JPH0572981A - Indicator lamp apparatus - Google Patents

Abstract

PURPOSE:To obtain the indicator lamp apparatus which is so well designed that a display is suspended in the air by providing a surface type transparent photoconductor which receives light from one or plural light sources and a light diffuse reflecting part which diffuses and reflects the light of the light sources passed through the transparent photoconductor. CONSTITUTION:The photoconductor 21 is fixed to a lamp house so that its end surface 11 is parallel to a fluorescent lamp 9. The extension part 21a of this photoconductor 21, the light diffuse reflecting part 12, and a display plate 13 constitute a display body 14. The light diffuse reflection part 12 on which white ink, etc., is printed occupies the extension part 21a of the photoconductor more and more with the distance from the fluorescent lamp 9. Namely, the display plate 13 is uniformly brightened by making the quantity of light reflection larger and larger with the distance from the fluorescent lamp 13. At the part of the photoconductor 21, emitted luminous flux from the fluorescent lamp 9 travels while reflected nearly totally on the border surface of air, so the light never leaks out of the photoconductor 21. Then the photoconductor 21 is transparent, so it seems that only the display part is suspended in the air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display lamp device for visually illuminating various signs and guide signs of stores and hotels from the back side.

[0002]

2. Description of the Related Art Two conventional examples are shown below. FIG. 11 is a perspective view showing a first conventional example of an induction indicator light, and FIG. 12 is a sectional view thereof. In the figure, reference numeral 1 is a main body, a device 2 for lighting a light source is housed inside, and a ceiling is installed by insert bolts 3. It is installed in the board 4. An electric wire 6 for supplying electric power to the light source passes through the hanging pipe 5, and is connected to a lamp house 7 by a nut 8. A fluorescent lamp 9 is housed inside the lamp house 7, and the light guide plate 1
0 is fixed to the lamp house 7 so that its end face 11 is parallel to the fluorescent lamp 19. A light diffusing and reflecting portion 12 is formed on one plane of the light guide plate 10 by a method such as silk printing or sandblasting, and a display plate 13 is mounted on the opposite side. The light guide plate 10, the light diffusing and reflecting portion 12, and the display plate 13 constitute a display body 14. Hanging pipe 5
The lamp house 7 to which the light guide plate 10 is fixed is assembled as described above and locked by the locking member 15 inside the main body 1. Reference numeral 16 is a decorative plate for hiding the inside of the main body.

FIG. 13 is a perspective view showing a second conventional example of the guide light, and FIG. 14 is a sectional view thereof. In the figure, 1 to 13 are the same as or corresponding to the first conventional example. In this example, the fluorescent lamp 9 is housed inside the main body 1 which is housed in the ceiling plate. Further, the display body 14 is coupled to the light guide plate fixing member 19 which also serves as a decorative plate, and is locked to the main body 1 by the locking piece 20.

Next, the operation for converting the linear light source of the fluorescent lamp 9 into a surface emitting light source will be described with reference to FIG. The radiant flux of the fluorescent lamp 9 enters from the end face 11 and is taken into the light guide plate 10. The light guide plate 10 is a transparent material that absorbs less light and has a refractive index larger than that of air. The radiant flux taken into the light guide plate 10 is totally reflected at the boundary surfaces 17, 18 of the light guide plate 10 with the air, and the radiant flux having an incident angle equal to or greater than the critical angle is totally reflected and travels in the facing direction of the end face 11. The radiant flux entering the light diffusing / reflecting portion 12 is not a boundary surface with air and is therefore converted into diffuse reflected light irrespective of the incident angle, and the display plate 13 is illuminated from the back direction to illuminate the display plate 13. Note that FIG. 16 shows the shape of the light diffusing and reflecting portion 12.

[0005]

Since the indicator lamp in the first conventional example is constructed using the hanging pipe 5,
There is a problem that it is unattractive and requires the work to pass the electric wire 6 through the hanging pipe 5, which puts a heavy burden on the worker in the present age when manpower is insufficient.

On the other hand, in the second conventional example, since the hanging pipe 5 is not provided, the appearance is good and the burden on the construction worker is small. However, since the display body 13 is directly lowered from the ceiling, there is no visual effect that the display is seen away from the ceiling unlike the first conventional example.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to obtain an indicator lamp device having an excellent design which makes the display appear to float in the air. Another object of the present invention is to obtain a relatively large indicator light device or an indicator light device having a bright display portion, which is excellent in design.

[0008]

The indicator lamp apparatus according to the present invention comprises one or more light sources, a planar transparent light guide for receiving light from the light sources, and light from the light sources passing through the transparent light guide. And a display unit having a light diffusive reflection unit for diffusing and reflecting the light and a display unit for performing a display operation by the diffuse reflection light.

In addition, a plurality of light sources, a planar transparent light guide that receives the light of the light sources, and a display that performs a display operation by the light of the light sources that have passed through the transparent light guide are provided. Was received from multiple directions around.

[0010]

Since the indicator lamp device according to the present invention is provided with the transparent light guide, the display portion looks like floating in the air.

By using a plurality of light sources and making the light from the light sources enter from a plurality of directions, a comparatively large indicator lamp device can be obtained and the display portion can be made bright.

[0012]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing this embodiment,
FIG. 2 is a sectional view thereof. In the figure, 1 to 20 are parts which are the same as or correspond to the above-mentioned conventional indicator lamp fixtures. 2
1 also functions to pass the light of the light source similarly to the light guide plate 10 of the conventional example, but in this embodiment, since it is used only in the light guide plate due to its transparency, it is distinguished from the conventional example as follows. It is called a light guide. Reference numeral 21a is an extension of the light guide 21.
Light guide extension 21a, light diffuse reflector 12 and display plate 13
And form the display body 14. A fluorescent lamp 9 is built in the main body 1 together with a device 2 for turning on a light source. FIG. 3 is a perspective view showing the shape of the light diffusing and reflecting portion 12 formed on the extension portion 21a of the light guide. Light diffuse reflector 12
Occupies a larger proportion in the extended portion 21a of the light guide as the distance from the fluorescent lamp 9 increases. This is to increase the amount of reflection of light that becomes weaker as the distance from the fluorescent lamp increases so that the display plate 13 can be uniformly illuminated. The light diffusing / reflecting portion 12 is formed by a method of printing white ink or the like on the extension portion 21a of the light guide body by silk printing, or by making the surface uneven by sandblasting.

Next, the operation for converting the linear light source of the fluorescent lamp 9 into a surface emitting light source will be described. This operation is almost the same as that of the conventional one, but in the light guide 21 portion, the radiant flux of the fluorescent lamp 9 travels while being totally reflected at the boundary surface with the air, so that light is emitted from the light guide 21. It does not leak outside. Then, the radiant flux entering the light diffusing / reflecting portion 12 is converted into diffuse reflected light irrespective of the incident angle, and the display plate 13 is illuminated from the back direction to illuminate the display plate 13.

Example 2. Although the case where the number of the fluorescent lamps 9 is one is shown in the first embodiment, a plurality of fluorescent lamps may be used. FIG. 5 shows a case where two fluorescent lamps are arranged.
In this case, the display body 14 including the display plate 13 and the light diffusing and reflecting portion 12 is provided in the center of the device. The light diffuse reflector 12 is formed so as to be dense at the center of the display body 14. Further, as shown in FIG. 6, a plurality of display plates 13 may be formed at intervals. When the two lamps are mounted in this way, a lamp house may be provided around the rectangular plane formed by the light guide body 21 and the display body 14 and suspended from the ceiling. For example, the upper fluorescent lamp is embedded in the ceiling. If the above fluorescent lamp is embedded in the floor, there will be no bad appearance due to the lamp house, and a large indicator lamp device in which the display appears to float in the air can be obtained.

Further, as shown in FIG. 7, two lamps may be provided on adjacent sides of a quadrangular plane consisting of the light guide 21 and the display 14 and the display 14 may be provided at a corner far from the lamp. In this case, by disposing the two lamps on the ceiling and the wall respectively, a display device in which the display appears to float in the air can be obtained. At this time, if the lamp is embedded in the ceiling and walls, it will look even better.

Further, FIG. 12 shows a structure in which four fluorescent lamps are arranged, and the display 14 is surrounded by a transparent light guide 21. The shape of the light diffusing and reflecting portion 12 becomes denser as it goes farther from the fluorescent lamp, as in the above-described embodiment. Display 1
4 may be provided separately in a plurality of places as shown in FIG. As a method of mounting the indicator light fixture thus configured, a lamp house may be provided on the entire circumference, and one side of the lamp house may be mounted on the building. Further, there is also one in which the entire rectangular plane formed by the light guide 21 and the display pair 14 is used as a door, four fluorescent lamps are embedded in the frame of the door, and the fluorescent lamps are turned on when the door is closed to illuminate the display board. Conceivable.

As described above, the indicator lamp apparatus using a plurality of light sources is very effective when the size of the indicator lamp apparatus or the area of the display unit to be illuminated is relatively large or when the brightness of the display section is increased. ..

Example 3. Further, the display plates 13 may be provided on both sides. In this case, as shown in the sectional view of FIG.
A display body 14 having a display plate 13 and a light diffusing / reflecting portion 12 is formed by attaching the light diffusing / reflecting portion 12 to the inside. With such a configuration, it is possible to obtain a convenient and excellent design light device in which the display can be seen from the front side and the back side of the display light device and the display can be seen floating in the air.

[0019]

Since the present invention is constructed as described above, it has the following effects.

According to the first aspect of the present invention, by providing the transparent light guide, it is possible to obtain an indicator lamp device having an excellent design, in which only the display portion appears to float in the air.

According to the second aspect of the present invention, it is possible to obtain an indicator lamp device in which the display portion appears to float in the air and is relatively large or the display portion is bright.

[Brief description of drawings]

FIG. 1 is a perspective view showing an indicator lamp device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an indicator lamp device according to Embodiment 1 of the present invention.

FIG. 3 is a perspective view showing a light diffusing and reflecting portion according to Embodiment 1 of the present invention.

FIG. 4 is a cross-sectional view showing the progress of light according to the first embodiment of the present invention.

5A and 5B are a plan view and a cross-sectional view showing a case where there are two light sources according to the second embodiment of the present invention.

6A and 6B are a plan view and a cross-sectional view showing a case where there are two light sources according to the second embodiment of the present invention.

7A and 7B are a plan view and a cross-sectional view showing a case where there are two light sources according to the second embodiment of the present invention.

8A and 8B are a plan view and a cross-sectional view showing a case where there are four light sources according to the second embodiment of the present invention.

9A and 9B are a plan view and a cross-sectional view showing a case where there are four light sources according to the second embodiment of the present invention.

FIG. 10 is a sectional view showing Embodiment 3 of the present invention.

FIG. 11 is a perspective view showing a first conventional example of an indicator lamp device.

FIG. 12 is a cross-sectional view showing a first conventional example of an indicator light fixture.

FIG. 13 is a perspective view showing a second conventional example of the indicator lamp device.

FIG. 14 is a cross-sectional view showing a second conventional example of the indicator lamp device.

FIG. 15 is a cross-sectional view showing the progression of light in a conventional indicator light fixture.

FIG. 16 is a perspective view showing a light diffusing and reflecting portion of a conventional indicator lamp device.

[Explanation of symbols]

 9 Fluorescent Lamp 10 Light Guide Plate 12 Light Diffusing and Reflecting Section 13 Display Plate 14 Display Body 21 Light Guide Body

Claims (2)

[Claims] 1. One or a plurality of light sources, a planar transparent light guide that receives light from the light sources, a light diffuse reflector that diffuses and reflects light from the light sources that has passed through the transparent light guide, and diffuse reflected light. And a display unit having a display unit that performs a display operation by the display unit, and displays the display by the display unit as if it were floating. 2. A display member, comprising: a plurality of light sources; a planar transparent light guide member that receives light from the light source; and a display section that performs a display operation by light from the light source that has passed through the transparent light guide member. The display lamp fixture is characterized in that the display of the above item appears to float and receives light from the light source from a plurality of surrounding directions.