JPH03186836A - Dimming device - Google Patents

Abstract

PURPOSE:To sufficiently shield solar light or the like without providing a curtain or the like by providing a photochromic glass and an ultraviolet light source which irradiates the photochromic glass with ultraviolet rays. CONSTITUTION:The photochromic glass 3 and the ultraviolet light source 5 which irradiates the glass 3 with the ultraviolet rays are provided. Therefore, in the case that the sunlight is strong in the daytime, the glass 3 becomes a dark color because it is irradiated with the ultraviolet rays in the solar light. Besides, in the case that it is cloudy though it is the daytime or during the night, the glass 3 becomes the dark color in the same way as it is irradiated with the solar light because it is irradiated with the ultraviolet rays from the light source 5. Thus, when the glass 3 is applied to a window, for example, a dimming device which has a function such as light shielding and which becomes one part of interior decoration is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a light control device used in window glass of houses and the like to adjust sunlight entering the room.

``Conventional technology 1 In recent years, the interior decoration of houses has progressed, and a variety of interiors have been provided to suit the needs of residents. It usually has a built-in glass window and a curtain on the inside of the room to block light or to prevent the interior from being seen from the outside.

``Problem to be solved by the invention'' Incidentally, in recent years, the needs of residents have led to a desire for larger indoor spaces, and the glass windows themselves have changed from conventional transparent glass that only functions as glass. Instead of frosted glass, it is desired that the glass be multi-functional, such as being part of the interior decoration.

However, at present, it is necessary to provide curtains due to the necessity of blocking light, and the reality is that glass windows with multi-functions are not provided.

This invention has been made in view of the above two circumstances, and its purpose is to provide a light control device that has a function of blocking light when applied to a window, for example, and can also be used as a part of interior decoration. There is a particular thing.

“Means for Solving the Problems-1 The light control device of the present invention uses photochromic glass,
The solution to the above problem is to equip this photochromic glass with an ultraviolet light source that irradiates ultraviolet light.

"Made" According to the light control device of the present invention, when sunlight is strong such as during the day, the photochromic glass becomes dark in color due to irradiation with ultraviolet rays in sunlight.

In addition, even during the day, if it is cloudy or at night,
By irradiating photochromic glass with ultraviolet light from an ultraviolet light source, the photochromic glass becomes dark in color, similar to when exposed to sunlight.

"Example" Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIGS. 1 and 2 are diagrams showing an embodiment in which the light control device of the present invention is applied to a glass window.

In these figures, reference numeral 1 indicates a glass window, and this glass window 1 has a window frame 2 fitted with photochromic glass 3.

As the photochromic glass 3, a glass whose color changes reversibly by ultraviolet rays is particularly used, and among them, silver halide glass is preferably used. Silver halide glass has a composition shown in Table 1, for example, and has a wavelength of 30
It darkens when exposed to near ultraviolet rays in the range of 0 nm to 350 i+m.

Table 1: Composition of silver halide glass Here, both CQ and 13r are added as nitrogen to make it more sensitive to light, and Cu is added as a sensitizer. It is.

In addition, to produce such silver halide glass,
After heating and melting a batch containing the above components and further cooling to make silver and halogen present as ions,
It is reheated at 600°C to precipitate silver halide inside. When the silver halide glass thus obtained is irradiated with ultraviolet rays, the precipitated silver halide crystals are colored and darkened.

A cylindrical ultraviolet light source 5 is disposed below the eaves 4 on the outer upper part of the glass window 1. This ultraviolet light source 5
The lamp is composed of a mercury lamp capable of irradiating ultraviolet rays with a wavelength of 300 nm to 350 nm, and is arranged so as to irradiate the photochromic glass 3 of the glass window 1 with the light (ultraviolet rays).

Further, a regulator for the ultraviolet light source 5 is disposed on the indoor side, so that it is possible to turn on/off the power of the ultraviolet light source 5 and adjust the intensity of the ultraviolet irradiation amount from inside the room. Further, a light source 5 is provided behind this ultraviolet light source 5.
A reflecting mirror 6 is provided for condensing and reflecting the light irradiated from the mirror and irradiating the photon [Jmic glass 3]. The reflecting mirror 6 is a plate-shaped member curved into an arc shape when viewed from the side, and can be rotated around the ultraviolet light source 5 in the direction of the arrow in FIG. 2 by a co-movement mechanism shown in the diagram. be. That is, the reflecting mirror 6 is normally positioned so as to collect the light from the ultraviolet light source 5 and irradiate almost the entire surface of the photochromic glass 3 with the light, and depending on the situation, for example, the upper half of the glass window 1 can be colored dark. When it is desired to illuminate the lower half of the glass window 1, it can be rotated to the position shown by the two-dot chain line in FIG. be.

In a light control device consisting of a glass window 1, an ultraviolet light source 5, and a reflecting mirror 6 having such a configuration, when sunlight is strong such as during the day, ultraviolet rays in sunlight (2
Since most of the short wavelengths of 90 nm or less are cut, the wavelength range is about 290 nm to 400 nm. ), the photon glass 3 turns dark as shown in FIG. 3, and as a result, the sunlight is blocked by the glass 3, preventing sunlight from entering the room.

In addition, 11. Chromic glass 3
However, if you want to prevent people from looking into the room from outside, use the ultraviolet light source 5 as shown in factor 5.
Turn on the power to the photochromic glass 3 from the light source 4.
irradiate with ultraviolet light. Then, the glass 3 darkens as it receives ultraviolet rays in the same way as when it is irradiated with sunlight. Also, in this case, by rotating the reflective mirror 6, the photochromic glass 3 is partially darkened. It is also possible to let in light from the transparent parts.

With such a light control device, it is possible to sufficiently block out sunlight etc. without having to install curtains etc. inside the room, and also to prevent people from looking into the room from outside at night. It can be separated from the outside and separated from the independent space.Also, by appropriately rotating the reflecting mirror 6, it is possible to partially darken the photochromic glass 3 and let in light from the transparent part. .

In addition, in the case of the above example, the crow window 1 was made into one city, and when the sky was clear, it always received ultraviolet rays in the sunlight (J): 4 Tochromic crow 3 or dark color, for example, the crow window 1 2
As shown by the two-dot chain line in the garden, a window glass 7 that absorbs ultraviolet rays is installed on the outside of the glass window 1 so that it can be opened and closed. By doing so, it is possible to suppress the darkening of the photochromic glass 3, thereby allowing sufficient light to enter the room.

Further, in the embodiment L, the light control device of the present invention is applied to a glass window, but it can also be applied to a portion of a glass door leading to a balcony, for example.

``Effects of the Invention'' As explained above, the light control device of the present invention is equipped with 1) chromic glass and an ultraviolet light source that irradiates ultraviolet rays to this photochromic glass. When applied to windows, it is possible to sufficiently block sunlight etc. without the need for indoor curtains, etc. Moreover, the interior can be isolated from the outside and become independent so that no one can see into the interior even at night. Since curtains are unnecessary, the living space can be made larger by removing the curtains. In addition, since photochromic glass is colored and darkened, it can be used as part of interior decoration, unlike conventional transparent glass or frosted glass, and can therefore enhance the interior design.

[Brief explanation of drawings]

1 to 5 are diagrams showing an embodiment in which the light control device of the present invention is applied to a glass window, and FIG. 1 is a perspective view of a room equipped with this glass window, and FIG. is a side sectional view of this window glass, and FIGS. 3 to 5 are all perspective views for explaining the state of the photochromic glass. Photochromic glass, UV light source.

Claims (1)

[Claims] A light control device comprising a photochromic glass and an ultraviolet light source that irradiates the photochromic glass with ultraviolet light.