an object of the present invention is to provide a light control device capable of efficiently performing light control while achieving energy saving without adopting a particularly complicated control configuration.

  The light control device of the present invention includes a solar panel attached to the outer surface of an outer wall column of a building, and a solar panel that is connected to the solar panel and changes in light transmittance in response to changes in the output power of the solar panel. And a window of the building fitted with light glass.

  According to the light control device of the present invention, the light control glass of the building window changes its light transmittance in response to the change in output power of the solar panel. Dimming by energy saving can be realized without the need for power supply work.

  An embodiment of a light control device according to the present invention will be described below with reference to FIGS.

  That is, as shown in FIG. 1, the light control device of this embodiment is connected to a plurality of solar cell panels 2 fitted in the outer wall surface 1 a of the building 1 and the solar cell panel 2, and is connected to the window 3. It is comprised with the light control glass 4 fitted, and the light transmittance of the light control glass 4 is comprised so that it may be controlled by the output of the solar cell panel 2 supplied to the light control glass 4. FIG.

  Since the output of the solar cell panel 2 is proportional to the amount of sunlight irradiated, the output of the solar cell panel 2 is large when the amount of solar irradiation light to the solar cell panel 2 is large.

The amount of solar irradiation on the solar cell panel 2 is, of course, the amount of irradiation on the light control glass 4 of the window 3. In the light control device of this embodiment, the amount of solar irradiation on the solar cell panel 2 is large. When the amount of solar irradiation on the light control glass 4 increases, the output of the solar cell panel 2 is dimmed as the amount of solar irradiation on the solar cell panel 2 increases as shown in FIG. Since it operates so that the amount of light transmitted through the glass 4 is reduced, the brightness of the room (inside the building) due to sunlight irradiation becomes substantially constant.

  As described above, according to the light control device of the present embodiment, the resident in the building does not take time and installs a sensor for measuring the illuminance in the room separately. The amount can be made almost constant, and a comfortable habitability can be secured while realizing energy saving with a simple configuration and without using commercial power separately.

  The intensity of sunlight (generated power) and the transmittance of glass are in a proportional relationship (see Fig. 2) .When sunlight is weak, the transmittance is large, and conversely, when sunlight is strong, the transmittance is reduced. Measure energy saving in buildings.

It is a general-view figure of the building which employ | adopted one Example of the light modulation apparatus by this invention. FIG. 2 is an operational characteristic diagram of the light control device illustrated in FIG. 1.

Explanation of symbols

1 Building 1a Exterior Wall 2 Solar Panel (Solar Panel)
3 Window 4 Light control glass

Claims (2)

A solar panel attached to the outer surface of the outer wall of the building;
A light control device comprising: a window of the building fitted with a light control glass connected to the solar panel and having a light transmittance that changes in response to a change in output power of the solar panel.   The light control device according to claim 1, wherein the light control glass is configured such that light transmittance of the light control glass decreases in proportion to an output power of the sunlight.

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