JP2000107273A - Planar deodorizing device used also as light emitting display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable light emitting and displaying a character and a graphic or the like together with deodorization by coating a photocatalyst on the front surface of a light transmission plate for deodorization effected by reacting to an ultraviolet ray, providing opposing edge lights on the end surface of the plate and executing light emitting display through the use of scattered light which is emitted from the front surface of the light transmission plate. SOLUTION: A base part 10 and a pair of display parts 20 and 20 are arranged in a planar deodorizing device which is disposed in the toilet or the like in a train. The deodorizing edge light 11 and the display edge lights 12a and 12b are disposed in the base part 10. Each display part 20 is provided with the deodorizing light transmission plate 21 and display light transmission plates 22a and 22b. In the deodorizing light transmission plate 21, multiple grooves 21' are formed over a whole front surface at a front side and the photocatalyst layer 23 is formed over the whole front surface at a back surface side. In the display light transmission plates 22a and 22b, a reflecting member 24 is held between the deodorizing light transmission plate 21 and the display light transmission plate 22a, and the multiple grooves 22a' are formed on the front surface at the back surface side of the display light transmission plate 22a in accordance with the character and the graphic or the like to be displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin and highly efficient plate-type deodorizing apparatus which is installed in a room, is not bulky, and is suitable for deodorizing in a narrow space such as a car interior. The present invention relates to a plate-type deodorizing device that can also perform light-emitting display of figures and the like and is also used as a light-emitting display device.

[0002]

2. Description of the Related Art It has been known that a photocatalyst such as titanium oxide can be deodorized by irradiating it with ultraviolet rays. A conventional deodorizing device utilizing this principle is configured such that, for example, a photocatalyst is attached to a nonwoven fabric, and ultraviolet light is irradiated on the photocatalyst.

[0003]

However, in the conventional deodorizing apparatus using such a nonwoven fabric, there is a problem that many parts are not irradiated with ultraviolet rays, and the photocatalyst and the ultraviolet rays are not effectively utilized. In addition, there is a problem that the device itself is large and its use is limited. Furthermore, the device is basically a single function.

[0004] The present invention has been made in view of the above circumstances, is thin and suitable for deodorization in a small space such as a car, is installed in a room, is not bulky, and has high efficiency.
Still another object is to provide a plate-type deodorizing device which also has a function as a light-emitting display device.

[0005]

A first plate-type deodorizing apparatus according to the present invention has a surface subjected to a treatment for diffusing light incident from an end face, and the surface is deodorized in response to ultraviolet rays. A light guide plate coated with a photocatalyst to be performed, and provided with an edge light that is provided to face an end surface of the light guide plate, and into the light guide plate from the end surface, and that receives light including a wavelength in the ultraviolet range, and It is configured to perform light emission display using scattered light emitted from the surface.

More specifically, diffuse light is emitted on both sides of the light guide plate, one is irradiated on the photocatalyst, and the other is used for light emission display. Alternatively, a reflection sheet is attached to the back surface of the diffusion plate, the diffused light is emitted only to the front side, and the scattered light is used for both deodorization and light emission display. In the former case, the light transmitted through the photocatalyst may cause glare or the like. In such a case, it is preferable to dispose a light shielding plate with an appropriate gap from the photocatalyst coating surface.

In the latter case, that is, when a reflection sheet is attached to the back surface of the diffusion plate, the diffused light is emitted only to the front side, and the scattered light is used for both deodorization and light emission display, the one surface side is used. Since both deodorization and light emission display are performed, deodorization is efficiently performed even in the case of a wall-hanging type in which the back surface approaches a wall surface.

The edge light facing the end face of the light guide plate is
A combination of an edge light for deodorization that mainly emits ultraviolet light and an edge light for display that mainly emits visible light is preferable from the viewpoint of deodorization and display properties.

In the latter case, a light guide plate for display can be arranged on the side of the surface coated with the photocatalyst with a gap for ventilation. It is preferable to forcibly ventilate this gap with a fan. The display light guide plate preferably has a structure in which a display film is attached to the surface. Thus, a variety of light emitting displays can be performed. Also,
The light guide plate for display does not require a surface treatment for diffusing light. In addition, the photocatalyst can be coated on the surface on the gap side. Thus, the photocatalyst is arranged on both sides of the gap.

In the first plate-type deodorizing apparatus according to the present invention, light containing a wavelength in the ultraviolet region is incident on the light guide plate from the end face thereof. The light is diffused in the light guide plate and emitted from the surface. Here, the outgoing light contains ultraviolet light. The surface of the light guide plate is coated with a photocatalyst that reacts to ultraviolet light to deodorize. Therefore, a deodorization reaction proceeds on the surface of the light guide plate.

Such a plate-type deodorizing device is thin. In addition, a large reaction area is secured, so that the efficiency is high. Further, since the surface of the light guide plate emits light, the light can be used to function as a plate-type light emitting display device. For example,
If a part of the process for irregularly reflecting light is omitted, the part becomes like a shadow picture, thereby enabling light-emitting display of characters, figures, and the like. Further, if the treatment is performed on the entire surface, the diffusion plate becomes a planar luminous body, so that luminous display can be performed by attaching a film to the luminous surface. And
Such a light emitting display function is remarkably improved in the following second plate-type deodorizing device.

That is, in the second plate-type deodorizing apparatus according to the present invention, the surface is subjected to a treatment for diffusing the light incident from the end face, and the surface is coated with a photocatalyst which deodorizes in response to ultraviolet rays. A light guide plate for deodorization, and a light guide plate for deodorization, which is provided to face an end face of the light guide plate for deodorization, and from which light enters the light guide plate into the light guide plate, mainly for deodorizing edge light and light guide plate for deodorization. A light guide plate for display, which is arranged on one surface side and has been subjected to a process for irregularly reflecting light incident from the end face, has been provided on the front face, and is provided opposite to the end face of the light guide plate for display, and the light guide plate is provided from the end face. The light plate is provided with a display edge light for mainly entering visible light.

In the second plate-type deodorizing device according to the present invention, a light guide plate for display having an edge light is combined with the first plate-type deodorizing device described above. By performing light-emitting display using a light guide plate dedicated to display, clearer display is possible. In addition, since it is not necessary to use deodorizing light for display, deodorizing efficiency is improved. Furthermore, even if the light guide plate for display and the edge light are combined, the thickness is small, so that the display section is still thin.

The light guide plate for display can be arranged on the side of the surface of the light guide plate for deodorization which is not coated with the photocatalyst. In addition, the light guide plate for deodorization can be arranged with a ventilation gap on the side of the surface coated with the photocatalyst.

In the former case, both light guide plates can be brought into close contact with each other, and the thickness of the device can be reduced.

It is preferable to interpose a planar reflecting member between the light guide plate for deodorization and the light guide plate for display. According to this, the light for deodorization efficiently reaches the photocatalyst, and the light for display is efficiently used for display.

The display light guide plate preferably has a structure in which a display film is attached to the surface opposite to the side on which the deodorization light guide plate is disposed. According to this configuration, various displays can be performed depending on the design of the film.

In the former case, deodorization is basically performed on the back side,
Since the luminous display is performed on the front side, it is mounted on the dashboard on the rear side of the automobile to provide an in-vehicle deodorizing device that also functions as a brake lamp. In this case, the light guide plate for display faces the rear side of the vehicle and is configured to emit red surface light.
If an advertisement is displayed on the light guide plate, an in-vehicle deodorizing device that doubles as an advertising light for a taxi can be obtained. Also, it can be a wall-mounted display and deodorizing device. This is suitable as a deodorizing device in a toilet or the like of a vehicle such as a bullet train.

When the light transmitted through the photocatalyst causes glare or the like, it is preferable to dispose a light-shielding plate with an appropriate gap from the surface coated with the photocatalyst.

In the latter case, that is, when the light guide plate for display is disposed with a ventilation gap on the side of the surface of the light guide plate for deodorization on which the photocatalyst is coated, the light guide plate on one surface side is provided. Since both deodorization and light emission display are performed, deodorization is efficiently performed even in the case of a wall-hanging type in which the back surface approaches a wall surface. It is preferable to forcibly ventilate this gap with a fan.

In the latter case, it is preferable to attach a planar reflecting member to the surface of the light guide plate for deodorization which is not coated with the photocatalyst. According to this, the light for deodorization efficiently reaches the photocatalyst.

The display light guide plate preferably has a structure in which a display film is attached to the surface. Thus, a variety of light emitting displays can be performed. In addition, the photocatalyst can be coated on the surface on the gap side. Thereby, the photocatalysts are arranged on both sides of the gap, and the deodorizing efficiency increases.

In the first and second plate-type deodorizing apparatuses according to the present invention, the light guide plate may be made of any material as long as it can transmit light, and glass, plastic, or a material obtained by bonding these materials is suitable. Plastics are preferred in terms of weight, weight and the like, and acrylic plastics are particularly preferred in terms of light transmittance and surface hardness.

Any photocatalyst may be used as long as it reacts with ultraviolet rays to produce a deodorizing effect.
Examples thereof include tin oxide, tungsten oxide, and a mixture thereof.

Examples of the process for diffusing light include forming a large number of fine grooves and holes by laser processing, engraving, shot blasting, and the like, printing reflective ink, and the like.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a plate-type deodorizer according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional plan view of a central portion of the plate-type deodorizer.

The plate-type deodorizing device according to the first embodiment of the present invention is a specific example of the second plate-type deodorizing device according to the present invention, and is installed in a toilet of a train such as a bullet train. is there. This plate-type deodorizing device includes a vertical base portion 10 attached to a wall surface of the toilet or the like, and a pair of vertical flat display portions 2 protruding like blades on both sides of the base portion 10.
0, 20.

Inside the base portion 10, a deodorizing edge light 11 is vertically arranged, and
Two display edge lights 12a,
12b are arranged vertically. Further, a power supply circuit including an inverter for causing these to emit light is provided. The deodorizing edge light 11 mainly emits ultraviolet light, and the display edge lights 12a and 12b mainly emit visible light (for example, white light).

The display sections 20, 20 are supported by the base section 10 sufficiently away from the wall surface. Each display unit 20 includes a deodorizing light guide plate 21 and two display light guide plates 22a and 22b superposed on the front side thereof. The deodorizing edge light 11 is opposed to the inner end surface (the end surface on the base portion 10 side) of the deodorizing light guide plate 21 over substantially the entire length. Two display edge lights 12a and 12b are opposed to inner end faces (end faces on the base portion 10 side) of the two display light guide plates 22a and 22b, respectively.

The deodorizing light guide plate 21 is made of an acrylic plate or the like, and the front surface thereof is provided with a treatment for diffusion.
A large number of parallel grooves 21 'are formed over the entire surface by laser processing or the like. Light guide plate 2 for deodorization
A photocatalyst layer 23 made of titanium oxide or the like is formed on the entire surface on the back side of the substrate 1.

The two display light guide plates 22a and 22b are also made of an acrylic plate or the like. A sheet-like reflecting member 24 is sandwiched between the deodorizing light guide plate 21 and the display light guide plate 22a arranged on the front side thereof. On the back surface of the display light guide plate 22a, a number of parallel grooves 22a ', 22a',... Partially formed. The colored film 2 is provided between the display light guide plates 22a and 22b.
Reference numeral 5a partially intervenes in correspondence with characters, figures, and the like to be displayed.

On the back surface of the display light guide plate 22b,
As a process for diffusion, a large number of parallel grooves 22 are used.
b ', 22b',... are partially formed by laser processing or the like corresponding to characters, figures, etc. to be displayed. A colored film 25b is provided on the front surface of the display light guide plate 22b.
Are partially pasted corresponding to characters, figures, etc. to be displayed. The grooves 22b ', 22b',.
a ', 22a', and so on, and the colored film 25b has a different color from the colored film 25a.

In the plate-type deodorizing apparatus according to the first embodiment of the present invention, when the deodorizing edge light 11 and the display edge lights 12a and 12b emit light, the light (mainly ultraviolet light) emitted from the deodorizing edge light 11 is emitted. Is the display part 2 on both sides
The light enters the light guide plates 21 and 21 for deodorization. The light incident on the deodorizing light guide plate 21 is diffused by the grooves 21 ′, 21 ′,..., But since the reflection member 24 is provided on the front side, the diffused light is diffused on the rear side of the deodorization light guide plate 21. Emit. Here, a photocatalyst layer 23 made of titanium oxide or the like is formed on the entire surface of the back surface of the deodorizing light guide plate 21. The emitted light is mainly ultraviolet light. For these reasons, efficient deodorization is performed on the back side of the display units 20 and 20.

On the other hand, the light (mainly visible light) emitted from the display edge light 12a enters the display light guide plates 22a of the display units 20 on both sides. The light (mainly visible light) emitted from the display edge light 12b enters the display light guide plates 22b, 22b of the display units 20, 20 on both sides.

The light incident on the display light guide plate 22a is
a ', 22a',..., but the diffused light is emitted to the front side of the display light guide plate 22a because the reflection member 24 is provided on the back side. Here, the groove 22
are formed partially corresponding to characters, figures, etc. to be displayed. Also, the display light guide plate 22a
On the front side, a colored film 25a is partially arranged corresponding to characters, figures and the like to be displayed. For this reason, predetermined characters, figures, and the like are displayed in color in a predetermined color on the front side.

The light incident on the display light guide plate 22b is diffused by the grooves 22b ', 22b',..., But since the reflection member 24 is provided on the back side, the diffused light is transmitted to the display light guide plate 22b. 22b is emitted to the front side. Here, the groove 22
are partially formed corresponding to characters, figures, etc. to be displayed. The display light guide plate 22b
A colored film 25b is partially disposed on the front side of the camera in correspondence with characters, figures, and the like to be displayed. For this reason, predetermined characters, figures, and the like are displayed in color in a predetermined color on the front side.

Therefore, on the front side of the display units 20, 20,
Two types of characters, figures, and the like are displayed in a composite color in two colors.

In the first embodiment, the number of display light guide plates is two, but may be one, three or more, or may be omitted.
Then, the number of display edge lights is adjusted accordingly. When the light guide plate for display is omitted, the display is performed by the light guide plate for deodorization. Although the display of characters, figures, and the like is performed by partially forming the groove, the groove may be formed on the entire surface, and the display may be performed by separately attaching films. The base portion is vertically arranged at the center in the width direction, but may be horizontally arranged at the center in the up-down direction, and further, may be arranged on both sides, up and down, both sides and up and down. The display is completely flat,
It is also possible to bend back or front.

In this embodiment, the display unit is attached directly to the wall surface, but may be attached by a suction cup. Further, by attaching a suction cup or the like to both sides of the display unit via a free arm, the degree of freedom of the attachment position is increased.

Part of the light incident on the deodorizing light guide plate 21 passes through the photocatalyst layer 23 made of titanium oxide or the like, and emits purple light. If this emission becomes a problem, a light shielding plate is provided on the back side of the deodorizing light guide plate 21 with a gap between the photocatalyst layer 23. If there is a gap between the photocatalyst layer 23 and the light shielding plate, the deodorizing function does not decrease.

FIG. 3 is a front view of a plate-type deodorizer according to a second embodiment of the present invention, FIG. 4 is a plan view of the plate-type deodorizer, and FIG.
FIG. 2 is a vertical sectional side view of the plate-type deodorizing apparatus.

The plate-type deodorizing device according to the second embodiment of the present invention is a specific example of the second plate-type deodorizing device according to the present invention, like the plate-type deodorizing device according to the first embodiment. This is an in-vehicle deodorizing device that is mounted on the dashboard on the rear side of the vehicle and also serves as a brake lamp. This deodorizing device includes a base unit 10 mounted on the dashboard, and a horizontally long display unit 20 provided on the base unit 10.

Inside the base portion 10, the deodorizing edge light 11, the display edge light 12, the inverter 13 and the battery 14 for emitting the deodorizing edge light 11, and the display edge light 12 are emitted. , An inverter 15 and a battery 16 are provided. The deodorizing edge light 11 mainly emits ultraviolet light, and substantially faces the lower end surface of the deodorizing light guide plate 21 described later over substantially the entire length. The display edge light 12 mainly emits visible light (for example, white light), and substantially faces the lower end surface of a display light guide plate 22 described later over substantially the entire length.

The display section 20 includes a light guide plate 21 for deodorization and a light guide plate 22 for light emission held in a frame 29 having a frame shape. The deodorizing light guide plate 21 and the light emitting light guide plate 22 made of an acrylic plate or the like are overlapped with the deodorizing light guide plate 21 facing the inside of the vehicle (front of the vehicle) and the light emitting light guide plate 22 facing the rear of the vehicle. Has a sheet-like reflecting member 24
Is sandwiched.

A photocatalyst layer 23 made of titanium oxide or the like is formed on the entire surface of the deodorizing light guide plate 21 on the inside of the vehicle (front side of the vehicle). On the surface on the rear side of the vehicle (on the side of the reflection member 24), a large number of parallel grooves are formed over the entire surface by laser processing or the like as a process for diffusion.

On the surface of the display light guide plate 22 on the rear side of the vehicle,
A red colored film 23 is stuck over the entire surface. On the surface on the front side of the vehicle (on the side of the reflection member 24), a large number of parallel grooves are formed over the entire surface by laser processing or the like as a process for diffusion.

In the plate-type deodorizing device according to the second embodiment of the present invention, the edge light 11 for deodorizing is emitted during driving of the automobile, more precisely, when deodorizing is required. The light (mainly ultraviolet light) emitted from the deodorizing edge light 11 enters the deodorizing light guide plate 21 of the display unit 20. The light incident on the deodorizing light guide plate 21 is diffused by the groove, but the reflection member 24 is provided on the rear side of the vehicle, so that the diffused light is emitted to the vehicle front side (indoor side) of the deodorizing light guide plate 21. . Here, a photocatalyst layer 23 made of titanium oxide or the like is formed over the entire surface of the deodorizing light guide plate 21 on the front side (inside of the vehicle) of the vehicle. The emitted light is mainly ultraviolet light. For these reasons, efficient deodorization is performed on the vehicle front side (indoor side) of the display unit 20.

On the other hand, the display edge light 12 emits light in conjunction with the brake lamp of the automobile when the brake is depressed. Light (mainly visible light) emitted from the display edge light 12 enters the display light guide plate 22 of the display unit 20. Although the light incident on the display light guide plate 22a is diffused by the groove, the diffused light is emitted to the rear side of the display light guide plate 22 on the vehicle side because the reflection member 24 is provided on the front side (indoor side) of the vehicle. . Here, a red colored film 25 is attached to the entire surface of the display light guide plate 22 on the rear side of the vehicle. For this reason, the rear surface of the display unit 20 emits red light in total in conjunction with the brake lamp.

Accordingly, the plate-type deodorizing device according to the second embodiment functions as an in-vehicle deodorizing device that also serves as a brake lamp.

In the second embodiment, a light emission display as a brake lamp is performed.
An advertisement or the like can be displayed by partially forming the diffusion groove. A device that displays an advertisement is suitable as a deodorizing device for a taxi. Further, similarly to the above-described embodiment, it is also possible to use a plurality of display light guide plates or omit them.

In this embodiment, the display unit 20 is mounted. However, a suction cup may be attached to both sides of the display unit 20 via a free arm, and the suction cup may be attached to a window glass. In the case of this type, the degree of freedom of the mounting position is high, and it can be said that this mounting form is particularly effective in a narrow vehicle. Part of the light incident on the deodorizing light guide plate 21 passes through the photocatalyst layer 23 made of titanium oxide or the like, and emits purple light. In the case where this light emission interferes with the operation, a light shielding plate is provided on the back side of the deodorizing light guide plate 21 with a gap provided between the light guide plate 21 and the photocatalyst layer 23. Then, the problem caused by the light emission of the photocatalyst layer 23 can be solved without lowering the deodorizing function.

FIG. 6 is a vertical sectional side view of a plate-type deodorizing apparatus according to a third embodiment of the present invention.

The plate-type deodorizer according to the third embodiment of the present invention is similar to the plate-type deodorizers according to the first and second embodiments.
It is a specific example of the 2nd board type deodorizing device concerning the present invention. First
The most different point from the plate-type deodorizing device according to the second embodiment is that the first and second embodiments perform luminous display on the front side and perform deodorization on the back side, whereas the third embodiment has Such a plate-type deodorizing device is characterized in that both light emission display and deodorizing are performed on the front side.

That is, the display unit 20 of the plate-type deodorizing apparatus according to the third embodiment comprises a deodorizing light guide plate 21 and two display guides disposed in front of the plate with a gap 30 for ventilation. Light plates 22a and 22b are provided. The edge surface 11 of the deodorizing light guide plate 21 faces the edge light 11 for almost the entire length. Two superimposed display light guide plates 22
a and 22b, two display edge lights 1
2a and 12b face each other over substantially the entire length.

The deodorizing edge light 11 mainly emits ultraviolet light, and the display edge lights 12a and 12b mainly emit visible light (for example, white light).

The deodorizing light guide plate 21 is made of an acrylic plate or the like, and a large number of parallel grooves are formed on the entire back surface thereof by laser processing or the like as a process for diffusion, and a sheet-like shape is formed. The reflection member 24 is stuck. On the front surface of the deodorizing light guide plate 21, a photocatalyst layer 23 made of titanium oxide or the like is formed so as to cover the entire surface.

The two display light guide plates 22a and 22b are also made of an acrylic plate or the like. On the rear surface of the display light guide plate 22a, a large number of parallel grooves are partially formed by laser processing or the like corresponding to characters and figures to be displayed, as a process for diffusion. , Sheet-like reflecting member 24
Is adhered, and a photocatalyst layer 23 made of titanium oxide or the like is further formed over the entire surface. The colored film 25a is partially interposed between the display light guide plates 22a and 22b corresponding to characters, figures, and the like to be displayed.

On the rear surface of the display light guide plate 22b,
As a process for diffusion, a number of parallel grooves are partially formed by laser processing or the like corresponding to characters, figures, and the like to be displayed. On the front surface of the display light guide plate 22b, a colored film 25b is partially adhered corresponding to characters, figures, and the like to be displayed.

In the display light guide plates 22a and 22b, the respective grooves have different characters and figures, and the colored films 25a and 25b have different colors.

In the plate-type deodorizing apparatus according to the third embodiment of the present invention, when the deodorizing edge light 11 and the display edge lights 12a and 12b emit light, the light (mainly ultraviolet light) emitted from the deodorizing edge light 11 is emitted. Is light guide plate 2 for deodorization
Incident on 1. The light incident on the deodorizing light guide plate 21 is diffused by the groove, but the diffused light is emitted to the front side of the deodorizing light guide plate 21 because the reflecting member 24 is provided on the back side. Here, a photocatalyst layer 23 made of titanium oxide or the like is formed on the entire front surface of the light guide plate 21 for deodorization. In addition, a photocatalyst layer 23 made of titanium oxide or the like is formed on the entire surface of the display light guide plate 22a disposed on the front side of the deodorization light guide plate 21 with a gap 30 therebetween. Thus, the deodorizing light guide plate 2
The air flowing through the gap 30 on the front side of 1 is efficiently deodorized from both sides. Air is forced to flow through the gap 30 by a fan (not shown).

On the other hand, light (mainly visible light) emitted from the display edge light 12a enters the display light guide plate 22a. Light (mainly visible light) emitted from the display edge light 12b enters the display light guide plate 22b.

Although the light incident on the display light guide plate 22a is diffused by the groove, the diffused light is emitted to the front side of the display light guide plate 22a because the reflection member 24 is provided on the back side. Here, the grooves are partially formed corresponding to characters, figures, and the like to be displayed. Also, the display light guide plate 22
The characters to be displayed by the colored film 25a
They are partially arranged corresponding to figures and the like. For this reason, predetermined characters, figures, and the like are displayed in color in a predetermined color on the front side.

Although the light incident on the display light guide plate 22b is diffused by the groove, the diffused light is emitted to the front side of the display light guide plate 22b because the reflection member 24 is provided on the back side. . Here, the grooves are partially formed corresponding to characters, figures, and the like to be displayed. On the front side of the display light guide plate 22b, a colored film 25b is partially arranged corresponding to characters, figures and the like to be displayed. For this reason, predetermined characters, figures, and the like are displayed in color in a predetermined color on the front side.

Therefore, on the front side of the display section 20, two types of characters and figures are displayed in two colors in a composite color, and at the same time, the front side of the deodorizing light guide plate 21 is deodorized. That is, both display and deodorization are performed on the front side. Therefore, even if the plate-type deodorizing device is arranged close to the wall surface, efficient deodorizing is performed.

In the third embodiment, the number of display light guide plates is two, but may be one, three or more, or may be omitted.
Then, the number of display edge lights is adjusted accordingly. When the light guide plate for display is omitted, the display is performed by the light guide plate for deodorization. Although the display of characters, figures, and the like is performed by partially forming the groove, the groove may be formed on the entire surface, and the display may be performed only by the film.

FIG. 7 is a vertical sectional side view of a plate-type deodorizing apparatus according to a fourth embodiment of the present invention.

The plate-type deodorizing device according to the fourth embodiment of the present invention is a specific example of the first plate-type deodorizing device according to the present invention. As with the deodorizer, both are performed on the front side.

That is, the display unit 20 of the plate-type deodorizing apparatus according to the fourth embodiment of the present invention comprises a light guide plate 21 for deodorization and a single sheet disposed in front of the light guide plate 21 with a gap 30 for ventilation. And a light guide plate 22 for display. On the end face of the light guide plate 21 for deodorization, the edge light 11 for deodorization and the edge light 12 for display face each other over almost the entire length. The deodorizing edge light 11 mainly emits ultraviolet light, and the display edge light 12 mainly emits visible light (for example, white light).

The deodorizing light guide plate 21 is formed of an acrylic plate or the like, and a large number of parallel grooves are formed on the entire back surface thereof by laser processing or the like as a process for diffusion. The reflection member 24 is stuck. On the front surface of the light guide plate 21 for deodorization, a photocatalyst layer 23 made of titanium oxide or the like is formed over the entire surface.

The display light guide plate 22 is made of an acrylic plate, especially a milk plate having a light diffusion function. On the rear surface of the display light guide plate 22, a photocatalyst layer 23 made of titanium oxide or the like is formed so as to cover the entire surface. Light guide plate 22 for display
A photographic film for advertisement or the like is attached as a colored film 25 to the front surface of the.

In the plate type deodorizing apparatus according to the fourth embodiment of the present invention, when the deodorizing edge light 11 and the display edge light 12 emit light, the light (mainly ultraviolet light) emitted from the deodorizing edge light 11 is deodorized. Incident on the light guide plate 21. The light incident on the deodorizing light guide plate 21 is diffused by the groove, but since the reflection member 24 is provided on the back side,
The diffused light is emitted to the front side of the deodorizing light guide plate 21. Here, a photocatalyst layer 23 made of titanium oxide or the like is entirely formed on the front surface of the light guide plate 21 for deodorization. Further, a photocatalyst layer 23 made of titanium oxide or the like is entirely formed on the surface on the back side of the display light guide plate 22 which is disposed with a gap 30 in front of the deodorization light guide plate 21. As a result, the air flowing through the gap 30 on the front side of the deodorizing light guide plate 21 is efficiently deodorized from both sides. Air is forced to flow through the gap 30 by a fan (not shown).

On the other hand, light (mainly visible light) emitted from the display edge light 12 also enters the deodorizing light guide plate 21.
The light incident on the deodorizing light guide plate 21 is diffused by
Since the reflection member 24 is provided on the back side, the diffused light is emitted to the front side of the light guide plate 21 for deodorization,
0 and the light passes through the light guide plate 22 for display and exits to the front side thereof. As a result, predetermined characters, figures, and the like are displayed in color in a predetermined color on the front side.

Therefore, characters and graphics are displayed in color on the front side of the display unit 20, and at the same time, deodorization is performed on the front side of the light guide plate 21 for deodorization. That is, both display and deodorization are performed on the front side. Therefore, even if the plate-type deodorizing device is arranged close to the wall surface, efficient deodorizing is performed. Further, the display light guide plate 22 is of a light transmission type, and does not require grooves or the like for light diffusion. That is, groove processing for light diffusion is performed only on the deodorizing light guide plate 21. Therefore, the manufacturing cost is reduced.

In the fourth embodiment, the number of display light guide plates is one, but may be two or more, or may be omitted. And
The number of display edge lights is adjusted accordingly.
When the light guide plate for display is omitted, the display is performed by the light guide plate for deodorization.

[0075]

As described above, the plate-type deodorizing device according to the present invention is thin and highly efficient, and uses light used for deodorizing for display, and a flat type light emitting mechanism similar to the deodorizing part. By using in combination, the device also has a function as a light emitting display device, which can be used for advertisements and various light emitting displays. Moreover, despite having a function as a light emitting display device, it is still thin. Therefore, not only indoors,
It is also suitable as a deodorizing device used in a limited space such as in a vehicle, and can be said to be of very high commercial value.

[Brief description of the drawings]

FIG. 1 is a perspective view of a plate-type deodorizing device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of a central portion of the plate-type deodorizing device.

FIG. 3 is a front view of a plate-type deodorizing device according to a second embodiment of the present invention.

FIG. 4 is a plan view of the plate-type deodorizing device.

FIG. 5 is a vertical sectional side view of the plate-type deodorizing apparatus.

FIG. 6 is a vertical sectional side view of a plate-type deodorizing apparatus according to a third embodiment of the present invention.

FIG. 7 is a vertical sectional side view of a plate-type deodorizing apparatus according to a fourth embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 base portion 11 edge light for deodorization 12 edge light for display 20 display portion 21 light guide plate for deodorization 21 ′ groove for light diffusion 22 light guide plate for display 22 ′ groove for light diffusion 23 photocatalyst layer 24 reflection member 25 colored film 29 Frame 30 Ventilation gap

Claims (8)

[Claims] 1. A light guide plate having a surface subjected to a treatment for diffusing light incident from an end face and coated on a surface with a photocatalyst which reacts to ultraviolet light to deodorize, and a light guide plate facing an end face of the light guide plate. Provided in the light guide plate from the end face thereof, and an edge light for receiving light including a wavelength in the ultraviolet region, and configured to perform light-emitting display using scattered light emitted from the surface of the light guide plate. A plate type deodorizing device which also serves as a light emitting display device. 2. The edge light according to claim 1, wherein the edge light comprises a combination of an edge light for deodorization that mainly emits ultraviolet light and an edge light for display that mainly emits visible light. A plate-type deodorizing device that also functions as a light-emitting display device. 3. The display light guide plate according to claim 1, wherein the light guide plate is combined with a display light guide plate arranged with a ventilation gap on the side of the surface coated with the photocatalyst. A plate-type deodorizing device also serving as the light-emitting display device according to 1. 4. A light guide plate for deodorization, wherein the surface is subjected to a treatment for diffusing light incident from an end face, and the surface is coated with a photocatalyst which reacts to ultraviolet light to deodorize, and a light guide for deodorization. An edge light for deodorization, which is provided to face an end surface of the light plate, and mainly enters ultraviolet light from the end surface into the light guide plate, and a light that is disposed on one surface side of the light guide plate for deodorization, and is incident from the end surface. A light guide plate for display whose surface is subjected to a process for diffusing light, and a display light guide plate which is provided to face an end face of the light guide plate for display, and from which the light guide plate mainly receives visible light. A plate-type deodorizing device also serving as a light-emitting display device, comprising: 5. The plate also serving as a light emitting display device according to claim 4, wherein the light guide plate for display is arranged on a surface of the light guide plate for deodorization which is not coated with a photocatalyst. Type deodorizer. 6. A plate-type deodorizer also serving as a light-emitting display device according to claim 5, wherein a planar reflecting member is interposed between the light guide plate for deodorization and the light guide plate for display. apparatus. 7. The display light guide plate according to claim 4, wherein the light guide plate for deodorization is disposed with a ventilation gap on the side of the surface on which the photocatalyst is coated of the light guide plate for deodorization. A plate-type deodorizing device that also functions as a light-emitting display device. 8. The light-emitting display device according to claim 7, wherein the light guide plate for deodorization has a configuration in which a planar reflecting member is attached to a surface not covered with a photocatalyst. Plate type deodorizer.