JP3207117U - LED traffic light - Google Patents

Abstract

To provide an LED traffic light that can melt ice and snow of a traffic light at night with a simple configuration and can effectively use power consumption. An LED traffic light in which a heater 40 for aquatic animals for heating each lamp 3a, 3b is fixed to the opposite side of each lamp 3a, 3b on the back surface of the lamp box 2 by a fixing means. Heat generating means fed from the LED traffic light side and sealed in the first glass tube, temperature detecting means for detecting the temperature of the heat generating means at the tip of the second glass tube, and a second covered with metal foil A temperature control means for controlling the temperature of the heat generation means based on a detection signal from the temperature detection means at the body of the glass tube, and a base portion for holding the first glass tube and the second glass tube in parallel with each other And a freely openable / closable casing that covers the first glass tube and the second glass tube from the base portion to the tip portion, and the fixing means is the suction cup 80. [Selection] Figure 2

Description

  The present invention relates to an LED traffic light with snowfall countermeasures.

In recent years, with the progress of semiconductor technology, LEDs (Light Emitting Diodes), which consume less power than light bulbs, have been frequently used instead of light bulbs.
For this reason, LEDs have come to be used for traffic lights.

By the way, since the LED consumes less power per unit light beam than a light bulb, when it snows on a traffic light, as shown in FIG. It becomes difficult.
FIG. 10 is an external view when snowfall occurs on the traffic light 1.

  Patent Document 1 is an example in which such a problem is solved.

No. 2005-11217

  The invention described in Patent Document 1 relates to a traffic light having an ice / snow melting function, and specifically, a heating element formed in a sheet shape is attached to the back surface of the traffic signal body (lamp box), It consists of a semiconductor heat exchange element formed in the form of a sheet. A solar cell connected to the heating element is attached to the support column. The electric charge generated in the solar cell is accumulated in the electric double layer capacitor, and the electric charge of the electric double layer capacitor is sequentially sent to the semiconductor heat exchange element. As a result, the heating element generates heat, and ice and snow do not adhere to the light emitting part on the front side of the traffic signal body.

However, although the invention described in Patent Document 1 described above generates power with a solar cell during the daytime, it cannot generate power at night. When there is snowing day and night, the electric power generated by solar cells is used for melting ice and snow during the day, and there is almost no room for accumulation in the electric double layer capacitor, so the solar cells cannot generate electricity at night. May remain covered with ice and snow.
In the invention described in Patent Document 1 described above, a sheet-like heating element is attached to the back surface of the traffic signal body (lamp box). However, the back surface of the three-color traffic signal body (lamp box) is almost uneven. Therefore, there is a possibility that gaps are generated everywhere when a sheet-like heating element is affixed, and that the heating element is disconnected when it is forcibly adhered. Moreover, since the area | region between a lamp device is also heated, electric power is heated uselessly.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an LED traffic light that can melt ice and snow of a traffic light even at night and can effectively use power consumption with a simple configuration.

  In order to achieve such an object, an LED traffic light according to the present invention is an LED traffic light in which a heater for aquatic animals that heat each lamp is fixed on a side opposite to each lamp on the back of a lamp box by a fixing means. The heater is supplied with heat from the LED traffic light side and sealed in the first glass tube, temperature detecting means for detecting the temperature of the heat generating means at the tip of the second glass tube, and metal foil Temperature control means for controlling the temperature of the heat generating means based on a detection signal from the temperature detection means at the body portion of the second glass tube covered with, the first glass tube and the second glass A base that holds the tube so as to be parallel, and a plurality of openings, and an openable and closable housing that covers the first glass tube and the second glass tube from the base to the tip. And the fixing means is Characterized in that it is a sucker.

  According to the present invention, it is possible to provide an LED traffic light that can melt ice and snow of a traffic light even at night with a simple configuration and can effectively use power consumption.

2 is an example of an LED traffic light 1; It is the elements on larger scale of the rear view of the lamp case 2 of the LED signal apparatus 1 shown in FIG. It is an enlarged view of the heater 40 shown in FIG. (A) is a rear view of FIG. 3, (b) is a front view of the suction cup 80 shown in (a), and (c) is a side view of the suction cup 80 shown in (b). . It is a figure which shows the state which expanded the housing | casing 41 of the heater shown in FIG. FIG. 6 is a diagram showing a state in which the heat generating means 51, the temperature control means 52, and the base 53 are removed from the state shown in FIG. FIG. 6 is a diagram showing a state where a housing 41 is removed from the state shown in FIG. 5. FIG. 8 is an internal structure diagram of the heat generating means 51 and the temperature control means 52 shown in FIG. 7. It is an example of the circuit diagram of the heat generating means 51 and the temperature control means 52 shown in FIG. FIG. 6 is an external view when snowfall occurs on the traffic light 1.

<Signal appearance>
FIG. 1 is an example of an LED traffic light 1. In the LED traffic light 1, a lamp box 2 of the traffic signal body is fixed to an arm 4 that protrudes horizontally from the upper end of a vertically arranged support column 5. The lamp box 2 is a horizontally long casing made of metal (for example, iron or alloy), and lamps 3a, 3b, and 3c that emit red, yellow, and blue light are arranged.
The lamps 3a, 3b, 3c are configured to emit red, yellow, and blue, that is, red, yellow, blink, and blue by an aggregate of a large number of LEDs. The lamps 3a, 3b, 3c are not directly exposed to the LEDs, but are covered and protected by a disc-shaped transparent acrylic plate.

<Backside of traffic light box>
FIG. 2 is a partially enlarged view of the rear view of the lamp box 2 of the LED traffic light 1 shown in FIG.
A commercially available heater 40 for aquatic animals that heat the lamps 3a, 3b, 3c is fixed to a side opposite to the lamps 3 of the lamp box 2 with a suction cup 80 as a fixing means. In order to improve the fall prevention property of the heater 40, an adhesive may be applied between the suction cup 80 and the lamp box 3 and then cured.
The power cable 54 of each heater 40 is fixed by, for example, a binding band 71 and is connected to a power source in the switchboard via the column 5 of the LED traffic light 1.

<Heater case>
FIG. 3 is an enlarged view of the heater 40 shown in FIG.

  A plurality of openings 42 are formed in the housing 41 shown in FIG. The concave-shaped protrusion 43 and the convex-shaped protrusion 44 of the housing 41 are fitted. When the fitting between the projection 43 and the projection 44 is removed with a fingernail, the housing 41 can be opened and closed like a bivalve as shown in FIG.

4 (a) is a rear view of FIG. 3, FIG. 4 (b) is a front view of the suction cup 80 shown in FIG. 4 (a), and FIG. 4 (c) is FIG. 4 (b). 2 is a side view of the suction cup 80 shown in FIG.
A pair of suction cups 80 are fixed to the side surface of the casing 41 shown in FIG. The suction cup 80 has a suction cup body 81 and a holding portion 82, and the holding portion 82 is inserted into the hole 45 (see FIG. 6) of the housing 41.

FIG. 5 is a view showing a state where the casing 41 of the heater shown in FIG. 3 is expanded.
In the case 41 shown in FIG. 5, the heat generating means 51 and the temperature control means 52 are built in parallel and integrated with the base 53. A groove 53a is formed in the base 53 so that it can be fitted to the wall of the housing 41.

<Heater heating means, etc.>
6 is a view showing a state in which the heat generating means 51, the temperature control means 52, and the base 53 are removed from the state shown in FIG.
The groove 53a of the base 53 is fitted into the right wall of the casing 41. The opening 42 is shown in an oval shape in the figure, but is not limited thereto. The number of openings 42 is 28, but the present invention is not limited to this.

FIG. 7 is a view showing a state in which the housing 41 is removed from the state shown in FIG. FIG. 8 is an internal structural diagram of the heat generating means 51 and the temperature control means 52 shown in FIG.
The heat generating means 51 includes a long mica (also called mica) 57, a heating wire (nichrome wire) 58 wound around the mica 57, and silicone rubber sealed in a first glass tube 56. It is.
The temperature control means 52 has a length in the longitudinal direction shorter than that of the heat generating means 51, and the base 53 is covered with a metal foil (for example, aluminum foil) 55 for shielding radiant heat from the heat generating means 51. The reason why the tip of the temperature control means 52 is exposed from the metal foil 55 in the glass tube 56 is that a temperature detecting element is built in the tip. The first glass tube 56 and the second glass tube 59 are fixed to be horizontal. Both the glass tubes 56 and 59 are made of quartz.

  The temperature control means 52 is an electronic circuit board 60 and powdered silicone sealed in a second glass tube 59.

<Heater circuit diagram>
FIG. 9 is an example of a circuit diagram of the heating means 51 and the temperature control means 52 shown in FIG. 7, but the present invention is not limited to this.
A heating wire H (58) as the heat generating means 51 and an electronic circuit board 60 as the temperature control means 52 in the body of the second glass tube are shown.
Electronic circuit board 60 includes varistor VR, temperature fuse F, NTC (negative temperature coefficient) thermistor Rt1 as a detecting means for detecting the temperature of heating means 51, and detecting means for detecting the temperature of heating means 51 and generating a detection signal PTC (positive temperature coefficient) thermistor Rt2, capacitors C1, C2, resistors R1, R2, semi-fixed resistor R3, diode D1, trigger diode D2, and bidirectional thyristor D3.

Between one input end 60a and the other input end 60b of the electronic circuit board 60, a varistor VR which is a semiconductor element for protecting a circuit from a transient abnormal high voltage due to a lightning strike is provided.
One end of temperature fuse F is connected to one input end 60a, and one end of capacitor C1 as a bypass capacitor and one output end 60c are connected between the other input end 60b and the other end of temperature fuse F. ing. A thermistor Rt1, a voltage dividing resistor R1, and a phase control capacitor C2 are connected in series to both ends of the capacitor C1.
The cathode of the phase control diode D1 is connected to the connection point between one end of the capacitor C2 and the resistor R1, and the anode of the diode D1 is connected to the other end of the capacitor C2. One terminal of the trigger diode D2 is connected to the cathode of the diode D1, and one terminal of the bidirectional thyristor D3 is connected to the anode of the diode D1. The gate of the bidirectional thyristor D3 is connected to the other terminal of the trigger diode D2 and one end of the semi-fixed resistor R3. One end of the thermistor Rt2 is connected to the other end of the semi-fixed resistor R3, one end of the resistor R2 is connected to the other end of the thermistor Rt2, and the other end of the resistor R2 is connected to the other terminal of the bidirectional diode D3. It is connected to the other output end 60d. A heating wire 58 is connected to both output ends 60c and 60d.

  When the plug connected to the power cable 54 is connected to an outlet of a commercial power supply (for example, 50 Hz, 100 volts), the electronic circuit board 60 has an input end 60a, a temperature fuse F, an output end 60c, a heating wire 58, and an output end 60d. , Flows to the bidirectional diode D3 and the input end 60b, the heating wire 58 generates heat, and the temperature due to the heat generation is sensed by the thermistors Rt1 and Rt2.

  When the temperature sensed by the thermistors Rt1 and Rt2 increases, the resistance value of the thermistor Rt1 decreases, thereby reducing the current to the heating wire 58 and increasing the resistance value of the thermistor Rt2 from the trigger diode D2. The phase of the bidirectional diode D3 is controlled to reduce the output voltage of the bidirectional diode D3. This reduces the amount of heat generated by the heating wire.

  When the temperature sensed by the thermistors Rt1 and Rt2 is lowered, the resistance value of the thermistor Rt1 is increased, so that the current to the heating wire 58 is increased and the resistance value of the thermistor Rt2 is decreased, thereby causing the trigger diode D2 to The phase of the bidirectional diode D3 is controlled to increase the output voltage of the bidirectional diode D3. This increases the amount of heat generated by the heating wire.

  The semi-fixed resistor R3 and the resistor R2 are resistors for initial setting. That is, at the time of shipment from the factory, the adjustment is made for a snowy area and a snowy area.

In general, for traffic lights using LED traffic lights or light bulbs, it is generally controlled by a signal controller, a commercial power source, a generator, a battery, and a switcher, which are controlled in a wired or wireless manner at a traffic control center. It is built in the control panel placed in the vicinity of the traffic light or in the vicinity.
The power source of the heater 40 is supplied from the switchboard and is controlled to be turned on / off in winter. That is, the power supply to the power cable 54 is performed according to the temperature, rainfall, and snowfall.
In addition, the power supply of the heater 40 is provided with a commercially available temperature controller (0 ° C to 50 ° C) on the switchboard, and when the outside air temperature falls to a temperature that snows or freezes, it is detected by the sensor attached to the temperature controller, and the LED traffic light You may make it set so that it may become the temperature (for example, +5 degreeC-+8 degreeC) of the grade which melt | dissolves the attached snow and ice.

<Action>
When heat from the heater 40 is radiated to the light box 2 of the LED traffic light during freezing or snowing, the light box 2 is heated. Inside the lamp box 2, the radiant heat of the lamp box 2 is conducted to the lamps 3a, 3b, 3c side, and the heat from the heater 40 is conducted to the back, side, and surface of the lamp box 2 to the lamp units 3a, 3b, 3c side. Conduct. These heats melt snow and ice attached to the surface of the lamp box 2, particularly the lamps 3 a, 3 b, 3 c, even at night.
As described above, the LED traffic light has a simple configuration and is melted by the heat of the heater even if snow or icing occurs at night in the traffic lights 3a, 3b, 3c. Since the heat of the heater is radiated from the back surface of each lamp 3a, 3b, 3c of the lamp box 2, snow and ice adhering to each lamp 3a, 3b, 3c can be efficiently melted.

<Others>
In addition, although the said embodiment is a suitable specific example in this invention, and there may be a technically preferable various limitation, the technical scope of this invention does not have description which limits this invention in particular. As long as it is not limited to these embodiments. Moreover, the component in the said embodiment can be replaced with the existing component etc. suitably, and various variations including the combination with another existing component are possible.
For example, in the above-described embodiment, the case where the lamp box of the traffic light is a horizontal type has been described, but the lamp box may be a vertical type.
Therefore, the description of the above-described embodiment does not limit the content of the device described in the scope of the utility model registration request.

DESCRIPTION OF SYMBOLS 1 LED traffic light 2 Light box 3a, 3b, 3c Lamp 4 Arm 5 Strut 40 Heater 41 Case 51 Heating means 52 Temperature control means 53 Base 54 Power cable 71 Binding band 80 Suction cup

Claims (2)

An LED traffic light in which a heater for aquatic animals that heat each lamp is fixed to the opposite side of each lamp on the back of the lamp box by a fixing means,
The heater is
Heat generation means fed from the LED traffic light side and sealed in the first glass tube;
Temperature detecting means for detecting the temperature of the heat generating means at the tip in the second glass tube;
Temperature control means for controlling the temperature of the heating means based on a detection signal from the temperature detection means at the body of the second glass tube covered with metal foil;
A base that holds the first glass tube and the second glass tube in parallel;
A plurality of openings are formed, and has an openable and closable casing that covers the first glass tube and the second glass tube from the base to the tip.
The LED traffic light characterized in that the fixing means is a suction cup.   2. The LED traffic light according to claim 1, wherein an adhesive is applied between the suction cup and the lamp box.

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