KR101058901B1 - Scenery lighting device using led - Google Patents

Abstract

PURPOSE: A scenery lighting device using an LED is provided to intercept large amount of heat transferred to a driving unit while LED devices are turned on by separating a head unit and a driving unit. CONSTITUTION: In a scenery lighting device using an LED, an LED circuit board(150) comprises a plurality of LED elements. A substrate contact plate(131) is closely adhered to the rear side of the LED circuit board. A head heat sink(130) includes a plurality of heat radiation fins and a substrate accommodation fixing unit A driving part(300) comprises a driving part front cover(370), a driving unit case(320), a power module(380), and an LED driver(341) The driving part front cover comprises the LED circuit board of a head unit and the power module of the driving part, a wire portion(373), and a cover plate(371).

Description

LED lighting device {Scenery lighting device using LED}

The present invention relates to a landscape lighting installed in a facility such as a bridge, a park, various sculptures, and so on to illuminate the facility and the surrounding landscape, in order to use to produce a beautiful night view of the city, and in particular, an energy-efficient LED device is used as a light source. In the meantime, the present invention relates to an LED landscape lighting device capable of releasing heat generated during illumination to the outside and effectively protecting internal devices and circuits.

Recently, as the quality of life has improved, much attention has been paid to not only comfortable living environments but also urban aesthetics. In such a situation, various convenience facilities are installed in the city center and surrounding areas, and in order to create a more atmospheric night view for users who use the facilities, the lighting is installed in the main part of the facility and the surrounding landscape, thereby creating a more mysterious and beautiful atmosphere. I direct a night view of the.

A light emitting diode (LED) is an optoelectronic device in which energy corresponding to a band gap of a semiconductor is emitted as light when a voltage is applied to a junction structure of a P-type and an N-type semiconductor. Compared with general light bulbs, it is faster and consumes less than 20% of incandescent lamps. In particular, the power consumption is relatively low, but the brightness is very bright.

At present, many landscape lightings are made of fluorescent or incandescent lamps, which consume a lot of energy, and are difficult to produce various colors by expressing or blinking in various colors. Many attempts have been made to use LEDs as a light source for landscape lighting. However, in the case of using an LED device, heat generated together with light from the device becomes a problem. If the temperature itself of the LED device is raised by the heat generated during operation, there is a problem that the luminous efficiency of the LED device itself decreases above a certain temperature. In addition, a landscape lighting lamp including most LED devices uses a driver for driving the LED devices, and a lot of zeros may occur during operation in the driver, thereby affecting the LED devices. Therefore, there is a great need to develop a new type of LED landscape lighting device improved heat dissipation characteristics that can solve this problem.

The present invention has been made to solve various problems including the above problems, and an object of the present invention is to use a plurality of power LED device, the heat generated from the LED device may not affect the driver and power board, and at the same time The company offers a new type of LED landscape lighting that ensures that the heat generated by the driver and power board does not affect the LED devices.

An object of the present invention as described above comprises a head portion, a center heat sink and a driving portion,

The head portion,

An LED circuit board on which a plurality of LED elements are disposed; And

A circular plate in close contact with a rear surface of the LED circuit board, a plurality of heat dissipation fins disposed radially around a central portion of the rear surface of the circular plate, and a circular plate disposed around the circular plate and the LED circuit board together with the circular plate. It includes a head heat dissipation unit having a substrate accommodating fixing portion for forming a space for accommodating,

The driving unit includes a driving unit front cover, a driving unit case, a power module and an LED driver module,

The front cover of the driving unit includes a wiring unit through which wires for electrically connecting the LED circuit board of the head unit, the power module of the driving unit, the LED driver module, and the control board passes, and the inner space of the driving unit case in combination with the driving unit case. It has a rear plate for sealing,

The driving part case is a member having a hollow part, and receives the power module and the LED driver module inside the hollow part, and the heat generated from the power module, the LED driver module and the control board inside the driving part case on the surface of the driving part case. Are arranged with a plurality of heat dissipation fins to discharge the light to the outside,

The power module generates and supplies operating power for LED elements disposed on the LED circuit board,

The LED driver module functions to control light emission of the LED elements disposed on the LED circuit board, and is installed to be in contact with the semiconductor elements, a driver circuit board on which the semiconductor elements are disposed, and the semiconductor elements. And a heat sink for a semiconductor device having a height from the driver circuit board having the highest height among all members installed on the driver circuit board, and a gap pad attached to an upper portion of the heat sink.

The center heat sink is disposed in close contact with each of the heat dissipation fins constituting the head rear heat sink disposed in the head heat dissipation unit to block heat generated from the LED elements from being transmitted from the head unit to the driving unit. By providing a landscape lighting device.

Here, the heat dissipation fins are disposed in the center heat sink to form an air flow passage in the vertical direction, and a through hole is formed in the center portion of the center heat sink to pass through the wiring portion of the front cover of the driving unit.

The head rear heat sink is disposed with a space in the center of the circular plate-like member, so that the wiring portion of the front cover of the driving portion is located in the space of the central portion, and the front end portion of the wiring portion is fixed to the circular plate.

Here, leg fixing portions 135 are formed at both sides of the substrate accommodating fixing portion 133 of the head heat dissipating portion 130, and upper ends of the rear legs 400, which are U-shaped members, are rotated, respectively. It is fixedly possible, the upper end of the front leg, which is a U-shaped member is rotatably fixed to the middle portion of the rear leg 400, the lower end of the rear leg and the lower end of the front leg respectively contact the ground, The connection between the rear leg and the leg fixing portion, the connection between the front leg and the rear leg is made by a rotatable pin joint, the rotation of the pin joint may be limited by the anti-rotation projection and the through hole By adjusting the rotation angles of the rear legs and the front legs, it is preferable that the LED landscape lighting apparatus can adjust the angle of the light shining with respect to the object to be illuminated.

According to the present invention, by using the center heat sink, and configured to separate the head portion and the drive portion, it is possible to effectively block the transfer of a large amount of heat generated during the light emission of the LED elements to the drive unit located in the rear, so that The thermal stability of the members can be easily ensured.

1 is an exploded perspective view of the LED landscape lighting apparatus according to the present invention.
2 is a front view of the LED landscape lighting apparatus of the present invention.
3 is a plan view of the LED landscape lighting apparatus of the present invention.
Figure 4 is a side view of the LED landscape lighting apparatus of the present invention.
5 is a cross-sectional view taken along the line VV of FIG.
6 is a cross-sectional view taken along the line VI-VI of FIG.
7 is a perspective view of the LED driver module.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 is an exploded perspective view of the LED landscape lighting apparatus according to the present invention, Figure 2 is a front view of the LED landscape lighting apparatus of the present invention, Figure 3 is a plan view of the LED landscape lighting apparatus of the present invention 4 is a side view of the LED landscape lighting apparatus of the present invention, FIG. 5 is a sectional view taken along the line VV of FIG. 2, and FIG. 6 is taken along the line VI-VI of FIG. A cross-sectional view is shown and a perspective view of the LED driver module is shown in FIG.

As shown in the figure, the LED landscape lighting apparatus 1000 according to the present invention includes a head portion 100, the center heat sink 200 and the driving unit 300.

The center heat sink 200 is disposed to be in close contact with the head rear heat dissipation fins 132 disposed on the head heat dissipation unit 130 of the head unit 100 so that the LED elements 151 may emit light during the light emission from the head unit 100. The heat generated from the function to block the transfer to the drive unit 300. The heat generated during the operation of the plurality of LED elements 151 is very large compared to the heat generated by the driver 300. When the heat is transmitted to the driver 300, the LED driver 341 located in the driver 300 is located. ), The power module 380, the control board 350, such as a problem is very likely to occur in the function. When the head unit 100 and the driving unit 300 are separated into separate cases as in the present invention, and the center heat sink 200 is disposed therebetween, heat of the head unit 100 is transferred to the driving unit 300. You can effectively block yourself from becoming.

The head part 100 includes a head front cover 110, a front base plate 120, an LED circuit board 150, and a head heat dissipation part 130.

The head front cover 110 serves to protect the LED elements 151 performing a light emitting function, and may be made of glass or transparent plastic material through which light is transmitted. In addition, when light emitted from the LED elements 151 is diffused at a predetermined angle without going straight ahead, a diffusion plate (not shown) may be provided in front of the head front cover 110, and the head front surface may be provided. The cover 110 may be provided with fixing means such as a fastening hole 111 for fixing the diffusion plate to fix the diffusion plate.

The front base plate 120 is a member formed with a plurality of lenses, each lens corresponding to the LED element 151 of the LED circuit board 150 to diffuse laterally among the light generated from the LED element 151 Thus, the light does not emit to the front of the LED landscape lighting device 1000 functions to adjust the path of the light to be emitted to the front of the LED landscape lighting device.

The LED circuit board 150 is a circuit board on which a plurality of power LED devices 151 are arranged, and the power LED devices 151 are arranged on a metal PCB which is advantageous for heat dissipation. In general, the power LED device 151 is suitable for landscape lighting because of the high light emission brightness, but the heat generation amount is large, it is necessary to effectively configure the heat radiation structure.

The head heat dissipation unit 130 includes a substrate contact plate 131, a plurality of head rear heat dissipation fins 132, and a substrate accommodating fixing part 133. When the planar shape viewed from the front of the LED circuit board 150 has a circular shape, the substrate contact plate 131 is a plate-shaped member whose planar shape is circular in correspondence with the planar shape of the LED circuit board 150. The head rear heat dissipation fins 132 are installed on the surface opposite to the surface on which the LED circuit board 150 is seated in the substrate contact plate 131, and a plurality of the head rear radiating fins 132 are radially based on the center of the substrate contact plate 131. Is placed. The head rear heat dissipation fins 132 are disposed to have a space in the center of the circular plate-like member, so that the wiring portion 373 of the driver front cover 370 to be described below is located in the space of the center.

The substrate accommodating fixing part 133 may be fixed using fixing means such as the head front cover 110 and a screw, and the LED circuit together with the substrate contact plate 131 and the head front cover 110. A space for accommodating the substrate 150 and the front base plate 120 is formed. As shown in the drawing, the substrate accommodating fixing part 133 may be an annular member disposed along the circumference of the substrate contact plate 131, and the fixing part heat dissipating fin 133a is formed on the surface of the substrate accommodating fixing part 133. ) May be placed.

Leg fixing parts 135 are formed at both sides of the substrate accommodating fixing part 133 of the head heat dissipating part 130, so that the LED landscape lighting apparatus 1000 can emit light at a predetermined angle with respect to the object to be illuminated. The legs can be fixed so that the irradiation angle can be adjusted. In the illustrated embodiment, the leg includes a front leg 500 and a rear leg 400 as shown in the figure. The rear leg 400 is a U-shaped member, the upper end of which is rotatably fixed to both sides of the substrate receiving fixing part 133, respectively, and the lower end is placed on the ground. The front leg 500 is a U-shaped member, the upper end of which is rotatably fixed to the middle of the rear leg 400, the lower end is placed on the ground. The connection portion between the rear leg 400 and the substrate receiving fixing portion and the fixing portion of the front leg 500 and the rear leg 400 are rotatably fixed, but due to the weight of the LED landscape lighting apparatus 1000. It can be fixed so as not to rotate arbitrarily. For example, the connection between the rear leg and the leg fixing portion, the connection between the front leg 500 and the rear leg 400 is made by a rotatable pin joint, the rotation of the pin joint is one side It may be limited by the anti-rotation protrusion formed in the through hole formed on the other side.

The driving unit 300 includes a driving unit front cover 370, a driving unit case 320, a driving unit 300 rear cover, a power module 380, an LED driver 341, and a control board 350.

The driving unit front cover 370 may be electrically connected to the LED circuit board 150 of the head unit 100, the power module 380 of the driving unit 300, the LED driver 341, and the control board 350. And a cover plate 371 having a wiring part 373 through which electric wires pass, and sealing an inner space of the driving part case 320. The cover plate 371 may be a plate-shaped member having a substantially circular planar shape, and the wiring portion 373 may protrude from the central portion of the cover plate 371 toward the head portion 100 and be disposed therein. It is a member in which the wiring extension part 373b is formed so that wiring can pass. A wiring part through hole 373a is formed at the front end of the wiring part to allow the electric wire to pass therethrough. Cover heat dissipation fins 372 are disposed on the surface of the head portion 100 side of the cover plate 371.

The driving part case 320 is a member in which a hollow part is formed, and accommodates a power module 380, an LED driver 341, and a control board 350 inside the hollow part. On the surface of the driving unit case 320, a plurality of driving units 320 may smoothly discharge heat generated from the power module 380, the LED driver 341, and the control board 350 inside the driving unit case 320 to the outside. The driving unit heat dissipation fins 320a are disposed. A plurality of screw holes may be formed along the circumference of the driving unit case 320 and the cover plate 371 so that the driving unit case 320 may be fixed to the cover plate 371 of the driving unit front cover 370. Can be. A rubber packing 311 may be interposed between the driving part case 320 and the driving front cover 370 to be waterproof.

The power supply module 380 may use a switching mode power supply (SMPS) for generating and supplying operating power for the LED elements 151 disposed on the LED circuit board 150. The power module 380 may be in close contact with the driving unit case 320 by using a side cap 360 made of a material having excellent thermal conductivity so that heat generated during operation may be discharged to the outside. That is, the side cap 360 is positioned in the space between the power module 380 and the driver case 320 so that the power module 380 can be fixed in the driver case 320 and at the same time the power module 380. The heat generated from the heat transfer is transmitted to the driving unit case 320 and the driving unit heat dissipation fin 320a on the surface thereof through the side cap 360 to be discharged to the outside.

The LED driver 341 includes a driver substrate 347, a plurality of semiconductor devices 348, a heat sink 345 for a driver, and a gap pad 346. The LED driver 341 functions to control light emission of the LED elements 151 disposed on the LED circuit board 150, and is also heated in the semiconductor elements 348 disposed in the LED driver 341. This happens. In order to radiate this heat to outside, each semiconductor element 348 which generate | occur | produces heat is provided in contact with the heat sink 345 for semiconductor elements provided on the board | substrate of the LED driver 341, and this heat sink for semiconductor elements ( 345 is configured to facilitate the heat transfer with the drive case 320. A gap pad 346 of a high thermal conductivity and soft material (eg, silicon) is attached to the top surface of the heat sink 345 for the semiconductor device for smooth heat transfer and protection of the LED driver 341. In the LED driver 341, the member having the highest height from the driver substrate 347 is the heat sink 345 for the semiconductor device, and the gap pad 346 is disposed between the heat sink 345 for the semiconductor device and the driver case 320. Attaching to fill the gap, while protecting the LED driver 341 from external impact, the heat generated from the LED driver 341 can be smoothly discharged to the outside through the driver case 320 and the driver heat dissipation fin 320a on the surface. Can be.

An additional LED driver bracket 343 may be installed to fix the LED driver 341 to the inside of the driving unit case 320, and the LED driver 341 fixed on the LED driver bracket 343 may be mounted on the LED driver bracket. Along with 343, it is referred to as an LED driver module 340.

The control board 350 is a member that performs a function such as control of the overall light emission level according to the ambient temperature of the LED landscape lighting apparatus of the present invention, a portion in which the driving unit case 320 is connected to the head portion 100. It may be disposed at the opposite end of the. The control board 350 may be connected to an external power source. The control board 350 may be fixed to an end of the driving unit case 320, and a separate inlay bracket 330 may be disposed on the control board 350 to protect the control board 350.

For example, the control board 350 may be adjusted to reduce the amount of heat emitted from the head by slightly lowering the total light emission when the ambient temperature is higher than a predetermined level. Such a function may be achieved by setting the amount of light emission in advance in consideration of the average temperature of the fat used in the apparatus of the present invention, but by installing a separate temperature sensor on the control board, the total amount of light emission according to the temperature detected by the temperature sensor It may be made in such a way as to prevent the function of the entire apparatus from being degraded by the heat generated from the head. In particular, considering that the heat dissipation method of the LED landscape lighting apparatus of the present invention is a method of naturally dissipating heat to the surrounding outdoor air, the cooling function is deteriorated in a place where the outside air temperature is high, so the head portion in this way It is very useful to ensure the thermal stability of the and components of the drive unit.

In the following description of the present invention, the embodiments illustrated in the drawings have been described with reference to the embodiments, which are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. I will understand the point. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: head portion 110: head front cover
111: bolt fastener 120: front base plate
130: head radiator 131: substrate contact plate
131a: through hole 132: heat dissipation fin at the back of the head
133: substrate accommodating fixing portion 133a: fixing portion heat dissipation fin
135: leg fixing part 150: LED circuit board
151: LED element 200: center heat sink
201: heat dissipation fin 210: through hole
300: drive unit 310: wiring unit closing plate
311: rubber packing 320: drive unit case
320a: drive unit heat dissipation fin 330: inlay bracket
340: LED driver module 341: LED driver
343: LED driver bracket 345: heat sink
346: gap pad 347: driver substrate
348: semiconductor device 350: control board
360: side cap 370: drive front cover
371: cover plate 372: cover heat radiation fin
373: wiring section 373a: wiring section through hole
373b: wiring extension 380: power supply module
400: rear leg 500: front leg
1000: LED landscape lighting device

Claims (4)

Head portion 100, the center heat sink 200 and the drive unit 300,
The head portion 100,
An LED circuit board 150 on which a plurality of LED elements 151 are disposed; And
A substrate contact plate 131 in close contact with a rear surface of the LED circuit board 150, a plurality of heat dissipation fins disposed radially around a central portion on a rear surface of the substrate contact plate 131, and the substrate contact plate 131. A head heat dissipation part 130 disposed around the substrate and having a substrate accommodating fixing part 133 formed together with the substrate contact plate 131 to form a space for accommodating the LED circuit board 150.
The driver 300 includes a driver front cover 370, a driver case 320, a power module 380, and an LED driver 341.
The driving unit front cover 370 may be electrically connected to the LED circuit board 150 of the head unit 100, the power module 380 of the driving unit 300, the LED driver 341, and the control board 350. A wiring part 373 through which an electric wire passes, and a cover plate 371 coupled to the driving part case 320 to seal an inner space of the driving part case 320.
The driving unit case 320 is a member in which a hollow part is formed, and accommodates the power module 380 and the LED driver 341 in the hollow part, and the driving part case 320 inside the driving part case 320. A plurality of heat dissipation fins 320a for discharging heat generated from the power module 380, the LED driver 341, and the control board 350 of the power supply unit 380 are disposed.
The power module 380 generates and supplies operating power for the LED elements 151 disposed on the LED circuit board 150,
The LED driver 341 functions to control light emission of the LED elements 151 disposed on the LED circuit board 150. The semiconductor elements 348 and the semiconductor elements 348 are disposed on the LED driver 341. A heat dissipation plate 345 for a semiconductor element which is installed to be in contact with the driver circuit board and the semiconductor elements 348, and the height from the driver circuit board is the highest among all members installed in the driver circuit board; And a gap pad 346 attached to an upper portion of the heat sink 345 for the semiconductor device.
The center heat dissipation plate 200 is disposed in the head heat dissipation unit 130 to block heat generated from the LED elements 151 from being transmitted from the head unit 100 to the driving unit 300 during light emission. LED landscape lighting device arranged to be in close contact with the two head rear heat radiation fins (132). The method of claim 1,
Heat dissipation fins are disposed in the center heat sink 200 so that air flow passages are formed in the vertical direction, and through holes are formed in the center portion of the center heat sink 200 so that the wiring part 373 of the front cover 370 of the driving unit may be formed. Is arranged to penetrate,
The head rear heat dissipation fin 132 is disposed with a space in the center of the circular plate-shaped member, so that the wiring portion 373 of the driving unit front cover 370 is located in the space of the central portion, and the front end of the wiring portion 373 is provided. The part is fixed to the substrate contact plate (131), LED landscape lighting apparatus characterized in that. The method of claim 1,
A temperature sensor installed at the rear of the driving unit to sense an ambient temperature;
LED landscape lighting apparatus further comprises a control board for adjusting the total amount of light emission of the LED elements in the head in consideration of the temperature measured by the temperature sensor. The method of claim 1,
Leg fixing parts 135 are formed at both sides of the substrate accommodating fixing part 133 of the head heat dissipation part 130, and upper ends of the rear legs 400, which are U-shaped members, are rotatable, respectively. It is fixed, the upper end of the front leg which is a U-shaped member is rotatably fixed to the middle portion of the rear leg 400, the lower end of the rear leg and the lower end of the front leg respectively contact the ground, the rear The connection between the leg and the leg fixing portion, and the connection between the front leg and the rear leg is made by a rotatable pin joint, the rotation of the pin joint may be limited by the anti-rotation protrusion and the through hole, By adjusting the rotation angles of the rear legs and the front legs, the LED landscape lighting field is adjusted to the angle at which the LED landscape lighting device illuminates the object to be illuminated. .

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