JPH0566679U - Advertising billboard equipment - Google Patents

Abstract

(57) [Abstract] [Problem] To provide an advertising signboard device which can increase the illuminance on the surface of a transparent member without displaying a lamp image on the transparent member for displaying advertisement. [Structure] In a box-shaped frame A, straight tube fluorescent lamps B are arranged in parallel at intervals, a transparent member for advertisement display a is arranged in front of the lamp row, and on the rear side of each lamp. In an advertising signboard device provided with a reflector C, the reflector C is
Reflects the light emitted behind the lamp diagonally left and right,
A first reflector c ₁ projecting in a V shape toward the left and right rear of the lamp so as to irradiate a wide band including the center band between the lamps of the translucent member, and the first reflector c ₁ is provided at each end of the reflector and A second reflector c ₂ which projects toward the front from the end portion, reflects light emitted obliquely rearward of the lamp, and irradiates a wide band mainly including the center band between the lamps of the translucent member;
The first reflection plate c ₁ and the second reflection plate c ₂ are constituted by an arc surface reflection portion c ₃ which is connected by an arc surface. By using the above reflector, it is possible to construct a thin signboard that has no lamp image and has an effect of increasing illuminance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an advertising signboard device having a built-in illumination lamp, and mainly relates to improvement of a large-sized advertising signboard device for wall surfaces.

[0002]

[Prior Art]

 Conventionally, as a large advertising billboard device with built-in lighting lamps, a large number of straight tube fluorescent lamps were arranged in parallel in a box-shaped frame, and a transparent member for advertising display (composite) was placed in front of the lamp row. An advertising sign device configured by arranging a resin molding plate or a synthetic resin sheet containing a woven cloth is widely used. In particular, in this type of advertising sign device, the following points are problematic with regard to the lamp interval and the distance between the lamp and the translucent member for advertising display which is the irradiation surface.

(1) When the lamp is brought closer to the translucent member, which is the irradiation surface, in order to increase the illuminance (brightness), a lamp image (difference in light and shade) is generated, so that the lamp intervals are evenly distributed. To maintain a good brightness. In this case, the number of lamps increases. (2) When the lamp is moved away from the irradiation surface, the lamp image disappears but the illuminance decreases. In this case, the lamp interval can be widened. (3) However, in the advertising billboard, since the brightness of the translucent member for display is prioritized, a means for increasing the number of lamps is taken. In this case, the lamp image disappears, but a significant increase in power consumption is unavoidable.

In consideration of the above problem, in the conventional large-sized advertising sign device, the distance between the fluorescent lamp and the translucent member is set to about 30 cm, and the lamp interval is also set to 30 cm. Even with the configuration, the lamp image has not been completely resolved. One of the means for solving the above-mentioned problems is to use a reflector. However, the use of reflectors makes it easier to increase the illuminance, but at the same time creates a contradictory situation in which the lamp image is more intense, and therefore there are problems in its use.

Therefore, the present inventor has conducted various research and experiments on the above advertising sign device, and as a result, developed an advertising sign device that can erase a lamp image while taking advantage of the advantage of the reflector, and applied it to a practical application. Proposed in 3-85857. 5 to 8 show an example of the advertising signboard device. In the figure, A is a box-shaped frame forming the advertising sign device, a is a translucent member for advertisement display made of a vinyl chloride sheet with a woven cloth attached to the front surface of the box-shaped frame, and B is a direct line. A tubular fluorescent lamp, C is a reflector arranged on the rear side of each lamp.

The reflector C reflects the light emitted to the back of the lamp obliquely to the left and right, and directs it to the left and right of the lamp so as to illuminate a wide band including the central band between the lamps of the translucent member a. And a first reflecting plate c ₁ projecting in a V-shape and the tip of the V-shaped first reflecting plate are bent and projected forward, respectively, to reflect light radiated obliquely rearward of the lamp, and a translucent member. The second reflector c ₂ which irradiates a wide band mainly including the central band between the lamps.

According to the above configuration, the first reflector plate and the second reflector plate jointly illuminate the central zone between the lamps having the lowest illuminance of the translucent member for advertisement display. The illumination difference between the band and the central band between the lamps is averaged and the lamp image is erased. Moreover, since the light reflected by adjacent reflectors can be overlapped with each other and applied to the translucent member, the illuminance on the entire translucent surface can be significantly increased, resulting in a reduction in the number of lamps used and power consumption. A great saving effect of consumption can be obtained.

[0008]

[Problems to be solved by the device]

According to the configuration of the advertising sign device, the angle θ ₁ formed by the V-shaped first reflection plate c ₁ forming the reflector, and the second reflection plate c ₂ with respect to the _first reflection plate c ₁ By setting the overhang angle θ ₂ and the effective reflection length of each reflector to appropriate values, the distance between the translucent member and the lamp is greatly reduced, for example, 12 to 15 cm. Can be configured. This thin advertising sign device is particularly suitable for installation in places where the depth of the noticeboard cannot be sufficiently wide, such as the platform of a station or aisles, and its practical value is great.

However, in the above-mentioned thin advertising sign device, although the problem of the lamp image is solved, the inconvenient problem is caused by bringing the translucent member close to the lamp. It does not occur when the translucent member is spaced a predetermined distance from the lamp, but when the translucent member is placed close to the lamp, it is located near the bending line between the first and second reflectors. A band-shaped dark portion (hereinafter referred to as a dark line) is generated on the surface of the corresponding translucent member due to the difference in illuminance, which causes an undesirable light unevenness on the advertisement display surface.

The present inventor has investigated the cause of the dark line based on various experiments. As a result, as shown in FIG. 7, the first reflector c ₁ is the second reflector. the reflected light in the plate portion M of small width for joining and c ₂ is absorbed by the second reflector c _2, confirmed that appear by the amount of light reflected to the transparent surface portion m that corresponds to the absorption portion is reduced Was done. FIG. 8 is a schematic view showing the state.

[0011]

[The purpose of the device]

 The present invention has been made in order to solve the above-mentioned problems, and provides an advertisement signboard device that does not cause the above-mentioned dark line in the translucent member even when the translucent member is arranged close to the lamp. It is intended to be provided.

[0012]

[Means for Solving the Problems]

 According to the present invention, a large number of straight tube discharge lamps are arranged in parallel at intervals, a translucent member for displaying advertisements is arranged in front of the lamp row, and a reflector is provided behind each lamp. In the signboard device, the reflector is directed to the left and right rear of the lamp so that the light emitted to the back of the lamp is reflected obliquely to the left and right to illuminate a wide band including the center band between the lamps of the translucent member. V-shaped first reflecting plate and the V-shaped first reflecting plate at both ends of the V-shaped first reflecting plate, projecting forward from that end and reflecting the light radiated backward from the lamp slope. And a second reflector for illuminating a wide band mainly in the central zone between the lamps of the translucent member, and an arc surface reflection part connecting the first reflector and the second reflector with an arc surface. Is the gist.

[0013]

[Action]

 In the advertising sign device having the above-described configuration, the V-shaped first reflecting plate and the second reflecting plate projecting forward from the tip thereof are connected by the arc-shaped reflecting portion, so that the arc-shaped reflection is performed. In the section, the light from the lamp is not absorbed and is diffused and reflected in a stepless manner to illuminate the light-transmitting material surface, and the light reflected by the second reflector of the adjacent reflector overlaps the illuminated surface. Since it is shot, the dark line as described above does not occur.

[0014]

【Example】

1 and 2 show an embodiment of the present invention. In the drawings, the same members as those described above are designated by the same reference numerals. That is, A is a box-shaped frame forming the advertising signboard device, a is a translucent member for advertising display, B is a straight tube fluorescent lamp, and C'is a book arranged behind each lamp. It is a devised reflector. In the reflector C, a V-shaped first reflection plate c ₁ and a second reflection plate c ₂ extending from the tip side toward the front are connected by an arc surface reflection part c ₃ having a radius of curvature R. It has a different structure.

In the above structure, the light reflected by the V-shaped first reflection plate c ₁ and the second reflection plate c ₂ illuminates the translucent member surface at an irradiation angle substantially similar to that shown in FIG. The arc surface reflection portion c ₃ reflects the light received from the lamp in a stepless manner and irradiates the light transmitting member surface. As a result, as shown in FIG. 3, the dark line generated on the translucent member surface by the bent portion (joint point) of the first and second reflection plates is caused by the stepless reflection action of the arc surface reflection portion C _3. , M 'is erased by being diffused over a wide area. Moreover, since the light reflected by the second reflector c ₂ of the adjacent reflector is superimposed on the portion m ′, the difference in illuminance due to the dark line can be further reduced.

The radius of curvature R of the arc surface reflection portion c ₃ of the reflector C increases as the irradiation surface (translucent member) approaches the lamp and the angle between the first and second reflection plates increases. There is a need to. According to experiments, it is preferable that R is in the range of about 35 to 50 mm for the distance of 14 cm to 10 cm.

Next, experimental examples are shown below. Three 40 W straight tube fluorescent lamps were arranged in parallel at an interval of 31 cm at a position 11 cm apart from a translucent sheet having a width of 4 m and a length of 1.3 m. When the reflector is not used, the illuminance directly under the lamp of the translucent sheet is 1787 lux and the illuminance in the central zone between the lamps is 450 lux. The lamp image appears strongly, but the reflector is used. In that case, the illuminance right under the lamp of the translucent sheet was 300 6 lux, the illuminance in the central zone between the lamps was 2940 lux, and no lamp image was observed. Further, since the bent portions of the first and second reflectors are arcuate reflecting portions, a light-transmitting surface without light unevenness is obtained in which dark lines due to the bent portions are not generated.

[0018]

[Effect of the device]

 As described above, according to the present invention, it is possible to obtain an advertisement signboard device that does not cause a dark line due to a lamp image or a bent portion of a reflector even when the translucent member for advertisement display is brought close to the lamp. In particular, according to the present invention, it is possible to provide a thin advertising sign device suitable for installation in a place where the depth of the signboard cannot be sufficiently wide, such as a platform or a passageway of a station.

[Brief description of drawings]

FIG. 1 is a plan view of an advertising signboard device according to an embodiment of the present invention.

FIG. 2 is a plan view of a reflector.

FIG. 3 is a schematic diagram of the amount of light on the surface of a translucent member by a reflector.

FIG. 4 is a cross-sectional view of the advertising sign device of the prior invention.

FIG. 5 is a front view of a reflector of the prior invention.

FIG. 6 is a plan view of the reflector.

FIG. 7 is an explanatory diagram showing a reflection range of a reflector in the advertising sign device of the invention of the prior application.

FIG. 8 is a schematic diagram of the amount of light on the surface of a translucent member by the same reflector.

[Explanation of symbols]

A box-shaped frame a Translucent member for advertisement display B Fluorescent lamp C Reflector c ₁ 1st reflector c ₂ 2nd reflector C'Reflector of the present invention c ₃ Arc surface reflector

Claims (1)

[Scope of utility model registration request] 1. A large number of straight tube discharge lamps are arranged in parallel at intervals, a transparent member for advertisement display is arranged in front of a lamp row, and a reflector is provided behind each lamp. In the advertising sign device, the reflector is directed to the left and right rear of the lamp so as to reflect the light emitted to the back of the lamp obliquely left and right and to illuminate a wide band including the center band between the lamps of the translucent member. And a V-shaped first reflector
It is located at both ends of the character-shaped first reflection plate, and projects from the end toward the front, reflects the light radiated obliquely rearward of the lamp, and has a wide centered area between the lamps of the translucent member. An advertisement signboard device comprising: a second reflection plate that illuminates a band and an arc surface reflection portion that connects the first reflection plate and the second reflection plate with an arc surface.