JP5393650B2 - LED internally illuminated road signs for pedestrian crossings and bicycle crossings - Google Patents

Description

  The present invention relates to an LED-illuminated road sign using LEDs (light-emitting diodes) for internal illumination, and more particularly to a large LED-illuminated road sign for a pedestrian crossing or bicycle crossing.

  Road signs indicating pedestrian crossings and bicycle crossings, also commonly referred to as 407 signs, are shown in the attached table 2 of the instructions on road signs, lane markings, and road markings (December 17, 1960, Prime Minister's Ministry of Construction Ordinance No. 3) Thus, it is set as the specific pentagon in which each dimension was defined by the standard. When installing such a road sign at a high position on the road, etc., each dimension is increased by a factor of 1.5, and the interior is lit with internal lighting so that it can be seen from a distance even at night. What was made is used.

  In such internally illuminated road signs, fluorescent lamps have been used as internal lighting, but recently, LEDs with low power consumption and long life have come to be used. In Patent Document 1 below, a high output is achieved in an internally illuminated road sign that illuminates a sign symbol of a display board that is detachably provided on both the front and back sides of a casing having a required shape by internal illumination arranged in the casing. The LED is arranged along the inner surface of the casing over the entire circumference with a required interval, and a reflection diffuser is provided on the inner surface of the casing facing the high-power LEDs.

JP 2006-307611 A

  However, in the LED-illuminated road sign described in Patent Document 1, high-power LEDs are arranged over the entire circumference of the inner surface of the housing, so that the amount of power consumption increases and the expected energy saving effect is obtained. There was a problem that it could not be obtained. In particular, in a large road sign, when LEDs are arranged over the entire circumference, a large number of LEDs are arranged, and this problem is remarkable.

  The present invention solves the above-described problems, and in a large LED internally illuminated road sign for pedestrian crossings and bicycle crossings, it can reduce power consumption and has a high energy saving effect. The purpose is to provide.

  The LED-illuminated road sign for a pedestrian crossing / bicycle crossing belt according to the present invention includes a sign-shaped sign body formed in a pentagon shape having a size 1.5 times the standard in front view, A cylindrical peripheral wall portion having a pentagonal cross section formed of a material having a light shielding property, a front wall portion including a pentagonal display plate having a light transmission property, closing a front opening of the peripheral wall portion; A rear wall portion including a pentagonal display plate that closes a rear opening portion of the peripheral wall portion and has a light transmission property, and the peripheral wall portion includes a substantially rectangular plate-shaped lower wall portion, and the lower wall portion. Left and right side walls of a substantially rectangular plate that rises perpendicularly from the left and right side edges of the left and right side walls, and obliquely upward from the upper end parts of the left and right side wall parts, respectively. The upper left wall portion of the substantially rectangular plate shape that is extended so as to approach each other and whose upper end portions are connected to each other, and A light reflecting material is provided on the inner surface of the peripheral wall portion, and a plurality of LEDs having a high luminous flux within a directivity angle range of 110 to 130 ° are disposed on the peripheral wall. It is configured to be able to irradiate the display light of the front wall part and the display plate of the rear wall part with uniform light by being partially arranged on the inner surface side of the part along the circumferential direction of the peripheral wall part. It is characterized by that.

  According to this, since the LED is partially arranged on the peripheral wall of the sign body (that is, not over the entire circumference), the power consumption can be reduced and a high energy saving effect can be obtained.

  Here, each LED preferably has a luminous flux of 20 lm or more in its initial characteristics. This is because if the luminous flux is 20 lm or more in the initial characteristics, sufficient illuminance to recognize the sign can be obtained.

  Further, each LED preferably has a luminous flux in the range of 20 to 25 lm in the initial characteristics. This is because if the luminous flux is in the range of 20 to 25 lm in the initial characteristics, it is possible to obtain sufficient illuminance for recognizing the sign and to suppress an increase in power consumption.

  Moreover, it is preferable that the LED is not disposed at least on the left side wall and the right side wall.

  According to this, the number of LEDs can be reduced and the amount of power consumption can be reduced, and the right side wall and the left side wall can be used as installation locations for devices such as a power source.

  Further, at least a range from the upper end portion of the upper left wall portion to a position lowered by 200 mm along the upper left wall portion, and a position from the upper end portion of the upper right wall portion to a position lowered by 200 mm along the upper right wall portion. It is preferable that the LED is not arranged in the range.

  According to this, since the LED is not disposed at least up to a position a predetermined distance from the upper end of each of the upper left wall and the upper right wall, the power consumption can be reduced.

  Further, at least 18 LEDs are arranged on the inner surface side of the lower wall portion with a predetermined interval within the range of 30 to 40 mm between the centers of the adjacent LEDs, and left and right from the central portion of the lower wall portion. Symmetrically and linearly along the longitudinal direction of the lower wall portion at the central portion in the short direction of the lower wall portion, the upper end portion on the inner surface side of the upper left wall portion From the position where a predetermined distance within the range of 200 to 320 mm is lowered along the upper left wall portion from the position, the distance between the centers of the adjacent LEDs is set as a predetermined interval within the range of 30 to 40 mm, and at least nine of the upper left wall Are arranged side by side along the longitudinal direction of the upper left wall portion, and 200 mm along the upper right wall portion from the upper end portion to the inner surface side of the upper right wall portion. Down a predetermined distance in the range of ~ 320mm From the position, the distance between the centers of the adjacent LEDs is set as a predetermined distance within a range of 30 to 40 mm, and at least nine, along the longitudinal direction of the upper right wall portion, in the central portion in the short direction of the upper right wall portion It is preferable that they are arranged in a straight line.

  According to this, since the display board can be illuminated with good uniformity and at least the LED is not arranged to a position that is lower than the upper end of each of the upper left wall and upper right wall by a predetermined distance, power consumption is reduced. Can be reduced.

  Further, it is preferable that the number of LEDs arranged in the lower wall portion is in the range of 18 to 24, and the number of LEDs arranged in the upper left wall portion and the upper right wall portion is in the range of 9 to 12, respectively.

  According to this, it is possible to illuminate with a substantially minimum number of LEDs with good uniformity, and the energy saving effect is also high.

Further, the peripheral wall portion includes a frame body having a substantially pentagonal cylindrical shape on the outer surface side,
The frame main body has a main body wall portion formed in a plate shape along the front-rear direction, and a channel having an inverted U-shaped cross section that is disposed on both front and rear edges of the main body wall portion and protrudes inward of the sign main body. And providing a part,
The light reflecting material includes a rigid plate-like substrate and a light reflecting layer provided on the inner surface of the substrate, and has an inner surface protruding inward in the channel portion before and after the peripheral wall portion. As attached to the channel part,
The plurality of LEDs are arranged in parallel on the LED substrate, and the LED substrate is attached to the inner surface side of the light reflecting material disposed on the upper left wall portion, the upper right wall portion, and the lower wall portion, respectively. With
When a plurality of electrical devices other than the LED for road signs are incorporated in the sign body, the electrical devices are respectively arranged on the outer surface so as to suppress the protruding amount from the inner surface of the channel portion. The side is arranged to be closer to the inner surface of the main body wall portion than the inner surface of the channel portion, and is attached to the peripheral wall portion, and any one of the plurality of electric devices has the inner surface side as the light reflecting material. It is preferable to arrange it so as to protrude from the provided insertion hole.

  According to this, the light reflecting material is attached to the innermost surface side of the peripheral wall portion with the front and rear channel portions in the frame body of the peripheral wall portion as the mounting seat, and the LED is attached to the inner surface side of the light reflecting material. Thus, in the front-rear direction projection state, each LED can irradiate the front and rear display plates with uniform light without being shaded by the channel portion in the frame body of the peripheral wall portion. In addition, the electrical equipment is also attached to the frame body of the peripheral wall portion so that the outer surface side is closer to the inner surface of the main body wall portion than the inner surface of the channel portion so as to suppress the protruding amount from the inner surface of the channel portion. In the projection state in the front-rear direction, each LED can irradiate the front and rear display boards with uniform light as much as possible without causing shadows in the electrical equipment. Furthermore, even if the electric device is arranged in the arrangement area of the light reflecting material as a dimension higher than the height of the channel part from the main body wall in the frame body of the peripheral wall, it protrudes from the insertion hole of the light reflecting material. Each LED can irradiate the front and back display plates with uniform light by using the reflection at the periphery of the insertion hole as much as possible without causing a shadow of an electric device. As a result, in such a configuration, the LEDs can further illuminate the front and rear display panels with good uniformity.

  Of course, even in this case, as described above, the LED is not arranged on the left side wall and the right side wall so that the number of LEDs can be reduced and the power consumption can be reduced. Even if at least one of the electric devices is arranged on at least one of the left side wall portion or the right side wall portion, the electric device suppresses the amount of protrusion from the inner surface of the channel portion. If the outer surface side is closer to the inner surface of the main body wall portion than the inner surface of the channel portion and is attached to the left side wall portion or the right side wall portion, the electric device is inward from the channel portion. As a result, the LED can stably illuminate the front and rear display boards with a good degree of uniformity.

  Moreover, it is preferable that the illumination part for illuminating on the road is attached to the said lower wall part by making the whole project downward from the said sign main body, and the said illumination part uses LED as a light source.

  According to this, also about the illumination for roads, while having a long lifetime, a maintenance amount can be reduced and the energy saving effect can be further enhanced. Of course, the illumination part itself protrudes from the sign main body except for the power supply part and the like, and can be arranged on the front and rear display boards without shadowing as much as possible.

  Furthermore, it is preferable that the illumination part is attached to the lower surface side of the lower wall part via universal joint means arranged on the lower surface side of the lower wall part.

  According to this, since the illumination angle of the illuminating unit can be adjusted, the pedestrian crossing and the bicycle crossing band can be illuminated even when installed at a location slightly away from the pedestrian crossing and the bicycle crossing band.

  According to the present invention, it is possible to reduce the amount of power consumption and obtain a high energy saving effect in a large LED internally illuminated road sign for a pedestrian crossing / bicycle crossing.

It is a front view of LED internally illuminated road sign for pedestrian crossing and bicycle crossing according to one embodiment of the present invention. It is a front view except the front wall part and the rear wall part of the road sign. It is the III-III sectional view taken on the line of FIG. FIG. 4 is a view taken along arrow IV in FIG. 2. It is the VV sectional view taken on the line of FIG. FIG. 6 is a view taken in the direction of arrow VI in FIG. 2. It is the VII-VII sectional view taken on the line of FIG. FIG. 7 is a view taken along arrow VIII in FIG. 2. It is the IX-IX sectional view taken on the line of FIG. FIG. 3 is a view taken in the direction of arrow X in FIG. 2. It is the XI-XI sectional view taken on the line of FIG. It is a bottom view of the road sign. It is a principal part perspective view containing the illumination part of the road sign. FIG. 14 is an exploded perspective view of FIG. 13. It is sectional drawing along the longitudinal direction of the illumination part, and is the XV-XV sectional view taken on the line of FIG. It is sectional drawing along the transversal direction of the illumination part, and is XVI-XVI line sectional drawing of FIG. It is a bottom view which shows the cover part and lens part of the illumination part. It is explanatory drawing explaining the outline of the wiring of the electric equipment of embodiment. It is a figure which shows the measurement location of the illumination intensity in experiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a road sign 1 is a road sign for a pedestrian crossing / bicycle crossing used for a pedestrian crossing or a bicycle crossing. (Ministry of Construction of Japan, Ministry of Construction Ordinance No. 3) Enclosures of 1.5 times the dimensions of the pentagons in the standards “407-A”, “407-2” and “407-3” shown in Appendix 2 A body-shaped label body 2 and two illumination units 76 provided at the lower part of the label body 2 so as to protrude below the label body 2 are provided. The dimensions of the sign body 2 in front view are A = 90 cm, B = 30 cm, and C = 90 cm shown in FIG. 1, and the thickness (width in the front-rear direction) of the sign body 2 is 20 cm.

  As shown in FIGS. 2 and 3, the sign body 2 includes a cylindrical peripheral wall portion 3 having a pentagonal cross section formed of a light-shielding material (here, metal, specifically aluminum), and a peripheral wall portion. 3, a pentagonal front wall portion 60 that closes the front opening portion 3, and a pentagonal rear wall portion 65 that closes the rear opening portion of the peripheral wall portion 3. Each dimension of the pentagon formed by the outer periphery of the cross section of the peripheral wall part 3, the outer periphery of the front wall part 60, and the outer periphery of the rear wall part 65 is equivalent to each dimension of the sign body 2 in the front view described above. A connecting pipe T is attached to the outer surface of the peripheral wall 3. The connecting pipe T is for connecting, for example, the pillar P standing on the side of the road and the road sign 1.

  The front wall 60 includes a pentagonal annular metal frame 61 and a pentagonal display plate 62 that is attached to the frame 61 and closes the pentagonal opening formed by the frame 61. In addition, a seal member 63 for improving water tightness when the sign main body 2 is closed is provided inside the frame body 61 along the frame body 61. The display board 62 is made of synthetic resin, has light transmissivity, and has a color and a pattern defined by the standard.

  The rear wall portion 65 has the same configuration as that of the front wall portion 60, and is a pentagonal annular metal frame 66, and a pentagonal opening formed by the frame body 66 attached to the frame body 66. And a sealing member 68 is provided inside the frame body 66 along the frame body 66. The display board 67 is made of a synthetic resin, has light transmissivity, and has a color and a pattern defined by a standard.

  The peripheral wall portion 3 includes a substantially rectangular plate-shaped lower wall portion 4, a substantially rectangular plate-shaped left wall portion 5 and a right wall that rise perpendicularly to the lower wall portion 4 from the left and right side end portions of the lower wall portion 4. A substantially rectangular plate-like upper left wall that is extended so as to approach each other obliquely upward from the upper end portion of the left side wall portion 5 and the upper end portion of the right side wall portion 6 and the upper end portions 7a and 8a are connected to each other. It consists of a part 7 and an upper right wall part 8.

  The peripheral wall 3 includes a frame main body 11 having a substantially pentagonal cylindrical shape on the outer surface side. The frame main body 11 includes a main body wall 12 formed in a plate shape along the front-rear direction, and a main body wall. 12, and a channel portion 13 having an inverted U-shaped cross section that is disposed on both front and rear edges and projects inward of the sign main body 2. The main body wall portion 12 has a substantially pentagonal cylindrical shape, and the channel portions 13 and 13 have a substantially pentagonal annular shape and function as a reinforcing rib that increases the rigidity of the main body wall portion 12.

  The front wall part 60 and the rear wall part 65 are connected to the lower wall part 4 by a plurality of hinges 57 and can swing with respect to the lower wall part 4. The front wall part 60 and the rear wall part 65 are peripheral wall parts. 3, the front opening and the rear opening 3 are closed, and fixed to the peripheral wall 3 with a plurality of fasteners 58 (see FIG. 1) provided on the upper left wall 7 and the upper right wall 8. The main body 2 is sealed.

  Each channel portion 13 of the peripheral wall portion 3 includes a lateral wall 14 projecting inward of the sign body 2, an inner longitudinal wall 15 extending from the inner edge of the lateral wall 14 so as to continue to the body wall portion 12, and the lateral wall 14. It is comprised as a cross-section reverse U-shape provided with the outer vertical wall 16 extended to the outward of the label | marker main body 2 from an outer edge. And when the front wall part 60 and the rear wall part 65 are fixed to the surrounding wall part 3 using the fastener 58, the outer vertical wall 16 press-contacts each sealing member 63,68, and the marker main body 2 It is set as the seal site | part which seals the inside (refer FIG. 5). Further, as shown in FIGS. 5, 9, and 11, the lateral wall 14 serves as a mounting seat for a light reflecting material 21, a mounting bracket 35, and mounting plates 41 and 44 described later.

  Then, on the inner surface of the peripheral wall portion 3, the light reflecting material 21 that improves the light reflectivity over substantially the entire circumference has a width (length in the front-rear direction of the sign main body 2) from the width dimension of the frame main body 11. It is arranged as a slightly small 150 mm. In the embodiment, the light reflecting material 21 includes a rigid substrate 22 made of aluminum, and a white light reflecting layer 23 applied to the inner surface of the substrate 22 (see FIG. 5). . In addition, the light reflection layer 23 may be formed from a white coating, a film, or the like so that light is easily reflected toward the inside of the sign body 2 as in the embodiment. For example, “3M (registered trademark) Scotchical (registered trademark) light enhancement film” manufactured by Sumitomo 3M may be used as the reflective film.

  As shown in FIG. 2, in the case of the embodiment, the light reflecting material 21 is a light having an inverted V-shaped cross section disposed on the inner surface near the upper end portions 7a and 8a of the upper left wall portion 7 and the upper right wall portion 8. Reflecting material 21T, rectangular plate-shaped light reflecting materials 21L and 21R arranged on the inner surfaces of the upper left wall portion 7 and the upper right wall portion 8 and extending downward from the light reflecting material 21T, and the lower wall portion And a rectangular plate-shaped light reflecting material 21 </ b> D disposed on the inner surface side of 4. In these light reflecting materials 21T, 21L, 21R, and 21D, a predetermined number of mounting holes 21a (see FIG. 3) through which the screws 18 are inserted are disposed on both front and rear edges, while the channel portion 13 of the peripheral wall portion 3 is provided. A nut (blind nut) 17 to which a screw 18 is screwed is attached at a predetermined position of the lateral wall 14. And these light reflection materials 21T, 21L, 21R, and 21D are such that the screw 18 is fastened to the nut 17 through the mounting hole 21a, so that the light reflection layer 23a faces the inner surface side of the peripheral wall portion 3, It is attached to part 3 (frame body 11).

  Each light reflecting material 21L, 21R, 21D is provided with a plurality of nuts (blind nuts) 25 for attaching LED boards 28, 29, 30 (to be described later) near the center in the front-rear direction (see FIG. 5). Further, as shown in FIGS. 4 and 5, the light reflecting material 21L is provided with an insertion hole 21b for providing a receiver 48 of an electric device 47 described later on the lower rear edge side. As shown in FIGS. 6 and 7, an insertion hole 21 c is provided on the left rear edge side for providing an internal illumination power source 49 of an electric device 47 described later.

  On the inner surface side of the light reflecting material 21 (21L, 21R, 21D), a plurality of LEDs 27 are arranged partially (that is, not over the entire circumference) along the circumferential direction of the peripheral wall 3. The LED 27 is a white high-power LED with a directivity angle of 120 °, and here, a white chip type LED “NSSW123B” manufactured by Nichia Corporation is used, which is equivalent to 1 W with a DC12V input in series of three LEDs. The current is about 83 mA. The LED 27 may be a white LED having a directivity angle of 110 to 130 ° and a high luminous flux, and preferably has a luminous flux of 20 lm (lm: lumen) or more in the initial characteristics. More preferably, the thing in the range of 20-25lm is good. This is because if the luminous flux is 20 lm or more in the initial characteristics, sufficient illuminance can be obtained for recognizing the sign, and if the luminous flux is in the range of 20 to 25 lm in the initial characteristics, it is sufficient for recognizing the sign. This is because illuminance can be obtained and an increase in power consumption can be suppressed.

  Moreover, each LED27 is arranged in parallel by LED board | substrate 28,29,30, and is arrange | positioned by the light reflection material 21L, 21R, 21D. Each of the LED boards 28, 29, 30 is pressed by an inverted U-shaped mounting bracket 31 that is screwed to a nut 25 embedded in the light reflecting material 21 and screwed to a predetermined light reflecting material 21L, 21R, 21D. Are disposed. Each LED 27 is arranged so as to protrude from the arrangement surfaces 28a, 29a, 30a of the LED substrates 28, 29, 30 and a cover 28b made of synthetic resin such as transparent polycarbonate on the upper surface side (inner surface side). 29b and 30b are covered (see FIGS. 2, 3 and 5).

  And, on the inner surface side of the light reflecting material 21L of the upper left wall portion 7, an elongated rectangular LED substrate 28 is provided at the center in the short direction (front-rear direction) of the upper left wall portion 7 (see FIGS. 3 and 4). It is attached along the longitudinal direction of the upper left wall 7. Nine LEDs 27 are linearly arranged on the LED substrate 28 along the longitudinal direction of the LED substrate 28. The position of the uppermost LED 27 on the LED substrate 28 (center position; the same applies hereinafter) is a position that is lowered by 300 mm along the upper left wall portion 7 from the upper end portion 7a on the inner surface side of the upper left wall portion 7 (that is, in FIG. D1 = 300 mm), and the distance between the centers of adjacent LEDs 27 on the substrate 28 is 30.5 mm (that is, D = 30.5 mm in FIG. 2). That is, on the inner surface side of the upper left wall portion 7, nine LEDs 27 are arranged at the central portion in the short direction of the upper left wall portion 7 from the position of 300 mm along the upper left wall portion 7 from the upper end portion 7 a. They are arranged side by side along the longitudinal direction of the portion 7.

  Similarly to the upper left wall 7, the LEDs 27 are arranged in parallel on the upper right wall 8. That is, on the inner surface side of the light reflecting material 21 </ b> R of the upper right wall portion 8, an elongated rectangular LED substrate 29 configured in the same manner as the LED substrate 28 is a central portion in the short direction (front-rear direction) of the upper right wall portion 8. Are attached along the longitudinal direction of the upper right wall 8. Nine LEDs 27 are linearly arranged on the LED substrate 29 along the longitudinal direction, and the position of the uppermost LED 27 on the substrate 29 is changed from the upper end portion 8a on the inner surface side of the upper right wall portion 8 to the upper right wall portion. 8 is a position lowered by 300 mm along 8 (that is, D2 = 300 mm in FIG. 2), and the distance between the centers of adjacent LEDs 27 on the substrate 29 is 30.5 mm. That is, on the inner surface side of the upper right wall portion 8, nine LEDs 27 are located at the center in the short direction of the upper right wall portion 8 from the position of 300 mm along the upper right wall portion 8 from the upper end portion 8 a. They are arranged in a straight line along the longitudinal direction of the portion 8.

  In addition, on the inner surface side of the light reflecting material 21D of the lower wall portion 4, an elongated rectangular LED substrate 30 is provided at the center in the short direction (front-rear direction) of the lower wall portion 4 (see FIG. 6). It is attached along the longitudinal direction of the part 4. On the LED substrate 30, 21 LEDs 27 are linearly arranged along the longitudinal direction. Of the LEDs 27 on the LED substrate 30, the central LED 27 is disposed in the central portion 4 a of the lower wall portion 4, and the distance between the centers of adjacent LEDs 27 on the substrate 30 is 30.5 mm. That is, one LED 27 is arranged in the central portion 4a, ten LEDs 27 are arranged at equal intervals on both sides thereof, and the twenty-one LEDs 27 are symmetrically arranged from the central portion 4a of the lower wall portion 4. It is installed side by side. Note that the intervals between the LEDs 27 may not be equal as long as they are symmetrical on the left and right. Further, when the number of LEDs 27 on the LED substrate 30 is an even number, the LEDs 27 are not arranged in the central portion 4a.

  In addition, a plurality of electric devices 47 other than the road sign LED 27 are built in the sign body 2. In the case of the embodiment, as the electrical equipment 47, a receiver 48 that receives a signal from a human sensor that has detected the approach of a person at night, an internal illumination power supply 49 that turns on the LED 27, a breaker 50, a terminal block 51, an illumination An example of the external lighting power supply unit 53 that lights the units 76 and 76 is illustrated. The human sensor is disposed in an area (not shown) near the bottom of the pillar P.

  And the receiver 48 is being fixed to the frame main body 11 of the upper left wall part 7 in the surrounding wall part 3 using the attachment bracket 35, as shown to FIGS. The mounting bracket 35 has an inverted U-shaped cross section and is secured to the light reflecting member 21L and the lateral wall (mounting seat) 14 of the frame body 11 in the vicinity thereof with a screw 36. When the screw 36 is secured, the receiver 48 is attached to the body wall. The receiver 48 is fixed to the upper left wall portion 7 by being pressed to the portion 12 side. The screw 36 is configured to be screwed into a screw hole 21d provided in the light reflecting material 21L and a nut (blind nut) 17 provided in the lateral wall 14 of the frame body 11.

  The receiver 48 fixed to the inner surface side of the upper left wall portion 7 is arranged so that the outer surface 48b side is closer to the inner surface of the main body wall portion 12 than the inner surface 14a of the channel portion 13 so as to suppress the protruding amount from the inner surface 14a of the channel portion 13. Arranged so as to be close to 12a, the frame body 11 of the peripheral wall 3 is attached. In addition, since the thickness of the receiver 48 is larger than the height dimension from the main body wall portion 12 of the channel portion 13, the inner surface 48a side is connected to the sign main body 2 from the insertion hole 21b of the light reflecting material 21L. Inwardly, it protrudes slightly. Then, the receiver 48 assumes that the projection height P1 from the light reflecting material 21L including the mounting bracket 35 is equal to or smaller than the height dimension in the vicinity of the arrangement surface 28a of the LED board 28. It is arranged so as not to cast shadows. Incidentally, in the embodiment, the receiver 48 sets the protruding height P1 from the light reflecting material 21L including the mounting bracket 35 to about 12 mm, which is equivalent to the height dimension near the arrangement surface 28a of the LED board 28 ( (See FIG. 5).

  As shown in FIGS. 2, 8, and 9, the breaker 50 and the terminal block 51 are fixed to the inner surface side of the lower portion of the left side wall portion 5 using the mounting plate 41. The mounting plate 41 has a U-shaped cross section made of a metal plate such as aluminum, and has a plurality of mounting holes 41a through which the screws 18 are inserted at both front and rear edges. The breaker 50 and the terminal block 51 are fixed to the bottom by screws 42. A screw hole 41b is provided. Each screw 18 is fastened to a nut 17 provided on the lateral wall 14 of the left side wall portion 5 through an attachment hole 41a. The mounting plate 41 is fixed to the frame body 11 by the screws 18 and the breaker 50 and the terminal block 51 are attached to the mounting plate 41 by the screws 42. As a result, the breaker 50 and the terminal block are fixed. 51 is fixed to the inner surface side of the left side wall portion 5 via the mounting plate 41. The mounting plate 41 is painted white on the inner surface side so as to easily reflect the light of the LED 27.

  The breaker 50 and the terminal block 51 are also attached to the left side wall portion 5 by using a U-shaped mounting plate 41 having a recessed center so that the protruding amount from the inner surface 14a of the channel portion 13 is suppressed. The outer surfaces 50b and 51b are arranged so as to be closer to the inner surface 12a of the main body wall portion 12 than the inner surface 14a of the channel portion 13, and are attached to the frame main body 11 of the peripheral wall portion 3. In addition, the breaker 50 and the terminal block 51 are protruded inward slightly from the inner surface 14a of the channel portion 13 in a state where the breaker 50 and the terminal block 51 are attached to the left wall portion 5 using the mounting plate 41. Yes. The protrusion height P2 of the breaker 50 from the inner surface 14a of the channel portion 13 and the protrusion height P3 of the terminal block 51 from the inner surface 14a of the channel portion 13 are the breakers 50 and terminal blocks on the display plates 62 and 67. It is set as the dimension which does not project 51 shadows (refer FIG. 9).

  As shown in FIGS. 2 and 10, on the inner surface side of the right wall portion 6, there are power supply units 53, 53 for external illumination in a substantially rectangular parallelepiped shape for supplying a current of DC 44 V to each LED 80 of the illumination units 76, 76. Using the mounting plate 44, the longitudinal direction of each power supply unit 53 is fixed vertically. The mounting plate 44 has a U-shaped cross section made of a metal plate such as aluminum, and has a plurality of mounting holes 44a through which the screws 18 are inserted at both front and rear edges, and each external lighting power supply unit 53 is fastened with a nut 45 at the bottom. The screw 44b to project is projected. Each screw 18 is fastened to the nut 17 provided on the lateral wall 14 of the right side wall portion 6 through the mounting hole 44a. The mounting plate 44 is fixed to the frame body 11 by the screws 18 and the power supply units 53 and 53 are attached to the mounting plate 44 by the nuts 45. As a result, the power supply units 53 and 53 are It is fixed to the inner surface side of the right side wall portion 6 via the mounting plate 44. As with the mounting plate 41, the mounting plate 44 is painted white on the inner surface side so as to easily reflect the light of the LED 27.

  The protrusion height P4 from the inner surface 14a of the channel 13 in the external power supply units 53 and 53 is also set to a size that does not reflect the shadow of the external power supply unit 53 on the display plates 62 and 67 (see FIG. 11). .

  As shown in FIGS. 2, 6, and 7, a substantially rectangular parallelepiped internal illumination power supply unit 49 for supplying a current of 12 V DC to each LED 27 is provided on the inner surface side of the lower wall unit 4 using the mounting plate 38. The power supply unit 49 is fixed along the left and right sides (longitudinal direction of the lower wall 4). The mounting position of the internal illumination power source 49 is such that the front end face is 30 mm rearward from the center in the short direction of the lower wall part 4 (or the rear end face is 30 mm forward from the center in the short direction of the lower wall part 4), In addition, the right end surface is at a position 150 mm to the left from the inner surface of the right wall portion 6.

  The mounting plate 38 is welded along the left-right direction to the main body wall portion 12 of the frame main body 11 on the rear side of the LED substrate 30 provided on the lower wall portion 4. Specifically, the mounting plate 38 is formed of a metal plate such as aluminum, and a middle portion in the left-right direction is floated inward from the main body wall 12, and both left and right ends are welded to the inner surface of the main body wall 12. Screw holes 38 a are provided in the vicinity of the left and right ends of the portion of the mounting plate 38 that floats inward from the main body wall 12. The A screw 39 for attaching both ends of the internal illumination power supply 49 to the attachment plate 38 is fastened to each screw hole 38a. The power source 49 is fixed to the lower wall 4 by being screwed to the mounting plate 38.

  The internal illumination power source 49 fixed to the inner surface side of the lower wall portion 4 is arranged such that the outer surface 49b side is closer to the main body wall portion than the inner surface 14a of the channel portion 13 so as to suppress the protruding amount from the inner surface 14a of the channel portion 13. The inner wall 12 a is attached to the frame body 11 of the peripheral wall 3 so as to approach the inner surface 12 a of the outer wall 12. The power source 49 has a thickness substantially equal to the height of the channel 13 from the main body wall 12, but is attached to a portion of the mounting plate 38 that floats from the main body wall 12. From the insertion hole 21b of the light reflecting material 21D, the inner surface 49a is slightly protruded inward of the sign main body 2. Similarly to the receiver 48, the power supply unit 49 is also arranged so as not to cast a shadow on the display boards 62 and 67 as being equal to or smaller than the height dimension near the arrangement surface 30 a of the LED substrate 30. (See FIG. 3). Incidentally, in the embodiment, the power supply unit 49 sets the protruding height P5 from the light reflecting material 21D to about 12 mm, which is equivalent to the height dimension in the vicinity of the arrangement surface 30a (see FIG. 7).

  Both the external illumination power supply units 53 and 53 and the internal illumination power supply unit 49 are connected to an external AC power supply, convert the AC power supply to a DC power supply, and the LEDs 27 and 80 (the LED 80 is an illumination unit). 76).

  As shown in FIG. 18, an external AC power source on the pillar P side is connected to a breaker 50 in the sign body 2 through a day / night discrimination circuit (not shown) provided on the pillar P side. Each LED 27 on each LED board 28, 29, 30 is energized via an internal illumination power supply 49, and each LED 80 is energized via an external illumination power supply 53, 53 and a receiver 48. Is done. Each LED 27 is energized at night by the day / night discriminating circuit, and further illuminates on the condition that the receiver 48 has received a signal from the person sensor that detects the approach of the person. That is, each LED 27 is turned on at night, and each LED 80 is turned on at night and when a person approaches. In the case of the embodiment, the receiver 48 is supplied with power from the internal illumination power supply unit 49.

  In addition, the breaker 50 is provided with a switch for manually turning on / off the power so that the power can be turned off during nighttime maintenance.

  And each illumination part 76 is attached to the lower wall part 4 via the universal joint means 70, as shown to FIGS. The universal joint means 70 includes projecting pieces 71 and 71 projecting downward from both ends of the lower wall portion 4 in the short direction, a horizontally long rectangular frame 72 in plan view, and an L-shaped cross section. And connecting tools 73, 73. The long side portions 72a and 72a along the left and right direction of the frame body 72 are provided with projecting portions 72b and 72b facing each other upward from the central portion in the longitudinal direction, and the projecting portions 72b and 72b project. Screwed to the pieces 71, 71. Then, by loosening those screws, the frame body 72 can swing in the left-right direction (in the direction of arrow A1 in FIGS. 13 and 14) with respect to the sign body 2, and the screws are again screwed in the state where the frame body 72 swings. By tightening, the frame body 72 can be fixed in a tilted state with respect to the lower wall portion 4. Further, the short sides 72c, 72c along the front-rear direction of the frame body 72 are provided with protruding portions 72d, which protrude upward from the central portion in the longitudinal direction and face each other at a height shorter than the protruding portions 72b, 72b. 72d is projected, and the connecting parts 73 and 73 are screwed to the projecting parts 72d and 72d, and the illumination part 76 is connected to the connecting parts 73 and 73. And the illumination part 76 is rocked | fluctuated in the front-back direction (arrow A2 direction of FIG. 13, 14) with respect to the frame 72 by loosening the screw which has connected protrusion part 72d, 72d and connector 73,73. The illumination unit 76 can be fixed in a tilted state with respect to the frame body 72 by tightening the screws again in a state where the illumination unit 76 swings. Therefore, the illumination unit 76 can adjust the illumination angle in the front-rear direction (direction around the X axis in FIG. 13) and the left-right direction (direction around the Y axis in FIG. 13).

  As shown in FIGS. 13 to 16, the illumination unit 76 includes an aluminum housing 77 connected to the connectors 73 and 73, and a plurality (three in this case) of LED substrates attached to the lower surface of the housing 77. 79, a glass lens portion 81 that covers the LEDs 80 arranged on each LED substrate 79, and a cover 82 made of a synthetic resin (here, made of polycarbonate) that covers each LED substrate 79 and each lens portion 81. doing. Each LED substrate 79 is also covered with a synthetic resin substrate cover 90. The housing 77 is formed with a plurality of radiating fins 78 protruding upward, and the heat generated in each LED substrate 79 is released to the outside by the radiating fins 78.

  Further, the housing 77 is formed with a water vapor vent hole 83 and a wiring insertion hole 84 that open upward. The steam vent 83 is covered with a cap 86 made of synthetic resin. The cap 86 has a double structure in which a packing portion 85 made of Gore-Tex (registered trademark) having waterproof and air permeability is provided on the inside, and the packing portion 85 is fitted into the water vapor vent hole 83, An air passage is formed between the outer wall portion of the cap 86. As a result, water vapor generated inside the illumination unit 76 (portion covered by the cover 82) due to a temperature difference between the inside and outside is released from the water vapor vent hole 83, and the cover 82 is difficult to cloud. A fitting member 89 made of a synthetic resin is fitted into the wiring insertion hole 84, and a wiring 87 is extended to the outside through a through hole 88 provided in the fitting member 89. 2 is connected to the external illumination power supply unit 53 or the external illumination power supply unit 54.

  One LED 80 is disposed on each LED substrate 79, and the LED 80 is covered from below with a lens 81 a formed on each lens portion 81. Since the lens 81a is a meniscus lens in which both the inner surface and the outer surface are convex downward (that is, concave on the LED 80 side), the light emitted from the LED 80 can be distributed in a wide angle. As shown in FIG. 17, the lens 81a has an oval shape in which the width in the front-rear direction is longer than the width in the left-right direction when viewed from the bottom.

  The LED 80 of this embodiment is manufactured by Cree Corporation, and is a high-power LED having a forward voltage of DC 44 V, a forward current of 400 mA, a luminous flux of 1130 lm, a central luminous intensity of 1000 cd, power consumption of 16 W, and an irradiation angle of 40 °. In the present embodiment, three LEDs 80 are arranged in one illumination unit 76, but two LEDs may be used. The distance between the centers of the adjacent LEDs 80 is 40 mm in the case of three and 80 mm in the case of two. In this embodiment, three pieces are 40 mm.

  The road sign 1 configured as described above is connected to a pillar P or the like erected in the vicinity of a pedestrian crossing or bicycle crossing zone, and is disposed above the pedestrian crossing or the like. Then, at night, an electric current flows from the external power source to each LED 27 via the internal illumination power source 49, and each LED 27 is turned on to illuminate the display board 62 and the display board 67 from the inside of the sign body 2. Further, an electric current flows from the external power source to each LED 80 through the external power supply units 53, 53, and each LED 80 is lit to illuminate the road. In the embodiment, as described above, each LED 27 is turned on at night by the day / night discrimination circuit, and each LED 80 is turned on at night and when the presence of a person is detected by a human sensor. Become.

  Next, an experiment performed by changing the arrangement of the LEDs 27 on the inner surface side of the peripheral wall 3 will be described with reference to Table 1. The LED 27 used is the same as that of the embodiment, and the light reflecting material 21 is the same as that of the embodiment, and the LED 27 is disposed thereon. Hereinafter, each form in the experiment will be described using the same reference numerals as those in the embodiment. The forms of Nos. 1 to 8 in Table 1 are as follows. The LEDs 27 are linearly arranged along the circumferential direction of the peripheral wall 3 at the center in the width direction (front-rear direction) of the peripheral wall 3, and the distance between the centers of the LEDs 27 arranged in parallel is No. All except for 7 are 30 mm.

  <No. 1> Twenty-four LEDs 27 from the vicinity of the upper end portion 8a are arranged on the upper right wall portion 8 and 24 LEDs 27 are arranged on the upper left wall portion 7 from the vicinity of the upper end portion 7a, and the LED 27 is not provided on the lower wall portion 4.

  <No. 2> The upper right wall portion 8 and the upper left wall portion 7 are the same as No. 1, and 24 LEDs 27 are arranged side by side symmetrically on the lower wall portion 4.

  <No. 3> Nine from the position 20 cm down from the upper end wall 8 along the upper right wall 8 to the upper right wall 8, and from the position 20 cm down from the upper end 7 a along the upper left wall 7 to the upper left wall 7. Nine and 24 LEDs 27 are arranged side by side symmetrically on the lower wall portion 4.

  <No. 4> Nine from the position 30 cm down from the upper end 8 a to the upper right wall 8 along the upper right wall 8, and 30 cm from the position from the upper end 7 a to the upper left wall 7 by 30 cm down from the upper end 7. Nine and 24 LEDs 27 are arranged side by side symmetrically on the lower wall portion 4.

  <No. 5> Nine from the position 20 cm down from the upper end wall 8 to the upper right wall 8 along the upper right wall 8, and from the position 30 cm down from the upper end 7 a to the upper left wall 7 from the upper end 7 a. Nine and 24 LEDs 27 are arranged side by side symmetrically on the lower wall portion 4.

  <No. 6> The upper left wall portion 7 and the upper right wall portion 8 are the same as No. 4, and the lower wall portion 4 is a total of 6 pieces of each of the left and right end portions of the 24 LEDs 27 of No. 4. By covering with black tape, 18 LEDs 27 were arranged side by side symmetrically.

  <No. 7> The upper left wall portion 7 and the upper right wall portion 8 are the same as No. 4, and the lower wall portion 4 is the second, sixth from the left and right ends of the 24 LEDs 27 of No. 4, 18 LEDs 27 were arranged side-by-side symmetrically by covering a total of 6 each of the 10 thirds with black tape.

  <No. 8> The upper left wall portion 7 and the upper right wall portion 8 are the same as No. 4, and the lower wall portion 4 is one of the left end portion and the right end portion of the 24 LEDs 27 of No. 4. 21 LEDs 27 were juxtaposed by covering a total of 3 with black tape.

  Table 1 shows the wattage (Watt), bolt ampere (VA), and (1) to (11) shown in FIG. 18 (in FIG. 18 and Table 1, circles). The illuminance (unit lx) measured using an illuminometer at each location of “. In addition, although No.6-8 has not measured the wattage and the volt | ampere, since the number of LED27 is smaller than No.3-5, it is estimated that a wattage and a volt | ampere will also decrease.

  From the viewpoint of visibility, it is desirable that the illuminance at each location is 400 lx or more. However, even if the illuminance is somewhat low, the better the overall level of uniformity (brightness uniformity), the easier it is to recognize the sign. In No. 1, the upper part of the display panel 62 is bright but the lower part is dark, and the degree of uniformity is not good. Moreover, No. 2 which arrange | positioned LED27 over the perimeter has high illuminance and good uniformity, but the wattage is large and the energy saving effect is small. On the other hand, in the cases of Nos. 6 and 7, the numerical illuminance was good, but the degree of uniformity when actually viewed was slightly inferior. No. 8 was the one with the least number of LEDs 27 and good uniformity. Therefore, in the embodiment, in the form of No. 8, the arrangement of the LEDs 27 on the lower wall portion 4 is made symmetrical in order to further improve the degree of uniformity. Also, Nos. 3 to 5 had a larger number of LEDs 27 than No. 8, but less than No. 2, so the wattage was small and the degree of uniformity was good.

  From this experiment, even if the upper end position of the LED 27 in the upper right wall portion 8 and the upper left wall portion 7 is a position that is lower than the upper end portion 8a and the upper end portion 7a by a predetermined distance within the range of 200 to 300 mm, the display board 62 is well-balanced. , 67 can be illuminated. In addition, even if the upper end position of LED27 is lowered | hung to about 320 mm from the upper end part 7a and the upper end part 8a, it can be estimated that the degree of uniformity does not deteriorate. Moreover, although the space | interval of LED27 was 30 mm in this experiment, if the space | interval of centers is in the range of 30-40 mm, it can be estimated that the display boards 62 and 67 can be illuminated with good uniformity. In Nos. 6 and 7, although the leveling degree was slightly inferior, the leveling degree could be improved by increasing the number of LEDs 27 on the upper left wall part 7 and the upper right wall part 8, so the arrangement of the LEDs 27 on the lower wall part 4 It can be seen that the number should be at least 18. However, the number of the LEDs 27 on the upper left wall portion 7 and the upper right wall portion 8 is from the viewpoint of uniformity and energy saving when the LED 27 is disposed from a position lower than the upper end portion 8a and the upper end portion 7a by a predetermined distance within a range of 200 to 320 mm. Up to 12 is estimated to be appropriate.

  From the above experiment, it can be seen that the LED 27 can irradiate the display plate 62 and the display plate 67 with uniform light without being provided on the inner surface side of the peripheral wall 3 over the entire circumference. It was. And by providing LED27 partially, the number of LED27 can be decreased and the energy saving effect can be heightened.

  Further, it has been found that even light is obtained at least on the left side wall portion 5 and the right side wall portion 6 without arranging the LEDs 27. If the LEDs 27 are not arranged on the left side wall 5 and the right side wall 6, the left side wall 5 and the right side wall 6 can be used as installation locations for devices such as the external power supply 53, If a device is installed on the right wall 6, it is possible to prevent the shadow of the device from appearing on the display board 62 or the display board 67.

  Then, at least 18 (preferably 18 to 24) LEDs 27 are provided on the inner surface side of the lower wall portion 4 at intervals of 30 to 40 mm (intervals between the centers of adjacent LEDs 27; the same applies hereinafter). Range, more preferably 21), symmetrically from the central part 4a of the lower wall part 4 and linearly along the longitudinal direction of the lower wall part 4 to the central part in the short direction of the lower wall part 4 Are arranged in parallel, and on the inner surface side of the upper left wall portion 7, at a distance within a range of 30 to 40 mm from a position lowered from the upper end portion 7 a by a predetermined distance within a range of 200 to 320 mm along the upper left wall portion 7, At least 9 pieces (preferably 9-12 pieces, more desirably 9 pieces) are arranged in a straight line along the longitudinal direction of the upper left wall portion 7 at the central portion in the short direction of the upper left wall portion 7, and the upper right wall 200 on the inner surface side of the portion 8 from the upper end portion 8a along the upper right wall portion 8. At least 9 pieces (preferably 9-12 pieces, more preferably 9 pieces) at the intervals in the range of 30 to 40 mm from the position where a predetermined distance has fallen within the range of 320 mm, the central portion in the short direction of the upper right wall portion 8 In addition, if they are arranged in a straight line along the longitudinal direction of the upper right wall 8, the large-scale road sign 1 can illuminate the display boards 62 and 67 with good uniformity, and the number of LEDs 27 is small. The amount can be reduced.

  Further, if the LEDs 27 are arranged as in the embodiment, the display board 62 and the display board 67 can be illuminated with a good degree of uniformity with the minimum number of LEDs 27, and the power consumption can be greatly reduced, resulting in a high energy saving effect. can get.

  In the road sign 1, the light source of each illumination unit 76 is also an LED 80, which can reduce the power consumption and further improve the energy saving effect as compared with the conventional mercury lamp and sodium lamp, and the light source replacement frequency. The maintenance amount can be reduced. Since the light from the LED 80 is distributed at a wide angle by the lens 81a, a wide range can be illuminated. Further, each illumination unit 76 is attached to the sign body 2 via the universal joint means 70, and the angle can be adjusted in the front-rear direction and the left-right direction. Even if it is installed in, it is possible to illuminate a pedestrian crossing or a bicycle crossing zone by adjusting the illumination angle.

  Furthermore, in this road sign 1, the illumination part 76 itself protrudes downward from the sign body 2 except for the power supply parts 53, 53 and the like, and the shadows are not reflected on the front and rear display boards 62, 67 as much as possible. Can be arranged.

  The arrangement of the LEDs 27 can be appropriately changed within a range that does not impair the degree of uniformity, but at least the range from the upper end portion 7a of the upper left wall portion 7 to a position lowered by 200 mm along the upper left wall portion 7, and the upper right portion It is desirable not to arrange the LED 27 in the range from the upper end portion 8a of the wall portion 8 to a position lowered by 200 mm along the upper right wall portion 8. This is because even if the LEDs 27 are not arranged in these ranges, it is possible to illuminate the display plates 62 and 67 with a good degree of uniformity, and accordingly, the number of LEDs 27 can be reduced to increase the energy saving effect.

  Moreover, it is desirable not to arrange the LED 27 on the left wall portion 5 and the right wall portion 6. It is possible to illuminate the display boards 62 and 67 with good uniformity without arranging the LEDs 27 in these parts. The number of the LEDs 27 can be reduced correspondingly, and the energy saving effect can be enhanced. This is because it can be used as an installation place for equipment such as the external lighting power supply unit 53 and the equipment can be installed so that the shadow of the equipment is not reflected on the display boards 62 and 67.

  In particular, in the embodiment, the peripheral wall portion 3 includes a frame main body 11 having a substantially pentagonal cylindrical shape on the outer surface side, and the frame main body 11 is formed in a plate shape along the front-rear direction, and the main body A channel portion 13 having an inverted U-shaped cross section that is disposed on both front and rear edges of the wall portion 12 and projects inward of the sign main body 2 is provided. The light reflecting material 21 is composed of a rigid plate-like substrate 22 and a light reflecting layer 23 provided on the inner surface of the substrate 22, and the inner surface protruding inward in the channel portion 13 before and after the peripheral wall portion 3. The side 14a is attached to the channel portion 13 as a mounting seat 14. Further, a plurality of LEDs 27 are juxtaposed on the LED substrates 28, 29, and 30, and the LED substrates 28, 29, and 30 are attached to the inner surface side of the light reflecting material 21. A plurality of electrical devices 47 other than the road sign LED 27 incorporated in the sign body 2, that is, the receiver 48, the power supply parts 49 and 53, the breaker 50, and the terminal block 51, respectively, are provided on the inner surface 14 a of the channel part 13. The outer surface 48b, 49b, 50b, 51b, 53b side is arranged so as to be closer to the inner surface 12a of the main body wall portion 12 than the inner surface 14a of the channel portion 13 so as to suppress the protruding amount from the peripheral wall portion 3. It is attached. Further, any one of the plurality of electric devices 47, that is, the receiver 48 and the internal illumination power source 49 project the inner surfaces 48a, 49a side from the insertion holes 21b, 21c provided in the light reflecting materials 21L, 21D. Are arranged.

  Therefore, in the embodiment, the light reflecting material 21 (21T, 21L, 21R, 21D) is attached to the innermost surface side of the peripheral wall portion 3 with the front and rear channel portions 13 and 13 in the frame body 11 of the peripheral wall portion 3 as mounting seats. Then, since the LED 27 is attached to the inner surface side of the light reflecting material 21, each LED 27 can be moved back and forth without being shaded by the channel portion 13 in the frame body 11 of the peripheral wall portion 3 in the front-rear direction projection state. The display plates 62 and 67 can be irradiated with uniform light. Further, in the electric device 47, the outer surfaces 48b, 49b, 50b, 51b, and 53b are arranged on the outer surface 48b, 49b, 50b, 51b, and 53b side from the inner surface 14a of the channel portion 13 so as to suppress the protruding amount from the inner surface 14a of the channel portion 13. (In other words, fit between the channel portions 13 of the frame main body 11) and attached to the frame main body 11 of the peripheral wall portion 3. Each LED 27 can irradiate the front and rear display plates 62 and 67 with uniform light without being shaded by the electric device 47.

  Furthermore, the arrangement of the light reflecting materials 21L and 21D is set such that the receiver 48 and the power supply unit 49 of the electric device 47 are higher than the height of the channel 13 from the main body wall 12 in the frame main body 11 of the peripheral wall 3. Even if it is arranged in the area, it is arranged so as to protrude from the insertion holes 21b and 21c of the light reflecting materials 21L and 21D, and the electric equipment 47 is used as much as possible by utilizing the reflection at the periphery of the insertion holes 21b and 21c. Each of the LEDs 27 can irradiate the front and rear display plates 62 and 67 with uniform light. As a result, in such a configuration, the LED 27 can further illuminate the front and rear display plates 62 and 67 with good uniformity.

  Of course, even in this case, in the embodiment, as described above, the LED 27 is not arranged on the left wall portion 5 and the right wall portion 6 so that the number of LEDs 27 can be reduced and the power consumption can be reduced. In addition, at least one of the plurality of electric devices 47, in the embodiment, the breaker 50, the terminal block 51, and the external lighting power supply units 53 and 53 are arranged on the left side wall portion 5 and the right side wall portion 6. Yes. However, the outer surfaces 50b, 51b, and 53b are configured so that the breaker 50, the terminal block 51, and the external lighting power source units 53 and 53 as the electric devices 47 suppress the protruding amount from the inner surface 14a of the channel unit 13. The side is made closer to the inner surface 12a of the main body wall portion 12 than the inner surface 14a of the channel portion 13, in other words, the left side wall portion 5 and the right side wall portion 6 are fitted between the channel portions 13 of the frame main body 11. It is attached. Therefore, the electric devices 47 (the breaker 50, the terminal block 51, and the external lighting power supply units 53 and 53) reduce the amount of inward projection from the channel unit 13 as much as possible. As a result, the LED 27 can stably illuminate the front and rear display plates 62 and 67 with good uniformity.

  It should be noted that the receiver 48, the internal illumination power supply 48, the breaker 50, the terminal block 51, the external illumination power supply 53, and the like as the electrical equipment 47 are in positions where shadows are not reflected on the display boards 62 and 67. The arrangement of is not limited to the position of the embodiment.

  In the embodiment, the receiver 48 that receives the signal from the human sensor and turns on the illumination unit 76 is provided. Of course, the receiver 48 is not provided, and the LED 27 is illuminated at night. You may comprise so that the part 76 may be lighted. Furthermore, the illumination unit 76 may not be provided, and in that case, the external power supply unit 53 is not necessary. Furthermore, the illumination unit 76 may be turned on in response to a signal from the human sensor, and each LED 27 that has been turned on may blink.

1 ... road signs,
2 ... the sign body,
3. Perimeter wall,
4 ... lower wall,
4a ... Central part,
5 ... Left side wall
6 ... right side wall,
7 ... Upper left wall,
7a, 8a ... upper end,
8 ... Upper right wall,
11 ... Frame body,
12 ... body wall,
12a ... the inner surface (of the body wall),
13 ... Channel section,
14a ... (inside of the channel part)
21 ... light reflecting material,
22 ... substrate,
23 ... Light reflecting layer,
27 ... LED,
47. Electrical equipment,
48a, 49a, 50a, 51a, 53a ... (inside of electrical equipment) inner surface,
48b, 49b, 50b, 51b, 53b ... (outside of the electrical equipment),
60 ... the front wall,
62, 67 ... display board,
65 ... rear wall,
70: Universal joint means,
76 ... Illumination part,
80 ... LED.

Claims (11)

LED interior-lit road signs for pedestrian crossings and bicycle crossings used for pedestrian crossings and bicycle crossings,
It has a case-like sign body formed in a pentagon shape with dimensions 1.5 times the standard in front view,
The sign body is
A cylindrical peripheral wall portion having a pentagonal cross section formed of a material having a light shielding property;
A front wall portion including a pentagonal display plate that closes the front opening of the peripheral wall portion and has light transmission;
A rear wall provided with a pentagonal display plate that closes the rear opening of the peripheral wall and has light transmission;
With
The peripheral wall portion is
A substantially rectangular plate-like lower wall,
A substantially rectangular plate-like left side wall and a right side wall that rise vertically from the left and right side edges of the lower wall, respectively,
An upper left wall portion and an upper right wall portion that are substantially rectangular plates that extend from the upper end portion of the left side wall portion and the upper end portion of the right side wall portion so as to approach each other obliquely upward, and the upper end portions are connected to each other;
With
The inner surface of the peripheral wall portion is provided with a light reflecting material over substantially the entire circumference,
By partially disposing a plurality of LEDs having a high luminous flux within a directivity angle range of 110 to 130 ° on the inner surface side of the peripheral wall portion along the circumferential direction of the peripheral wall portion, An LED-illuminated road sign for a pedestrian crossing / bicycle crossing band, wherein the display plate and the display plate on the rear wall are configured to be able to irradiate a uniform light.   2. The LED-illuminated road sign for a pedestrian crossing / bicycle crossing band according to claim 1, wherein each LED has a luminous flux of 20 lm or more in an initial characteristic.   3. The LED-illuminated road sign for a pedestrian crossing / bicycle crossing band according to claim 2, wherein each LED has a luminous flux in an initial characteristic range of 20 to 25 lm.   The LED for a pedestrian crossing / bicycle crossing belt according to any one of claims 1 to 3, wherein the LED is not disposed on at least the left side wall and the right side wall. Illuminated road sign. At least in the range from the upper end of the upper left wall part to a position lowered by 200 mm along the upper left wall part, and in the range from the upper end part of the upper right wall part to a position lowered by 200 mm along the upper right wall part The LED-illuminated road sign for a pedestrian crossing / bicycle crossing belt according to any one of claims 1 to 4 , wherein the LED is not disposed. The LED is
On the inner surface side of the lower wall portion, the interval between the centers of the adjacent LEDs is set as a predetermined interval within a range of 30 to 40 mm, and at least 18 from the center portion of the lower wall portion, and symmetrically, and In the central portion in the short direction of the lower wall portion, linearly arranged along the longitudinal direction of the lower wall portion,
On the inner surface side of the upper left wall portion, the distance between the centers of the adjacent LEDs is in the range of 30 to 40 mm from a position lower than the upper end portion by a predetermined distance within the range of 200 to 320 mm along the upper left wall portion. As a predetermined interval, at least 9, at the center portion in the short direction of the upper left wall portion, linearly arranged along the longitudinal direction of the upper left wall portion,
On the inner surface side of the upper right wall portion, the distance between the centers of the adjacent LEDs is in the range of 30 to 40 mm from a position that is lower than the upper end portion by a predetermined distance in the range of 200 to 320 mm along the upper right wall portion. The at least nine predetermined intervals are arranged in a straight line along the longitudinal direction of the upper right wall portion at the center portion in the short direction of the upper right wall portion. LED internally illuminated road signs for pedestrian crossings and bicycle crossings.   The number of LEDs arranged in the lower wall portion is in a range of 18 to 24, and the number of LEDs arranged in the upper left wall portion and the upper right wall portion is in a range of 9 to 12, respectively. LED internally illuminated road signs for pedestrian crossings and bicycle crossings as described in. The peripheral wall portion includes a frame body having a substantially pentagonal cylindrical shape on the outer surface side,
The frame body has a main body wall portion formed in a plate shape along the front-rear direction, and a channel having an inverted U-shaped cross section that is disposed on both front and rear edges of the main body wall portion and projects inward of the sign main body. And comprising a part,
The light reflecting material is composed of a rigid plate-like substrate and a light reflecting layer provided on the inner surface of the substrate, and an inner surface protruding inward in the channel portion before and after the peripheral wall portion is attached to a mounting seat As attached to the channel part,
A plurality of the LEDs are arranged in parallel on the LED substrate, and the LED substrate is attached to the inner surface side of the light reflecting material disposed on the upper left wall portion, the upper right wall portion, and the lower wall portion, respectively. As well as
A plurality of electrical devices other than the LED for road signs are built in the sign body,
The outer wall side is disposed so that the electric device is closer to the inner surface of the main body wall portion than the inner surface of the channel portion so as to suppress the protruding amount from the inner surface of the channel portion, and the peripheral wall portion Attached to the
8. The device according to claim 1, wherein any one of the plurality of electrical devices is disposed with an inner surface side protruding from an insertion hole provided in the light reflecting material. LED internally illuminated road signs for pedestrian crossings and bicycle crossings as described in. As the configuration in which the LED is not disposed on the left side wall and the right side wall,
At least one of the plurality of electric devices has an outer surface side at least one of the left-side wall portion and the right-side wall portion so as to suppress an amount of protrusion from the inner surface of the channel portion from the inner surface of the channel portion. 9. The LED-illuminated road sign for a pedestrian crossing / bicycle crossing band according to claim 8, wherein the LED inner-lit road sign for a pedestrian crossing / bicycle crossing band is attached to the left side wall or the right side wall so as to approach the inner surface of the main body wall. An illumination part for illuminating on the road is attached to the lower wall part so that the whole projects below the sign body,
10. The LED-illuminated road sign for a pedestrian crossing / bicycle crossing band according to claim 1, wherein the illumination unit uses an LED as a light source. 11.   11. The pedestrian crossing according to claim 10, wherein the illuminating unit is attached to the lower surface side of the lower wall portion through universal joint means disposed on the lower surface side of the lower wall portion. LED internally illuminated road sign for bicycle crossing.

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