KR20050113143A

KR20050113143A - Trafic signal lamp using light emitting diode

Info

Publication number: KR20050113143A
Application number: KR1020050107289A
Authority: KR
Inventors: 오완호; 송은용; 이기몽
Original assignee: 오완호
Priority date: 2005-11-10
Filing date: 2005-11-10
Publication date: 2005-12-01
Also published as: CN100513863C; KR20060034676A; KR100798680B1; CN1963290A

Abstract

The present invention relates to a traffic light using a light emitting diode, and more particularly, to a lighting method of an equalization mechanism that displays signals of stopping, attention, rotation, and progress of the vehicle as red, yellow, green arrows, and green lights. The signal is obtained by using a light emitting diode that emits a color of.

According to the present invention, the traffic lights are arranged radially with one or a few rows of light emitting diodes on the circumferential surface of the signal face at regular intervals, and the lights are turned toward the center point of the traffic light to face the entire traffic light surface. Plane Emitting prevents glare caused by Dot Emitting of conventional LED signals and at the same time reduces the quantity of LEDs to minimize the power consumption and provide the convenience of signal lamp installation and operation. It is a traffic signal lamp that improves the light efficiency, as well as the lifespan and reliability by rapidly diffusing the heat generated when emitting light emitting diodes into the air by supplementing the disadvantages of the light emitting diodes, which are poor in light efficiency.

The traffic light surface 10 in which a traffic signal is displayed in color in a traffic light constructed using a light emitting diode is formed by inserting the light emitting diode 11 into a circular circumferential surface of transparent resin or glass and attaching the reflective plate 12 to the back side. The light emitted from the light emitting diode to the back side of the light is reflected to the front portion of the traffic light surface 10, the light guide plate 15, the diffusion plate 14 and the horizontal prism film 16 vertical prism It is a traffic light using a light emitting diode, characterized in that the film 17 is in close contact with each other so that the entire surface of the traffic light surface 10 can be evenly emitted.

Description

Traffic Signal Using Light Emitting Diodes {Trafic Signal Lamp Using Light Emitting Diode}

The present invention relates to a traffic light using a light emitting diode. More specifically, the light emitting diodes 11 in a row or a plurality of rows on the circumferential surface of the traffic light surface 10 are radially spaced at different angles from each other toward the center of the traffic light surface. It is inserted or in close contact with the power and emits light by applying power.

When the light emitting diode emits light from the circumferential surface of the traffic light, light is emitted to the front or the back of the traffic light surface. When the light emitted to the back is reflected by the reflector 12 attached to the back, the entire emitted light is transparent. Radiated through the front of the traffic light surface (10).

The light intensity emitted to the front surface of the traffic light surface 10 is homogenized by the light guide plate 14 and then diffused by the diffuser plate 15 and finally passed through the horizontal prism film 16 and the vertical prism film 17. Signal Face This is a traffic light that uses a light-emitting diode configured to plane-emit the front of the face.

Prior art in this field

Conventional traffic lights use a method of displaying a signal by emitting light with a light bulb, but the power consumption is large and the life time of the light bulb is short, which causes a problem of low economical efficiency, and also bright sunlight due to the Sun Phantom phenomenon caused by external light. Essence is significantly reduced.

Currently, traffic lights using light emitting diodes have been developed and used to supplement and improve these problems. However, the traffic lights using the light emitting diodes also need to be driven by using an array substrate in which a large number of light emitting diodes are arranged in a lattice shape and a radial or circular shape on the entire front part, and the contacts of each light emitting diode are exposed on the array substrate. Therefore, there is a risk of leakage or short circuit in rainy weather, and to prevent it, confidential waterproof treatment is essential.

The traffic light using the light emitting diode having such a waterproof and airtight structure has a problem in that the heat generated from the light emitting diode does not escape to the outside as well as the manufacturing cost, resulting in poor luminous efficiency due to temperature rise and deterioration in life. Each light emitting diode installed in the shape of lattice, radial or circular on the entire surface of traffic light directly radiates light to the driver and glare occurs. This dot emitting is evenly and evenly distributed LEDs all over the surface of traffic light. If you don't, you can't eat.

The present invention has been made to solve such a conventional problem, the traffic light using the light emitting diode according to the present invention is a light emitting diode 11 in a row or a row of light emitting diodes 11 on the circumferential surface of the traffic light surface 10 The light emitting diodes emit light at the side of the traffic light by inserting or contacting at regular intervals with different angles toward the center point. In this way, the emitted light is radiated to the front surface of the traffic light using a reflector to indirectly emit light, thereby reducing glare caused by dot emitting and minimizing energy consumption by reducing the number of light emitting diodes used. In order to solve the decrease in luminous efficiency caused by airtight waterproofing and temperature rise, which is pointed out as a problem of conventional light emitting diode traffic signals, it is to simplify the repair and maintenance.

When explaining the present invention by the accompanying drawings to achieve the above object is as follows.

1 is an exploded perspective view of a traffic light using a light emitting diode (Light Emitting Diode (hereinafter, referred to as LED)) according to an embodiment of the present invention radially circumferentially the circumferential surface of the traffic light surface 10 made of transparent resin or glass When the light is generated in the LED 11 by inserting the LED 11 by dividing the hole into the center of the traffic light surface 10 at the same diameter and depth as the LED 11 and inserting a voltage, the traffic light surface 10 As shown in FIGS. 4, 5 and 6, the light exiting to the back of the traffic light surface 10 has the grooves 28, 28a, and 28b at regular intervals and in various forms. It is produced so that it can be refracted by reflection. The refracted light is reflected back to the front part of the traffic light surface 10 by the reflector 12, and this light is also radiated to the front of the traffic light surface 10 as in the form of the back of the traffic light surface 10.

Here, the LEDs 11 arranged on the circumferential surface of the traffic light surface 10 may be arranged in one or a few rows at different angles toward the center point of the traffic light surface 10 as necessary.

The light emitted to the front surface of the traffic light surface 10 is uniformed by the light guide plate 14 and scattered back to the scattering plate 15 so that the signal can be distinguished from a wide view and finally the horizontal prism film 16 Pass through the vertical prism film 17 and finally the traffic light identified by the driver through the visor 20 is to see a homogeneous and stable surface emitting signal.

In front of the vertical prism film 17, a protective plate 18 made of transparent resin or glass is provided on the traffic light surface 10, the reflecting plate 12, the light guide plate 14, the diffusion plate 15, the horizontal prism film 16, and the vertical prism film. The structure of the traffic light according to the present invention, which is tightly stacked together with (17) and is put in the protective tube 19 and is fixed to the opening 21 with screws 24, reduces the quantity of LEDs 11, thereby reducing energy and surface emitting light. This reduces glare from point emission.

In addition, since the LED 11 is in surface contact with the traffic light surface 10, the heat generated when the LED 11 emits light is rapidly transmitted through the traffic light surface 10 and diffused to the outside, thereby reducing the brightness due to thermal runaway. It will also provide a traffic light to prevent.

The opening 21 is inserted into the housing 22 and the face gasket 37 for airtightness therebetween, and is fixed with bolts 33. Both slots 36 have slotting grooves 36 on the upper and lower sides of the housing 22. When the hinge bolt 35 is connected to the opening 21, when the bolt 33 is loosened, the opening 21 is operated by the hinge bolt 35 in the housing 22 as a hinged door.

Enclosure 22 has a wire hole having a different wire hole provided with bolt holes 27 and ring gaskets 25 for supplying electricity to one side or both sides of the housing 22 to be combined with traffic lights of different colors. On one side of the housing 22 is coupled to the connecting bolt 23 and the wire is first drawn in, the waterproof cap 39 and the gasket 40 is the housing 22 by the bolt hole 34 and the fixing bolt 38 It is fixed to and manufactured to be waterproof.

The rectifier 29 which supplies electricity to each LED 11 is attached to the rectifier bracket 41 and is connected to and separated from the printed circuit board 13 by a plug 30 and a socket 31. It is.

When a failure occurs in a traffic light manufactured as described above, the repair process will be described in detail as follows.

When the bolt 33 is loosened, the opening 21 is opened from the housing 22 by the hinge bolt 35 with the rotation axis. When the screw 24 is loosened and the plug 30 and the socket 31 are separated, only the protective tube 19 is contained. Since it is separated from the 22 and the opening 21, it is possible to provide a traffic light that can be repaired and mounted quickly.

Figure 2 is another embodiment of the traffic light has the same structure as in Figure 1 but the heat radiating fin rectifier 53 provided with a radiating fin for supplying electricity to the LED (11) to quickly outside the radiating enclosure 50 The heat dissipation fin rectifier 53 is screwed together with the gasket 52 to the heat dissipation enclosure 50, and the heat dissipation fin for dissipating heat protrudes to the outside of the heat dissipation enclosure 50. It is a traffic light in which the grill 51 is installed.

FIG. 3 illustrates a traffic signal using the direction indicator plate 80 and the variable lane plate 81 instead of the protection plate 18 as an example of the green arrow indicator and the variable lane lamp.

4, 5, and 6 will be described in detail with respect to the traffic light surface 10 as follows. A diamond groove 28 as shown in FIG. 4, a cylindrical groove 28a as shown in FIG. 5, and a rectangular groove 28b as shown in FIG. It is to provide a traffic light that provides a form of light.

7 is a circuit diagram for driving the traffic lights as described above in detail.

When voltage and current are input to the power supply unit 100, the voltage and current are transformed and rectified through the transformer 101 and the bridge 102 to be supplied to the power device unit 103, and the light emitting unit 107 is formed by the pulse width modulated voltage. A forward current flows through each LED of the light emitting unit to turn on. At this time, the current sensing unit 104 detects the intensity of the current flowing to the light emitting unit 107, and the calculating unit 106 calculates the intensity of the sensed current and outputs it to the current control unit 105.

The current controller 105 stably generates the luminous intensity of the light emitting unit 107 by stably supplying the intensity of the current supplied to the light emitting unit 107 by sending a control signal to the power device unit 103 according to the input current intensity. To make it possible.

In addition, the light emitting unit 107 composed of a plurality of LEDs has a network structure in which the LEDs are arranged in the same direction in all rows and columns, in the same row in series, and connected in parallel in the same column. A plurality of zener diodes are connected in series, and each zener diode is connected to the LEDs constituting a specific row of the light emitting unit 107 in parallel to be opposite in polarity to the light emitting unit 107. If breakdown of LED of specific column occurs, Zener breakdown occurs and current is transmitted to LED of next column.

The light emitting unit 107 configured as described above does not have any problem in the operation of the entire light emitting unit 107 even when a failure occurs in a specific LED.

The present invention is not limited to the above-described traffic lights, but various modifications (for example, billboards, etc.) are possible within the spirit of the appended claims.

Traffic light using the light emitting diode according to the present invention made as described above by placing the light emitting diode radially at regular intervals on the circumference of the traffic light surface to reduce the amount of use of the light emitting diode to reduce the production cost and power consumption As it generates economically many gains and the surface of the traffic light emits light, the glare from the traffic light using the conventional light emitting diode is remarkably reduced to solve the driver's fatigue, and thermal diffusion is performed quickly, thus improving light efficiency and lifespan. It is improved at the same time and has the effect of quick maintenance and repair in case of failure.

1 is an exploded perspective view of a traffic light using a light emitting diode according to the present invention.

Figure 2 is an exploded perspective view of a traffic signal of another embodiment using a light emitting diode according to the present invention.

Figure 3 is an exploded perspective view of a green arrow display using a light emitting diode and a traffic light for variable lane display according to the present invention.

Figure 4 is a detailed view of the traffic light surface according to the present invention.

5 is a detailed view of a traffic light surface of another embodiment according to the present invention;

Figure 6 is a detailed view of a traffic light surface of another embodiment according to the present invention.

7 is a traffic light LED driving circuit diagram according to the present invention.

10: Signal Face 11: Light Emitting Diode

12: Reflector Sheet 13: Printed Circuit Board

14: Light Guide Panel 15: Diffusion Sheet

16: Horizontal Prism Film

17: Vertical Prism Film

18: Protect Sheet

19: Protect Tube

Claims

In a traffic light using a light emitting diode,

Printed circuit board in the rectifier 29 for arranging the light emitting diodes 11 radially on the circumferential surface of the traffic light surface 10 made of transparent resin and connected to an external power supply to supply current to the light emitting diodes 11. When the current flows through the 13, each of the light emitting diodes 11 generates light, and the reflector 12 reflects the light refracted and reflected from the groove 25 on the rear surface of the traffic light surface 10 to the front of the traffic light surface 10. The light guide plate 14, the diffuser plate 15, the horizontal prism film 16, the vertical prism film 17, and the protective plate 18 made of a transparent resin are closely stacked on the front surface of the traffic light 10 in order to emit light. Traffic light using a light emitting diode, characterized in that made.
The light emitting diode according to claim 1, wherein the LEDs (11) arranged on the circumferential surface of the traffic light surface (10) are arranged on the n-column circumferential surface in one row with different angles toward the circular center of the traffic light surface (10). Traffic lights using.
Traffic light using a light emitting diode according to claim 1 or 2, characterized in that the traffic light surface (10) is made of transparent glass.
A traffic light using a light emitting diode according to claim 1, characterized in that the protective plate (18) is made of transparent glass.
According to claim 1, 2 and 3 according to the back of the traffic light surface 10 to form a constant grating groove 28, columnar groove 28a, a rectangular groove 28b, the light generated from the light emitting diode is refracted reflection in a constant form Traffic light using a light emitting diode, characterized in that.
5. A traffic light using a light emitting diode according to claim 1 or 4, characterized in that the protective plate (18) comprises a direction indicating plate (80).
4. A traffic light using a light emitting diode according to claim 1 or 3, characterized in that the protective plate (18) comprises a variable lane plate (81).
According to claim 1 and 2, the reflection plate 12, the traffic light surface 10, the light emitting diode 11, the printed circuit board 13, the light guide plate 14, the diffusion plate 16, the horizontal prism film 16, The vertical prism film 17 and the protective plate 18 are closely stacked on the protective tube 19, and the protective tube 19 is fixed to the opening 21 by screws 24. The printed circuit board 13 and the rectifier 29 are connected to each other. Traffic light using a light emitting diode, characterized in that connected to the plug 30 and the socket (31).
In a traffic light using a light emitting diode, a gasket 37 is disposed between the opening 21 and the housing 22 to be fixed with a bolt 33 to be waterproofed, and a slotting groove 36 is provided at the top and bottom of the housing 22. Traffic light using a light emitting diode, characterized in that fixed to the opening 21 and the hinge bolt (36).
As shown in FIG. 2, the heat dissipation fins of the heat dissipation rectifier 53 for supplying current to the light emitting diodes protrude out of the heat dissipation enclosure 50, and the grill 51 is installed on the heat dissipation enclosure 50. Traffic lights using light emitting diodes.
In the driving circuit for supplying current to the light emitting diodes, the power element unit 102, the current sensing unit 104, the calculating unit 106, and the current control unit 105 are configured and the current supplied to the light emitting unit 107 is stably supplied. Traffic light using a light emitting diode, characterized in that.
The zener diodes of the circuit regeneration unit 108 are connected in series, and each zener diode is paired with a light emitting diode constituting a specific row of the light emitting unit 107 to be connected in parallel in opposite polarity to the light emitting diode of a specific column of the light emitting unit 107. When a failure occurs, a zener breakdown occurs and a current signal is transmitted to the light emitting diodes of the next row.