JPH046587A - Guiding lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a guide light equipped with two straight tube lamps, which is powered by a commercial AC power supply in normal times, and which is powered by a built-in AC power source in an emergency. It relates to a device that lights up and guides with a storage battery.

(Prior art) This type of large guide light installed in theaters, halls, and gymnasiums is powered by commercial AC power during normal times, and is powered by a built-in storage battery during emergencies to provide guidance, as shown in Figure 5. As shown in the figure, it is equipped with two straight tube fluorescent lamps 1.2, and these lamps 1 and 2 are connected to an AC lighting device 3 connected to a commercial AC power source.
The two lamps 1.2 are connected to ballasts 4 and 5, respectively, and under normal conditions, the two lamps 1.2 are lit using a commercial DC power source, and the DC lighting device 6, which is connected to a commercial AC power source, is connected to the DC -
A storage battery 9 is connected to the AC conversion circuit 7 via a charging circuit 8, and one lamp 1 is connected to the oscillation circuit IO connected to the charging circuit 8.
It is charged via an AC converter circuit 7 and a charging circuit 8, and in the event of an emergency such as a power outage, a switching device such as a relay (not shown) is activated to light one lamp 1 with the oscillation of an oscillation circuit 10 using a storage battery 9 as a power source. ing. In FIG. 5, the AC lighting device 3 is connected to an AC power source via a flashing switch 11, and each lamp 1.2 is connected to a lighting tube 12.13, and the AC lighting device 3 and DC lighting The device 6 is opened and closed by an inspection switch 13. And with such a guide light,
In an emergency, only one lamp 1 is lit, so the 4th lamp
As shown in the figure, one lamp 1 is lit even in an emergency.
is disposed approximately at the center of the device main body 14 in the height direction, so that the brightness of the display panel 15 in an emergency is approximately uniform.

In addition, recently, such guide lights have been made thinner, and the distance between the display panel 15 and the lamps 1 and 2 is narrowed, and the display panel 15 has a higher brightness at the center of the lamps 1 and 2 than the lamps 1 and 2.
The brightness at the periphery of the lamp 1.2 is low, and a structure is proposed in which, for example, a dot pattern of white paint is formed on the display panel 15, and the density of the dots is made denser at the center of the lamp 1.2 and coarser at the periphery. has been done.

(Problems to be Solved by the Invention) In the guide light equipped with the two conventional straight tube fluorescent lamps 1.2 described above, in order to equalize the brightness of the display panel 15 in an emergency, it is turned on in an emergency. Since the lamp 1 is arranged approximately at the center of the display panel 15 in the height direction, under normal conditions, when the two lamps 1°2 are turned on, the display panel 1
The brightness at the top and bottom positions of the lamp 5 becomes uneven, which tends to make the guidance display unclear.Furthermore, the distance between the lamp 1 and the irradiation window hole 16 formed at the bottom of the device body 14 increases, causing problems such as low illuminance on the floor surface. have.

Furthermore, in a structure in which the display panel 15 is formed with a dot pattern made of white paint, the brightness of the dot portions of the dot pattern formed corresponding to the lamps 2 that do not turn on in an emergency is insufficient, resulting in shadows on the display panel 15. The problem is that the visibility of the display is poor.

The present invention was made in view of the above problems, and is a guide light using two straight tube lamps, which can make the brightness of the display panel uniform in both normal and emergency situations, and improve the visibility of the display. It provides:

[Structure of the invention]

(Means for Solving the Problems) The guide light of the present invention is provided in a fixture body having a translucent display panel attached to the opening surface, and is lit by an AC lighting device in normal times and switched from the AC lighting device in an emergency. Two straight tube lamps each lit by a DC lighting device are arranged parallel to the display panel, and the two straight tube lamps are divided into approximately three equal parts in the height direction of the display panel. A dot pattern with translucent ink dots attached is formed on the display panel, and the density of the translucent ink dots is set at the center of each of the straight tube lamps. This is a straight tube lamp with rough edges.

(Function) The guide light of the present invention has two
Under normal conditions, the two straight tube lamps are lit by operating the AC lighting device using a commercial AC power supply, and during a power outage, the AC lighting device is switched to the DC lighting device, and the two lamps are lit using a storage battery as the power source. Two lamps are turned on in both emergency and emergency situations, and the two straight tube lamps are placed at positions roughly divided into thirds in the height direction of the display panel, so they are spaced equally apart from the display panel. There is no uneven brightness from the center of the lamp to the periphery, no lamp sag occurs on the panel, and the brightness on the front of the display panel is approximately equal. The density of the dots in the dot pattern created by the ink dots is dense in the center of each straight tube lamp and coarse in the periphery, so the light transmittance is suppressed in areas of high brightness on the display panel, and the dots are spread from the center of the lamp to the periphery. There is no unevenness in brightness up to the side, and the brightness between the center and peripheral parts of the two lamps is approximately equal in both normal and emergency situations, improving the visibility of the display.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

Reference numeral 21 denotes a guide light fixture body, and the lamp sockets at both ends of the straight tube fluorescent lamps 22 and 23 are placed in pairs of lamp sockets on the upper and lower inner surfaces of the left and right ends of the fixture body 1, respectively. It is designed to be attached and detached at will. Further, a translucent display panel 25 is detachably attached to the front and rear surfaces or the front opening 24 of the instrument main body 21, and this display panel 25 is connected to the lamp 22.
．． 23 and are arranged substantially parallel to each other.

The two straight tube fluorescent lamps 22 and 23 are arranged at positions approximately equally divided into three in the height direction of the display panel 25.

The display panel 25 is made of a flame-retardant acrylic resin plate made of acrylic resin added with a flame-retardant material such as a halide, and has a milky white color, and displays 26 such as letters and figures are displayed on the outer surface of the panel 25. Printed and formed.

Furthermore, this display panel 25 is connected to the straight tube fluorescent lamp 22.
．． The inner plate surface facing 23 is subjected to a light diffusion treatment consisting of a large number of dots. This light diffusion treatment is performed, for example, by forming a dot pattern 27, as shown in FIG. It is formed by coating. The density of this dot pattern 27 changes depending on its position with respect to the straight tube fluorescent lamps 22.23, and the density of the dots is denser at the center of each of the straight tube fluorescent lamps 22.23. The periphery of this straight tube fluorescent lamp 22.23 becomes progressively rougher as the distance from the lamp 22.23 increases. That is, the density of the dots is gradually increased as they move away from each other in a direction perpendicular to the tube axis direction of the straight tube fluorescent lamps 22, 23. Further, the shape of the dots is not limited to a circle, but may be any other suitable shape such as a triangle, square, or hexagon.

Further, a window hole 28 having a translucent cover that illuminates the floor is formed in the center of the lower surface of the appliance main body 21.

Next, the lighting device will be explained with reference to FIG.

One pole side of the commercial AC power source 30 is branched, connected to a flashing switch 31 such as a wall switch, and connected to a terminal block 42 provided on the appliance body 21. The branch side and the other pole side are connected to the ballasts 33 and 34 of the AC lighting device 32 provided in the appliance main body 21, respectively, through this terminal block 42, and between the ballasts 33 and 34 and the other pole. are connected to the filaments of the straight tube fluorescent lamps 22 and 23, respectively. Further, lighting tubes 35 and 36 are connected to the lamps 22 and 23, respectively.

Further, both poles of the AC power source are connected to the charging circuit 39 from the terminal block 42 via the AC-DC conversion circuit 38 of the DC lighting circuit 37.
is connected to the charging circuit 39, and the lamp 22.2 is connected to the charging circuit 39.
3 and the lighting tubes 35 and 36 are connected to each other. Further, a storage battery 41 is connected to the charging circuit 39.

In addition, an inspection switch 43 for opening and closing is connected to the other pole side connected to the AC lighting device 32 and DC lighting device 37 from the terminal block 42.

The operation of this embodiment will be explained.

Two straight tube fluorescent lamps 22 and 23 arranged in parallel with the display panel 25 are lit by a ballast 33 and 34 when the AC lighting device 32 is operated by the commercial AC power supply 30 during peacetime. During this time, the AC-DC conversion circuit 38 and the charging circuit 39
The storage battery 41 is charged via. The AC lighting device 3
The DC lighting device 37 is operated by a relay device or the like from 2 to 2, and the two lamps 22.
23 are both lit, and the two lamps 22 and 23 are lit in both normal and emergency situations.

These two straight tube fluorescent lamps 22 and 23 are connected to the display panel 2.
Since the lamps 22 and 23 are arranged at positions roughly divided into three equal parts in the height direction of the lamps 22 and 23, they are arranged at equal intervals with respect to the display panel 25, and uneven brightness can occur from the center of the lamps 22 and 23 to the periphery. Therefore, no lamp image is generated on the panel, and the brightness at the front of the display panel is approximately uniform, improving the visibility of the display.

Furthermore, the dot density of the dot pattern 27 formed by the translucent ink dots attached to the inner plate facing the lamps 22 and 23 of the display panel 25 is such that the center of each straight tube lamp 22 and 23 is dense, and the density of the dots is higher than that of the straight tube fluorescent The dot pattern 27 is gradually formed as the lamps 22 and 23 move away from each other in a direction orthogonal to the tube axis direction.
The density of the dots is coarsely formed, and the periphery of each lamp 22, 23 is made rough, so that the light transmittance is suppressed in the high-brightness portion of the display panel 25. 22.23, the image of the lamp does not appear and there is no brightness unevenness from the center of each lamp 22.23 to the peripheral side, and both in normal and emergency situations, the center of the two lamps and The brightness of the surrounding area is approximately equal to that of the surrounding area.

With the configuration of the above embodiment, the minimum brightness/average brightness of the effective display surface of the display panel 25 is 177 or more in the standard, but becomes 172 or more.

In addition, since the lower lamp 23 is brought close to the window hole 28 on the lower surface of the instrument body 21, the illuminance irradiated from the window hole 28 on the lower surface of the instrument body 21 is determined by the standard from a point 2.5 m vertically downward passing through the optical center of the instrument body 21. The horizontal illuminance at a position of 0.51 on a straight line perpendicular to the display surface is equal to or higher than Ilx, which is more than twice that of conventional fixtures, improving floor illuminance.

In the above embodiment, the dot pattern 27 is placed on the panel 2.
Although the dots were formed by direct printing on the inner surface of the panel 5, the dots may be printed on a transparent film and the film may be attached to the display panel 25.

Furthermore, in a device in which display panels 25 are provided on both sides of the device body 21, the distance between the lamps 22, 23 and the display panels 25 on both sides is the same size.

〔Effect of the invention〕

According to the present invention, each of the appliance bodies having a translucent display panel attached to the opening surface is lit by an AC lighting device during normal times, and is switched from the AC lighting device in an emergency to be lit by a DC lighting device. Two straight tube lamps are arranged parallel to the display panel, and the two straight tube lamps are arranged at positions approximately divided into thirds in the height direction of the display panel. Tube lamps are lit by an AC lighting device operated by a commercial AC power supply during normal times, and during a power outage, the AC lighting device is switched to a DC lighting device, and the two lamps are lit using a storage battery as a power source. The two lamps that are turned on in an emergency are placed at equal intervals with respect to the display panel, and there is no uneven brightness from the center of the lamp to the periphery, and no lamp image appears on the panel, so the display panel The brightness of the front surface of the display panel is approximately uniform, and a dot pattern with transparent ink dots is formed on the display panel, and the density of the transparent ink dots is made dense in the center of each of the straight tube lamps. , Since the peripheral area is made rough, two lamps are turned on both in normal and emergency situations, and the light transmittance is suppressed in the high-brightness part of the display panel, causing uneven brightness from the center of the lamp to the peripheral area. The brightness between the center and the periphery of the two lamps is approximately equal in both normal and emergency conditions, and even when the display panel is placed close to the lamp, no lamp image appears, and the brightness between the lamp and display panel is The distance between the two can be reduced, the entire device can be made thinner and smaller, and the visibility of the display can be improved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a guide light showing an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of the same display panel,
FIG. 3 is a circuit diagram similar to the above, FIG. 4 is a partially cutaway perspective view of a conventional guide light, and FIG. 5 is a circuit diagram similar to the above. 21... Appliance body, 22.23... Straight tube fluorescent lamp,
25...Display panel, 27...Dot pattern. m houses

Claims (1)

[Claims] (1) Inside the main body of the appliance, which has a translucent display panel attached to the opening surface, there are two direct current lights, each of which is lit by an AC lighting device during normal times, and which is switched from the AC lighting device and lit by a DC lighting device in an emergency. A tubular lamp is disposed parallel to the display panel, and the two straight tube lamps are disposed at height positions approximately equally divided into three in the height direction of the display panel, and the display panel A dot pattern with translucent ink dots adhered to the lamp was formed, and the density of the translucent ink dots was made denser in the center of each straight tube lamp and coarser in the periphery of the straight tube lamp. A guide light that is characterized by