JPH1165497A - Electrically illuminating signboard serving also as half mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electrically illuminating signboard effectively utilizing a general purpose half mirror in which the reflectivity and the transmissivity of incident light beams are properly set, by detecting a light source switching element generated on the front side of a signboard display surface. surface and transmitting the detected signals to a control section. SOLUTION: In the back surface side of a signboard display surface 4, a display content section 5 in which the contents to be displayed in a see-through type on the surface 4 are displayed and formed, is provided in a freely attachable and detachable manner and the display contents can be changed. A control section 7 which controls the switching to turn on and off a light source 6, is provided in the source 6. A sensor 8 which is connected to the section 7, is provided in the vicinity of the surface 4. The sensor 8 detects a switching element N of the source 6 generated on the front surface side of the surface 4 and transmits the detection signals to the section 7. Thus, the function as a see-through display member and a normal mirror is automatically switched and the display function in which power to call attention is excellent is obtained as the signboard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a half mirror and an electric signboard. More specifically, the present invention relates to an illuminated signboard using a half mirror formed by applying a metal film to a substrate.

[0002]

2. Description of the Related Art Conventionally, as an illuminated signboard using a half mirror, there is known an illuminated signboard provided with a metal coating on a glass substrate by a sputtering method, a vapor deposition method, an ion plating method, or the like.

In this conventional half mirror, a glass substrate is provided with a relatively low reflectance by means of a coating, and a part of incident light is reflected as reflected light. It is used for applications such as glass.

In such a conventional half mirror, the reflectance of incident light is lower and the transmittance is higher than that of a normal mirror.
Since it has the property that the reflectance of incident light is higher and the transmittance is lower than normal glass, it is halfway to function as a normal mirror or glass, so it is not used for window glass etc. of buildings Have a problem that they are hardly provided.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has a general-purpose half mirror in which the reflectance and the transmittance of incident light are appropriately set. It is an object to provide an illuminated signboard that effectively utilizes a half mirror having a unique property.

[0006]

In order to solve the above-mentioned problems, a half mirror and illuminated signboard according to the present invention is provided in claim 1.
As described in the above, a half mirror incorporated as a signboard display surface, and a display content portion of a light-transmitting material detachably provided on the back side of the signboard display surface, which is transparently displayed on the signboard display surface. An arbitrary content is drawn, a light source composed of a cold cathode fluorescent lamp installed on the back side of the display content section, a reflector installed on the back side of the light source, and turning on and off of the light source. Means comprising a control unit for switching control and a sensor connected to the control unit for detecting a light source switching element generated on the front side of the signboard display surface and transmitting a detection signal to the control unit is adopted.

[0007]

According to the above-mentioned means, according to the first aspect, the function as a normal mirror and a transparent display material can be automatically switched by the control unit and the sensor, and a display function with an excellent alertness as a signboard can be provided. Therefore, the problem of providing an illuminated signboard that effectively utilizes a half mirror having the above-described properties is solved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a half-mirror / illuminated signboard of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a half mirror according to the present invention.

In this embodiment, as shown in FIG. 1, a half mirror M having a three-layer structure of a substrate 1, a coating 2, and a protective film 3 is shown.

The substrate 1 is made of a normal glass material. However, the material is not limited to a transparent material, and may be a material mixed with a light scattering agent, a coloring agent, and the like. Alternatively, the substrate 1 may be made of an acrylic resin material. This can reduce the weight.

The coating 2 is formed of aluminum (Al). As a forming means, any known means such as a sputtering method using pure aluminum, a vapor deposition method, and an ion plating method can be used. The coating 2 is set such that the reflectance of the reflected light RH with respect to the incident light H is approximately 95% and the transmittance of the transmitted light TH is approximately 5% in substantially the entire region of visible light (wavelength is approximately 400 to 700 nm). did.

The reason for selecting aluminum as the material of the coating 2 is as follows. In other words, in order to obtain a plate material having the opposite properties as a mirror and a transmissive plate such as an electric signboard, the reflectance and the transmissivity should be approximately 95% and approximately 5%, respectively.
%, And furthermore, a material having high colorless transparency is most suitable. If materials other than aluminum are used, there are many less problems to be overcome in terms of manufacturability, durability, etc.As a result of repeated experiments, it has been found that aluminum is optimal in the above colorless transparency. found. In addition, according to an experiment conducted by the inventor, this setting is determined by the film thickness of the film 2, but it has been confirmed that a suitable film thickness varies depending on the selection of the means for forming the film 2. .

The protective film 3 is made of quartz (silicon dioxide SiO 2).
2) Select The protective film is formed because aluminum is selected as the coating 2 as described above, and thus it is preferable to form the protective film. That is, if another material is selected as the coating 2, a material having excellent durability can be easily manufactured without the need for a protective film. However, since aluminum is selected, it is easy to produce depending on environmental conditions without the protective film. This is because oxidation may occur. This protective film 3 is formed by forming quartz on the film 2 by a conventional method, but the thinner the film, the better, and it should be at least 100 Å or less. Otherwise, both the reflectance and the transmittance cannot be achieved simultaneously. If the protective film 3 is formed, physical damage such as peeling of the coating 2 and chemical damage such as oxidation of the coating 2 can be effectively prevented.

The half mirror M having such a three-layer structure has a reflectivity considerably higher than that of a conventional half mirror, and functions sufficiently as a normal mirror. When the light transmittance is 5%, appropriate display contents can be transparently displayed by projecting light, and also function as a transparent display material or the like. Therefore, it can be used in a fairly wide range of fields.

Next, a description will be given of an embodiment of a half-mirror / illuminated signboard of the present invention shown in FIGS.

In this embodiment, the above-described half mirror M is shown as a signboard display surface 4 on which display contents such as advertisements are displayed in a see-through manner.

On the back side of the signboard display surface 4, the signboard display surface 4
The display contents section 5 on which the contents to be displayed in a transparent manner is formed is provided detachably, so that the display contents can be changed. The display content portion 5 is formed of a light-transmitting material such as a transparent or translucent synthetic resin film or white or thin colored paper.

A cold cathode fluorescent lamp,
A light source 6 including any of ordinary fluorescent lamps and super-luminous light emitting diodes used at home is installed. Then, a reflection plate 9 is provided on the back side of the light source 6. When a material having a relatively low ignition point is used, such as when the display content portion 5 is a synthetic resin film or when the substrate 1 is an acrylic resin, it is necessary to avoid the danger of fire. The lights are particularly good. In addition, the reflector 9 provided on the back side of the light source 6 does not generate heat and contributes to increasing the luminance, which is also effective in avoiding fire.

The light source 6 is provided with a control section 7 for controlling the light source 6 to be turned on and off. The configuration of the control unit 7 is determined by the mode of the switching control. That is, if the light source 6 is simply selectively controlled to be turned on and off, a simple relay circuit configuration is sufficient, and the control is performed such that the light source 6 is switched on and off after several blinks. If so, it is necessary to configure a CPU capable of setting the control mode.

A sensor 8 connected to the control unit 7 is provided near the signboard display surface 4. The sensor 8 detects a switching element N of the light source 6 generated on the front side of the signboard display surface 4 and transmits a detection signal to the control unit 7. The switching element N can be freely selected from among humans, vehicles, temperature, humidity, and the like.
, The structure and performance of the sensor 8 are selected.

According to this embodiment, for example, when a person is selected as the element N and the person is at a certain distance from the sensor 8 (the signboard display surface 4), the light source 6 is turned off and the signboard is turned off. The display surface 4 functions as a normal mirror,
When a human approaches the sensor 8 within a certain distance, the light source 6 is turned on to display the display content of the display content unit 5 on the signboard display surface 4.
Can be displayed in perspective. At this time, the display content section 5
If the display content is an advertisement, the light source 6 is turned off when no human is nearby, and the light source 6 is turned on only when the human is nearby to save energy. When the human approaches, the advertisement content is displayed suddenly. You will be alerted. Conversely, when a human is separated from the sensor 8 by a certain distance,
The light source 6 is turned on to display the display content of the display content unit 5 on the signboard display surface 4 in a see-through manner. When a human approaches the sensor 8 within a certain distance, the light source 6 is turned off to display the signboard display surface 4 normally. It can be used as a mirror for eyeglasses and earrings. As for the detection of a human, an image, foot sounds, body temperature, and the like of a human can be detected by selecting the sensor 8.

In addition, the switching element N can be set to various types to be used for various displays other than advertisements.

[0024]

As described above, in the half mirror / illuminated signboard according to the present invention, the functions as a normal mirror and a transparent display material can be automatically switched by the control unit and the sensor, and the attention as a signboard is raised. There is an effect that an excellent display function can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a half mirror according to the present invention.

FIG. 2 is a side view showing an embodiment of a half-mirror / illuminated signboard according to the present invention.

FIG. 3 is a side view showing the display operation state of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Coating 4 Signboard display surface 5 Display content part 6 Light source 7 Control part 8 Sensor H Incident light RH Reflected light TH Transmitted light M Half mirror

Claims (1)

[Claims] 1. A half mirror incorporated as a signboard display surface, and a display content portion of a light-transmitting material detachably provided on the back side of the signboard display surface, the display content portion being transparently displayed on the signboard display surface. , A light source composed of a cold cathode fluorescent lamp installed on the back side of the display content portion, a reflector installed on the back side of the light source, and switching on and off of the light source A half-mirror / illuminated signboard comprising: a control unit for controlling; and a sensor connected to the control unit for detecting a light source switching element generated on the front side of the signboard display surface and transmitting a detection signal to the control unit.