KR101099042B1 - LED street light lamp - Google Patents

Abstract

One embodiment of the invention the case of the street light head including an upper opening, a lower opening and a front opening; A body part having a plurality of first LEDs and first illuminance sensors corresponding to the lower openings, and having an arm coupling part having a hollow columnar shape on one side of a rear surface thereof and mounted in the case; A front body part having a plurality of second LEDs and a second illuminance sensor corresponding to the front opening of the case and mounted on an upper plate of the body part; A power supply unit electrically connected to the first LED and the second LED at a pillar or outside of a street light and supplying power in a pulse width modulation (PWM) manner; A controller electrically connected to the power supply unit, the first illumination sensor and the second illumination sensor; And an LED street light and an optical bacterium control method including an arm unit coupled to an arm coupling unit of the body unit.

LED Street Light, Light Bacteria, Ambient Light Sensor

Description

LED street light {LED street light lamp}

The present invention relates to an LED street light using an LED (LED), and more particularly to an LED street light and a light sterilization control method for improving the light balance system in the direction of the center line of the driveway for improved driver safety and improved heat dissipation structure.

Conventional street lamps installed on roads are regularly arranged at intervals of approximately 30 m to 50 m along the road, and it is common to use sodium lamps or ordinary metals as lighting lamps. However, such a conventional lighting lamp such as sodium or metal is a discharge type because the electric power is consumed a lot of power consumption was developed a street light using the LED as a light source.

Thus, the conventional street lamp which uses LED as a light source mostly uses the 1W-capacity LED chip as a light source, and many of these were assembled and packaged. However, such a conventional LED lamp has a problem that the brightness (Lux) is not high so that the road does not brighten the road as much as ordinary sodium or metal.

 1 shows a conventional street light 10 using an LED chip as a light source. In view of the conventional streetlight 10 using the LED chip is usually installed at intervals of 30m to 50m, so-called lighting is not illuminated between the street lights 10, or there is a very dark so-called blind spot due to low illumination. do.

That is, the front part 21 of the pole in which the street lamp 10 is installed is the brightest, and the illuminance gradually decreases toward the peripheral region 22, and the light hardly reaches the dark as the distance from the street lamp 10 increases. It shows the state.

As such, the illuminance level of the road surface is different according to the position of one street light 10 based on the position, and the brightness of the road surface of the entire road is not constant. ) Shows the darkest trend in the lane.

As a result, the driver's vision is disturbed, which causes the driver to not accurately recognize the object on the road, causing traffic accidents.

An object of the present invention is to provide an LED street light to improve the uniformity in the direction of the center line of the driveway and improved heat dissipation structure.

Another object of the present invention is to provide a method for controlling the optical bacterium of the LED street light to improve the uniformity of the roadway.

One embodiment of the present invention for achieving the above object is a case of a street lamp head including an upper opening, a lower opening and a front opening; A body part having a plurality of first LEDs and first illuminance sensors corresponding to the lower openings, and having an arm coupling part having a hollow columnar shape on one side of a rear surface thereof and mounted in the case; A front body part having a plurality of second LEDs and a second illuminance sensor corresponding to the front opening of the case and mounted on an upper plate of the body part; A power supply unit electrically connected to the first LED and the second LED at a pillar or outside of a street light and supplying power in a pulse width modulation (PWM) manner; A controller electrically connected to the power supply unit, the first illumination sensor and the second illumination sensor; And an arm part coupled to the arm coupling part of the body part.

In one embodiment of the present invention, the body portion is provided with a plurality of first LEDs on the front surface composed of a plurality of curved surfaces, and a plurality of first heat sinks are provided on the rear surface together with the arm coupling portion.

In an embodiment of the present invention, the front opening of the case includes a front floodlight plate as an opening in a center line direction, the lower opening of the case has a lower floodlight plate in a roadway direction, and the upper opening of the case is the body portion. The first heat sink and the arm coupling portion provided on the rear surface is characterized in that it is formed to expose.

In an embodiment of the present invention, the front body portion has a rounded curved shape, and includes the plurality of second LEDs on the upper surface and the plurality of second heat sinks on the lower surface.

In one embodiment of the invention the upper surface of the front body portion is characterized in that provided correspondingly in the direction of the center line of the roadway.

In one embodiment of the present invention the case is a cross-sectional shape of a rhombus, the front opening is characterized in that each provided on two sides in the front direction of the case.

In one embodiment of the present invention, the case has a circular cross-sectional shape, characterized in that the front opening is formed along the side of the front direction of the case.

Another embodiment of the present invention comprises the steps of receiving a signal for starting the light balance control by the control unit provided in the lamppost or the outside; Receiving, by the controller, an illuminance value from each illuminance sensor mounted with a plurality of LEDs according to the signal; If the received illuminance value is equal to or less than a predetermined illuminance value, increasing the amount of current supply of the plurality of LEDs through a power supply unit electrically connected to the controller; Determining whether the detected illuminance value is detected by the increased current supply amount; And if the controller detects the set illuminance value from the illuminance sensor, the control unit maintains and supplies the increased current supply amount through the power supply unit.

In another embodiment of the present invention, a part of the LED is irradiated to the center line region of the roadway, and any one of the illuminance sensors is characterized by detecting the illuminance value of the reflected light from the centerline region.

In another embodiment of the present invention, the step of increasing the amount of current supply is characterized in that the control unit increases the current supplied from the power supply unit in a pulse width modulation (PWM) manner.

As described above, the present invention includes a plurality of luminescent lights in the direction of the center line of the road in the AD streetlight, and automatically corrected to the center line of the roadway and a predetermined illuminance value near the lane by using an illuminance sensor. And it is possible to improve the visibility of the driver by improving the light balance system near the lane.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is an exploded perspective view of the LED street light head according to the first embodiment of the present invention, Figure 3 is a perspective view after the assembly of the LED street light according to the first embodiment of the present invention.

As shown in FIG. 2, the LED street light 100 according to the first embodiment of the present invention includes a case 110 of a head of a street light, and a plurality of first LEDs 122 are mounted in the case 110 and are made of a metallic material. Body portion 120 formed on the upper plate 141 of the body portion 120 is provided with a front body portion 130 having a plurality of second LEDs 132 in the front direction of the case 110 LED street light head, the pole of the street lamp or the outside of the power supply unit, the power supply unit, the first illuminance sensor electrically connected to the first LED 122 and the second LED 132 and supplying power in a pulse width modulation (PWM) method A control unit (not shown) and an arm unit 150 electrically connected to the 129 and the second illuminance sensor 135 are provided.

The case 110 of the street lamp head includes a front floodlight plate 111 by forming a front opening in a front direction in the center line direction, and a lower floodlight plate 112 by forming a lower opening in a lower direction in a roadway direction. In addition, the case 110 forms an upper opening in an upward direction so that the first heat sink and the arm coupling part 125 provided on the rear surface of the body part 120 are exposed to the outside.

Body portion 120 is equipped with a plurality of LED (LED) 122, the front surface 123 consisting of a plurality of curved surfaces, the rear having a heat sink, the arm coupling portion 125, coupled to the arm portion 150, the front The upper and lower plates 141 and 142 covering the upper and lower portions of the first illuminance sensor 129 and the body portion 120 mounted at the center of the 123 are included. Here, the front surface 123 of the body portion 120 is formed of a plurality of curved surfaces corresponding to the lower floodlight plate 112, and provided with a printed circuit board (PCB) on the surface and the plurality of first LEDs 122 Mount the Article 1 sensor (129). In this way, the PCB on which the plurality of first LEDs 122 are mounted may be electrically connected to the power supply unit and the control unit by a wire (not shown) connected through the opening 125 of the arm coupling unit. Here, the arm coupling portion 125 is a cylindrical member having a hollow cross section that is an opening and formed in the longitudinal direction on the rear surface of the body portion 120 and may be coupled to an arm portion provided in the pillar of the street lamp.

The front body part 130 is a part mounted on the upper surface of the upper plate 141 in response to the front floodlight plate 111 of the case 110, and a plurality of second LEDs 132 and the first on the PCB in a curved shape The upper surface 131 mounted with the two illuminance sensors 135 and the lower surface provided with the plurality of second heat sinks may be provided. The front body 130 thus formed may be screwed to the top surface of the top plate 141 in an inclined form such that the top surface 131 corresponds to the center line direction of the roadway, and the wire connected to the PCB is connected to the top plate ( Electrical connection with an external control unit may be made through the hollow part 141-2 of 141.

As illustrated in FIG. 3, the LED street light 100 according to the first exemplary embodiment of the present invention is assembled by combining the arm coupling part 125 with the arm part 150, but a plurality of second LEDs 132. ) And the front body 130 equipped with the second illuminance sensor 135 may irradiate light toward the center line of the roadway through the front floodlight 111, and the plurality of first LEDs 122 and the first Light may be irradiated to the roadway through the body 120 having the illumination sensor 129 mounted thereon.

In particular, the housing of the front body 130 is a rounded curved surface to mount a plurality of second LED 132 and the second illumination sensor 135 to widen the light irradiation angle in the direction of the center line of the roadway, body portion 120 The front surface 123 may be formed of a plurality of curved surfaces corresponding to the lower floodlight plate 112 to widen the irradiation angle of the irradiation light and increase the amount of light to emit light. Here, the upper surface of the front body portion 130 and the front surface 123 of the body portion 120 may further include a reflective film (not shown) on the PCB for the irradiation of light generated from the LED (122,132).

In addition, the rear surface of the body portion 120 and the second heat sink of the front body portion 130, which form heat sinks on both sides of the arm coupling portion, are exposed to the outside through the upper opening of the case 110, and a plurality of air-cooled portions are air-cooled. The heat generated from the LEDs 122 and 132 may be radiated to prevent the degradation of the LEDs 122 and 132.

The first illuminance sensor 129 and the second illuminance sensor 135 provided at the front of the body part 120 and the center of the front body part 130 respectively measure the illuminance of the light reflected from the center line or the roadway. The controller may transmit the light to the first LED 122 and the second LED 132 through the power supply unit in a PWM manner.

Hereinafter, the LED street light 200 according to the second embodiment of the present invention will be described with reference to FIG. 4. 4 is an exemplary view of an LED street light according to a second embodiment of the present invention.

The LED street light 200 according to the second embodiment of the present invention includes a case 210 having a square metal material and a plurality of first LEDs 222 corresponding to the lower floodlight plate 212. Mounted in the 210 and mounted on the body portion formed of a metal material, the top plate of the body portion to mount a plurality of second LEDs 232 respectively corresponding to the two front floodlight plate 211 in front of the case 210 The LED street light head including the front body 231 and the arm 250 is composed of.

The case 210 of the head of the street light includes two front floodlights 211 by forming two front openings in both front and rear directions of the center line, and a lower floodlight 212 by forming lower openings in a downward direction of the roadway direction. ). In addition, the case 210 is similar to the case 110 of the LED street light 100 according to the first embodiment, and forms an upper opening in an upper direction corresponding to the second opening to form a first heat provided at the rear of the body part. Allow sink and arm joints to be exposed to the outside.

In the LED street light 200 according to the second embodiment of the present invention, the front body part 232 equipped with the plurality of second LEDs 232 has a curved shape corresponding to the two front floodlight plates 211. The front body 130 of the LED street light 100 according to the first embodiment may have a shape of an angled curved surface unlike the rounded surface. The light emitted by the plurality of second LEDs 232 by the curved front body 232 corresponding to the two front floodlights 211 is directional and irradiated to the lane near the center line in both directions in the center line direction. Can be.

Hereinafter, the LED street light 300 according to the third embodiment of the present invention will be described with reference to FIG. 5. 5 is an exemplary view of an LED street light according to a third embodiment of the present invention.

The LED street light 300 according to the third embodiment of the present invention includes a case 310 of a street lamp head made of a disc-shaped metal material, and a plurality of first LEDs 322 corresponding to the lower floodlight plate 312. A plurality of second LEDs 332 mounted in the case 310 and mounted on a body part formed of a metal material and a top plate of the body part to correspond to the front floodlight plate 311 in front of the case 310, that is, the center line direction. The LED street light head including the front body portion 331 mounted and the arm portion 350 is composed of.

The case 310 of the street light head includes a front floodlight plate 311 fitted into a rectangular front curved opening in a forward direction in the center line direction, and a lower floodlight plate 312 fitted in the lower opening in a downward direction in a driveway direction. Equipped. In addition, the case 310 is similar to the case 110 of the LED street light 100 according to the first embodiment, and forms a top opening in an upper direction corresponding to the second opening to form a first heat provided at the rear of the body part. Allow sink and arm joints to be exposed to the outside.

In the LED street light 300 according to the third embodiment of the present invention, the front body part 331 equipped with a plurality of second LEDs 332 has a curved shape corresponding to the front floodlight plate 311 of the case 310. The length of the front floodlight plate 311 along the side surface, that is, may extend at a predetermined angle, so that the light emitted by the plurality of second LEDs 332 is directional and irradiates widely to the lane including the centerline in the centerline direction. Can be.

LED street light (100, 200, 300) according to an embodiment of the present invention of such a configuration by measuring the illuminance of the light reflected from the roadway by using each of the illuminance sensor, and transmits to the control unit provided on the pillar or the outside of the street lamp, accordingly received from the controller Light emission for a plurality of LEDs may be controlled according to the control signal.

Hereinafter, a method for controlling the light uniformity of the LED street light to improve the uniformity of the roadway by using the LED street light according to the embodiment of the present invention will be described with reference to FIGS. 3 and 6. 6 is a flowchart illustrating a method for controlling light balance of an LED street light according to an exemplary embodiment of the present invention.

First, according to an embodiment of the present invention in a state in which a plurality of street lamps 100 shown in FIG. Receives and starts the light emission control of the street lamp 100 accordingly (S601).

For each of the street lamps 100, a signal for starting the optical bacterium automatic control may be transmitted from the outside to the controller of the street lamp pole or the wire from the outside to the controller of the first illuminance sensor 129 and the second. The illuminance sensor 135 may detect and receive reflected light illuminance near the center line and the lane, respectively.

As the light emission control of the street lamp 100 starts, the controller determines whether the illuminance value detected by the first illuminance sensor 129 and the second illuminance sensor 135 is less than or equal to the set illuminance value. (S602)

In detail, as the controller receives a signal for starting the light balance automatic control method, the controller detects the reflected light illuminance near the center line and the lane by the first and second illuminance sensors 129 and 135. The current supply amount of the power supply unit (not shown) is controlled according to the difference of the previously set illuminance value with respect to the illuminance value.

For example, when the illuminance value near the center line detected by the second illuminance sensor 135 is 20 lux, the controller may supply a current supply amount corresponding to the difference value of 10 lux with respect to 30 lux, which is a previously set illuminance value. The current supply amount of the power supply unit is controlled to increase the power, but the brightness of the plurality of second LEDs 132 is controlled by applying a pulse width modulation (PWM) control method to adjust the amount of voltage or current in the duty ratio of the pulse. By controlling, it is possible to control to prevent unnecessary power waste in the natural control and control process.

Therefore, the controller transmits a signal for controlling the amount of current supply to the power supply so as to adjust the brightness of the plurality of second LEDs 132 to correspond to 30 lux, which is a predetermined illuminance value, and thus the plurality of second LEDs 132. You can control the brightness of. Herein, the control unit may include an analog to digital conversion (not shown) for converting a signal for illuminance value input through the first and second illumination sensors 129 and 135 into a digital signal. Include.

In operation S602, the controller determines whether the illuminance value detected by the first illuminance sensor 129 or the second illuminance sensor 135 is less than or equal to the set illuminance value in comparison with the set illuminance value. The current supply amount is increased to be detected as the illuminance value, thereby causing the first LED 122 or the second LED 132 to emit light (S603).

Specifically, when the illuminance value detected through the first illuminance sensor 129 is detected as 20 lux, the control unit increases the current supply amount of the power supply unit by the PWM control method so as to detect 30 lux, which is the set illuminance value, to the second LED. The pulse width is controlled by controlling the amount of current supplied to the 132, and accordingly, the power supply unit adjusts the amount of current supplied to the second LED 132 by the control of the controller to adjust the amount of current supplied to the second LED according to the difference in illuminance value. 132 may adjust the brightness.

After increasing the amount of current supplied to the first LED 122 or the second LED 132 to emit light, the control unit sets the illuminance value detected through the first illuminance sensor 129 or the second illuminance sensor 135 to the set illuminance value. It is determined whether it is detected (S604).

If the illuminance value detected through the first illuminance sensor 129 or the second illuminance sensor 135 is not detected as the set illuminance value or less in the step S604 of determining whether the detected illuminance value is set, the control unit In step S603, the current supplying amount supplied from the power supply unit to the first LED 122 or the second LED 132 is increased again to emit the first LED 122 or the second LED 132.

If the illuminance value detected through the first illuminance sensor 129 or the second illuminance sensor 135 rises to the set illuminance value in step S604 of determining whether it is detected as the set illuminance value, the controller may control the first LED. The current supply amount of the 122 or the second LED 132 is maintained to emit light. (S605)

That is, the control unit causes the power supply unit to supply the first LED 122 or the second LED 132 by adjusting the amount of current through the PWM method, and thus, supply the first LED 122 or the second LED 132. The amount of current to be changed so that the first LED 122 or the second LED 132 is controlled in brightness and can maintain the appropriate brightness according to the set illuminance value.

Therefore, according to the present invention, according to the detected illuminance value of the illuminance sensor mounted with a plurality of ADs, the light intensity system in the center line and the lane of the roadway is improved by automatically correcting it to a predetermined illuminance value in the center line and the lane of the roadway. Improve the visibility of the driver.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiments are for the purpose of description and not of limitation.

In addition, those skilled in the art will understand that various implementations are possible within the scope of the technical idea of the present invention.

1 is an exemplary view of a street lamp having a conventional LED embedded therein.

Figure 2 is an exploded perspective view of the LED street light head according to the first embodiment of the present invention.

Figure 3 is a perspective view after assembling the LED street light according to the first embodiment of the present invention.

4 is an exemplary view of an LED street light according to a second embodiment of the present invention.

5 is an exemplary view of an LED street light according to a third embodiment of the present invention.

6 is a flowchart illustrating a method for controlling light balance of an LED street light according to an exemplary embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100,200,300: LED street light 110,210,310: case

120: body portion 122: the first LED

123: front 125: arm coupling

129: first illuminance sensor 130: front body portion

132: second LED 135: second illuminance sensor

141: top plate 150: arm portion

Claims (10)

A case of a street light head including an upper opening, a lower opening, and a front opening; A body part having a plurality of first LEDs and first illuminance sensors corresponding to the lower openings, and having an arm coupling part having a hollow columnar shape on one side of a rear surface thereof and mounted in the case; A front body part having a plurality of second LEDs and a second illuminance sensor corresponding to the front opening of the case and mounted on an upper plate of the body part; A power supply unit electrically connected to the first LED and the second LED at a pillar or outside of a street light and supplying power in a pulse width modulation (PWM) manner; A controller electrically connected to the power supply unit, the first illumination sensor and the second illumination sensor; And Arm portion coupled to the arm coupling portion of the body portion LED street light comprising a. The method of claim 1, The body unit includes the plurality of first LED on the front surface consisting of a plurality of curved surfaces, and the LED street light, characterized in that it comprises a plurality of first heat sinks in the rear with the arm coupling portion. The method according to claim 1 or 2, The front opening of the case is provided with a front floodlight plate as an opening in the center line direction, the lower opening of the case has a lower floodlight plate in the roadway direction, The upper opening of the case is LED street light, characterized in that formed to expose the first heat sink and the arm coupling portion provided on the rear of the body portion to the outside. The method of claim 1, The front body part has a rounded curved shape, wherein the plurality of second LEDs are provided on the upper surface and the plurality of second heat sinks on the lower surface of the LED street light. The method of claim 1, The upper surface of the front body portion LED street light, characterized in that provided corresponding to the direction of the center line of the driveway. The method of claim 1, The case is a cross-sectional shape of a rhombus, the LED street light, characterized in that the front opening is provided on each of the two sides in the front direction of the case. The method of claim 1, The case has a circular cross-sectional shape, the LED street light, characterized in that the front opening is formed extending along the side of the front direction of the case. delete delete delete

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