JP2008184845A - Light emitting unit and bumping post - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting unit capable of providing excellent visibility, even if a light emitter is flashed. <P>SOLUTION: This light emitting unit 4 stores electric power generated by a solar battery 75 in a storage battery 10, and enables the light emitter 5 to emit the light by supplying its stored electric power to the light emitter 5 arranged in a cover 6. In this light emitting unit 4, a luminous sheet 8 for passing the light radiated from the light emitter 5 and emitting the light by storing its light, is arranged inside the cover 6. Thus, the light can be always emitted from the light emitting unit 4 even if the light emitter 5 is flashed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a light emitting unit and a vehicle stop column provided with the light emitting unit.

2. Description of the Related Art Conventionally, there is known a light emitting unit that stores electric power generated by a solar battery in a storage battery and supplies the stored electric power to a light emitter disposed in a cover so that the light emitter emits light. For example, Patent Literature 1 discloses a vehicle stop column in which such a light emitting unit is attached to an upper portion of a column body.
JP-A-2001-283605

  In such a light emitting unit, since the amount of power that can be generated by a solar cell in the daytime is limited, the light consumption speed is reduced by blinking the light emitter at night. ing.

  However, when the light emitter is blinked, the visibility is inferior compared to the case where the light emitter is always lit. Therefore, it is desired to improve visibility.

  In view of such circumstances, an object of the present invention is to provide a light emitting unit capable of obtaining good visibility even when the light emitter is blinked, and a vehicle stop column provided with the light emitting unit.

  The invention according to claim 1 is a light emitting unit for storing electric power generated by a solar cell in a storage battery and supplying the stored electric power to a light emitter disposed in a cover so that the light emitter emits light. And the phosphorescent sheet which transmits the light radiated | emitted from the said light-emitting body, and accumulate | stores the light and is light-emitted is arrange | positioned inside the said cover.

  According to this configuration, since the phosphorescent sheet that transmits the light emitted from the light emitter is disposed inside the cover, when the light emitter is turned on, the light emitted from the light emitter passes through the phosphorescent sheet and the cover. On the other hand, when the light emitter is turned off, the brightness is secured for a while by the light emission of the phosphorescent sheet. Therefore, it is possible to always emit light from the light emitting unit even when the light emitter is blinked, and good visibility can be obtained.

  According to a second aspect of the present invention, in the light emitting unit according to the first aspect, the light emitter is composed of an ultraviolet light emitting type light emitting diode that emits light containing a relatively large amount of ultraviolet light. It is.

  According to this configuration, the phosphorescent sheet can be efficiently excited and stored with ultraviolet rays emitted from the light emitter.

  For example, as in claim 3, the cover has a cylindrical peripheral wall, and the phosphorescent sheet is disposed in a cylindrical shape along the inner peripheral surface of the peripheral wall. be able to.

  According to a fourth aspect of the present invention, in the light emitting unit according to the third aspect, the peripheral wall has a cylindrical shape extending vertically, and the light emitter emits light upward at a substantially center in the peripheral wall in a plan view. It is arranged in a radiating posture, and a reflector that reflects light emitted upward from the light emitter so as to spread radially is provided above the light emitter in the cover. To do.

  Conventionally, when a light emitting diode is used as a light emitter, light is emitted from a plurality (4 to 6) of light emitting diodes in the lateral direction so that light is emitted radially from the light emitting unit. It arrange | positions with the attitude | position which carries out at equal intervals on the circumference (refer patent document 1). On the other hand, according to the invention according to claim 4, the light emitter formed of the light emitting diode is disposed at a substantially central position in the peripheral wall in a plan view so as to emit light upward, and above the light emitter. Is provided with a reflector that reflects the light emitted upward from the light emitter so that it spreads radially laterally, so that even if the number of light emitters is small, light is emitted radially from the light emitting unit. Will come to be. Therefore, it is possible to reduce the power consumption by reducing the number of light emitters than in the prior art.

  The invention according to claim 5 includes the light-emitting unit according to any one of claims 1 to 4 and a column body in which a lower part is embedded in the ground and the light-emitting unit is attached to an upper part. It is a car stopper prop.

  According to this configuration, it is possible to make the driver, a passerby, and the like effectively recognize the presence of the vehicle stop column by the light emitting unit having good visibility.

  As described above, according to the present invention, good visibility can be obtained even if the light emitter is blinked.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a vehicle stop column 2 including a light emitting unit 4 according to an embodiment of the present invention. The vehicle stop column 2 includes a light emitting unit 4 and a column main body 3 with a lower portion embedded in the ground 1 and an upper portion to which the light emitting unit 4 is attached. In addition, the distance from the ground 1a of the stop column 2 to the upper end of the light emitting unit 4 is, for example, about 850 mm.

  The column main body 3 has a circular cylindrical shape extending in the vertical direction (see FIG. 3).

  Specifically, as shown in FIGS. 2 and 3, the light emitting unit 4 includes a cover 6 having a hollow inside, a light emitter 5 that emits light inside the cover 6, and a column body 3. And a support 9 disposed therein. In addition, a first reflector 7A, a second reflector 7B, a solar battery 75, and a phosphorescent sheet 8 are disposed inside the cover 6, and the storage battery 10 and the controller 11 are supported on the support 9. Has been. The light emitting unit 4 stores the electric power generated by the solar cell 75 in the storage battery 10 and supplies the stored electric power to the light emitter 5 disposed in the cover 6 to cause the light emitter 5 to emit light.

  The cover 6 is made of a light-transmitting material, and has a circular plate-like bottom wall 63 placed on the upper end surface of the column main body 3, and upward while reducing the diameter from the peripheral edge of the bottom wall 63. It has a tapered cylindrical peripheral wall 62 that extends, and a dish-shaped ceiling wall 61 that closes the space inside the peripheral wall 62 from above and that rises slightly upward in the center.

  The light emitter 5 emits light when energized. In the present embodiment, the light emitter 5 is composed of a light emitting diode (LED) that emits light containing a relatively large amount of ultraviolet light. The light emitter 5 is fixed to the bottom wall 63 so as to penetrate the central portion of the bottom wall 63 of the cover 6 and emits light directed upward. In other words, the light emitter 5 is arranged at a substantially central position in the peripheral wall 62 in a plan view so as to emit light upward. In addition to the light emitting diode, the light emitter 5 may employ a fluorescent lamp, an incandescent lamp, or the like.

  The first reflector 7 </ b> A has a conical shape that is pointed downward toward the light emitter 5, and the size thereof is set to be approximately the same as that of the ceiling wall 61 of the cover 6 in plan view. 7 A of 1st reflectors are being fixed to the lower surface of the ceiling wall 61 of the cover 6, and the taper surface 7a which faces downward is used as the reflective surface which can reflect light. For this reason, the light emitted upward from the light emitter 5 is reflected by the tapered surface 7a of the first reflector 7A and spreads radially in the lateral direction.

  The second reflector 7B has a circular plate shape having the same size as the first reflector 7A in plan view, and is fixed to the upper surface of the bottom wall 63. A through hole is provided in the center of the second reflector 7B, and the light emitter 5 is inserted through the through hole. The upper surface 7b of the second reflector 7B is a reflective surface capable of reflecting light. For this reason, even if the light reflected by the first reflector 7A is incident on the upper surface 7b of the second reflector 7B, it is reflected by the upper surface 7b and guided to the outside.

  The phosphorescent sheet 8 has a strip shape made of a material having a phosphorescent property capable of storing light and emitting light. Moreover, the thickness of the phosphorescent sheet 8 is set thin enough to have translucency. The phosphorescent sheet 8 is disposed while being curved in the longitudinal direction so as to close the gap between the peripheral portions of the first reflector 7A and the second reflector 7B, thereby allowing the inner side of the peripheral wall 62 of the cover 6 to be disposed. Are arranged in a cylindrical shape along the inner peripheral surface of the peripheral wall 62.

  Since the phosphorescent sheet 8 has translucency, light emitted from the light emitter 5 and reflected by the tapered surface 7a of the first reflector 7A or the upper surface 7b of the second reflector 7B is incident on the phosphorescent sheet 8. Then, the light passes through the phosphorescent sheet 8 and then passes through the peripheral wall 62 and is emitted to the outside. Furthermore, the phosphorescent sheet 8 emits light by storing the light incident on the phosphorescent sheet 8 while transmitting the light. That is, when the light emitter 5 is turned on, the light emitted from the light emitter 5 is emitted to the outside through the phosphorescent sheet 8 and the peripheral wall 62, while when the light emitter 5 is turned off, the light emitted from the phosphorescent sheet 8 is emitted. Brightness will be secured for a while.

  The solar cell 75 generates electric power by converting light energy into electric energy, and has a rectangular panel shape in plan view. The solar cell 75 is disposed below the ceiling wall 61 of the cover 6 by being embedded in the upper surface of the first reflector 7A.

  The support 9 is fixed to the lower surface of the bottom wall 63 of the cover 6 and has two upper and lower shelves. And the storage battery 10 is supported by the lower shelf, and the control part 11 is supported by the upper shelf.

  The storage battery 10 is connected to the solar battery 75 by a wiring member 78, and the power generated by the solar battery 75 is stored in the storage battery 10. Further, the storage battery 10 supplies the stored power to the light emitter 5 via the control unit 11.

  The control part 11 is comprised by the control board, and controls on / off of the electricity supply to the light-emitting body 5. FIG. Specifically, the control unit 11 turns off the current to the light emitter 5 during the daytime to turn off the light emitter 5, and turns on or off the current to the light emitter 5 at night so that the light emitter 5 is turned off. The light emitter 5 is blinked by alternately switching on and off the light emitter 5 so that the light is turned off for the second set time after the first set time is turned on. Here, the first set time is the time from the start of lighting of the light emitter 5 until the phosphorescent sheet 8 sufficiently stores the light emitted from the light emitter 5, and the second set time is the light emitter 5. Is the time from when the light is turned on until the brightness obtained by the light emission of the phosphorescent sheet 8 falls below a predetermined luminance.

  In the light emitting unit 4 of the present embodiment, since the phosphorescent sheet 8 is disposed inside the cover 6, it is possible to always emit light from the light emitting unit 4 even when the light emitter 5 is blinked, and good visual recognition is possible. Sex can be obtained.

  Moreover, since the light emitter 5 is composed of an ultraviolet light emitting type light emitting diode, the phosphorescent sheet 8 can be efficiently excited and stored by the ultraviolet rays emitted from the light emitter 5.

  Furthermore, the light emitter 5 composed of a light emitting diode is arranged in a position to emit light upward at an approximate center in the peripheral wall 62 in plan view, and above the light emitter 5 upward from the light emitter 5. Since the first reflector 7A is provided to reflect the emitted light so as to spread radially in the horizontal direction, even if the number of the light emitters 5 is small (one or two), the light is emitted radially from the light emitting unit 4. The light will be emitted. Therefore, it is possible to reduce the power consumption by reducing the number of light emitters than in the prior art.

  Moreover, if it is the vehicle stop support | pillar 2 provided with this light emission unit 4, the presence of the vehicle stop support | pillar 2 can be recognized effectively with respect to a driver, a passerby, etc. by the light emission unit 4 which has favorable visibility.

  In the above-described embodiment, the light-emitting unit 4 forms the vehicle stop column. However, the present invention can be applied to, for example, a light-emitting unit for guidance embedded in the ground. In this case, for example, the light emitter 5 and the control unit 11 may be disposed inside the casing that opens upward, and the opening may be closed with a cover that has the phosphorescent sheet 8 attached to the back surface.

  Moreover, the solar cell 75 or the storage battery 10 does not need to be disposed in the cover 6 or the column main body 3, and may be attached to, for example, the outer surface of the column main body 3.

  Furthermore, the arrangement | positioning attitude | position of the light emission unit 4 can be selected suitably.

It is a front view of the car stop pillar provided with the light emitting unit concerning one embodiment of the present invention. It is a top view of a vehicle stop pillar. It is the III-III sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underground 2 Car stop pillar 3 Prop body 4 Light emission unit 5 Light emitter 6 Cover 7A 1st reflector 7B 2nd reflector 75 Solar cell 8 Phosphorescent sheet 10 Storage battery

Claims (5)

A light emitting unit that stores electric power generated by a solar battery in a storage battery, and supplies the stored electric power to a light emitter disposed in a cover so that the light emitter emits light,
A light-emitting unit that transmits light emitted from the light-emitting body and stores and emits the light is disposed inside the cover.   The light emitting unit according to claim 1, wherein the light emitter is configured by an ultraviolet light emitting type light emitting diode that emits light containing a relatively large amount of ultraviolet light.   The light emission according to claim 2, wherein the cover has a cylindrical peripheral wall, and the phosphorescent sheet is disposed in a cylindrical shape along an inner peripheral surface of the peripheral wall. unit.   The peripheral wall has a cylindrical shape extending vertically, and the light emitter is disposed in a substantially central position in the peripheral wall in a plan view so as to emit light upward, and above the light emitter in the cover. 4. The light emitting unit according to claim 2, further comprising a reflector that reflects the light emitted upward from the light emitter so as to spread radially in a lateral direction.   A vehicle stop column comprising: the light emitting unit according to any one of claims 1 to 4; and a column body in which a lower part is embedded in the ground and to which the light emitting unit is attached.

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