JP2004270201A - Self-luminous sight line guide sign - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-luminous sight line guide sign having small power consumption and capable of lightening a burden imposed on the sight of a road user. <P>SOLUTION: In the case a luminous element is emitted, a time interval T enough to enable the road user to make visual confirmation is provided between the maximum luminance time t2, the luminescence starting time t1 and/or the luminescence end time t3 to compare two cases when a light is suddenly turned on and off between the maximum luminance time t2 and the lights-out time, for example, the light is in a state of being luminous for a time longer than before, and since variations in the luminance do not suddenly occur, the burden imposed on visual sensation of the road user can be lightened. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a self-luminous line-of-sight gaze guide installed around a road and guiding the line of sight of a road user by blinking light emission.
[0002]
[Prior art]
A self-luminous line-of-sight guide that includes a light-emitting element in a line-of-sight guide and turns on and off the light-emitting element by a timer circuit or the like is well known.
[0003]
Further, in Patent Document 1, a light-emitting body capable of emitting light substantially horizontally forward, a solar cell provided at an upper part of a case main body, an electric double-layer capacitor for storing electromotive force of the solar cell, Charge control means for controlling the electromotive force to charge the electric double layer capacitor, a blinking control circuit for outputting a drive current for blinking the luminous body using the electric double layer capacitor as a power supply, and a pulse for the drive current An oscillation circuit that outputs a pulse current that is modulated and pulse-modulated, and a power feedback unit that converts a part of the pulse current into feedback power and feeds back to the electric double layer capacitor, wherein the power feedback unit includes: A current detecting circuit for detecting the pulse current; and a rectifying and amplifying circuit for rectifying and amplifying a detection output of the current detecting circuit, wherein the light emitting element is turned on by the pulse current. With driven, the self-luminous delineator which outputs are fed back to the electric double layer capacitor formed by the available storage configured of the rectifier amplifying circuit is disclosed.
[0004]
[Patent Document 1]
JP-A-9-41330
[Problems to be solved by the invention]
However, the above-mentioned known self-luminous line-of-sight gaze guides are simply turned on and off, and the power consumption at the time of light emission is large, and the degree of freedom of installation is restricted in terms of power.
[0006]
In addition, the self-luminous gaze guide as described in Patent Literature 1 can reduce power consumption, but suddenly emits light and turns off light, which may impose a burden on road users' vision.
[0007]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a self-luminous line-of-sight gaze guide that consumes a small amount of power and can reduce a burden on a road user's vision.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, the self-luminous gaze guide mark according to the present invention includes a light-emitting element, and is a gaze guide mark for guiding a road user's gaze by blinking the light-emitting element. A time interval is provided between the light emission start time and the light emission start time and / or the light emission end time so that a road user can visually recognize the time.
[0009]
According to the present invention, at the time of light emission of the light emitting element, a time interval that can be visually recognized by a road user is provided between the time of maximum luminance and the time of light emission start and / or light emission end, so that the maximum luminance Compared to the case where the light is turned on and off suddenly between the time of turning off and the time of turning off the light, for example, it is possible to make the state that the light is emitted for a longer time even with the same power amount, and the change in luminance is not abrupt. Therefore, it is possible to reduce the load on road users' sight.
[0010]
In addition, the self-luminous gaze guide according to the present invention further includes a power supply device for supplying a current related to light emission of the light emitting element, a wavelength generating circuit for generating a signal related to a specific wavelength, and light emission of the light emitting element by controlling a current value. A current control device for adjusting brightness, wherein the time interval is controlled by the current control device adjusting an amount of current related to light emission of the light emitting element based on a signal emitted from the wavelength generation circuit. If so, it is preferable that the light emission mode at the time of various light emission can be set by the wavelength generation circuit.
[0011]
Further, if the wavelength generation circuit emits a signal that changes the current value of the light emitting element at the time of light emission in a sine wave shape, the transition of the light emission luminance by the light emitting element is made smooth, and it can be seen by the road user. This is preferable because the burden on the user can be further reduced.
[0012]
Further, the self-luminous gaze guide mark according to the present invention further includes a power supply device for causing the light-emitting element to emit light, and a current control pulse circuit for controlling a blinking duty ratio of the light-emitting element, and the time interval is controlled by controlling the blinking duty ratio. Is controlled, it is not necessary to control the current value to set the light emission mode at the time of various light emission, the power loss is reduced, and the control circuit is simplified.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 and FIG. 2 are explanatory diagrams showing a method of emitting light of the self-luminous gaze guide mark according to the present invention. First, FIG. 1 is a block diagram of a device related to light emission. A current from a power supply device B is rectified by a rectifier S to cause a light emitting element 3 to emit light. Thus, the light emission luminance of the light emitting element 3 is controlled.
[0014]
FIG. 2 is a graph showing signals related to the control of the control unit C. First, a signal as shown in a) is generated from the sine wave generation circuit 1 and is attenuated in the light emission current control circuit 2, so that b). As shown in the figure, the current value is controlled, and the light emission mode is changed to a light emission mode in which the light emission luminance changes like a sine wave. When the light emitting element 3 emits light, the maximum luminance time t2, the light emission start time t1, and / or the light emission end time t3 Is provided with a time interval T.
[0015]
Here, the time interval T is preferably 0.1 second to 3 seconds, more preferably 0.3 second to 1 second, which is a time that can be visually recognized by a road user and does not cause a sense of incongruity as a gaze guide. . In addition, the light emission end time t3 and the next light emission start time t1 may be at the same timing, or a time that does not cause a sense of incongruity as the gaze guidance target, for example, a time of about 1 second to 2 seconds may be provided.
[0016]
As the light emitting element 3, a light emitting diode, a halogen lamp, a metal halide lamp, a xenon lamp, a cold cathode tube, a fluorescent tube, or the like may be used. Is preferred.
[0017]
FIG. 3 is a block diagram showing another light emitting method of the self-luminous gaze guidance mark according to the present invention. As in the case of FIG. 1, the current value is controlled by the control unit C to control the light emission luminance of the light emitting element 3. However, the current value at the time of light emission of the light emitting element 3 is constant, and the pulse from the pulse circuit 4 is output. The ON / OFF of the current in the control unit C is performed by a signal.
[0018]
FIG. 4 is a graph specifically showing the transition of the pulse signal from the pulse circuit 4 and the emission luminance. In the light emitting element 3 of the present embodiment, the current value at the time of light emission is constant, but the apparent light emission luminance is changed by the change of the blinking duty ratio of the light emitting element 3. In b), the time between the light emission start time t1 and the light emission end time t3 is substantially equally divided, and the blinking duty ratio D is set by the pulse circuit in each of the divided unit times t. The blinking duty ratio D is gradually increased from the light emission start time t1, the blinking duty ratio D is set to 100 near the maximum luminance time t2, and the blinking duty ratio D is gradually reduced toward the light emission end time t3. . Due to the change in the blinking duty ratio D, the apparent light emission luminance felt by the road user is set to a light emission mode close to a sine wave with the maximum luminance being the luminance K, as shown in (b).
[0019]
The unit time t may be long enough that the road user does not feel the blink within the unit time t, and is actually blinking because the road user does not feel the blink within the unit time t. Does not appear to be blinking in the appearance of the road user, it appears that the brightness of the light emitting element is changing, and it seems that the apparent light emission luminance is changed without controlling the current value. The burden on the user's vision can be reduced. The unit time t is preferably set to 0.2 seconds or less at which the road user does not perceive blinking even when the blinking duty ratio D is 1, and more preferably 0.01 seconds to 0.1 seconds. is there. In order to change the apparent light emission luminance by changing the blinking duty ratio, the frequency of blinking is higher than in the case of current control or the like. Therefore, it is more preferable to use a light emitting diode as the light emitting element 3.
[0020]
The time interval T as described above may be provided in the light emitting mode as shown in FIG. The one-sided triangular waveform shown in a), the double-roofed triangular waveform shown in b), the integrated waveform shown in c), the differentiated waveform shown in d), and the slope before and after the gradient shown in e) were made gently. By emitting signals and pulses related to the light emission mode, such as a trapezoidal waveform, a semicircular waveform shown in (f), and a semi-cylindrical waveform shown in (g), from the above-described wavelength generation circuit and pulse circuit, light emission according to the application and installation location is obtained. A self-luminous gaze guide having a mode can be easily obtained.
[0021]
【The invention's effect】
According to the present invention, at the time of light emission of the light emitting element, a time interval is provided between the maximum luminance and the start of light emission and / or the end of light emission so that a road user can visually recognize the light. Compared to the case where the light is turned on and off suddenly between the time and the time when the light is turned off, for example, it is possible to make the state that the light is emitted for a longer time even with the same power amount, and the change in the brightness is not sudden Therefore, it is possible to reduce the load on road users' sight.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a device related to light emission of a self-luminous gaze guide mark according to the present invention.
FIG. 2 is a graph showing signal and light emission states of the device shown in FIG.
FIG. 3 is a block diagram showing another example of a device related to light emission of the self-luminous gaze guide mark according to the present invention.
FIG. 4 is a graph specifically showing a transition of a pulse signal from a pulse circuit 4 and emission luminance.
FIG. 5 is a graph showing an example of a light emission mode of the self-luminous gaze guide mark according to the present invention.
[Explanation of symbols]
1 Waveform generation circuit (sine wave generation circuit)
2 light emitting current control circuit 3 light emitting element 4 pulse circuit (light emitting current control pulse circuit)
B Power supply device C Control unit D Flashing duty ratio T Time interval t1 Light emission start time t2 Maximum brightness time t3 Light emission end time t Unit time

Claims (4)

A gaze guide indicator that includes a light-emitting element and guides a road user by blinking the light-emitting element. The light-emitting element emits light between a maximum luminance, a start of light emission, and / or an end of light emission. A self-luminous line-of-sight gaze guide, wherein a time interval is provided for the road user to be able to view. Further, a power supply device that supplies a current related to light emission of the light emitting element, a wavelength generation circuit that generates a signal related to a specific wavelength, and a current control device that adjusts light emission luminance of the light emitting element by controlling a current value, 2. The self-luminous line of sight according to claim 1, wherein the time interval is provided by the current controller adjusting a current amount related to light emission of the light emitting element based on a signal emitted from a wavelength generating circuit. 3. Guidepost. The self-luminous line-of-sight gaze guide according to claim 2, wherein the wavelength generating circuit emits a signal that changes a current value of the light emitting element at the time of light emission in a sine wave shape. Further, a power supply device for causing the light emitting element to emit light, and a pulse circuit for controlling a blinking duty ratio of the light emitting element, wherein the apparent light emission luminance is changed by a change in the blinking duty ratio by a pulse emitted from the pulse circuit, The self-luminous gaze guidance mark according to claim 1, wherein a target interval is provided.

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