KR100907079B1 - Light system with high power led - Google Patents

Abstract

A light system with a high power LED is provided to facilitate an install and repair process by allow a work to replace and repair the LED module only a manual work without an additional apparatus. In a light system with a high power LED, a transparent window is formed at bottom of a lower cover(2). A top cover(3) is combined with the bottom cover to be rotatable, and the heat sink(30) emits heat generated in the light-emitting diode module. A reflector(10) reflects a light of the light-emitting diode module to the scan direction, and a receiving groove for the LED module is installed on a LED module installation face.

Description

Street light device using high power LEDs {LIGHT SYSTEM WITH HIGH POWER LED}

The present invention relates to a luminaire device using a high power LED, and more particularly, to a street lamp device used as a street lamp, a garden lamp by mounting a plurality of high output LED module.

LED (Light Emitting Diod) is widely used in all of you because of high luminous efficiency, high output at low current, long life and low power consumption. In particular, recently, LEDs for high power lighting have been developed due to the improvement of the LED chip structure, and the range of use for street lights, garden lights, parks, etc. is rapidly increasing.

However, in the case of street lamps, various conditions must be satisfied in accordance with the road laws. For example, a certain range of irradiation area should be illuminated with uniform illuminance, and light should be blocked in areas other than the target range for which the streetlight is irradiated so as not to obstruct people or crops therein (e.g., crops adjacent to the road surface). At night, the light must be cut off at night so that it does not interfere with the growth of the crop.)

However, the conventional LED luminaires have uneven illumination depending on the irradiation area due to the linearity of the LED light, and thus there is an unsuitable point as a street lamp.

In addition, the conventional luminaire using a high power LED has a structure that air-cooled the high temperature heat generated from the LED is not enough heat emission effectively shortened the life, there was a hassle to replace the LED in the luminaire frequently.

In addition, since the structure of assembling or installing the LED or LED module of the luminaire is complicated, a separate tool is used for the installation and the replacement work, so that the installation work and the replacement work take a lot of time.

The present invention is to solve the shortcomings of the conventional LED streetlight device, to provide an LED streetlight device having an improved installation structure to install or replace the LED module without a separate auxiliary tool.

In addition, another object of the present invention is to provide an LED street light apparatus that can irradiate light over a predetermined range with uniform illuminance without a relatively low illuminance in the irradiated area.

In addition, the present invention is another object to provide an LED street light device that can reduce the cost of the street lamp maintenance by extending the replacement cycle of the LED by preventing the degradation of the LED performance by dissipating the heat generated from the high-power LED .

LED street light apparatus of the present invention for achieving the above object, the bottom cover is provided with a transparent window on the bottom surface, the top cover rotatably coupled to the bottom cover, a plurality of LED modules and the LED module is attached and supported An LED street light device comprising an installation block, a heat dissipation mechanism for dissipating heat generated by the LED module, and a reflector for reflecting light of the LED module in an irradiation direction.

The installation block is attached to the inner surface of the upper cover via a heat dissipation pad, and provided with two LED module mounting surfaces inclined upward from the center in the width direction toward the left / right edge along the width direction,

Each LED module mounting surface is provided with a seating groove of the LED module, and one edge of the seating groove is connected to the board of the LED module and the wires connected to the electrical connector and the wires connected to the electrical connector are aligned and drawn out. Is formed,

At the edge of the LED module installation surface, a pressing plate for pressing and fixing one side of the LED module seated in the seating groove is fixed and fastened as a bolt.

Positioning projections are provided on the bottom surface of the front end of the pressing plate so that the pressing plate is accurately guided to the pressing position of the LED module, and the LED module mounting surface is provided with a positioning groove corresponding to the positioning protrusion.

In addition, the LED street light device of the present invention and the reflecting plate is attached to the inner surface of the lower cover, and the front diffusion reflecting surface inclined forward with respect to the vertical surface so that the light emitted from the LED module is reflected toward the longitudinal front A rear cut-off reflecting surface installed in a vertical direction to block light to the rear, and the reflecting plate includes a left reflecting surface disposed to reflect an LED light irradiated to some left in a direction exceeding a left target irradiation angle in a reverse direction; And a right reflecting surface that reflects the LED light irradiated to the right beyond the target rightward irradiation angle in the opposite direction.

The LED street light apparatus of the present invention includes a plurality of heat transfer pipes, one end of which is fitted to pass through the installation block, the other end of which extends to the outside of the installation block, and is filled with an endothermic fluid and sealed therein, through the heat transfer pipe. And a heat dissipation mechanism consisting of a heat sink block that absorbs the transferred heat and releases the absorbed heat in contact with the outside air.

According to the LED streetlight device of the present invention as described above, the operator can open the top cover, loosen the bolt provided on the top cover to loosen the pressure plate, and then install or replace the LED module. The LED module can be easily installed or replaced by manual operation, simplifying installation and maintenance.

In addition, the road lighting and light distribution can be efficiently achieved by simply seating the LED module on the LED module installation surface of the installation block inclined at a predetermined angle.

In addition, the LED streetlight device of the present invention can effectively discharge the high temperature heat generated by the high-power LED module used in the street lamp as a heat radiating mechanism to increase the life of the LED and prevent failure due to heat.

Hereinafter, an embodiment of the LED street light device according to the present invention will be described in detail according to the accompanying drawings.

The term referring to the direction below, ie, left, right, front and rear, means the direction when viewed from the front with the streetlight device installed on the side of the road so as to face the width direction of the road.

1 is a perspective view showing a part of the upper cover of the streetlight device of the present invention in an open state. As shown in FIG. 1, the street lamp device 100 of the present invention is supported by a street lamp column P, and includes a lower cover 2 and a lower cover 2 provided with a transparent window 1 and a reflecting plate 10. The upper cover (3) rotatably connected to the hinge and the installation block 20 is fixed to the inside of the upper cover (3) for installing the LED module.

The lower cover 2 is provided with an opening portion 2a having a part of the bottom open so that the LED modules 22a and 22b irradiate light toward the lower ground, and a transparent window 1 outside the opening portion 2a. ) Is attached. The reflecting plate 10 is attached to the inner side of the lower cover 2 at the opening of the lower cover 2.

Figure 2 shows a cross-sectional view showing the assembly structure of the mounting block and the assembly structure of the reflecting plate.

As shown in FIG. 2, an installation block 20 for installing an LED module is fixed to the inner bottom surface of the upper cover 3 by a bolt (not shown) sandwiching the heat dissipation pad 8 therebetween. The mounting block 20 has two LED module mounting surfaces 21a and 21b inclined upward from the center in the width direction toward the left and right edges when viewed from the front of the upper and lower covers 3 and 2. ). That is, the left and right LED module mounting surfaces 21a and 21b of the mounting block 20 are arranged in a pointed triangular shape downwardly toward the edges in the width direction at the portions in contact with each other. Preferably, the two LED module mounting surfaces 21a and 21b of the mounting block 20 are preferably disposed at an angle X between 110 degrees and 120 degrees in view of light distribution effect.

For convenience of explanation, the left LED module 22a installed on the left LED module installation surface 21a is referred to as a 'first LED module', and the right LED module installed on the opposite right LED module installation surface 21b ( 22b) is referred to as the 'second LED module'.

3 shows an exploded perspective view of the installation block.

As shown in Fig. 3, the LED modules 22a and 22b having a plurality of LEDs L mounted on the substrate S are detachably attached to each of the LED module mounting surfaces 21a and 21b. Each of the LED module mounting surfaces 21a and 21b includes mounting grooves 23a and 23b of the LED modules 22a and 22b, respectively, and the LED modules 23a and 23b are formed at one edge of the mounting grooves 23a and 23b. The wire drawing groove 26 is formed so that the electrical connector 24 coupled to the substrate S of FIG. 8) and the wiring 25 connected to the electrical connector 24 are aligned and drawn out.

As shown in Figure 4b, the pressing plate (27a, 27b) for pressing and fixing one side of the LED module (22a, 22b) seated in the mounting groove (23a, 23b) on one side of the mounting surface (21a, 21b) It is fixed by the bolts 29a and 29b. Long holes 28a and 28b are formed in the middle of the pressing plates 27a and 27b so that the bolts 29a and 29b penetrate the mounting holes 20 through the bolts 29a and 29b. The pressing plates 27a and 27b are pressed against the mounting block 20 by the fastening force of the upper side and press the upper surfaces of the LED modules 22a and 22b disposed below.

When the LED modules 22a and 22b are separated from the mounting block 20, as shown in FIG. 4A, the bolts 29a and 29b, which hold the pressing plates 27a and 27b, are released to press the plate 27a. Loosen (27b), and then retreat horizontally back out of the LED modules (22a, 22b), the LED module (22a, 22b) can be removed from the mounting groove (23a, 23b) of the mounting block 20 Will be.

In addition, the positioning grooves 27-2 are formed on the mounting block 20 so that the pressing plates 27a and 27b are accurately positioned at the pressing positions of the LED module, and the fitting grooves 27-2 and 27b are fitted into the positioning grooves 27-2. Positioning protrusions 27-1 are formed on the bottom faces of the pressing plates 27a and 27b. Therefore, when the LED modules 22a and 22b are pushed by the pressing plates 27a and 27b to fix them, the pressing plates 27a and 27b are moved to the pressing positions so that the positioning projections 27-1 of the pressing plates 27a and 27b are moved. When seated in the positioning groove (27-2) of the mounting block 20, the pressing plate (27a, 27b) is always placed in the correct pressing position.

In addition, when the upper cover 3 covers the lower cover 2 and is coupled, the reflection plate 10 installed on the inner side of the lower cover 2 is installed with the LED modules 22a and 22b of the upper cover 3 installed. It is arranged to surround the block 20.

The reflector 10 has a wide and uniform light distribution on the side of the street so that the light distribution of the street light device of the present invention conforms to the standard uniformity of the street light. Have slopes.

That is, the reflector 10 of the LED street light device of the present invention, as shown in FIG. Referred to, hereinafter referred to as " front ", and a forward diffused reflecting surface 11 that is inclined forward with respect to the vertical plane, and rearward (walkway direction in the width direction from the center of the lane, hereinafter " rear "). Has a rear cut-off reflecting surface 12 installed in a substantially vertical direction to block light. As shown in FIGS. 2 and 7, the reflecting plate 10 includes a left reflecting surface 13 arranged to reflect LED light irradiated to a part left in a direction opposite to the left at a target irradiation angle in the opposite direction (right). And a right reflection surface 14 which reflects the LED light irradiated to the right beyond the target rightward irradiation angle in the opposite direction (left).

Hereinafter, the effect of the light reflecting plate 10 in the left / right directions of the road will be described with reference to FIGS. 5 to 7.

The first LED module 22a attached to the left LED module mounting surface 21a of the mounting block 20 has a left direction at the installation position of the street lamp column P in which the LED street light device of the present invention is installed according to the installation direction thereof. The light is irradiated forward and backward. At this time, a part of the light irradiated in the left direction among the irradiation light of the first LED module 22a is reflected on the left reflection surface 13 and irradiated to the right along the path of 'RW2' in FIG. The light irradiated with the light irradiated along the path and irradiated backward is not irradiated backward beyond the pedestrian path by the rear cut-off reflecting surface 12 as shown in FIG. Is diffused forward by the forward diffusion reflecting surface 11 and irradiated.

On the other hand, the second LED module 22b is irradiated with light in the right direction, front and rear from the installation position of the street lamp column (P) is installed according to the LED street light device of the present invention. Even in this case, a part of the light irradiated in the right direction among the light of the second LED module 22b is reflected by the right reflection surface 14 and irradiated to the left along the path of 'LW2' of FIG. 6, and thus, along the 'LW1' path. The light irradiated together with the irradiated light and irradiated backward is distributed by the rear cut-off reflecting surface 12 so as not to be irradiated backward beyond the walkway, and the irradiated light forward is forward. The diffuse reflection surface 11 diffuses and spreads forward.

As shown in FIG. 5, the streetlight device of the present invention distributes light uniformly over a certain area of a car by the arrangement of the LED module and the structure of the reflector, and particularly, the illumination light is an area behind the sidewalk where the illumination light should be blocked. Light distribution to be blocked.

On the other hand, the LED street light device according to the present invention is provided with a heat dissipation mechanism 30 for effectively dissipating heat generated from the LED module. As shown in FIGS. 1 and 8, the heat dissipation mechanism 30 is inserted and supported so that one end penetrates the installation block 20, and the other end extends to the outside of the installation block 20, and an endothermic fluid is filled therein. A plurality of sealed heat transfer pipes 31 and a heat sink block 32 for absorbing heat transferred through the heat transfer pipes 31 and contacting and dissipating the absorbed heat with external air. The mounting block 20 and the heat sink block 32 are preferably made of aluminum alloy having high thermal conductivity or copper alloy.

The heat transfer pipe 31 is preferably made of a material having excellent thermal conductivity, such as copper alloy. Particularly, the endothermic fluid filled therein is a fluid generated in the LED module to receive heat transferred through the wall of the heat transfer pipe and vaporize into a gas. Anything is possible.

Therefore, when the LED street light device 100 is operated for a predetermined time, high temperature heat is generated in the LED module. The high temperature heat generated by the LED modules 22a and 22b is primarily transferred to the installation block 20, and the heat absorbed by the installation block 20 is transferred to the heat sink block 32 through the heat transfer pipe 31. Are delivered and released into the air. At this time, the endothermic fluid filled in the heat transfer pipe 31 absorbs heat corresponding to the heat of vaporization while being vaporized by the heat transferred from the side wall of the heat transfer pipe 31, so that the heat radiation effect of the heat transfer pipe 31 is achieved. Will increase even more.

As described above, the present invention facilitates the installation of the mounting block 20 in the upper cover 3, and separate tools for detachment to install or replace the LED modules 22a and 22b in the mounting block 20. It is easy to repair and maintain only by the operator's hand, without using. In particular, it is possible to increase the irradiation angle of the street lamp by the arrangement structure of the LED module and the reflector plate structure and to maintain the lighting state of the street lamp with effective light distribution.

1 is a perspective view showing a part separated in the open state of the upper cover of the street lamp device of the present invention installed in the street lamp column,

2 is a cross-sectional view of the street lamp device of the present invention;

3 is an exploded perspective view of the installation block;

Figure 4a is a view showing a step of fixing the fixing plate with a bolt so that the fixing plate presses the LED module, showing the process of mounting the LED module on the installation surface in the state in which the pressing plate is retracted by loosening the bolt,

4b is a view showing a state in which the LED module is pressed into the LED module seating groove of the installation block by pressing plate;

5 is a plan view for showing a light distribution state of the street lamp device of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5, showing side light distribution of a reflecting plate; FIG.

FIG. 7 is a cross-sectional view taken along the line B-B of FIG. 5 to show front and rear light distribution of the reflecting plate. FIG.

8 is a cross-sectional view cut along the longitudinal direction to show the heat radiating mechanism of the street lamp device of the present invention.

※ Explanation of code for main part of drawing

100: street light device of the present invention

P: street light Note 1: transparent window

2: lower cover 2a: opening

3: top cover 8: heat dissipation pad

10: reflector 11: forward diffuse reflection surface

12: Rear cut-off reflective surface 13: Left reflective surface

14: right reflective surface

20: Installation block 21a, 21b: LED module installation surface

22a, 22b: LED module L: LED

S: substrate 23a, 23b: mounting groove

24: electrical connector 25: wiring

26: wiring lead groove 27a, 27b: pressing plate

27-1: positioning projection 27-2: positioning groove

28a, 28b: long hole 29a, 29b: bolt

30: heat dissipation mechanism 31: heat transfer pipe

32: heatsink block

Claims (3)

A lower cover 2 having a transparent window 1 on the bottom surface, an upper cover 3 rotatably coupled to the lower cover 2, a plurality of LED modules 22a and 22b, and the LED module Irradiation direction of the installation block 20 which attaches and supports 22a, 22b, and the heat radiating mechanism 30 which discharges the heat which generate | occur | produces from the said LED modules 22a, 22b, and the light of LED modules 22a, 22b. In the LED street light device having a reflector 10 for reflecting, The mounting block 20 is attached to the inner surface of the upper cover 3 via a heat dissipation pad 8, and two LEDs inclined upward from the center in the width direction toward the left / right edge along the width direction. The module mounting surfaces 21a and 21b, Each of the LED module mounting surfaces 21a and 21b is provided with mounting grooves 23a and 23b of the LED modules 22a and 22b, and one edge of the mounting grooves 23a and 23b is provided with the LED modules 23a and 23b. A wire drawing groove 26 is formed to align and draw the electrical connector 24 coupled to the substrate S of the wire and the wiring 25 connected to the electrical connector 24, and At the edges of the LED module mounting surfaces 21a and 21b, the pressing plates 27a and 27b for pressing and fixing one side of the LED modules 22a and 22b seated in the mounting grooves 23a and 23b are bolts 29a and 29b. Fixed with) Positioning protrusions 27-1 are provided on the bottom surface of the front end of the pressing plates 27a and 27b so that the pressing plates 27a and 27b are accurately guided to the pressing positions of the LED modules 22a and 22b. The street lamp device using the high output LED, characterized in that the positioning groove (27-2) corresponding to the positioning projection (27-1) is formed on the surface (21a, 21b). The method of claim 1, The reflector 10 is attached to the inner side of the lower cover 2, and the forward diffusion half inclined forward with respect to the vertical plane so that the light emitted from the LED modules 22a and 22b is reflected toward the longitudinal front. The slope 11, the rear cut-off reflecting surface 12 installed in the vertical direction to block the light rearward, and the reflecting plate 10 emit the LED light which is irradiated to the part left beyond the target irradiation angle in the left direction. High power characterized by having a left reflecting surface 13 arranged to reflect in the opposite direction and a right reflecting surface 14 reflecting the LED light irradiated to the right beyond the target rightward irradiation angle in the opposite direction. Street light device using LED. The method according to claim 1 or 2, The heat dissipation mechanism 30 is inserted and supported so that one end penetrates through the installation block 20, and the other end extends to the outside of the installation block 20, and a plurality of heat transfer pipes 31 filled with endothermic fluid are sealed therein. And a heat sink block (32) for absorbing heat transferred through the heat transfer pipe (31) and emitting the absorbed heat in contact with external air.

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