KR101861707B1 - Light guide plate assembly structure of LED edge light - Google Patents

Abstract

In a structure of an LED edge light, disclosed is a light guide plate assembly structure of an LED edge light. The structure comprises: a housing four sides of which are finished with an edge frame; an LED module installed in the edge frame; and a light guide unit for uniformly distributing light of the LED module and emitting the light in a right downward direction. The bottom of the edge frame supports an edge of the light guide unit, provides a surface for attaching the LED module and also includes a heat dissipation unit for radiating heat of the LED module. The LED module includes a substrate, an LED package and a dummy package and is arranged to face a side surface of a light guide plate of the light guide unit. The dummy package is formed to be thicker than the LED package to prevent the facing light guide plate of the light guide unit from contacting the LED package. According to the present invention, damage to the LED package can be prevented and security can be obtained by installing a dummy LED package unrelated to a circuit to avoid interference of the LED package and the light guide plate, and a lifespan of a product can be extended since heat generated by the LED module can be radiated promptly by attaching a heat dissipation sheet to the LED module and the edge frame.

Description

[0001] The present invention relates to a light guide plate assembly structure,

The present invention relates to a light guide panel assembly structure of LED edge illumination.

In recent years, LED (light emitting diode) devices have been spotlighted as light sources for various lighting apparatuses. These LED devices have less heat generation and power consumption than conventional light sources such as incandescent lamps and fluorescent lamps, This is a long advantage.

In addition, LED lighting does not use mercury or discharge gas such as fluorescent lamps, so it does not cause environmental pollution problems. Such LED devices require about 100,000 hours or more when providing adequate power supply and heat dissipation means Can be used.

In this way, since it has a relatively longer life than other light sources, it is widely used as a light source for various illumination lamps instead of fluorescent lamps. Recently, in order to enhance the effect of interior decoration by illumination, An illuminating device has been developed and used for indirectly irradiating light to the inner side of the frame by way of a separate light guide plate.

In such a lighting apparatus, four straight frames are connected to each other by an 'a' -shaped corner connecting piece, and an LED module is installed on the inner side of each frame so as to irradiate light in a horizontal direction. And the LED module constituting the LED module is indirectly irradiated to the upper part or the lower part through the light guide plate emitted from the LED module.

As a prior art of such an illumination device, Korean Registration Patent Publication No. 10-1160816 (entitled "Edge Type Light Emitting Diode Lighting Device, hereinafter referred to as" Prior Art 1 ") has been proposed.

In the prior art 1, a 'frame' is installed on a ceiling to form an illumination space between frames through a combination of at least two frames; Emitting means disposed on the inner surface of the frame so that the LEDs are continuously arranged on the circuit board; And a cover plate disposed on the rear side of the light guide plate and fixed to the frame body to fix the light guide plate to the frame, the light guide plate having an outer circumferential surface supported by the frame and disposed in the frame and the illumination space, And the two or more frames are integrally fixed by friction stir welding (FSW) at each end.

LED Edge Lighting refers to LED lighting related to 'edge' which means 'edge' or 'edge', and it is widely used internationally such as LED expo and various LED seminars Is a state-of-the-art illumination system designed to scan a one-dimensional light source horizontally to a two-dimensional light guide plate and direct the light perpendicularly to the plane of the light guide plate without loss of light.

However, the edge type of the prior art 1 must inevitably improve the uniformity of the light emitting surface and the light efficiency by using a light guide plate. However, there is a limit in improving the uniformity and the light efficiency due to the gap between the LED package and the light guide plate have.

That is, during the manufacturing process, interference between the LED package and the light guide plate can cause a short circuit and damage to the LED package. Even if there is no interference of the light guide plate, if the LED is lit for a long time, interference due to shrinkage and expansion of the light guide plate may occur and interference with the LED package may occur due to minute movement of the light guide plate during transportation or installation.

Meanwhile, another example of the LED edge illumination is disclosed in 'edge plate type LED light fixture using photometry (Registration No. 10-1575584, hereinafter referred to as Prior Art 2)'.

In the prior art 2, a 'U' -shaped fitting portion in which a light transmitting plate is inserted is formed at one side, and an insertion hole for inserting a PCB having an LED for emitting light to the side of the light transmitting plate is formed to communicate with the fitting portion. And a plurality of corner connection ports are coupled between the frame frames to form a rectangular plate-shaped lamp unit, wherein a coupling protrusion is formed on both sides of the corner connection port, the locking protrusion being provided with a locking protrusion, A protrusion hole in which the locking protrusion is inserted is formed in the protrusion coupling portion to form a coupling protrusion hole having a coupling hole in which the coupling protrusion is fitted, and the corner coupling protrusion can be coupled to the protrusion frame in a one- A glare panel, which reflects radiated light to the rear of the luminaire, is detachably coupled to the upper side of the frame frame, And a light guiding part which is positioned to surround a part of the plate and reflects light emitted from the light guiding plate is provided and a finishing part which is extended in a stream line at the rear end of the light guiding part and reflects light guided from the light guiding part to the rear of the frame is formed And an engaging part protruding from the engaging part is formed on the upper surface of the engaging part so that the engaging part engages with the engaging piece And the glare panel is coupled to the upper side of the frame frame.

In this prior art 2, the assembling property can be improved and the wire can be assembled in such a manner that the wire can not be seen by forming a wire fitting portion that can embed a wire connected to the PCB on the back surface of the fitting portion of the frame. The glare panel reflecting the light to the rear of the luminaire is removably coupled to the upper side of the frame frame so that the frame frame can not be seen from the outside, thereby improving the aesthetics of the luminaire and preventing the dark part of the luminaire from being generated If repair is required, it is difficult to separate the glue panel and the glue corner connector, and to separate the frame frame.

Registration number 10-1575584 (public announcement date: December 8, 2015)

It is an object of the present invention to maximize uniformity and light efficiency by minimizing the distance between an LED package and a light guide plate in an LED edge lighting apparatus.

In addition, instead of combining the conventional LED module with a sliding method, the heat generated by the LED module is transmitted to the structure through the heat-dissipating sheet, and the temperature of the LED module is adjusted by fixing the fixture with the heat- And to improve uniformity and light efficiency by minimizing the distance between the LED package and the light guide plate.

Another object of the present invention is to provide an LED edge lighting device capable of quickly separating and assembling even one operator in maintenance of an LED edge lighting device.

It is another object of the present invention to prevent interference between the light guide plate and the LED package during assembly of the LED edge lighting device, thereby preventing the LED circuit from being short-circuited.

It is an object of the present invention to provide a structure of an LED edge light which has a housing closed at four sides with an edge frame, an LED module installed at the edge frame, And a heat dissipation part for supporting the edge of the light guide part and for radiating heat of the LED module while providing a surface to which the LED module is to be adhered, And the dummy package is formed to be thicker than the LED package so as to prevent the light guide plate of the opposed light guide portion from contacting the LED package. Can be achieved by a light guide panel assembly structure.

The light guiding plate assembly structure of the LED edge light may further include a fixing unit fixed to the ceiling and supporting one side of the housing and opening the housing to a hinge type when the housing is released from the ceiling.

Here, the fixing part includes a ceiling fixing part fixedly attached to the ceiling, an extending part extending downward from one side of the ceiling fixing part, a mounting part extending horizontally from the extending part and extending to the outside of the ceiling fixing part, A first housing supporting part extending upward in a ceiling direction and having a shorter length than the extending part, the edge frame of the housing being engaged with the engaging part to support the housing; And a fixing groove for inserting a safety pin for stably fixing the housing and the fixing portion is formed in the locking portion and the second housing supporting portion, .

The light guide plate assembly structure of the LED edge light is characterized in that when the housing is opened to the hinge type by the first housing support portion and the engaging portion while the safety pin is released, A wire connected to one side; And a buffer member connecting the wires to each other to alleviate the opening speed.

According to the present invention, in order to avoid interference between the LED package and the light guide plate, a dummy LED package (DUMMY LED PACKAGE) which is not related to a circuit is mounted to prevent breakage of the LED package, to secure the stability of the circuit, By attaching to the sheet, the heat generated from the LED module can be discharged quickly, thus extending the service life of the product.

Also, the distance between the LED module and the light guide plate is minimized, so that the light efficiency and uniformity of the light diffusion surface can be improved.

In addition, the present invention enables quick separation and assembly even with one operator at the time of maintenance of the LED edge lighting apparatus, thereby shortening maintenance time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a light guide plate assembling structure of an LED edge light according to an embodiment of the present invention,
Fig. 2 is an enlarged view of an AA sectional view and an edge frame portion of Fig. 1,
Fig. 3 is a detailed view of main parts of a part of Fig. 2,
4 is a perspective view of the LED module according to the present invention,
5 is a cross-sectional view taken along line A0-A0 in Fig. 1,
6 is a perspective view (plane side) of a light guide plate assembly structure of LED edge illumination according to another example of the present invention,
FIG. 7 is an exploded perspective view of FIG. 6,
8 is a view showing an example of a perspective view (bottom side) and a safety pin of another angle of a light guide plate assembly structure of LED edge illumination according to another example of the present invention,
9 is a plan view of a light guide panel assembly structure of LED edge illumination according to another example of the present invention,
Fig. 10 is a sectional view taken along line BB of Fig. 9,
11 is a view showing an operation in which the housing of the light guide plate assembly structure of LED edge illumination according to another example of the present invention is opened to the hinge type by the fixing portion,
12 is a view showing a state in which a buffer member for buffering the opening speed is added when the housing of the light guide plate assembly structure of LED edge illumination according to another example of the present invention is opened to the hinge type,
13 is a block diagram of a control device of the LED lighting apparatus according to the present invention,
FIG. 14 is a diagram showing an embodiment of a control apparatus for an LED lighting apparatus according to the present invention,
15 is a view showing another embodiment of the control apparatus of the LED lighting apparatus according to the present invention,
16 is a view showing still another embodiment of the control apparatus of the LED lighting apparatus according to the present invention,
17 is a view showing still another embodiment of the control apparatus of the LED lighting apparatus according to the present invention,
18 is a block diagram of an SMPS of a control apparatus of an LED lighting apparatus according to the present invention.

The present invention relates to a light guide plate assembly structure for LED edge illumination, in which the distance between the LED package of the LED edge light and the light guide plate is minimized to maximize uniformity and light efficiency.

In addition, instead of combining LED modules in a sliding manner as in the conventional method, the heat generated by the LED modules is transferred to the structures through the heat-dissipating sheet, and the temperature of the LED modules To minimize the distance between the LED package and the light guide plate, thereby improving uniformity and light efficiency.

In order to avoid interference between an LED package and a light guide plate, a dummy package having no relation to a circuit is mounted to prevent breakage of the LED package and ensure stability of the circuit. The LED module is bonded to the heat- The generated heat can be discharged quickly, and the life of the product can be extended. Also, since the distance between the LED module and the light guide plate can be minimized, the light efficiency and uniformity of the light diffusing surface can be improved.

The light guide plate assembly structure of the LED edge light according to the preferred embodiment of the present invention is characterized in that the structure of the LED edge light includes a housing 110 A light guide portion for uniformly dispersing the light of the LED module and diverging in a downward direction; and a light guide portion for facilitating assembly of the LED module and the light guide portion, And a mechanical part for improving uniformity.

The edge frame 120 receives the LED module and supports the edge of the light guide portion. Specifically, the lower side of the edge frame 120 includes a heat dissipating portion 124 for supporting the edge of the light guiding portion and providing a surface to which the LED module is to be adhered while simultaneously dissipating heat of the LED module.

The light guiding unit includes a light guide plate 1122, a reflective sheet 1121 stacked on the light guide plate 1122, and a diffusion plate 1123 provided below the light guide plate 1122.

The LED module includes a substrate 1101, an LED package 1102 and a dummy package 1103 as shown in FIGS. 2 to 4, and is arranged to face the side surface of the light guide plate 1122 of the light guide portion. The dummy package 1103 is formed thicker than the LED package 1102 to prevent the light guide plate 1122 of the opposed light guide portion from contacting the LED package 1102. The LED module 1102 is thus prevented from contacting the LED package 1102 even if the light guide plate 1122 is deformed due to heat, thereby preventing the LED package 1102 from being damaged. That is, when the light guide plate 1122 is thermally deformed and tries to contact with the LED package 1102, the dummy package 1103 is interrupted to protect the LED package 1102.

"와 같은 형상일 수 있다. 이와 같은 방열부(124)는 LED 모듈이 접착될 면을 제공하면서 동시에 LED 모듈의 열을 방열한다. LED 모듈은 "

"와 같은 형상의 방열부(124)의 측면에 접착제로 부착됨으로써 도 2의 상,하부 가이드(1111,1112)의 구성을 제외시킬 수 있고, 열을 방열하므로 도광판(1122) 및 주변 구성의 열변형을 줄일 수 있다.The heat radiation portion 124 of the edge frame 120 is formed at the bottom of the edge frame 120 as shown in FIG. 2,

The heat dissipating portion 124 dissipates the heat of the LED module at the same time while providing the surface to which the LED module is to be adhered.

2 can be excluded from the configuration of the upper and lower guides 1111 and 1112 of FIG. 2 by being adhered to the side surface of the heat dissipating portion 124 having a shape like that of the light guide plate 1122 and the heat- The deformation can be reduced.

The structure for cutting off the contact between the light guide plate 1122 and the LED package 1102 when thermal deformation occurs in the light guide plate 1122 may include a plurality of dummy packages 1103 and upper and lower guides 1111 and 1112, A combination of the lower guides 1111 and 1112 and the dummy package 1103 may be used.

The upper and lower guides 1111 and 1112 are arranged such that the center O of the width of the light guide plate 1122 is aligned with the center O of the LED package width as shown in Figs. Thereby facilitating the installation of the LED module. Specifically, the back surface of the substrate 1101 of the LED module is adhered to the side surface of the heat dissipating portion 124 with an adhesive, and the upper guide 1111 has one side of the light guide plate 1122 and the lower side of the edge frame 120 has the light guide plate 1122 And the lower guide 1112 supports one side of the substrate 1101 so that the center O of the width of the light guide plate 1122 can be aligned with the center O of the LED package width, . The upper and lower guides 1111 and 1112 are formed with bumps 1111b and 1112b for preventing the side surface of the light guide plate 1122 from contacting the LED package 1102. [

When the structure for preventing contact between the side surface of the light guide plate 1122 and the LED package 1102 includes a plurality of dummy packages 1103, the upper and lower guides 1111 and 1112 may be omitted, When the guides 1111 and 1112 are provided, the configuration of the dummy package 1103 may be omitted. When the dummy package 1103 and the upper and lower guides 1111 and 1112 are combined with each other, only the middle portion of the LED module is installed on the upper and lower guides 1111 and 1112, A dummy package 1103 is installed.

6, a LED lighting unit of the edge illumination type is embedded and is fixed to the ceiling, and the same structure as that of the housing 110 And a fixing part 140 which is fixed to the ceiling and supports one side of the housing 110 and opens the housing 110 to a hinge type when the housing 110 is released from the ceiling.

The fixing part 140 can be fixed to the ceiling by fixing means such as a bolt or the like. The housing 110 is also fixed to the ceiling by bolts or the like irrespective of the fixing portion 140. The edge of the housing 110 is rectangular and is finished with an edge frame 120 and connected between the edge frame 120 and the edge frame 120 by a coupling 130. The housing 110 can be fixed to the ceiling by the coupling 130 and fastening means such as bolts. Meanwhile, the housing 110 can be prevented from being suddenly opened by being fixed to the fixing part 140 by the safety pin 150 described later even if the bolt of the coupling 130 is disassembled and separated from the ceiling.

6 to 12, the fixing part 140 includes a ceiling fixing part 141 fixedly attached to the ceiling 1000, an extension part 142 extending downward from one side of the ceiling fixing part 121, A seating part 143 extending horizontally from the extending part 142 and extending to the outside of the ceiling fixing part 141 and an extending part 142 extending upward from the seating part 143 in the direction of the ceiling 1000, And includes an engagement portion 144 having a short length in contrast.

The housing 110 is closed at four sides with an edge frame 120. The edge frame 120 includes a first housing support part 121 for holding the housing 110 by being caught by the retaining part 144, The first housing support portion 121 includes a second housing support portion 122 formed to receive the housing 110 while being downwardly extended from one side of the first housing support portion 121.

The locking part 144 and the second housing supporting part 122 are formed with fixing grooves for inserting the safety pin 150 for stably fixing the housing 110 and the fixing part 140, The safety pin 150 is inserted into the fixing groove and the housing 110 is stably fixed to the fixing portion 140.

The safety pin 150 is installed in the first and second fixing bars 152 and 153 so that the other sides of the first and second fixing bars 152 and 153 are opened from each other, And the elastic pieces 151 are connected to one side of the fixing bars 152 and 153. When the openings of the first and second fixing bars 152 and 153 are narrowed and inserted into the fixing grooves, 110 and the fixing portion 140 can be firmly fixed.

Meanwhile, when the housing 110 is opened by releasing the safety pin 150, the following structure may be added to reduce the opening speed. That is, in order to alleviate the opening speed of the housing 110, the present invention connects one side of the fixing part 140, the wires 161 and 162 connected to one side of the housing 110, and the wires 161 and 162 And a buffer member 163 for relieving the opening speed. The buffer member 163 may be a common spring.

Hereinafter, the operation of the light guide plate assembling structure of the LED edge illumination constructed as described above will be described.

When the operator wishes to repair or replace the LED edge lighting by an abnormal operation of the LED lighting unit provided inside the housing 110, the operator firstly removes the bolts fixed on the ceiling through the coupling 130 do. At this time, in order to prevent the coupling 130 from being damaged, it is preferable to separate the bolts while supporting the bottom surface of the housing 110 with one hand. Next, when the safety pin 150 is removed, the housing 110 is opened to the hinge type with the first housing support part 121 of the housing 110 being supported by the locking part 144. [ At this time, wires (161, 162) connected to one side of the fixing part (140), one side of the housing (110), and a cushioning member (163) connecting the wires (161, 162) Can be relaxed.

As described above, the present invention can improve the separation speed of the housing 110 when the LED edge light is repaired or replaced by a simple operation, and the opening degree of the housing 110 can be adjusted to an operator's eye level, So that the operation speed is remarkably increased. In addition, since the above procedure can be reversed even in the case of replacement, the assembling process is simple, quick assembly is possible, and the worker can perform it alone. In addition, since the buffering function is added to the opening speed of the housing 110 due to the weight of the housing 110 by the buffering member, the impact of the housing 110 and the fixing unit 140 at the time of the instantaneous drop, Safety is assured.

Meanwhile, the LED lighting apparatus and the control apparatus thereof applied to the light guide panel assembly structure of the LED edge lighting according to the present invention include a sensor unit for detecting an object entering the underground parking lot The LED illumination device 30 is set to a maximum permissible brightness according to whether the sensor sensing signal of the sensor unit 10 is input or the LED lighting fixture 30 is set to a maximum allowable brightness contrast ratio And a control unit 20 for controlling the brightness to be a brightness.

The control unit 20 is connected to the first converter 42 that supplies power to the LED lighting apparatus 30 so that the LED lighting apparatus 30 can output the maximum allowable brightness when the object sensing signal is input, The LED lighting device 30 is connected to the second converter 41 that supplies the corresponding power so that the LED lighting device 30 is output with a brightness equal to or less than the set allowable brightness contrast ratio.

When the object sensing signal is inputted and the object sensing signal is not inputted after the LED lighting apparatus 30 and the first converter 42 are connected, the control unit 20 controls the LED lighting apparatus 30 and the first The connection of the converter 42 is released, and the LED lighting device 30 and the second converter 41 are connected.

Specifically, as shown in FIG. 13, the control apparatus of the LED lighting apparatus includes a sensor section 10, a control section 20, and an LED lighting apparatus 30 (a plurality of). The sensor unit 10 has a main function of detecting an object entering the underground parking lot. There are vehicles, motorcycles, etc. that enter underground parking lots, for example. And, preferably, detecting a person. Although not particularly suggested, the sensor unit 10 for sensing a vehicle, a motorcycle, or a person entering the underground parking lot may include an infrared sensor for detecting motion, a pressure sensor for measuring the magnitude of pressure or movement, a PSD sensor , And an ultrasonic sensor using a piezoelectric and a warp sensor. Or a module that receives the signal of the elevator. For example, when a person is aboard the elevator and presses the underground two layers, the input value may be transmitted to the sensor unit 10 to become the object detection signal. The sensor unit 10 may be provided for each of the LED lighting apparatuses, or one for each of a plurality of LED lighting apparatus groups.

The control unit 20 controls the LED lighting device 30 such that the LED lighting device 30 is set to the maximum allowable brightness or the LED lighting device 30 is set to the maximum allowable brightness contrast ratio The LED lighting device 30 is connected to a first converter 42 that supplies power to the LED lighting device 30 so that the LED lighting device 30 can output the maximum allowable brightness, The LED lighting device 30 is connected to the second converter 41 that supplies the corresponding power so that the LED lighting device 30 is output with a brightness equal to or less than the set allowable brightness contrast ratio.

When the object sensing signal is inputted and the object sensing signal is not inputted after the LED lighting apparatus 30 and the first converter 42 are connected, the control unit 20 controls the LED lighting apparatus 30 and the first The connection of the converter 42 is released, and the LED lighting device 30 and the second converter 41 are connected. The first and second converters 42 and 41 are mounted on one LED lighting fixture 30. If the output value of the converter for the maximum allowable brightness is 40W, the first converter 42 may be the 40W converter. If the output value of the converter for the brightness equal to or less than the preset allowable brightness ratio is 8W, 8W converter.

The reason why the present invention uses two converters (low-cost compared to a dimming-type converter) is that the efficiency of a conventional dimming-type converter is higher than that of a low-output control. For example, in the case of using a conventional dimming converter (2-step dimming), 20% of the output is turned on at normal (unrecognized object), and 100% is turned on at the time of sensor operation. Assuming a converter with output 40W, only 8W of sensor is output at the same time. When the sensor is activated, it outputs 40W. However, when only 20% of the output of a 40W converter is output, the light efficiency drops when compared to the output of the output 8W converter. On the other hand, when the present invention is assumed as a 40W parking lot, etc., it is composed of 8W and 40W converters. When the sensor is not working, the circuit is connected and output by 8W converter. When the sensor is operating, it is connected to two converters built in the device and output simultaneously, or 40W converter is connected. At this time, the sensor unit 10 or the converter is provided with a relay that receives a signal of a sensor and operates only a specific signal, thereby constituting a circuit. In addition, it is possible to add a circuit that can be lit for a predetermined time and set a lighting time when the sensor is operated in the sensor unit 10 (within the sensing range) If the sensor is activated, the driver's view may be disturbed, which may lead to faults or accidents.

Referring to FIG. 14, a control device of the LED lighting apparatus includes a control unit 20, that is, a relay 21 , 22) are installed. smps (switched mode power supply) -1 is 8W second converter 41, smps-2 is 40W first converter 42, and 30 is LED lighting equipment. The LED lighting apparatus 30 receives the commercial power through the first relay 21 and the second converter 41 built in the sensor unit 10. Since the output of the second converter 41 is 8W, the LED lighting apparatus 30 outputs the brightness corresponding to 20% of the maximum brightness. However, when the sensor unit 10 recognizes an object, the first relay 21 cuts off the second converter 41 and the LED lighting unit 30 turns on the second relay 22 and the first converter 42 And is supplied with commercial power. Since the output of the first converter 42 is 40 W, the brightness corresponding to 100% of the maximum brightness is output.

Referring to FIG. 15, the controller of the LED lighting apparatus is a type in which the control unit 20, that is, the relays 21 and 22 are installed in the first and second converters 42 and 41, respectively. 16, the controller of the LED lighting apparatus includes a control unit 20, a third relay 23, and a bypass circuit (not shown) in which a commercial power source is directly connected to the second converter 41 without passing through the sensor unit 10 24) are combined. As described in the embodiment, the LED lighting apparatus 30 of the normal (object-unaware) operation receives the commercial power through the second converter 41. Since the output of the second converter 41 is 8W, the LED lighting apparatus 30 outputs the brightness corresponding to 20% of the maximum brightness. When the sensor unit 10 recognizes an object, the LED lighting apparatus 30 receives the commercial power through the first converter 42. [ Since the output of the first converter 42 is 40 W, the brightness corresponding to 100% of the maximum brightness is output.

The control device of the LED lighting apparatus includes the sensor unit 10 and the first and second converters 42 and 41 for each LED lighting apparatus 30, but the sensor unit 10 of any one of the LED lighting apparatus 30 When an object is detected, all of the grouped LED lighting apparatuses 30 can be output at a maximum brightness at a time.

Referring to FIG. 16, the control unit of the LED lighting apparatus includes a control unit 20 and a relay power supply line 24. The relay 23 is installed in the sensor unit 10 and the constant power supply line 24 is connected directly to the second converter 41 starting from the commercial power supply line at the front end of the sensor unit 10. [ Accordingly, the second converter 41 of 8W is always driven, and when the sensor unit 10 is sensed, the relay 23 is operated to further drive the first converter 42 of 40W.

In order to supply power to the LED lighting apparatus 30, an earth leakage breaker 50 is connected between the commercial power source and the first and second converters or between the commercial power source and the first and second relays 21 and 22 Can be installed. The control unit 20 may further include a wireless communication control module 23 for controlling the commercial power output of the first and second converters 41 and 42 and for communicating with the integrated control center 60.

That is, the LED lighting apparatus 30, the first and second converters 41 and 42 for supplying power to the LED lighting apparatus 30, the first and second converters 41 and 42, And a control unit 20 including a wireless communication control module 23 for communicating with the center 60. In such a configuration, the first and second converters 41 and 42 are controlled according to whether the sensor unit 10 is detected or not. However, in some cases, the LED lighting apparatus 30 may be selectively / This is useful when you need to do batch control. For example, when it is intended to visually discriminate whether there is an abnormality in the brightness of the LED lighting apparatus 30 installed in the underground parking lot, that is, when it is desired to identify the LED lighting apparatus 30 requiring repair, The LED lighting apparatus 30 can be easily distinguished from the plurality of LED lighting apparatuses 30 by the naked eye. Also, it is useful to partially illuminate the LED lighting fixtures of all the permanent LED lighting fixtures that need to be inspected when inspecting the facilities of the underground parking lot.

It is important that the power supplied to the LED lighting apparatus according to the present invention is stably supplied. FIG. 18 is a block diagram of an SMPS device supplied to a control device such as an LED according to the present invention.

The SMPS device supplied to the LED converts AC power to DC power, and supplies the DC power to a control device such as an LED by a DC / DC converter. FIG. 18 is a detailed view of the DC / DC converter . The configuration of the AC / DC converter will now be described in detail with reference to FIG. 18. Referring to FIG. 18, when the input voltage is inputted, the voltage is passed through the filter 1, which is removed by the input OVP 4, The half wave and the radio wave input are switched by the controller, and the voltage is boosted or depressed through the transformer 2 again. The signal switched by the PWM frequency is switched by the FET device, which also senses the current of the drain former 2 and inputs the PWM control signal. The signal boosted by the transformer is filtered by an LC filter, which is a low-pass filter, to become an output voltage. An overvoltage protector (5) is provided at the output voltage terminal to suppress the occurrence of an overvoltage. The PWM controller 6 is a PWM input frequency generating circuit for dividing the input voltage, and the PWM controller 6 is connected to the overheat protection circuit 8. The overheat protection circuit 8 detects overheating of the DC / DC converter circuit of the synchronous rectification type switching regulator and transmits an overheat detection signal to the control unit. In addition, the transformer 2 amplifies or drops the input voltage, and the voltage is usually determined in proportion to the ratio of the number of windings of the primary side and the secondary side of the transformer 2. In order to measure the current of the transformer 2, a current sensor 7 is provided. In general, a current sensor using a Hall effect and a current sensor using a current loop are used as a current sensor. If the current value of the current detector is more than a certain voltage, the control circuit senses it and sends an overcurrent message and cut off the power if necessary. The switching device of AC voltage in the DC / DC converter circuit of the synchronous rectification type switching regulator usually uses the FET and applies the voltage to the gate terminal of the FET to turn on and off the FET. The LC filter connected to the output voltage stage is a low-pass filter and is used to smooth the voltage. The PWM controller is capable of remote monitoring by transmitting communication signals remotely. To prevent this, the stability of the capacitance value is increased by changing the capacitance value of the conventional Tantalum capacitor to the stable MLCC capacitor even when the temperature rises, thereby preventing the frequency distortion according to the temperature.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

110: Housing
120: Edge frame
130: Coupling
140:
150: Safety pin

Claims (4)

In the structure of the LED edge illumination,
A LED module mounted on the edge frame; and a light guiding part uniformly dispersing the light of the LED module and diverging in a downward direction,
A lower side of the edge frame includes a heat dissipating portion for supporting an edge of the light guiding portion and providing a surface to which the LED module is to be adhered while simultaneously dissipating heat of the LED module,
And a fixing unit fixed to the ceiling and supporting one side of the housing and opening the housing to a hinge type when the housing is unfixed from the ceiling,
Wherein the fixing part includes a ceiling fixing part fixedly attached to the ceiling, an extension part extending downward from one side of the ceiling fixing part, a mounting part extending horizontally from the extending part and extending to the outside of the ceiling fixing part, And a fastening portion extending upwardly, the fastening portion having a shorter length than the extending portion,
The edge frame of the housing includes a first housing support portion which is caught by the retaining portion and supports the housing and a second housing support portion which is downwardly extended from one side of the first housing support portion and whose tip ends are supported by the housing,
Wherein the locking part and the second housing supporting part are formed with fixing grooves for inserting a safety pin for stably fixing the housing and the fixing part,
The LED module is arranged to be a substrate, the LED package and the pile of packages and, opposite to the side of the light guide portion guide plate, the piles of packages is thicker than the LED package to the light guide plate light guiding portion opposite to prevent the contact with the LED package, Wherein the light guide plate is mounted on the light guide plate.
The method according to claim 1,
The back surface of the substrate of the LED module is attached to the side surface of the heat dissipation part with an adhesive so that the center of the width of the light guide plate and the center of the width of the LED package are matched and the installation of the light guide plate and the LED module is facilitated, And the lower portion of the edge frame supports the other side of the light guide plate, and the lower guide supports one side of the substrate.
delete The method according to claim 1,
As the safety pin is released and the housing is opened to the hinge type by the first housing support and the latch,
A wire connected to one side of the fixing part and one side of the housing;
And a buffer member connecting the wires to each other to reduce an opening speed of the light guide plate.

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