JPH07160202A - Structure for preventing reflection of illumination light of display device - Google Patents

Abstract

PURPOSE:To provide a structure for preventing reflection of the illumination light of a display device which prevents the incidence and reflection of the illumination light on a display means by mounting a detaining part freely expandably and contractably at the front surface of the display device and mounting a filter to properly reflect the illumination light at the front surface of this detaining part. CONSTITUTION:This structure for preventing the reflection of the illumination light of the CRT display device 1 is constituted to illuminate the inside of a room by the illumination light from an illuminating device and prevents the incidence of the illumination light reflected from a display screen 1a arranged in the room on a visual field. The detaining part 9 is mounted freely expandably and contractably at the front surface of the CRT display device 1 and the filter 8 to properly reflect the illumination light is mounted at the front surface of this detaining part 9. The illumination light is reflected by the filter 8 and the projection thereof into the CRT display device 1 is averted when the mounting angle of the filter 8 is changed by adjusting the detaining part 9. The admission of the illumination light to the operator's visual field is thus lessened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for preventing illumination light from entering and reflecting on a display screen of a display means such as a CRT arranged on a control panel or the like in buildings such as electric power and general industries. The present invention relates to an illumination light antireflection structure.

[0002]

2. Description of the Related Art Generally, a C such as a control panel installed in a building
As for the RT, as shown in FIG. 15, a CRT 1 is mounted on a control panel (hereinafter referred to as a disk) 2 or the like, and is disposed inside a building. In the building, the lighting 3 is arranged on the ceiling 4 to secure the illuminance in the room. An operator 7 sitting on a chair 6 on the floor 5 is located in front of the disc 2 and is operating while watching the screen of the CRT 1.

[0003]

However, as shown in FIG.
When the operator 7 looks at the screen of the CRT 1 mounted on the disc 2 as shown in FIG.
Due to the relationship between the screen of T1 and the position and angle of the eyes of the operator 7, the light of the illumination 3 is reflected on the screen of the CRT 1 and reflected to enter the field of view of the operator 7, making the screen of the CRT 1 difficult to see. is there.

As a solution to this problem, measures such as changing the positions where the illumination 3 and the disk 2 are arranged and installing a hood and a filter in front of the screen of the CRT 1 have been taken. Since the position of the eyes was different depending on 7, the satisfactory result could not be obtained.

Therefore, an object of the present invention is to provide an illumination light reflection preventing structure for a display device which prevents the illumination light from entering and reflecting on the display means.

[0006]

According to a first aspect of the present invention, illumination light from an illumination device illuminates a room, and the illumination light reflected from a display screen arranged in the room enters a field of view. In an illumination light reflection preventing structure for a display device for preventing such a situation, a locking portion is attached to the front surface of the display device in a stretchable manner, and a filter for appropriately reflecting the illumination light is attached to the front surface of the locking portion. It is a thing.

A second aspect of the present invention is a display device for illuminating a room with illumination light from an illumination device and preventing the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure for preventing the illumination light reflection, a hood is fixed so as to surround the display screen of the display device, is slidable in the front-back direction on the upper part of the hood, and the mounting angle can be adjusted in the vertical direction. Is attached.

According to a third aspect of the present invention, a display device is provided for illuminating the room with illumination light from the illumination device and preventing the illumination light reflected from the display screen arranged in the room from entering the visual field. In the illumination light reflection preventing structure, the hood is fixed to the front surface of the display device, and the filter mounting frame is rotatably supported with respect to the hood.
Further, the filter is rotatably supported on the filter mounting frame.

According to a fourth aspect of the present invention, a display device is provided for illuminating the room with the illumination light from the lighting device and preventing the illumination light reflected from the display screen arranged in the room from entering the visual field. In the structure for preventing reflection of illumination light, the illumination light passed through a non-reflection filter having a function of diffusing light is used as the illumination light.

A fifth aspect of the present invention is a display device for illuminating a room with illumination light from an illumination device and preventing the illumination light reflected from a display screen arranged in the room from entering a visual field. In the illumination light antireflection structure, the illumination light passed through a variable coloring filter is used as the illumination light.

[0011]

According to the invention of claim 1, when the mounting angle of the filter is changed by adjusting the locking portion, the illumination light is prevented from being reflected by the filter and reflected on the display device, and the illumination light is reflected to the field of view of the operator. It is not rare that

According to the second aspect of the present invention, the eaves provided on the upper part of the hood can be moved back and forth, the attachment angle of the eaves can be changed, and the light entering the display screen of the display device can be blocked.

According to the third aspect of the invention, the filter angle can be changed in the left-right direction and the filter angle can be changed in the up-down direction according to the illumination light. This avoids the illumination light from reflecting the display screen of the display device and entering the operator's visual field.

According to the invention of claim 4, the illumination light is softened by passing it through a non-reflection filter. For this reason, strong light that is reflected on the display screen of the display device does not enter.

According to a fifth aspect of the present invention, the illuminating light entering the display screen of the display device is softened by the variable coloring filter, the illuminating light is no longer strongly reflected on the display screen, and is seen by the operator's visual field. The trouble is gone.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a CRT showing a first embodiment of the present invention.
2 is a partial vertical cross-sectional view of FIG. 1.

In the figure, 1 is a CRT which is housed in the disk 2 shown in FIG. 15 and has a display screen 1a on the front surface, 8 is a filter mounted in front of the display screen 1a of the CRT 1, and 9 is a filter 8 on the front surface of the CRT 1. It is a locking part that is attached so that it can expand and contract, and blocks outside light.

The locking portion 9 has, for example, a bellows structure, and is configured so that the mounting angle of the front surface of the filter 8 with respect to the front surface of the CRT 1 can be freely changed.

The filter 8 prevents the illumination 3 from being reflected by the display screen 1a of the CRT 1 and entering the visual field of the operator 7.

The operator 7 displays the display screen 1 of the CRT 1 through the filter 8 of the CRT 1 arranged as shown in FIG.
Operate while watching a. At this time, the light of the illumination 3 arranged on the ceiling 4 or the like is reflected on the display screen 1a of the CRT 1 and enters the visual field of the operator 7, so that the display of the CRT 1 may be very difficult to see.

In such a case, if the mounting angle of the filter 8 is changed by adjusting the locking portion 9, the light of the illumination 3 is prevented from being reflected by the filter 8 and reflected on the CRT 1, and the visual field of the operator 7 is avoided. The light of the illumination 3 often enters. Further, when the light of the illumination 3 reflected by the filter 8 enters the visual field of the operator 7, if the mounting angle of the filter 8 is changed, light is less likely to enter the eyes of the operator 7, and the display screen 1a of the CRT 1 is reduced. Is easier to see.

As described above, according to the first embodiment, when the locking portion is adjusted to change the filter mounting angle, the illumination light is prevented from being reflected by the filter and reflected on the display device. The effect that illumination light is less likely to enter the visual field is obtained.

FIG. 3 is a CRT showing a second embodiment of the present invention.
FIG. 4 is a front view of the display device, and FIG. 4 is a partial vertical sectional view of FIG.

In the figure, 10 is a CRT formed on the disk 2.
The hood is attached so as to cover the outer frame of the rectangular opening corresponding to the display screen 1a of No. 1, and the eaves 11 covers the upper part of the hood 10.

As shown in FIG. 5, the eaves 11 has a slide hole 11a for sliding the eaves 11 back and forth.
Is formed in the front-back direction, and the eaves 11 is fixed to a fixing hole 12b formed in the eaves support portion 12 by a fastening member 13 penetrating the slide hole 11a from above. Further, the eaves support portion 12 is formed with a bent portion 12c having shaft holes 12a at both ends, and the bent portion 12c is the bent portion 12c.
The shaft holes 12a are formed in the mounting holes formed at opposite positions on both ends of the
The rotary shaft 15 is rotatably inserted.

According to this configuration, the display screen 1 of the CRT 1
When the light of the illumination 3 is inserted into a, the tightening member 13 is loosened and the eaves 11 is appropriately pulled forward, so that the eaves 11 slides and moves forward. Further, by pushing the eaves 11 downward, the eaves 11 can be directed downward around the rotary shaft 15.

As described above, the eaves 11 provided on the upper portion of the hood 10 can be moved back and forth, the mounting angle of the eaves 11 can be changed, and the light entering the display screen 1a of the CRT 1 can be blocked.

FIG. 6 is a partial view showing an example of the angle adjusting mechanism 14 for adjusting the mounting angle of the eaves.

The angle adjusting mechanism 14 shown in FIG.
It is composed of an eaves 11 having a gear 14a rotatably pivoted on both side surfaces of 0 and a mountain-shaped leaf spring 14b fixed, and the tip of the mountain-shaped leaf spring 14b meshes with the teeth of the gear 14a. It is fixed by the elastic force of the spring 14b. When changing the angle of the eaves 11 up and down, if the eaves 11 is moved in the direction of the arrow in the figure, the attachment angle of the eaves 11 is adjusted around the gear 14a.

FIG. 7 is a view showing another embodiment of the angle adjusting mechanism 14 from above. FIG. 7 shows the gear 14a of FIG.
And a sphere 14e between the hemispherical recess 14c formed in the hood 10 and the hemispherical recess 14d formed in the eaves 11 instead of the chevron leaf spring 14b. The angle of the eaves 11 can be adjusted in the vertical direction with respect to 10.

As described above, according to the second embodiment, the eaves provided on the upper part of the hood can be moved back and forth, the attachment angle of the eaves can be changed, and the effect of blocking the light entering the display screen of the display device can be obtained. .

FIG. 8 is a partial vertical sectional view of a CRT display device showing a third embodiment of the present invention.

In the figure, reference numeral 16 denotes a gap concealing portion which is provided on the entire outer periphery between the filter 8 and the hood 10 and is made of a stretchable and light-shielding material, and the other portions are denoted by the reference numerals of the first embodiment and the first embodiment. This is the same as described in the second embodiment.

With this configuration, the reflection of light on the display screen 1a of the CRT 1 can be escaped from the viewing angle of the operator 7 by arbitrarily adjusting the mounting angle of the filter 8. Also, C
The light entering the display screen 1a of the RT1 can be blocked by adjusting the length and the mounting angle of the eaves 11 provided on the upper portion of the hood 10 as desired.

FIG. 9 is a CRT showing a fourth embodiment of the present invention.
FIG. 10 is a partially enlarged vertical sectional view of the display device.

In the figure, 17 is a filter mounting frame for mounting the filter 8. The filter 8 and the filter mounting frame 17 are rotatably mounted on the left and right ends by a rotary shaft 15, while the filter mounting frame 17 and the hood 10 are mounted. And are vertically rotatably mounted by a rotary shaft 15.

With this configuration, it is possible to change the angle of the filter 8 in the horizontal direction and the angle of the filter 8 in the vertical direction according to the light of the illumination 3. This prevents the light of the illumination 3 from reflecting on the display screen 1a of the CRT 1 and entering the visual field of the operator 7.

As described above, according to the fourth embodiment, it is possible to change the filter angle in the horizontal direction and the filter angle in the vertical direction according to the illumination light. This avoids the illumination light from reflecting the display screen of the display device and entering the operator's visual field.

FIG. 11 is a vertical sectional view of an illuminating device showing a fifth embodiment of the present invention.

In the figure, the louver 19 covers the illumination 3 arranged on the ceiling 4, and 19 is a non-reflection filter which is provided with a light diffusing surface 19a outside the louver 18 to enable light diffusion.

With the above configuration, the display screen 1 of the CRT 1
The light of the illumination 3 that is inserted into a is diffused inside the antireflection filter 19, so the light that has passed through the antireflection filter 19 is not strong light but softened light. Therefore, the CRT
The strong light that is reflected on the display screen 1a of No. 1 does not enter. In addition, the light of the illumination 3 is reflected to other facilities installed in the building and the light is less likely to enter the display screen 1a.

Even if a variable colored filter 20 is provided instead of the antireflection filter 19 as shown in FIG.
It can be implemented in the same manner as in the fifth embodiment. Variable coloring filter 2
When 0 is applied and the voltage is changed, the transparency of the light of the illumination 3 is changed, and the light of the illumination 3 can be colored or the coloring can be erased.

With this configuration, the light of the illumination 3 becomes soft light, which enters the display screen 1a of the CRT 1 and is no longer strongly reflected.

As described above, according to the fifth embodiment, the illumination light is softened by passing it through the non-reflection filter, and strong light that is reflected by the display screen of the display device does not enter.

FIG. 13 is a vertical sectional view of an illuminating device showing a sixth embodiment of the present invention.

In the figure, reference numeral 21 designates a non-reflective filter which is provided downwardly from the ceiling 4 so as to surround the louver 18 and the illumination 3 arranged on the ceiling 4, and a light diffusing surface 21 a is provided inside the non-reflective filter 21. Is forming.

First, by providing the non-reflection filter 21 forming the light diffusion surface 21a around the illumination 3 in the shape of a blind,
The light that has passed through the antireflection filter 21 is softened to be CR.
The light of the illumination 3 plugged into the display screen 1a of T1 is softened.
As a result, the light of the illumination 3 that is inserted into the display screen 1a of the CRT 1 is no longer strongly reflected by the display screen 1a, and is not difficult to see in the field of view of the operator 7.
In addition, since it is surrounded by the antireflection filter 21, the CRT 1
Strong light does not enter the display screen 1a. Also,
It is possible to prevent the light of the illumination 3 from being reflected on other equipment installed in the building and entering the light into the display screen 1a of the CRT 1.

As described above, according to the sixth embodiment, by providing the interdigital anti-reflection filter, the light passing through the anti-reflection filter is softened and the light of the illumination which is inserted into the display screen to the display device is softened. Since the light of the illumination that is inserted into the display screen is not the light that strongly reflects on the display screen, it is not difficult for the operator to see it and see it.

In the sixth embodiment shown in FIG. 14, a variable colored filter 22 which can be colored / erased by a voltage and whose transparency can be changed instead of the antireflection filter 21 is slid downward from the ceiling 4 so as to surround the louver 18. Even if it is provided in a shape, it can be implemented in the same manner as in the fifth embodiment.

[0051]

As described above, according to the present invention, the illumination light entering the display screen of the display device is blocked so that the illumination light is less likely to enter the visual field of the operator. Therefore, the problem that the display screen of the display device is difficult to see due to the illumination light is solved.

Further, since the light of the illumination that is inserted into the display screen of the display device is softened so that the light of the illumination is not the light that strongly reflects on the display screen, the display of the display device is displayed even when the operator's visual field is entered. The screen is not difficult to see.

[Brief description of drawings]

FIG. 1 is a perspective view of a CRT display device showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is a front view of a CRT display device showing a second embodiment of the present invention.

FIG. 4 is a partial vertical cross-sectional view of FIG.

FIG. 5 is an enlarged perspective view of the hood and the eaves of FIG.

6 is a partial explanatory view showing an example of the hood and eaves angle adjusting mechanism of FIG. 3. FIG.

FIG. 7 is a partial explanatory diagram showing another example of FIG.

FIG. 8 is a vertical sectional view of a CRT display device showing a third embodiment of the present invention.

FIG. 9 is a front view of a CRT display device showing a fourth embodiment of the present invention.

10 is a partially enlarged vertical sectional view of FIG.

FIG. 11 is a vertical sectional view of an illumination device showing a fifth embodiment of the present invention.

12 is a vertical cross-sectional view of a lighting device showing another embodiment of FIG.

FIG. 13 is a vertical sectional view of an illumination device showing a sixth embodiment of the present invention.

14 is a vertical cross-sectional view of a lighting device showing another embodiment of FIG.

FIG. 15 is an explanatory diagram showing a building in which a conventional CRT is installed.

[Explanation of symbols]

 1 CRT 1a Display screen 3 Illumination 4 Ceiling 7 Operator 8 Filter 9 Locking part 10 Hood 11 Eaves 12 Eaves supporting part 13 Tightening member 14 Angle adjusting mechanism 15 Rotating shaft 16 Gap hiding part 17 Filter mounting frame 18 Louver 19,21 Anti-reflection filter 20,22 Variable colored filter

Claims (5)

[Claims] 1. An illumination light reflection prevention device for a display device, which illuminates a room with illumination light from an illumination device and prevents the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure, an engaging portion is attached to the front surface of the display device so as to extend and contract, and a filter for appropriately reflecting the illumination light is attached to the front surface of the engaging portion, and an illumination light reflection preventing structure for a display device. . 2. An illumination light reflection prevention of a display device, which illuminates a room with illumination light from an illumination device and prevents the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure, the hood is fixed so as to surround the display screen of the display device, and the hood is slidable in the front-back direction,
Further, an illumination light reflection preventing structure for a display device, characterized in that an eaves is attached which allows an attachment angle to be adjusted in a vertical direction. 3. An illumination light reflection prevention of a display device for illuminating a room with illumination light from an illumination device and preventing the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure, a hood is fixed to the front surface of the display device, a filter mounting frame is rotatably supported on the hood, and further, a filter is rotatably supported on the filter mounting frame. A structure for preventing reflection of illumination light of a display device. 4. An illumination light reflection prevention of a display device for illuminating a room with illumination light from an illumination device and preventing the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure, the illumination light antireflection structure for a display device is characterized in that the illumination light passed through a non-reflection filter having a function of diffusing as the illumination light for the display device is used. 5. An illumination light reflection prevention of a display device for illuminating a room with illumination light from an illumination device and preventing the illumination light reflected from a display screen arranged in the room from entering a visual field. In the structure, the illumination light that has passed through a variable coloring filter is used as the illumination light of the display device, and an illumination light antireflection structure for the display device is provided.