JP2505509Y2 - Lighting equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device, and relates to an improvement of the illuminating device, which is suitable mainly for a large number of large-sized advertising signs.

[0002]

2. Description of the Related Art Conventionally, a large number of straight tube fluorescent lamps (50 to 60 lamps) are arranged in parallel as an illuminating device for an advertising sign at intervals, and a transparent member for displaying an advertisement ( 2. Description of the Related Art A large-sized multi-lamp lighting device configured by arranging a synthetic resin molding plate or a synthetic resin sheet containing a woven cloth is used. In particular, in the design of the illumination device for the large-sized multi-light advertising signboard, the following points are problems regarding the lamp interval and the distance between the lamp and the display translucent member which is the irradiation surface.

(1) When a lamp is brought close to a translucent member which is an irradiation surface in order to increase the illuminance (brightness), a lamp image (difference between light and dark) is generated. Maintain In this case, the number of lamps increases. (2) When the lamp is moved away from the irradiation surface, the bright and dark lines disappear, 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 method of increasing the number of lamps is adopted. In this case, the lamp image will not occur,
A significant increase in power consumption is inevitable.

In consideration of the above problems, in the conventional lighting device for a large advertising signboard, the distance between the fluorescent lamp and the translucent member is about 30.
In many cases, the distance is set to cm, and the lamp interval is set to about 30 cm (transparent member distance: lamp interval = 1: 1 (general coefficient value)). However, even with the above configuration, the lamp image is not completely eliminated.

[0005]

As one means for solving the above problems, there is the use of a reflector. However, according to the use of a conventional reflector, when used as a single light source,
Increasing the illuminance is easy, but at the same time, it creates a contradictory state in which a strong lamp image is produced, and therefore its use remains a problem.

[0006]

[Purpose of the Invention] The present invention is a large-scale advertisement that can utilize the characteristics of the reflector plate as it is, without producing a lamp image on the translucent member for advertisement display, to obtain uniform brightness and to drastically reduce power consumption. The main purpose is to provide a signboard lighting device.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a large number of straight tube discharge lamps are arranged in parallel at intervals, a transparent member for displaying an advertisement is arranged in front of a lamp row, and a rear side of each lamp is arranged. In the lighting device configured by providing a reflector on the left and right sides of the lamp, the reflector reflects the light emitted to the back of the lamp diagonally to the left and right to illuminate the center band between the lamps of the translucent member. A first reflecting plate projecting in a V shape toward
A second band which is continuous with both ends of the V-shaped first reflector and reflects a light irradiated obliquely rearward of the lamp to irradiate a wide band including a central band between the lamps of the translucent member and a band directly below the lamp. A band connected from the reflector to the tip of the second reflector and receiving and irradiating the lateral irradiation light of other lamps including the adjacent lamp to reflect a band from the central band between the lamps of the translucent member to the band directly below the lamp. The gist is that it is composed of a third reflecting plate for irradiation.

[0008]

According to the above construction, the central zone between the lamps having the lowest illuminance of the translucent member for advertisement display is the light reflected by the first reflector and the second reflector, and the lateral direction of other lamps including the adjacent lamp. Since the third reflecting plate that picks up and reflects the irradiation light irradiates the light, the difference in illuminance between the region directly below the lamp and the central region between the lamps of the translucent member is averaged, and the illuminance is increased and the light is transmitted without a lamp image. The member is obtained.

[0009]

1 to 7 show an embodiment of the present invention. In the figure, A is an illumination box body of a horizontally long advertising signboard, a PVC-containing translucent sheet a for ad display is provided on the front surface of the box body, and a large number of straight tube type are provided in the box body. The fluorescent lamps B are arranged in parallel, and the reflector C of the present invention is installed behind each lamp B.

The reflector C according to this embodiment is located behind the center of the lamp B and has a V-shaped first reflector c ₁ which extends substantially symmetrically toward the left and right rear of the lamp, and both of the first reflector. The second reflector c that continuously projects toward the front at the tip
₂ and a third reflection plate c ₃ that continuously extends from the tip of the second reflection plate and extends rearward. Angle theta ₁ which the first reflector _{c 1} of the V-shaped building, the angle theta ₂ which the second reflector _{c 2} with respect to the first reflector _{c 1} overhangs, third with respect to the second reflector _{c 2} Angle θ at which the reflector c ₃ projects
_{Although 3} is an obtuse angle in the illustrated example, these angles are designed by the distance between the lamps and the distance between the lamp and the light transmitting member.

An example of mounting means for the reflector C is shown in FIG.
~ Shown in FIG. Reference numeral 1 is a channel-type column for mounting a lamp provided on the side of the lighting box, one end of an arm plate 2 is fixed to the upper and lower ends thereof, and a fluorescent lamp B is supported at the projecting end through a socket. The reflector C is positioned on the front surface of the column 1. The V-shaped first reflector c ₁ forming the reflector C has openings 3 near the upper and lower ends thereof, into which the reflector mounting member D is inserted. The mounting bracket D is
A belt-shaped metal plate is bent substantially in a U shape by the front plate 4 and the side plates 5 and 5, and the cut-and-raised claw pieces 6 and 6 protruding inward are formed on the side plates 5 and 5, respectively. 5 to 6
As shown in, when the side plates 5 and 5 are put into the openings 3 and 3 and then slid along the side surface of the column body 1, the claw pieces 6 and 6.
The reflector 6 is released after passing through the side surface of the pillar body 1, and is engaged with the rear surface of the pillar body 1, whereby the reflector C is supported on the pillar body side.

Further, as shown in FIG. 7, by attaching a wing-shaped metal fitting E to a desired position of the pillar 1 with a screw 7 and adding a means for suppressing the rear surface of the reflector C with this metal fitting, It is possible to stabilize the reflector.

FIG. 8 shows an example of a signboard illumination in which the reflector C is provided behind each lamp arranged in parallel. This example is based on a standard design of multi-lamp large-scale signboard illumination, and is a case where the distance between the fluorescent lamp and the light-transmitting sheet a is set to 30 cm and the lamp interval is set to 50 cm. The angles θ ₁ , θ ₂ , and θ ₃ forming the first reflector c ₁ , the second reflector c ₂ , and the third reflector c ₃ of the reflector C are θ ₁ = 135-1.
30 ° <180 °, θ ₂ = 145-140 ° <180
And θ ₃ = 155 to 150 ° <180 °.

According to the illuminating device having the above structure, as shown in FIG. 8, the light radiated to the back of the lamp is reflected diagonally forward and leftward by the first reflecting plate c ₁ , and the center of the translucent sheet a between the lamps. The band is illuminated. Further, the light emitted obliquely rearward of the lamp is reflected obliquely forward by the second reflecting plate c ₂ and is applied to a wide band including the band directly below the lamp mainly including the central band between the lamps. Furthermore, by the third reflecting plate c ₃ ,
The irradiation light in the lateral direction of the adjacent lamp is reflected obliquely forward, and the band from the central band between the lamps to the band directly below the lamp is irradiated. Moreover, the light reflected by the first to third reflecting plates intersects in front of the translucent sheet, so that a curtain of light is formed. It should be noted that the irradiation range of the light-transmitting sheet by the first to third reflecting plates in FIG. 8 is schematically shown for easy understanding.

As described above, the first to third reflectors c ₁ and c
_2, by the light reflected c _3, wide band is irradiated to the main ramp between center band of the light transmitting sheet a, and the reflected light of the first to third reflection plate is crossed in front of the light-transmitting sheet so,
The lamp image disappears. Moreover, the illuminance of the entire transparent surface is increased.

Next, various experimental examples in which the illuminating device according to the above-described embodiment is compared with a conventional illuminating device will be described below.

Comparative Experimental Example [1] A straight tube fluorescent lamp of 40 W was vertically arranged at intervals of 20 cm at a distance of 30 cm on average from a translucent sheet having a width of 8 m and a length of 2 m (area: 16 m ² ). A total of 56 rows (9 rows in parallel, 5 rows in the horizontal direction, and 11 rows on one side in total) (2 rows in total)
In the conventional illuminating device in which the transparent sheet was irradiated with 240 W), the average surface illuminance of the transparent sheet was 900 lux. A lamp image appeared on the translucent sheet. On the other hand, at a position 30 cm away from the translucent sheet, a fluorescent lamp of 52 W is laterally arranged at intervals of 50 cm for 16 cm.
When a book (total of 822W) is arranged and each lamp is provided with the above-described reflector to reflect the light-transmitting sheet, there is no lamp image, and the illuminance of the light-transmitting surface is 1350 lux, which is about 50% more than that of the conventional device. I was able to get the illuminance. It was also found that this can save about 63% in power consumption.

Comparative Experimental Example [2] 40 at a distance of 30 cm on average from a translucent sheet for signboard display having a width of 6 m and a length of 3.6 m (area: 21.6 m ² ).
In a conventional illuminating device in which 72 straight-tube fluorescent lamps of W in parallel with 20 cm intervals in the vertical direction (total 2880 W) are irradiated to the translucent sheet, a lamp image appears and the average surface illuminance of the translucent sheet is shown. Was between 900 and 1100 looks. On the other hand, at the position 30 cm away from the translucent sheet, the same 40 W fluorescent lamp is horizontally placed 50 cm.
When 37 lamps (1480 W in total) are arranged at intervals, and when each lamp is provided with the reflector having the above structure to reflect the translucent sheet, there is no lamp image, and the average surface illuminance of the transparent sheet is 1300 lux, which is the same as that of the conventional device. It was possible to obtain an illuminance that was about 30% higher than that. In addition, the power consumption is 49%.
It turns out that you can save electricity.

Comparative Experiment Example [3] 6c from a signboard translucent sheet 1.2m wide and 1.2m long
4 straight tube fluorescent lamps of 40W are placed at a distance of m.
Irradiation was performed by arranging three lines in parallel at 0 cm intervals. When the reflector is not used, the illuminance of the band directly below the lamp of the translucent sheet is 298.
6 lux, the central band illuminance between the lamps showed a value of 950 lux, and the lamp image appeared strongly, but when the above reflector was used, the illuminance directly under the lamp of the translucent sheet was 4060 lux, and the central band illuminance between the lamps was It showed a value of 4103 lux and no lamp image was observed. The effect observed in the above comparative experimental example is obtained by the presence of the third reflector which picks up the lateral irradiation light of the other lamps including the adjacent lamp and irradiates it on the light-transmitting sheet surface.

[0020]

As described above, according to the configuration of the advertising signboard lighting device of the present invention, the following effects can be obtained. (1) The use of a reflector having a special structure composed of the first to third reflectors eliminates the lamp image, which has hitherto been the biggest drawback of a multi-lamp large-sized advertising billboard, and is a transparent member for displaying a billboard. A large increase in illuminance can be realized at the same time. (2) Compared with the conventional signboard lighting device, the number of fluorescent lamps to be used can be greatly reduced to obtain the same illuminance, so that the power consumption can be significantly reduced. (3) By changing the angles and lengths of the first to third reflectors that form the reflector, it is possible to freely set the control of the irradiation light to the translucent sheet. (4) Maintenance and maintenance such as lamp replacement in the space inside the signboard box is easy. (5) It is possible to reduce the thickness of the signboard lighting device as a whole, reduce the weight, and reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a lighting device showing an embodiment of the present invention.

FIG. 2 is a plan view of a reflector.

FIG. 3 is a perspective view of a reflector mounting structure.

FIG. 4 is a perspective view of a mounting member.

FIG. 5 is a transverse cross-sectional view of the mounting structure portion in a state before mounting the mounting bracket on the reflector.

FIG. 6 is a cross-sectional view of the mounting structure portion in a state after mounting the mounting bracket on the reflector.

FIG. 7 is a transverse cross-sectional view of a mounting structure in a state where a metal fitting is applied to a reflector.

FIG. 8 is a light-transmitting surface irradiation explanatory view showing an example of signboard illumination.

[Explanation of symbols]

A Illumination box B Straight tube fluorescent lamp C Reflector c ₁ 1st reflector c ₂ 2nd reflector c ₃ 3rd reflector a Translucent sheet for advertising display 1 Lamp support pillar 2 Support arm plate D Installation Metal fittings 3 Mounting opening on the reflector side 4 Front plate of mounting metal fittings 5 Side plate 6 Cut and raised claw E Abutting metal fitting 7 Mounting screw

Claims (1)

(57) [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 on the rear side of each lamp. In the lighting device, the reflector reflects the light emitted to the back of the lamp obliquely to the left and right, and projects in a V shape toward the left and right of the lamp so as to irradiate the central zone between the lamps of the translucent member. A wide range including a central band between lamps and a region directly below the lamp of the translucent member, which is continuous with both ends of the first reflector and the V-shaped first reflector and reflects the light emitted obliquely rearward of the lamp. A second reflector for irradiating the band and a tip of the second reflector, which is connected to the tip of the second reflector and receives the lateral irradiation light of another lamp including an adjacent lamp to reflect the light and to reflect the light from the central band between the lamps of the translucent member. It is composed of a third reflector that irradiates the band up to the band directly below A lighting device characterized by the above.