JP2007303179A - Spontaneously light emitting alarm lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spontaneously light emitting alarm lamp capable of increasing reliability in emitting light at night. <P>SOLUTION: This spontaneously light emitting alarm lamp is constituted in such a way that an inclination sensing part 13 for sensing change of inclination of an inclination sensor 41 is provided in a control part 1 and the inclination sensing part 13 determines that the inclination sensor 41 may cause failure if the inclination sensing part 13 does not sense change of inclination of the inclination sensor 41 for the time exceeding a threshold value to start light emitting of a light emitting part 2 so that a condition in which the light emitting part 2 does not emit light irrespective of the situation in which the light emitting part 2 must emit light when the inclination sensor 41 causes failure is avoided and reliability in emitting light at night can be increased. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a self-luminous warning light that is attached to a barrier bar such as a toll gate or a railroad crossing in a parking lot, and prevents the accident by causing the vehicle driver or the like to emit light at night to emit a barrier bar. .

  For example, a self-luminous warning light that urges a vehicle driver or the like to emit a light blocking bar at night to prevent accidents. For example, a light source, a plurality of optical fibers that guide light from the light source, and an optical fiber. A light reflector that bends the reflected light and reflects it to the outside, a storage battery that supplies electricity to the light source, and a solar battery that supplies electricity to the storage battery. A light reflector that is arranged to emit light along the length of the warning light, reflects light from the head of the light emitting diode to the outside via an optical fiber, and directly reflects light from the tail of the light emitting diode. A light reflector is provided, a blinking circuit that blinks the light source, a lightness detection circuit that detects the external brightness, and a light source when the barrier is in the closed state by detecting the inclination angle of the barrier. Warning light and a tilt sensor to have been disclosed (for example, Patent Document 1).

JP 09-195232 A

  However, in the conventional self-luminous warning lamp as described in Patent Document 1, for the light emission of the light emitting unit, a blinking circuit that blinks the light source, a brightness detection circuit that detects external brightness, and an inclination that activates the light source For example, if the tilt sensor breaks down, or if the vehicle headlight is incident on the brightness detection circuit and it is erroneously detected as daytime, the light emission may stop. The reliability as a self-luminous warning lamp that emits light at night is insufficient.

  The present invention has been made in view of the problems as described above, and is intended to provide a self-luminous warning lamp with improved reliability for emitting light at night.

  In order to achieve the above object, the present invention is configured as follows. That is, a self-luminous warning lamp according to the present invention includes a light emitting unit that emits light from a light source, a control unit that controls light emission, a power supply device that supplies power to the light source, and an inclination sensor that detects inclination. A self-luminous warning light that causes the light-emitting part to emit light by the control unit in a state where the inclination sensor detects an angle within a predetermined range, wherein the control unit senses a change in the inclination of the tilt sensor. A sensing unit is provided, and the light emission of the light emitting unit is started when the tilt sensing unit does not sense a change in the tilt of the tilt sensor for a time equal to or greater than a threshold value.

  According to the self-luminous warning lamp according to the present invention, the control unit is provided with a tilt sensing unit that senses a tilt change of the tilt sensor, and the tilt sensing unit senses a tilt change of the tilt sensor in a time longer than a threshold value. If the inclination sensor fails, it is determined that there is a possibility that the inclination sensor has failed, and the emission of the light emitting unit is started. The reliability of emitting light can be improved.

  Here, the time equal to or greater than the threshold value indicates the maximum time within the time interval at which the tilt sensor can tilt in a situation where a self-luminous warning lamp is used. If the time interval of the most passing train is opened with reference to the railroad diagram, the threshold is set as the threshold value. It is determined that a failure or the like has occurred in the sensor, and light emission is started by the control unit.

  In addition, the control unit is provided with a reset unit, if the trigger unit provided separately from the control unit is made to return to the initial state every predetermined time, control in the control unit is not normal, Even when the control itself stops, it is preferable that it is reset to the initial state by the trigger means, and it is possible to prevent the abnormal state or the stopped state from continuing for a certain period of time.

  The control unit further includes a memory circuit in which data is not erased even when power is not supplied, and the control unit reads the data of the memory circuit so that the control unit If the light emitting method of the light emitting unit can be changed, the data in the memory circuit will survive even if the power is stopped due to a standstill or a power failure, and the efficient light emitting method can be maintained by reading it from time to time. This is preferable.

  According to the self-luminous warning lamp according to the present invention, the control unit is provided with a tilt sensing unit that senses a tilt change of the tilt sensor, and the tilt sensing unit senses a tilt change of the tilt sensor in a time longer than a threshold value. If the inclination sensor fails, it is determined that there is a possibility that the inclination sensor has failed, and the emission of the light emitting unit is started. The reliability of emitting light can be improved.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 shows the appearance of an embodiment of a self-luminous warning lamp according to the present invention, where (a) is a front view and (b) is a bottom view. First, in (a), a self-luminous warning lamp 10 is constructed such that a light source 3 is provided in a light-transmitting window H1 provided in a part of a light-shielding horizontally long main body H to form a light-emitting unit 2, and at night. In FIG. 5, light is emitted from the light emitting unit 2 and the presence of the blocking bar is urged. The translucent window H1 is formed by a transparent cover, and four light sources 3 which are light emitting diodes are aligned in a horizontal line in the window H1, and light from the light source 3 directly from the window H1. As a result, the light emitting unit 2 is made horizontally long. Further, solar cells 6 are arranged between the light sources 3 in the window portion H1 so that electric power is generated by sunlight incident from the window portion H1, and the generated electric power is stored in the main body H. The electricity is stored in the electricity storage means 7 which is a lead storage battery.

  Here, in order to ensure safety, the light-emitting unit 2 needs to have a visibility of 100 m or more so that any vehicle can be stopped with a margin even under the illuminating lamp, and is caused by the solar cell 6. Since it is necessary to emit light having a light emission luminance sufficient to ensure the visibility by using an electric power, a high-intensity light emitting diode having a small shell and a viewing angle is used, and a window for emitting light from the light source 3 without waste. The light from the light source 3 is directly emitted from the portion H1, and the light source 3 is configured so that red light, which is a warning color, blinks using a red light emitting diode. Moreover, the light emission part 2 arrange | positions the several light source 3 in a straight line, and makes it long horizontally, and combined with being the rod-shaped body by which the interruption | blocking bar was extended, the visibility at the time of attaching to the interruption | blocking bar improved. It is made to be able to.

  Further, since the solar cells 6 are arranged between the light sources 3, the space in the window portion H <b> 1 can be effectively utilized while arranging the light sources 3 at intervals, and sunlight is supplied to the solar cells 6. There is no need to provide a separate window portion H1 for introduction, and it can be carried out in a simple process for providing a solar cell.

  Next, in (b), it is a bottom view of the self-luminous warning lamp 10. A part of the window H1 is extended to the lower surface of the main body H to form a sensor window H2, and a brightness sensor 42, which is a photosensor, is provided in the sensor window H2, and light from the outside world is transmitted to the sensor window. The brightness sensor 42 can sense the brightness of the surroundings by passing through the portion H2. On the back side of the main body H, a mounting plate portion T that forms a mounting portion along the length direction of the main body H is provided so as to project. A band mounting hole T1 for band insertion is provided in the mounting plate portion T. Are drilled in the vicinity of both ends of the mounting plate portion T, respectively.

  The main body H and the window portion H1 are each formed of polycarbonate resin having excellent impact resistance, and the main body H and the mounting plate portion T are integrally formed by injection molding. The main body H and the mounting plate portion T are mixed with a white pigment to be light-shielding, but the window portion H1 is colorless and transparent, and is fitted in a notch portion having the same shape as the window portion H1 of the main body H. It is attached and integrally fixed by ultrasonic welding or the like. Since the window portion H1 and the sensor window portion H2 are integrated, it is not necessary to separately provide the sensor window portion H2, and the process relating to the formation is simplified.

  FIG. 2 is a block diagram for explaining a series of operations of the self-luminous warning lamp 10. The light emitting unit 2 formed by the light source 3 is controlled in light emission method by the control unit 1, and the control unit 1 is supplied with power from the power storage means 7 that stores the power generated by the solar cells 6. The inclination sensor 41 and the brightness sensor 42 are connected.

  When the inclination sensor 41 senses a certain range of inclination and the brightness sensor 42 senses the surrounding brightness as below a certain level, the control unit 1 needs to emit light from the light emitting unit 2 because the surroundings are dark. A signal indicating the emission is transmitted from the signal transmission unit 11 to the blinking adjustment circuit 12 from the light source 3, that is, the light emitting unit 2. Starts to emit light.

  Here, in the control unit 1, the tilt sensor unit 13 including the timer unit 14 is connected to the tilt sensor 41, and the timer circuit 14 is reset when the tilt sensor unit 13 detects the tilt within the certain range. Has been made. However, when a failure occurs in the tilt sensor 41, the tilt sensor 41 cannot detect when the presence of a blocking bar is required, and the light emitting unit 2 may not emit light due to the failure. There is. Therefore, when the reset of the timer circuit 14 is not performed for a certain time or more, a signal when an abnormality is detected is sent from the timer circuit 14 to the signal transmission unit 11, and the signal is continuously transmitted after the signal is sent. By blinking, it is possible to cope with a failure of the tilt sensor 41, which is generally a problem of ensuring reliability.

  The timer circuit 14 is provided with a clock function. For example, when the train does not pass from the last train to the first train and it is not necessary to emit light, a signal related to the stop of light emission when the time after the last train is reached. When the time before the first power is reached, it is preferable to transmit a signal related to the start of light emission to the signal transmission unit 11 because the load on the power storage means 7 can be reduced.

  Here, the inclination of the tilt sensor 41 in a certain range means that the blocking bar is generally vertical when it is not necessary to block the vehicle, and is generally horizontal when the vehicle needs to be blocked. Needless to say, it is particularly important when the vehicle needs to be shut off, and when the self-luminous warning lamp 10 is mounted so that the length direction is along the extending direction of the shut-off bar. The length of the self-luminous warning lamp 10 gradually becomes closer to the horizontal from the vertical and is tilted in the vicinity of the front, which becomes horizontal, as a threshold value, and indicates the inclination when the light is further inclined in the horizontal direction. Such a threshold may be set so that the blocking bar is inclined substantially the same as the horizontal, but if the blocking bar is inclined at about 30 ° to 60 ° with respect to the horizontal, the blocking bar is set as the threshold. The self-luminous warning lamp 10 can be made to emit light from the state where the bar is about to fall, and it is possible to alert the presence of the blocking bar as well as the presence of the blocking bar. If the blocking bar is less than 30 ° with respect to the horizontal, the blocking bar is almost lowered, and if it exceeds 60 °, a malfunction may occur when the blocking bar is pushed by wind pressure or the like. The tilt sensor 41 may be an appropriate sensor such as a small magnet moving type, a Hall IC type, or a servo type as long as it can detect the tilt along at least the direction in which the blocking bar is raised and lowered.

  In the control unit 1, the signal transmission unit 11 is further provided with a memory circuit 16 via a signal correction circuit 17, and data relating to the light emission method stored in the memory circuit 16 is read out, and the signal correction circuit 17. As a result, the signal transmitter 11 converts the signal into a readable signal, and the light emitting unit 2 emits light. The data stored in the memory circuit 16 may be one-way communication from the memory circuit 16 to the signal transmission unit 11, but performs bidirectional communication with the signal transmission unit 11, from the brightness sensor 41 and the inclination sensor 42. The signal transmission unit 11 that has received the above information selects and reads out the optimum light emitting method from the memory circuit 16 based on the information, so that, for example, the light emitting time becomes longer in the winter when the dark time is long. Therefore, the memory circuit 16 stores data relating to the light emission method such that the light emission luminance and duty ratio of the light source 3 are relatively reduced, and the light emission luminance of the light source 3 is increased so that the visibility is improved in the twilight time zone. In addition, the signal transmission unit 11 can read out data related to the light emission methods according to the situation detected by the brightness sensor 41 and the inclination sensor 42. As a result, the light emission by the light emitting unit 2 is efficiently performed, so that the capacity of the solar battery cell 6 and the power storage means 7 for supplying electric power can be minimized, and the presence of the blocking bar is surely triggered. Can be made to do.

  The memory means 16 can use either ROM or RAM. For example, by using an EEPROM which is an electrically rewritable ROM, data is read from the signal transmission unit 11 during bidirectional communication. It is preferable because further optimization of the light emitting method such as correction to the optimum light emitting method at the installation site can be achieved. Further, if the memory circuit 16 is one that does not erase data even if it is not energized, it does not require power when light emission of the light emitting unit 2 is necessary, that is, when data reading is not necessary, thereby saving power. Can be preferable. An EEPROM in which data is not erased without such energization can be suitably used.

  Further, the control unit 1 is provided with a reset unit 15, and the reset unit 15 includes a trigger unit 5 that generates a signal that causes the reset unit 15 to perform reset at regular intervals, separately from the control unit 1. Is provided. The control unit 1 is usually formed by using a microcomputer. However, if the microcomputer is provided with various functions, the control unit 1 becomes in a so-called runaway state in which the control is not normal, or the control unit 1 is in a stopped state. Although the control unit 1 is reset to the initial state by the trigger means 5 at regular intervals, the runaway state or the stop state of the control unit 1 can be prevented from continuing for more than the predetermined time. Can do. The power for operating the trigger unit 5 is preferably supplied by a battery or the like provided separately from the power storage unit 7, which further increases the independence from the control unit 1.

  An appropriate time may be set for a certain period of time that the trigger means 5 generates a signal for resetting. However, if the frequency is too high, the power consumption related to restarting and the like increases, and the frequency is too low. Since the abnormal state continues for a long time, which leads to overdischarge of the power storage means 7 and the like, it is preferable to set it to about half a day to about one day. Moreover, if the state of being abnormal is continued for about half a day to one day, it becomes possible for the patrol person to detect the abnormality and take a countermeasure.

  Furthermore, although not shown, a voltage monitoring IC is provided between the control unit 1 and the power storage unit 7, and the voltage of the power supplied from the power storage unit 7 to the control unit 1 is equal to or lower than the threshold value. In such a case, the supply of power from the power storage means 7 may be stopped by sensing that there is a risk of overdischarge. The power storage means 7 can be protected by preventing such overdischarge. Further, when writing to the memory means 16 as described above is performed when power supply is stopped, there is a risk of erasing data. If the gain control voltage is measured at any time by an AD converter or the like provided in the control unit 1 and the writing to the memory means 16 is stopped before the voltage equal to or lower than the threshold value, there is no risk of erasing data. This is preferable.

  Furthermore, although not shown, a voltage monitoring IC and a load resistor for electric power supplied from the solar battery cell 6 to the power storage means 7 are provided between the solar battery cell 6 and the power storage means 7 so that the voltage exceeds the specified voltage. If the power from the solar battery cell 6 is consumed by the load resistance until the voltage reaches a predetermined value when the voltage is sensed, the power storage means 7 is not overcharged. Can be prevented.

It is explanatory drawing which shows the external appearance in one Embodiment of the self-light-emitting warning lamp concerning this invention. It is a block diagram which shows a series of operation | movement of the self-light-emitting warning lamp concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 13 Inclination sensing part 14 Timer means 15 Reset means 16 Memory circuit 2 Light emission part 3 Light source 41 Brightness sensor 42 Inclination sensor 5 Trigger means 6 Solar cell 7 Power storage means 10 Self-light-emitting warning lamp H Main body

Claims (3)

A light emitting unit that emits light from a light source, a control unit that controls light emission, a power supply device that supplies power to the light source, and a tilt sensor that detects tilt, the tilt sensor having an angle within a predetermined range. A self-luminous warning lamp that causes the light emitting unit to emit light by the control unit in a state of being detected, and the control unit is provided with a tilt sensing unit that senses a change in the tilt of the tilt sensor. A self-luminous warning lamp characterized by starting light emission of the light emitting unit when no change in inclination of the inclination sensor is detected in a time longer than a threshold value. 2. The self-light-emitting device according to claim 1, wherein the control unit is provided with a reset unit, and is reset to an initial state every predetermined time by a trigger unit provided separately from the control unit. Warning light. The control unit is further provided with a memory circuit in which data is not erased even when power is not supplied, and the control unit reads the data of the memory circuit so that the control unit emits the light emission based on the data. The self-luminous warning light according to claim 1 or 2, wherein the light emitting method of the part can be changed.

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