JP3250010B2 - Self-luminous gaze guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-luminous line-of-sight gaze guide installed near a road and flashing at night to guide the line of sight of a vehicle driver.

[0002]

2. Description of the Related Art Conventionally, a self-luminous gaze guide, which is installed on a road with a lot of undulations and curves and draws a driver's attention and guides a gaze, is provided on a sign surface of a case body attached to an upper end of a pillar. , A retroreflector that reflects headlight light in the incident direction, and a light emitter that emits light forward in the horizontal direction,
In the daytime, a power storage unit such as a storage battery is charged by electromotive force of a solar cell provided on the top of a case body, and at night, a light-emitting body is driven to blink by using the power storage unit as a power source (for example, Japanese Patent Application Laid-Open No. 241206).

[0003]

However, in such a self-luminous gaze guide having a conventional structure, the solar cell is subjected to rain,
A dedicated cover is used to protect from snow and the like, and there has been a problem that the configuration is complicated, such as the necessity of a dedicated cover and a waterproof structure. In addition, there is a problem in that the snow on the top of the case body impedes the incidence of sunlight on the solar cell.

In a self-luminous gaze guide, a general-purpose red light-emitting diode is generally used as a luminous body.
At night, a red light was emitted to alert the user. On the other hand, in a non-light-emitting type gaze guide that does not include a light source and uses only a retroreflective plate, a white retroreflective plate is used on the left side of the road facing the vehicle.

[0005] Therefore, a self-luminous gaze guide that can improve the alerting effect by using the retroreflective plate and the illuminant in the same color tone and improving the alerting effect by the white light emission of the illuminant in addition to the white reflection of the headlight light is provided. Was desired.

[0006] A high-luminance white light-emitting diode is most suitable for a white light-emitting body of a self-luminous device in which the power consumption is a problem. However, white light emitting diodes require a higher applied voltage than red light emitting diodes.

[0007] Therefore, in general, the output of a power storage unit charged by a solar cell is boosted using a boosting circuit including an oscillation circuit, a transistor, a coil, and the like, to obtain a high voltage for driving a white light emitting diode. However, the booster circuit is complicated, and there is a problem that the booster circuit itself consumes a large amount of power.

When an electric double layer capacitor having a long service life is used for a power storage unit, it is necessary to connect a plurality of electric double layer capacitors in series in order to obtain a high voltage. Electric double layer capacitors are unsuitable for charging in series connection due to their electrical characteristics, and thus it has been difficult to configure a high-voltage power supply using an electric double layer capacitor in a self-luminous device.

[0009] The present invention has been made in view of the above, and an object of the present invention is to provide a self-luminous gaze guide having a novel installation structure of a solar cell. An object of the present invention is to provide a power supply circuit of a self-luminous device that includes a power supply and can be charged more easily than a solar cell.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a self-luminous gaze guide according to a first aspect of the present invention is provided on a sign surface and has a headlight light incident from a vehicle. Retroreflective plate capable of reflecting light in the incident direction, a luminous body provided on the sign surface and capable of emitting light in a substantially horizontal direction, a solar cell generated by sunlight, and a storage battery charged by the solar cell A self-luminous line-of-sight inductive target comprising a body and a blinking control circuit that controls blinking of the light-emitting body using the power storage unit as a power source, wherein the retroreflective plate reflects substantially horizontal incident light in the incident direction. The solar cell is disposed behind the prismatic retroreflective plate, and is formed of a prismatic retroreflective plate capable of transmitting incident light obliquely upward from the rear. Penetrate the board It is a self-luminous delineator characterized by comprising provided to be electromotive by sunlight.

According to a second aspect of the present invention, there is provided a self-luminous gaze guide in accordance with the first aspect of the present invention.
A self-luminous line-of-sight gaze guide that is disposed substantially parallel to the prism-type retroreflective plate.

A self-luminous gaze guide according to a third aspect of the present invention is the self-luminous gaze guide according to any one of claims 1 and 2, wherein the sign surface is provided so as to face substantially in the opposite direction. And a self-luminous line-of-sight gaze guide, wherein a prism-shaped retroreflective plate and a solar cell are provided on the sign surfaces in both directions, respectively.

According to a fourth aspect of the present invention, there is provided a self-luminous gaze guide in accordance with any one of the first, second, and third aspects, wherein the luminous body includes the prism-shaped recursive guide. The self-luminous gaze guide mark is provided at a central portion of the reflector, and a part of the luminous body light is formed so as to be radiable through the prism type retroreflector.

According to a fifth aspect of the present invention, there is provided a power supply circuit for a self-luminous device.
A white light emitting diode that can emit light in a substantially horizontal direction,
A pair of solar cells generated by sunlight, and a pair of electric double-layer cores respectively charged by the pair of solar cells.
Comprising a capacitor, a flashing control circuit for blinking control the white light emitting diode, a solar cell of the pair, it
And the corresponding electric double layer capacitor via a separate charging circuit
While charging the capacitor, the pair of electric double layer capacitors
Capacitors will be connected in series, the white light by the power of the series connected said pair of electric double-layer capacitor
Diode is a power supply circuit of the self-emission type device, wherein a Ru driven blinking.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

In the figure, self-luminous gaze guide marks denoted by reference numeral 1 are prism-shaped retroreflectors 15 and 25 (hereinafter referred to as retroreflectors 15 and 25, respectively) provided on marking surfaces 11 and 21 of case body 10, respectively. Abbreviations), and the luminous bodies 20 provided at the central portions of the retroreflectors 15 and 25, respectively.
30, solar cells 33A, 33B provided behind the retroreflectors 15, 25, respectively, and solar cells 33A, 33
B includes power storage units 36A and 36B that are charged via charging circuits 35A and 35B, respectively, and a blink control circuit 38 that controls the light-emitting units 20 and 30 to blink.
36B is configured to be connected in series.

The case main body 10 is made of a cylindrical aluminum die-cast, and the retroreflectors 15 and 25 are fixed in such a manner as to face the respective vertical surfaces substantially in opposite directions.
0, protects electrical components such as solar cells 33A and 33B, power storage units 36A and 36B, and is provided with a mount 13 for attachment to a support post 14. And
The retroreflective plate 15 side forms the sign surface 11 and the retroreflective plate 2
On the 5th side, a marking surface 21 is formed.

The retroreflective plate 15 is a prism element which, when illuminated by a headlight at night, reflects the light in the incident direction so that it can be confirmed from the illuminated position and transmits sunlight rays obliquely incident from above. It is a well-known prism type retroreflective plate composed of an aggregate, has many prisms 16 of three mirrors on the back side, and is formed of a colorless transparent plastic material.

The retroreflective plate 15 has its prism 1
The element assembly of No. 6 has a dividing line C radiating from the center (FIG. 1,
5 (indicated by a line C in FIG. 5), the lens is divided into six parts, and a lens part 17 in the form of a front lens and a luminous body supporting part 18 to which the luminous body 20 can be attached are provided at the center. The retroreflective plate 25 has the same configuration as the retroreflective plate 15 except that the retroreflective plate 25 is made of an orange transparent plastic material.

The retroreflective plates 15 and 25 are provided on the case main body 10 with their outer peripheral edges interposed with the surface substrates 12 and 12, and by using a sealing material or the like (not shown), the waterproofing is maintained and the vertical edges are maintained. It is fixed in a shape. In this example, the retroreflective plate 15 of the sign surface 11 and the retroreflective plate 25 of the sign surface 21 are formed in a non-parallel state of about 10 degrees as shown in FIG.

The luminous body 20 has, for example, a rated voltage of 3.4 V.
High-intensity white light emitting diode, and a retroreflective plate 1
5 is attached to the illuminant support 18 of FIG. 5, and emits most of the white light of the illuminant 20 to the front of the display surface 11 through the lens unit 17 and a part of the white light is incident on the retroreflective plate 15; It is formed so as to radiate forward through the retroreflector 15.

The luminous body 30 has a rated voltage of 2.4 V, for example.
High-brightness orange light-emitting diode, and a retroreflective plate 2
5, the majority of the color light of the light emitter 30 is emitted from the marking surface 21 via the lens portion 17 of the retroreflector 25, and a part of the color light is incident on the retroreflector 25. And, it is formed so as to radiate through the retroreflector 25.

The solar cells 33A and 33B are composed of photoelectric elements having the same photovoltaic effect, and reference numerals A and B represent different circuits of two series. In the following, one of the (
Abbreviations). The same applies to the other electrical components indicated by A and B.

The solar cells 33A (33B) are mounted on the surface substrate 12 (12), respectively,
It is arranged in parallel with (25), is protected from the outside air, and is formed so as to be generated by sunlight passing through the retroreflective plate 15 (25).

The electromotive force of one of the solar cells 33A is supplied to one of the backflow preventing diode 34A and the charging circuit 3A.
5A, the one power storage unit 36A is charged, and the electromotive force of the other solar cell 33B is supplied to the other power storage unit 36B via the other reverse current blocking diode 34B and the charging circuit 35B.
It is formed to be charged to.

The charging circuit 35A (35B) stores the electromotive force of the solar cell 33A (33B) in a power storage 36A (36B).
B) a direct connection charging circuit that can directly charge the battery, and a power storage unit 36A
A constant-voltage charging circuit that charges the battery (36B) while protecting it from overvoltage, and a voltage monitoring circuit that can select one of the above-described direct-connection charging circuit and the constant-voltage charging circuit by the terminal voltage of the power storage unit 36A (36B). When the terminal voltage of the power storage unit 36A (36B) is less than a certain value, the battery is charged through a direct connection charging circuit, and when the terminal voltage is more than a certain value, it is charged through a constant voltage charging circuit.

In this example, the power storage 36A (36B) is 6
0F or more electric double layer capacitor
A is connected to the negative electrode side of A and the positive electrode side of power storage unit 36B, and is configured to supply high-voltage power connected in series from the positive electrode side of power storage unit 36A and the negative electrode side of power storage unit 36B. .

The flicker control circuit 38 is operated by a day / night discriminating circuit 37 for detecting the electromotive voltage of the solar cell 33B and discriminating between day and night. 30 is formed. Reference numeral 39 denotes a resistor for adjusting the current of the luminous body 30, and reference numeral E denotes diodes 34A and 34A.
B, an electric circuit assembly including charging circuits 35A and 35B, day / night determining circuit 37, blinking control circuit 38, and the like.

Next, the operation of the self-luminous gaze guide 1 constructed as described above will be described.

The self-luminous gaze guide 1 includes a case body 10.
A predetermined height is set via the support 14, and the marking surface 11 is
Installed along the road facing the direction. At this time the marking surface21
Faces the opposite lane in a substantially opposite direction. At this time,
The top of the case body 10 that receives both rain and snow
No need for a waterproof structure as in the conventional configuration, maintaining high weather resistance.
With the snow on the top of the case body 10
There is no obstruction of sunlight. In the daytime with sunshine
Is a retroreflective plate as shown by the solid line S in FIG.
15 (25) A retroreflective plate that is incident obliquely from above the surface
15 (25) through one surface of the prism 16 (16).
To the solar cell 33A (33B)
Light enters from obliquely upward.

The electromotive forces of the solar cells 33A and 33B are supplied to the diodes 34A and 34B and the charging circuit 35, respectively.
Power is stored in power storage units 36A and 36B via A and 35B, respectively. In the daytime, even if the electromotive force of the solar cells 33A, 33B decreases due to rainy weather, cloudy weather, shade, or the like, the charging of the power storage units 36A, 36B is completed in the daytime, and when the sunshine is large, the full charge is completed in a short time. Become.

At this time, the charging circuits 35A and 35B charge directly at the direct-connection charging circuit portions, respectively, and perform constant-voltage charging by preventing a predetermined voltage or more from being applied to the power storage bodies 36A and 36B by the constant-voltage charging circuit portion. Do. When the battery is fully charged, the constant voltage charging circuit portion continues charging for compensating for a voltage drop due to self-discharge of the power storage units 36A and 36B. The day / night determination circuit 37 determines daytime based on the electromotive voltage of the solar cell 33B, and turns off the blinking control circuit 38.

Incidentally, according to the experimental example using the artificial solar illuminator, the ratio of the sunlight passing through the retroreflective plate 15 (25) and reaching the solar cells 33A (33B) is determined according to the experimental example.
In the case where 1 ( 21 ) is incident on light from an obliquely upper front at 45 degrees, the case where sunlight does not directly enter the solar cell 33 </ b> A (33 </ b> B) without the retroreflective plate 15 (25) is taken as 100.
Retroreflective plate 15 (25) under the same conditions as the configuration of the present embodiment
When there is, the illuminance of about 85% is obtained and the solar cell 33
A (33B) can generate a practically sufficient electromotive force.

Further, in another experimental example using a prototype, when the sign surface 11 faces (1) directly in the southeast direction and (2) similarly in the southeast direction in fine weather in winter,
(3) The power storage unit 36 also facing directly east
The time required for full charge of A and 36B is (1) 5
Time, (2) 5 hours and 15 minutes, and (3) 4 hours and 58 minutes.

As described above, the power storage units 36A and 36B
Means that the battery is properly and quickly charged to a full charge by separate charging systems, and the terminal voltage between the positive electrode of the power storage unit 36A and the negative electrode of the power storage unit 36B becomes a predetermined high terminal voltage.

When the amount of solar radiation decreases in the evening and the electromotive voltage of the solar cell 33B falls below a certain value, the day / night discriminating circuit 37 discriminates the nighttime, and the blinking control circuit 38 is activated.

Thus, the blinking control circuit 38 outputs the high-voltage power of the power storage units 36A and 36B connected in series at a predetermined blinking cycle, and the light-emitting bodies 20 and 30 are white and orange in the same cycle, respectively. Repeat flashing.

Most of the light from each of the light emitters 20 (30) is emitted forward from the lens portion 17 (17), and a part of the light travels through the retroreflector 15 (25), and the prism 16 (1).
The light is reflected at 6) and emitted forward. Therefore, the marking surface 11
In, the white light of the light emitting body 20 flashes, and a distant place where the headlight light does not reach indicates the left side of the road to the vehicle driver. On the sign surface 21 side, the orange light of the light emitting body 30 blinks, and the vehicle driver traveling on the opposite lane is marked on the right side of the road.

When the self-luminous gaze guide 1 is illuminated by the headlight, the light is reflected by the retroreflective plate 15 (2).
The light is incident from almost the front of 5). At this time, the incident headlight is totally reflected by the prism 16 (16) of the retroreflective plate 15 (25) as shown by a two-dot chain line H in FIG. 6, and is reflected in a direction parallel to the incident light. You.

Accordingly, the front surface of the retroreflective plate 15 on the marking surface 11 is white and reflected, and indicates to the vehicle driver near the left road. On the retroreflection plate 25 of the marking surface 21 , the front surface is turned orange and reflected, and the vehicle driver is marked on the right side of the road.

It should be noted that the present invention is not limited to the above description and examples of the drawings, and the embodiments can be modified without departing from the technical idea of the present invention. For example, the retroreflection plate 15 (25) may be provided with a transmission part without the prism 16 partially. In addition, the solar cells 33A and 33B may be disposed on both the sign surfaces 11 and 21 by dividing them by half.

Further, both the sign surfaces 11 and 21 may have the same color tone and the same color light emission, or may have only one surface.

[0043]

As described above, the self-luminous gaze guide according to the present invention does not require a special cover on the top of the case body to protect the solar cell from rain, snow, etc., thus reducing the number of parts. As a result, the waterproof structure for protecting the electric components can be simply configured, the high weather resistance can be maintained, and the obstruction of sunlight incident due to snow and the like can be avoided.

In a power supply circuit of a self-luminous device,
A high-voltage power supply capable of driving a white light-emitting diode or the like because it is configured to charge a pair of power storage units from a pair of solar cells via separate charging circuits and connect only a pair of power storage units in series. And is suitable for a high-voltage power supply using an electric double layer capacitor, and has an effect that a power supply for a self-luminous device having a long service life can be formed.

[Brief description of the drawings]

FIG. 1 is a front view of a self-luminous gaze guidance mark according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a front view showing a state where a prism type retroreflective plate of FIG. 1 is removed.

FIG. 5 is a partially enlarged view of the prismatic retroreflective plate shown by a two-dot chain line B in FIG. 1 as viewed from the inside.

FIG. 6 is an explanatory sectional view showing the incidence and reflection of light by partially enlarging the prism type retroreflective plate of FIG. 3;

FIG. 7 is a circuit diagram showing a configuration of a self-luminous eye gaze guide according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-luminous gaze guidance mark 11, 21 Marking surface 15, 25 Prism type retroreflective plate 20, 30 Light emitting body 33A, 33B Solar cell 35A, 35B Charging circuit 36A, 36B Power storage 38 Flashing control circuit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E01F 9/00

Claims (5)

(57) [Claims] 1. A retroreflective plate provided on a sign surface and capable of reflecting headlight light incident from a vehicle in an incident direction; a illuminant provided on the sign surface and capable of emitting light in a substantially horizontal direction; A self-luminous line-of-sight gaze guide comprising: a solar cell generated by sunlight; a power storage unit charged by the solar cell; and a flashing control circuit that flashes the luminous body using the power storage unit as a power source. The retroreflective plate is formed of a prismatic retroreflective plate that is formed so as to be able to reflect substantially horizontal incident light in the incident direction, and that is capable of transmitting incident light obliquely upward from the rear. A self-luminous line-of-sight gaze guide, which is provided behind the prismatic retroreflective plate and is provided so as to be able to generate electricity by sunlight passing through the prismatic retroreflective plate. 2. The self-luminous gaze guide according to claim 1, wherein the solar cell is disposed substantially in parallel with the prismatic retroreflective plate. . 3. The self-luminous line-of-sight guidance sign according to claim 1, wherein the sign surface is provided facing substantially in the opposite direction, and the sign surface is provided on each of the sign surfaces in both directions. A self-luminous line-of-sight gaze guide comprising a prism-shaped retroreflective plate and a solar cell. 4. The self-luminous gaze guide according to claim 1, wherein the luminous body is disposed at a central portion of the prism-type retroreflective plate. A self-luminous line-of-sight gaze guide, wherein a part of the luminous body light is formed so as to be radiable via the prism-type retroreflective plate. 5. White light emission capable of emitting light in a substantially horizontal direction.
A diode , a pair of solar cells generated by sunlight, and a pair of solar cells respectively charged by the pair of solar cells.
Together with the electric double layer capacitor, and a flash control circuit for blinking control the white light-emitting diodes, solar cells of the pair, respectively, when charging the corresponding electric double layer capacitor through a separate charging circuit the <br/>, said pair of electric double layer capacitors, which are connected together in series, wherein the power of the series connected said pair of electric double-layer capacitor this white light emitting diode Ru driven blinking <br A power supply circuit for a self-luminous device.