JP2015215570A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which is overlapped and fixed to a power pole at height which can be viewed by a pedestrian, which saves an installation space, which emits light by plane emission during night, therefore which enhances an advertisement display effect during daytime and night.SOLUTION: A pair of LED light sources 7 emit light, and the emitted light is incident from incident end surfaces 6a on both sides of a light guide plate 6 by a predetermined incident angle, and transmitted light which transmitted the light guide plate 6 is reflected on a reflection surface 3a side, then the reflection light is radiated forward for plane emission, thereby an advertisement medium 11 disposed on a front side is displayed by light emitting display from a display window part 4a.

Description

  The present invention relates to a display device capable of emitting and displaying the inside of a display window frame by irradiating light from light sources arranged on both sides in a circumferential direction to a display window portion of an arc-shaped frame body that is overlapped and fixed on a power pole.

  The utility pole is used as a support for supporting the power transmission line, and a winding signboard for displaying an advertisement of a company or a store is fixed to the surface of the utility pole. In addition, an advertisement for a company or a store is displayed on a telephone pole by assembling a sleeve signboard. In order to increase the visibility of advertisements so that the sleeve sign can be seen at night, an electric advertisement board with a built-in optical sensor and fluorescent lamp has been proposed (see Patent Document 1).

  In addition, an advertisement crime prevention light in which an advertisement function and a lighting function are added to a sleeve signboard has been proposed. This is because a white light emitting diode is disposed opposite to the end of the light guide plate as a light source in the signboard display, and the light emitted from the white light emitting diode is incident from the end of the light guide plate and emitted from the plane of the light guide plate. An advertisement is displayed by placing the light-transmitting signboard on the outside of the light plate and back-lighting the light-transmitting signboard. In addition, a case is provided at the bottom of the signboard display, and a white light emitting diode is attached downward in the case to form a security light. The commercial power source is turned on and off based on the signal from the day / night sensor, and the commercial power source is converted to direct current to supply power to the signboard illumination light source and the crime prevention illumination light source (see Patent Document 2).

JP-A-11-65496 Utility Model Registration No. 3144232

  The above-mentioned electric advertisement board and advertisement crime prevention light are provided as a sleeve signboard at a position protruding from the upper part of the utility pole using a fixture. The sleeve signboard looks good from a distance, but it is difficult for a pedestrian or person near the utility pole to notice and the display content is difficult to see.

  On the other hand, since the advertisement wound around the telephone pole is attached close to the height of the pedestrian's eyes, there is an advantage that the advertisement and the effect of attracting customers are high and the guidance can be performed accurately. In addition, unlike a sleeve signboard, it does not require installation space because it is wound around a telephone pole, and there is no worry of being hit by strong winds.

  However, the advertisement wrapped around the utility pole is easy to see during the day, but the display becomes inconspicuous at night and the advertising effect tends to decrease. Further, an advertising board that emits a curved advertisement wound around a power pole has not been put into practical use, and it is not easy to make the curved advertisement display surface uniformly emit light. In addition, instead of a streetlight provided at a high height of a utility pole, if an advertisement wound around the utility pole emits a surface light, it can also be used as a streetlight.

  The object of the present invention is to solve the above-mentioned problems of the prior art, and is fixed to the power pole so that it can be visually recognized by a pedestrian, does not take up installation space, and brightly emits light at night, regardless of day or night. An object of the present invention is to provide a display device with enhanced advertisement display effect.

In order to achieve the above object, a display device according to the present invention has the following configuration. That is, a mounting frame body that is curved and fixed in an overlapping manner on a power pole, and a display window is formed at the center of the front surface, and a display window portion is formed at the center of the front surface. A display frame body formed in an arc shape, and a frame body that is integrally assembled with the reflective surface of the mounting frame so as to reflect the transmitted light incident from the incident end surfaces on both sides in the circumferential direction. And an arcuate light guide plate that emits light toward the display window, and an irradiation surface is inclined with respect to the incident end surface so as to be incident on the incident end surfaces on both sides in the circumferential direction of the light guide plate at a predetermined incident angle. A pair of LED light sources, an arc-shaped transparent display plate that holds an advertising medium, and is disposed in front of the light guide plate, and a space between the display frame and the transparent display plate. Assembled along the peripheral edge of the display window A power supply unit configured to press and support the periphery of the transparent display panel toward the light guide plate, and a power supply unit that supplies power to the pair of LED light sources according to ambient brightness. The power is supplied from the unit to cause each of the pair of LED light sources to emit light and to be incident at a predetermined incident angle from the incident end surface of the light guide plate, so that the transmitted light transmitted through the light guide plate is reflected by the reflection surface. The advertisement medium disposed in front by emitting light in front and emitting light from the display window is displayed.
When the display device is used, when the advertising medium is held on the transparent display plate and the arc-shaped frame is fixed to the utility pole, the sunlight is reflected on the reflecting surface and the advertising medium can be easily seen in the daytime. By turning on the LED light source, the advertising medium disposed in front by causing the light guide plate to emit light can be displayed and emitted from the display window, so that the advertisement display effect can be maintained regardless of day or night. In addition, the light guide plate that emits light at night emits light from the display window to the surroundings, so that it can also serve as a streetlight.

The pair of LED light sources are preferably assembled by being sandwiched diagonally by a first spacer provided in the mounting frame and a second spacer forming a gap between the transparent display plate and the light guide plate. .
As a result, the posture of the pair of LED light sources can be maintained and incident on the incident end face of the light guide plate with a predetermined incident angle instead of being perpendicular, so that the amount of transmitted light transmitted through the light guide plate is increased. Thus, the entire surface of the curved light guide plate can be brightly illuminated with the reflected light from the reflecting surface.

  Furthermore, it is preferable that a gap between the display frame and the transparent display plate is sealed with a sealing material. Thereby, even if it exposes to a wind and rain, an LED light source can prevent a water drop etc. invasion and can improve a weather resistance.

On the mounting surface of the mounting frame, reinforcing members extending in the circumferential direction are provided at a plurality of locations in the length direction of the utility pole, and the frame body is provided with a fixing band that passes through a band hole provided in the reinforcing material. Is preferably attached and fixed around the electric pole.
As a result, the mounting frame to which the light guide plate is assembled is reinforced by the reinforcing material, so that the frame, the light guide plate, the transparent display plate, etc. are not easily deformed when attached to the utility pole, and the band hole of the reinforcing material is formed by the fixing band. Since it is inserted and wound around the utility pole, it can be easily attached to and detached from the utility pole when changing the advertising medium. In particular, the utility pole has a tapered surface that tapers from the tip to the installation surface.If the fixed band is inserted into the band hole of the uppermost reinforcing material and fixed, the frame position is determined from the utility pole. By fixing at multiple locations, it will not slip off.

The power supply unit is supplied with commercial power from the utility pole, converts the voltage to supply DC power, and supplies power to the LED light source when the surroundings are dark to automatically turn on the power source under predetermined conditions. Preferably, the automatic flasher that shuts off and automatically turns off, and the commercial power supply is taken into the power supply circuit by the automatic flasher and DC power is supplied to the pair of LED light sources.
As a result, the brightness of the surroundings is detected by an automatic flasher (e.g., an e-switch), and the automatic flasher is turned off during the daytime without supplying DC power to the pair of LED light sources. The power supply is turned on, a commercial power supply is taken into the power supply circuit, a DC power supply is supplied to the pair of LED light sources, and the light guide plate emits light. Thereby, useless power consumption can be eliminated and the advertisement display effect can be maintained regardless of day or night.

In addition, the display device described above is fixed to the outer peripheral surface of a columnar column, and is electrically connected to the photovoltaic panel, the photovoltaic panel, and the pair of LED light sources. The controller may be assembled, and when the amount of power generated by the photovoltaic power generation panel falls below a predetermined voltage, the controller discharges from the charging battery and causes the pair of LED light sources to emit light for a predetermined time. .
As a result, the display device can be installed on any support (cylindrical column) other than a utility pole with a solar panel or controller to effectively display advertisements in the evening or at night, or to turn on the streetlight, and replace the battery. Since it can be used by supplying power from natural energy without having to do it step by step, energy saving effects can be expected.

  If the display device according to the present invention is used, the advertisement display effect is enhanced regardless of day and night by being superposed on the power pole and fixed at a height that can be visually recognized by pedestrians, and does not take up installation space and brightly emits light at night. A display device can be provided.

It is the horizontal sectional view and vertical sectional view of a display apparatus. It is the front view of the display apparatus of FIG. 1, the horizontal sectional view which looked at the display apparatus from the lower end side, and explanatory drawing of the band hole of a reinforcing material. It is the front view of a power supply part, a right view, and a horizontal sectional view. It is explanatory drawing which shows an example of the use condition of the display apparatus of FIG.

  Hereinafter, preferred embodiments of the display device of the present invention will be described with reference to the drawings. As an example, a display device that is mounted on the outer peripheral surface of a utility pole and causes a light guide plate to emit light and display an advertisement medium disposed in front from a display window will be described.

First, a schematic configuration of the display device will be described with reference to FIG.
A frame body 2 is provided that is superposed on the power pole 1 and curved and fixed. Although the size of the frame body 2 is various, for example, the frame body 2 is attached in the circumferential direction of the utility pole 1 in a range of approximately 90 ° to 100 °. As the frame 2, for example, a metal plate such as stainless steel is bent and used. The frame body 2 includes an attachment frame body 3 that is fixed to the power pole 1 in an overlapping manner and has a reflection surface 3a formed on the outer surface. On the outer surface of the mounting frame 3, for example, a matte type white paint is applied to form a reflective surface 3a. A white sheet or the like may be attached instead of the white paint. The outer peripheral edge portion in the circumferential direction of the mounting frame 3 is formed with a bent portion 3b bent forward at an acute angle (see FIG. 1A). The outer peripheral edge in the longitudinal direction of the mounting frame 3 is formed with a bent portion 3c that is bent at a substantially right angle toward the front (see FIG. 1B).

  The display frame body 4 has a display window portion 4a formed at the front center portion, and has a side surface portion 4b whose outer peripheral edge portion in the circumferential direction is bent at an obtuse angle (see FIG. 1A). The outer peripheral edge of the display frame body 4 in the longitudinal direction is formed with a bent portion 4c that is bent at a substantially right angle toward the front (see FIG. 1B).

  The display frame 4 is overlapped so as to cover the mounting frame 3 so that the side surface 4b overlaps with the bent portion 3b on both sides in the circumferential direction and the bent portion 4c overlaps with the bent portion 3c on both sides in the longitudinal direction. In this state, the fixing bolt 5a is fixed to the screw hole penetrating the side surface portion 4b and the bent portion 3b, and the fixing bolt 5b is fixed to the screw hole penetrating the side surface portion 4c and the bent portion 3c. The display frame body 4 is assembled integrally to form a frame-shaped frame body 2 curved in the circumferential direction (see FIG. 2B).

  The light guide plate 6 formed in an arc shape is superimposed on the reflection surface 3a of the mounting frame 3 and integrally assembled by adhesion or the like, and emits surface light toward the display window portion 4a. As the light guide plate 6, an acrylic resin plate formed in an arc shape is preferably used. An LED light source 7 is provided in each space portion surrounded by the reflection surface 3a and the bent portion 3b of the mounting frame 3. The pair of LED light sources 7 are assembled with the irradiation surface inclined with respect to the incident end surface 6a so that the light incident plate 6 is incident on the incident end surface 6a at a predetermined incident angle with both circumferential end surfaces of the light guide plate 6 in the circumferential direction. ing. Specifically, the pair of LED light sources 7 is diagonally formed by a first spacer 8 provided in the mounting frame 3 and a second spacer 9 that forms a gap between the transparent display plate 10 and the light guide plate 6. It is sandwiched and assembled in an inclined posture. Note that a light shielding material 6b (for example, a light shielding metal tape) is attached to the outer peripheral surface (the portion hidden by the display frame body 4) in the vicinity of the incident end face 6a of the light guide plate 6 to increase incident light incident on the light guide plate 6. It is preferable to do so. As the first spacer 8 and the second spacer 9, metal bars (for example, stainless steel round bars) having different diameters are used.

  If the LED light source 7 is disposed so as to face the incident end face 6a, the incident light enters the incident end face perpendicularly and travels straight through the light guide plate 6 to diffuse the incident light without being reflected by the reflecting face 3a. Therefore, the transmitted light does not reach the central portion of the light guide plate 6 and becomes dark. For this reason, it is necessary to make incident light incident on the LED light source 7 so that the light emitting surface faces the reflecting surface 3a so as to have a predetermined incident angle with respect to the incident end surface 6a. Needless to say, it is necessary to set the incident angle of incident light to be smaller than the angle (critical angle) at which the incident end face 6a totally reflects.

  Thus, the posture of the pair of LED light sources 7 can be maintained and incident on the incident end surface 6a of the light guide plate 6 with a predetermined incident angle instead of being perpendicular, so that the transmitted light transmitted through the light guide plate 6 can be transmitted. By increasing the amount of light, the light guide plate 6 can be brightly surface-emitted with the reflected light from the reflecting surface 3a. The pair of LED light sources 7 uses the light guide plate 6 and the transparent display plate 10 in the frame 2 (the mounting frame 3 and the display frame 4), the first and second spacers 8 and 9, the backup material 14, and the like. After assembling, for example, it is inserted into the frame 2 from the lower side in the longitudinal direction and assembled. Various thicknesses of the LED light source 7 are used. However, since the LED light source 7 is incident on the incident end surface 6a of the light guide plate 6 and is held down by the second spacer 9, the plate of the light guide plate 6 is maintained. It is preferable to use the same thickness.

  As shown in FIG. 1A, an arc-shaped transparent display plate 10 that holds an advertising medium 11 is disposed in front of the light guide plate 6. As the transparent display board 10, an acrylic resin board is used suitably. The advertising medium 11 is pasted on the back side of the transparent display board 10 and displayed on the display window 4a. Although the advertising medium 11 may be affixed to the front surface side of the transparent display board 10, it can be displayed more clearly when it is affixed to the back side. The transparent display plate 10 is longer than the light guide plate 6 in the circumferential direction, and is provided with a predetermined gap 13 between the light guide plate 6 and the second spacer 8. Further, as shown in FIG. 1B, third spacers 21 are respectively provided inside the bent portions 3 c provided at both ends in the longitudinal direction of the attachment frame 3, and the transparent display plate 10 and the light guide plate 6 are provided. The fourth spacers 22 are respectively provided at both ends in the longitudinal direction. Moreover, a space for wiring is provided at the upper end in the longitudinal direction of the mounting frame 3, and a drain hole (not shown) is provided at the lower end in the longitudinal direction.

  The transparent display plate 10 is supported by inserting a backup material 14 (support member) between the display frame 4 and pressing the periphery (four sides) of the transparent display plate 10 toward the light guide plate 6. Specifically, the transparent display board 10 is sandwiched and supported between the first spacer 8 by a backup material 14 that is elastic with the display frame 4. The backup material 14 is preferably an elastic member such as a foam material, a silicon rubber material, a metal coil, or the like. Further, the gap between the display frame 4 and the transparent display plate 10 is sealed by the sealing material 15 around the display window portion 4a. The sealing material 15 only needs to maintain waterproofness and dustproofness, and may be a resin material such as silicon rubber, an adhesive, or the like. Thereby, even if a display apparatus is exposed to a wind and rain, invasion of a water drop etc. can be prevented into the LED light source 7, and a weather resistance can be improved.

  Further, as shown in FIGS. 2A and 2B and FIGS. 3A and 3B, a power supply unit 16 that supplies power to the pair of LED light sources 7 is provided on the upper side surface portion 4b of the display frame 4. Is provided. The power supply unit 16 is supplied with commercial power (100 V) from the utility pole 1 and performs voltage conversion to supply DC power (12 V), and automatically turns on when the surroundings are darkened. It is equipped with an e-switch (automatic flasher) that automatically turns off when the set time or brightness is detected. The power supply unit 16 takes in a commercial power supply into a power supply circuit based on a detection signal for detecting the night of the day / night sensor, and supplies DC power to the pair of LED light sources 7.

  As shown in FIG. 3C, the power supply unit 16 is housed in a metal (for example, stainless steel) power supply case 17. The power supply case 17 is assembled by fitting a fixing bolt 17c into a screw hole penetrating an inner case body 17a having an opening portion and an outer case body 17b having an opening portion. Further, the power supply case 17 is assembled integrally with the frame body 2 by superimposing the inner case body 17a on the side surface portion 4b of the display frame body 4 and fitting the fixing bolts 17d into the threaded holes that pass therethrough. At the bottom of the power supply case 17, a wiring hole 17 e for taking in the feeder line 18 (see FIG. 3A) from the utility pole 1 is provided.

  1 (A) and 1 (B), reinforcing members 19 extending in the circumferential direction are provided on the mounting surface 3d of the mounting frame 3 at a plurality of locations in the length direction of the utility pole 1 (in FIG. 1 (B)). 3 places). The reinforcing member 19 is a metal band-like material (for example, a stainless steel band-like material) similar to the attachment frame 3, and is formed in an arc shape like the attachment frame 3, by resistance welding or the like to the attachment frame 3. They are joined together. The length of the reinforcing member 19 in the circumferential direction is shorter than the length of the mounting frame 3. Both ends of the reinforcing member 19 are respectively formed with bent portions 19a that are bent in the radial direction of the utility pole 1, and each bent portion 19a is formed with a band hole 19b (FIGS. 1B and 2). (See (C)). The fixed band 20 (see FIG. 4) is inserted into the band hole 19 and is wound around the outer peripheral surface of the utility pole 1 so that the bent portions 19a provided on both sides bite the utility pole 1 and the display device is It is fixed to the utility pole 1.

  Thereby, since the attachment frame 3 to which the light guide plate 6 is assembled is reinforced by the reinforcing material 19, when the display device is attached to the utility pole 1, the frame 2 is hardly deformed and the LED light source 7 is not displaced. The light guide plate 6 and the transparent display plate 10 are not easily deformed. Further, since the fixing band 20 is inserted through the band hole 19b of the reinforcing member 19 and is wound around and fixed to the utility pole 1, it is easy to attach and remove the frame 2 to the utility pole 1 when changing the advertising medium 11. Can be done. In particular, since the electric pole 1 has a tapered surface that is tapered from the tip toward the installation surface, when the fixing band 20 is inserted into and fixed to the band hole 19b of the uppermost reinforcing member 19, the frame 2 becomes the electric pole 1. The height position is determined, and it will not slip off by fixing at multiple locations.

FIG. 4 shows a state where the display device is attached to the utility pole 1. When the advertising medium 11 is held on the transparent display board 10 and the arc-shaped frame 2 is fixed to the utility pole 2, the advertising medium 11 is passed from a passerby or vehicle by the reflected light from the sunlight reflecting surface 3a against a white background in the daytime. Easy to see. Further, when it becomes dark in the evening, the e switch provided in the power supply unit 16 is turned on and power supply to the pair of LFD light sources 7 is started. By turning on the pair of LED light sources 7, transmitted light that is incident on the incident end face 6 a from both sides in the circumferential direction of the light guide plate 6 at a predetermined incident angle is transmitted while being reflected by the light guide plate 6 and reflected from the reflective surface 3 a. The light is refracted in the gap 13 and irradiated to the front transparent display panel 10. In this way, the advertising medium 11 disposed in front by causing the light guide plate 6 to emit light by the reflected light from the reflecting surface 3a can be emitted and displayed from the display window portion 4a. Can be maintained. Further, the light guide plate 6 that emits light at night emits light from the display window portion 4a to the surroundings (for example, the brightness of the LED light source 7 is 350 lux to 380 lux), so that it can also serve as a streetlight.
As described above, a display device that is fixed to the power pole 1 so as to be visually recognized by a pedestrian, has an installation effect and does not take up installation space, and brightly emits light at night to enhance the advertisement display effect regardless of day or night Can be provided.

Although the said display apparatus was fixed to the utility pole 1, and was comprised so that it might be electrically fed from an electric wire and light-emitted, it is not limited to this aspect.
For example, the display device described above may be fixed by being overlapped on the outer peripheral surface of a columnar column. A solar power generation panel (for example, power generation amount 30 W) and a controller electrically connected to the solar power generation panel and the LED light source need to be assembled to the support column. Further, the controller may be configured to discharge from the charging battery and cause the pair of LED light sources to emit light for a predetermined time when the amount of power generated by the photovoltaic power generation panel becomes a predetermined voltage or lower (for example, 5 V or lower). Accordingly, since the display device can be used by supplying power from natural energy even in a place where there is no power supply facility, versatility is enhanced and an energy saving effect can be expected.

  DESCRIPTION OF SYMBOLS 1 Electric pole 2 Frame 3 Mounting frame 3a Reflecting surface 3b, 3c, 4c, 19a Bending part 4 Display frame 4a Display window part 4b Side surface part 5a, 5b, 17c, 17d Fixing bolt 6 Light guide plate 6a Incident end face 6b Shading material 7 LED light source 8 1st spacer 9 2nd spacer 10 Transparent display board 11 Advertising medium 13 Space | gap 14 Backup material 15 Sealing material 16 Power supply part 16a Adapter 17 Power supply case 17a Inner case body 17b Outer case body 17e Wiring hole 18 Feed line 19 Reinforcing member 19b Band hole 20 Fixed band 21 Third spacer 22 Fourth spacer

In order to achieve the above object, a display device according to the present invention has the following configuration. That is, a mounting frame body that is curved and fixed in an overlapping manner on a power pole, and a display window is formed at the center of the front surface, and a display window portion is formed at the center of the front surface. A display frame body formed in an arc shape, and a frame body that is integrally assembled with the reflective surface of the mounting frame so as to reflect the transmitted light incident from the incident end surfaces on both sides in the circumferential direction. An arc-shaped light guide plate that emits surface light toward the display window, an arc-shaped transparent display plate that is disposed with a predetermined gap in front of the light guide plate and holds an advertising medium, and the mounting frame. The first spacer provided and the second spacer forming a gap between the transparent display plate and the light guide plate are diagonally sandwiched at a predetermined incident angle with respect to the incident end faces on both sides in the circumferential direction of the light guide plate. Incident surface is inclined with respect to the incident end surface so that it is incident A pair of LED light sources assembled together, and the display frame body and the transparent display plate are assembled along the peripheral edge of the display window, and the periphery of the transparent display plate faces the light guide plate. A support member that is pressed and supported, and a power supply unit that supplies power to the pair of LED light sources according to ambient brightness, and the pair of LEDs that are supplied with power from the power supply unit Each light source emits light and is incident at a predetermined incident angle from the incident end surface of the light guide plate, so that the transmitted light that passes through the light guide plate is irradiated with the reflected light reflected by the reflective surface to cause surface emission. The advertisement medium arranged in front of the display window is caused to emit light from the display window.
When the display device is used, when the advertising medium is held on the transparent display plate and the arc-shaped frame is fixed to the utility pole, the sunlight is reflected on the reflecting surface and the advertising medium can be easily seen in the daytime. By turning on the LED light source, the advertising medium disposed in front by causing the light guide plate to emit light can be displayed and emitted from the display window, so that the advertisement display effect can be maintained regardless of day or night. In addition, the light guide plate that emits light at night emits light from the display window to the surroundings, so that it can also serve as a streetlight.
In addition, since the posture of the pair of LED light sources can be maintained and incident on the incident end face of the light guide plate with a predetermined incident angle instead of being perpendicular, the amount of transmitted light transmitted through the light guide plate can be increased. The entire surface of the curved light guide plate can be brightly surface-emitted by the reflected light from the reflecting surface.

Claims (6)

A mounting frame body that is curved and fixed in a superposed manner on a power pole, and a display window portion is formed in the center of the front surface, and a display window portion is formed at the center of the front surface. A display frame body formed in an arc shape, and a frame body;
An arc-shaped light guide plate that is integrally assembled to be overlapped with the reflection surface of the mounting frame body and reflects the transmitted light incident from the incident end surfaces on both sides in the circumferential direction by the reflection surface to emit surface light toward the display window;
A pair of LED light sources each assembled by inclining an irradiation surface with respect to the incident end surface so as to be incident on the incident end surfaces on both sides in the circumferential direction of the light guide plate;
An arc-shaped transparent display plate that is arranged with a predetermined gap in front of the light guide plate and holds an advertising medium;
A support member that is assembled between the display frame body and the transparent display plate along a peripheral portion of the display window portion, and supports the periphery of the transparent display plate by pressing toward the light guide plate;
A power supply unit for supplying power to the pair of LED light sources,
Each of the pair of LED light sources emits light and is incident at a predetermined incident angle from an incident end surface of the light guide plate, so that the transmitted light transmitted through the light guide plate is irradiated forward with the reflected light reflected on the reflective surface side. The display device is characterized in that the advertising medium disposed in front by emitting light is displayed and emitted from the display window through the transparent display plate.   The pair of LED light sources are assembled by being sandwiched diagonally by a first spacer provided in the mounting frame and a second spacer forming a gap between the transparent display plate and the light guide plate. The display device according to 1.   The display device according to claim 1, wherein a gap between the display frame body and the transparent display plate is sealed with a sealing material.   On the mounting surface of the mounting frame, reinforcing members extending in the circumferential direction are provided at a plurality of locations in the length direction of the utility pole, and the frame body is provided with a fixing band that passes through a band hole provided in the reinforcing material. The display device according to claim 1, wherein the display device is attached and fixed to the utility pole.   The power supply unit is supplied with commercial power from the utility pole, performs voltage conversion and supplies DC power, a day / night sensor that detects day and night from ambient brightness, and the commercial power source by the day / night sensor. 5. The display device according to claim 1, wherein the display device is incorporated in the power supply circuit to supply DC power to the pair of LED light sources.   5. The display device according to claim 1, wherein the display device is fixed by being overlapped with a cylindrical body, wherein the cylindrical body is electrically connected to a photovoltaic power generation panel, the photovoltaic power generation panel, and the LED light source. And a controller that discharges the pair of LED light sources for a predetermined time by discharging from the charging battery when the amount of power generated by the photovoltaic power generation panel becomes a predetermined voltage or less.

Images