JP6339199B2 - LED lighting fixtures - Google Patents

Description

  The present invention relates to an LED lighting apparatus, and more particularly, to an LED lighting apparatus that has excellent heat dissipation characteristics and easy light distribution control.

  Illumination devices using existing light source means such as incandescent lamps and fluorescent lamps have a problem of high power consumption and short lifetime. Considering such problems, lighting devices that use LEDs with low power consumption and long life as light sources have been developed. When the LED is used as a light source, the lifetime is remarkably increased as compared with the existing lighting device. As a result, the amount of waste can be greatly reduced and environmental pollution can be prevented. In addition, it is expected that power consumption will be reduced and energy will be saved.

  However, the LED has a problem of generating a large amount of heat in spite of such advantages. When the heat generated by the LED is not released to the outside, the life of the LED lighting apparatus is shortened, and the long life effect due to the use of the LED as a light source is hardly exhibited as it is.

  Further, the LED lighting device requires a power supply device (Switching Mode Power Supply: SMPS) that converts an external AC power source to a DC power source and supplies the LED to the LED. For example, Korean Utility Model Registration No. 20-0451090 discloses a case where an LED is mounted as an LED landscape illumination lamp with a built-in SMPS and the SMPS is positioned so as to face the support surface through a support surface. . However, the SMPS itself generates heat. Therefore, the LED landscape illumination lamp has a problem in that the heat generated in the SMPS and the heat generated from the LED interact with each other to reduce the lifetime of the SMPS and the LED.

  On the other hand, a high power LED lighting fixture (usually 100 watts or more) among LED lighting devices generally uses a high power LED chip (for example, a 1 watt LED chip) as a light source. This is because in the case of low power LED chips (FIG. 1), a relatively large number of chips must be used (see FIG. 1) compared to high power LED chips (FIG. 2), thereby arranging This is because it is difficult to control light. For example, in order to provide a high power of 100 watts, 100 high power chips of 1 watt are required, but 500 low power chips of 0.2 watt are required, and the number of light sources is increased and light distribution is increased. It becomes difficult to control. In particular, when providing high-power lighting within a predetermined area to replace existing lighting, the higher the number of LED chips, the more difficult it is to control the light distribution. For this reason, high-power LED chips are used. Has been.

  However, high power LED chips generate more heat than low power LED chips and must make more efforts to dissipate heat. Thus, in spite of the deterioration of the heat dissipation characteristics, a high power LED chip has to be used to make the light distribution control easier.

  As described above, when a high-power lighting fixture is realized using a high-power LED chip, a large heat dissipation means is required to solve the heat dissipation problem, thereby increasing the volume and weight of the device, and the manufacturing cost. The problem of rising further occurred. In particular, in the case of floodlighting, since the size of the lighting fixture is large and the amount of power consumption is very large, there is a demand for a lighting fixture that is small in size and low in power consumption.

  Accordingly, the present invention has been made in view of the above-described problems of the prior art, and its purpose is to easily release the heat generated from the LED and prevent the generated heat from being conducted to the surroundings. In addition to the above, it is an object to provide an LED lighting apparatus that controls light distribution in a desired form.

  Another object of the present invention is to provide an LED lighting apparatus that blocks heat conduction between a power supply unit and a lighting unit.

To achieve the above object, according to one aspect of the present invention, an illumination unit for generating light comprises a plurality of LED as a light source, comprising an opening on one side, the other side a housing having an interior space and includes a light emitting unit that emits light to the outside, and c Woojin the inner surface of the grayed, provided the light generated et al or the illumination unit so as to reflect the light emitting unit reflecting portion, It is provided so as to be exposed to the outside at the back of the lighting unit and a heat emission unit that emits heat to the outside, the lighting unit has its front toward the interior space of Haujin grayed so as to cover the opening installation is, the light emitting unit, LED lighting fixtures to be installed so as to emit light generated et or lighting unit, or emits light that is reflected through the illumination unit or et reflective portion is provided.

According to another aspect of the present invention, to form an illumination unit comprising a substrate multiple low power LED chips are mounted, a bottom surface, a first inclined surface forming a bottom surface and an acute angle, and a bottom surface and an acute angle And a second inclined surface coupled to the first inclined surface, the bottom surface, the first inclined surface, and the bottom surface so that the internal space is formed with the second inclined surface as a boundary. a housing inclined surfaces and that the ends of the second inclined surfaces are connected, and a reflective portion which is disposed to reflect light generated from the lighting unit to the inside surface of the wafer Woojin grayed, at least the illumination unit some low power LED chips to direct the inner space of Haujin grayed, LED lighting instruments inserted through a portion of the first inclined surface is provided.

  The present invention is not only excellent in heat dissipation characteristics and manufacturing efficiency, and has high productivity, but also reduces the overall weight and volume of the final product, and can smoothly control light distribution, thereby having an effect applicable to various fields. .

It is a figure which shows the arrangement | sequence of the LED chip of the LED lighting fixture by one Embodiment of this invention. It is a figure which shows the arrangement | sequence of the LED chip of the LED lighting fixture by other embodiment of this invention. It is a disassembled perspective view of the LED lighting fixture by one Embodiment of this invention. It is sectional drawing which shows the assembly state of the LED lighting fixture of FIG. It is sectional drawing which shows the inclination | tilt angle of the reflective surface of the LED lighting fixture of FIG. It is a plane perspective view of the LED lighting fixture by one Embodiment of this invention by which the reflection part was installed in the side surface. It is a disassembled perspective view of the fixed frame applied to the LED lighting fixture by one Embodiment of this invention. It is a perspective view of the LED lighting fixture by other embodiment of this invention. It is a side view of the LED lighting fixture of FIG. It is an enlarged view which shows a part of LED lighting fixture of FIG. It is sectional drawing which shows the LED lighting fixture by one Embodiment of this invention. It is a figure which shows light emission of the LED lighting fixture in case the inclination | tilt angle a is 0 degree | times. It is a figure which shows light emission of the LED lighting fixture in case the inclination | tilt angle a is 45 degree | times. It is the light distribution map and LED illuminance table which show the LED lighting fixture by one Embodiment of this invention.

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

  FIG. 3 is an exploded perspective view of an LED lighting apparatus according to an embodiment of the present invention. 4 is a cross-sectional view showing an assembled state of the LED lighting apparatus of FIG.

LED luminaire according to an embodiment of the present invention, the lighting unit 100 for generating light comprises a plurality of LED as a light source, comprising an opening 220 on one side, the light emission to emit light to the outside on the other side housing 200 having an interior space comprises a section 210, the inner surface of the housings 200, reflective portion 230 which the light generated from the lighting unit 100 is placed so as to reflect the light emitting unit 210,及Vitel Ming The heat release part 120 is provided on the back surface of the part 100 so as to be exposed to the outside and discharges heat to the outside. In the LED lighting apparatus, the front surface of the illumination unit 100 is installed toward the internal space of the housing 200 so as to cover the opening 220, and the light emission unit 210 emits light generated from the illumination unit 100 or performs illumination. It is installed to emit light reflected from the part 100 through the reflection part 230.

1. Illumination Unit As shown in FIG. 3, according to an embodiment of the present invention, the illumination unit 100 includes a substrate 110, a plurality of LEDs 111 disposed on the substrate 110, and a metal plate 130 that supports the substrate 110. An LED chip is preferably used as the LED light source. As this LED light source, a COB (chip on board) type LED chip may be used.

  The LED chip is preferably a low power LED chip. As the low-power LED chip, a chip of 0.1 watt to 0.6 watt, preferably 0.2 watt to 0.5 watt can be used. Low power LED chips provide the same output in the same area, but use a larger number of chips compared to higher power LED chips with higher power, so the spacing between adjacent chips is more narrowly distributed Is done.

  FIGS. 1 and 2 each show that a low power LED chip 111 and a high power LED chip 111 are arranged on an illumination part of an LED lighting apparatus according to an embodiment of the present invention, specifically, a substrate. It shows that. As shown in FIGS. 1 and 2, an LED lighting apparatus using low power LED chips has five 0.2 watt LED chips aligned in a unit area (indicated by “A” in the drawing) ( FIG. 1) LED lighting fixtures using high power LED chips are aligned with one 1 watt LED chip (FIG. 2). According to these figures, the interval between the low power chips indicated by “d1” in FIG. 1 is narrower than the interval between the high power chips indicated by “d2” in FIG. Although not shown, an LED luminaire according to a modified embodiment of the present invention has 10 0.1 watt LED chips, 0.25 watt LED chips per unit area according to desired design specifications and / or client requirements. Four LED chips or two 0.5 watt LED chips can be aligned.

  Since each LED chip 111 serves as a heat transfer point and a heat source for transferring heat, an LED lighting apparatus using a low power LED chip according to an embodiment of the present invention uses heat generated from the LED chip as a substrate. Can be transmitted or released more uniformly. A low power LED chip is cheaper than a high power LED chip, consumes less power, and generates a smaller amount of heat than a high power LED chip. Also, the low power LED chip has higher brightness efficiency than the high power LED chip. For example, in theory, five 0.2 watt LED chips have a lumenal difference per watt between each beam bundle and the beam bundle of one 1.0 watt LED chip. That is, the 0.2 watt LED chip has about 160 lm / w, while the 1.0 watt LED chip has about 1401 m / w, which means that the light efficiency of the low power LED chip is high power LED It means higher than the light efficiency of the chip.

  According to one embodiment of the present invention, high power LED chips (eg, LED chips of about 1 watt or more) can also be used. When a high power LED chip is used, the heat generated from the chip has a relatively high temperature compared to the low power chip, which may cause a heat island situation. Also, the distance between adjacent chips within the same area may be farther from the low power LED chip, making heat conduction difficult. In a high power LED chip, such a problem may shorten the lifetime of the LED chip. Therefore, heat dissipation design is most important for high power LED chips. Therefore, when using a high-power LED chip, it is desirable to provide as much as possible the heat radiation design described below. Since the heat generation amount and light distribution characteristics of the chip must change according to the chip type, the design and structure of the luminaire should be adjusted accordingly.

  In one embodiment of the present invention, the illumination unit 100 can be easily replaced and repaired by being detachable from the housing 200. The illumination unit 100 is provided toward the internal space of the housing 200 so that the front surface on which the LEDs are installed covers the opening 220 of the housing 200. For example, the illumination unit 100 may be installed by being inserted into the opening 220 of the housing 200.

  In an embodiment of the present invention, the metal plate 130 to which the substrate 110 is attached is installed to have an acute inclination angle with respect to the ground. Accordingly, the LED 110 mounted on the substrate 110 has a structure inclined with respect to the ground. This can be understood to increase the illuminance in the direction directly below the LED lighting apparatus according to the embodiment of the present invention.

  In an embodiment of the present invention, the metal plate 130 may be manufactured by various methods. The metal plate 130 may desirably be an extruded product manufactured by extrusion molding. When the metal plate 130 is an extrusion molded product and the housing 200 is an injection molded product, the metal plate 130 has a higher thermal conductivity than the housing 200, so that the heat generated in the LED chip is more metal than the housing 200. It can be quickly conducted through the plate 130.

2. Heat Dissipation Part Referring to FIG. 3, a back surface of the illumination unit 100 includes a heat release unit 120 that is exposed to the outside and discharges heat to the outside. As the heat release unit 120, a heat dissipation pin is preferably used. In this case, a plurality of heat dissipation pins 120 protrude from the back surface of the metal plate 130, and the substrate 110 can be fixedly installed on the front surface of the metal plate 130 as shown in FIG. The LED chip 111 is mounted on the substrate 110 as a light source. When heat is generated from the LED chip 111, the heat can be quickly transmitted to the heat dissipation pin 120 through the metal plate 130. As described above, when the thermal conductivity of the metal plate 130 is larger than that of the housing 200, heat transfer to the heat radiating pins 120 can be performed more rapidly. The heat transferred to the heat dissipation pin 120 is easily released to the outside through heat exchange with the external air at the heat dissipation pin 120. The number, shape, and / or position of the radiating pins 120 can be appropriately selected according to desired design specifications and / or client requirements. For example, the heat dissipation pin 120 can be formed horizontally. In addition, as shown in FIG. 3, the heat dissipation pin 120 may be formed in a vertical direction or in an inclined direction. When the heat radiating pins 120 are formed in the vertical direction or at least in a direction inclined with respect to the ground, foreign matters such as dust fall downward due to gravity, so that deterioration of heat radiating characteristics due to the deposition of foreign matters can be prevented. In particular, when the heat dissipation pin 120 is formed in the vertical direction, air convection can be smooth. That is, when the radiating pins 120 are formed in the vertical direction, air exchanged in the space between the radiating pins 120 can smoothly rise without resistance to form convection. Accordingly, the heat radiation pin 120 is preferably formed in a direction inclined with respect to the ground, and more preferably formed in a vertical direction. At least one of the radiating pins 120 may be formed horizontally, or at least one of them may be formed in an inclined direction or vertically.

In some embodiments, the heat dissipation pin 120 and the metal plate 130 may be formed separately and connected to each other in an appropriate manner. In other embodiments, they can be formed in one piece through processes such as extrusion or injection molding. Usually, even if it is the same material, an extrusion molding has still larger heat conductivity than an injection molding. Therefore, it is desirable that the heat dissipation pin 120 and the metal plate 130 be formed as an integral type, and more desirably manufactured by extrusion molding. In this case, the thermal conductivity is high and the heat dissipation effect is large. Further, the metal plate 130 and the heat dissipation pin 120 are preferably made of a material having a higher thermal conductivity than the housing 200 .

3. Housing According to an embodiment of the present invention, the housing 200 includes a bottom surface, a first inclined surface that forms an acute angle with the bottom surface, and a second inclined surface that forms an acute angle with the bottom surface and is coupled to the first inclined surface. An inclined surface is provided. The housing 200 is connected to both ends of the bottom surface, the first inclined surface, and the second inclined surface so that an internal space is formed with the bottom surface, the first inclined surface, and the second inclined surface as a boundary. The opening 220 is provided on the first inclined surface of the housing 200, and the light emitting part 210 is provided on the bottom surface thereof. The angle formed by the bottom surface and the first inclined surface, the angle formed by the first inclined surface and the second inclined surface, and / or the angle formed by the second inclined surface and the bottom surface are: Set to meet desired design specifications and / or client requirements.

  In some embodiments of the present invention, the housing 200 can be formed through processes such as extrusion or injection molding. Desirably, the entire housing 200 is formed by injection molding. This is because the heat conductivity of the housing 200 which is an injection molded product is relatively low, so that the heat generated from the LED 111 is conducted to the power supply unit 300, or conversely, the heat of the power supply unit 300 is directed to the LED 111. This is to reduce conduction.

  In another embodiment of the present invention, it is desirable to use a material having relatively low thermal conductivity in the housing 200 as compared with the metal plate 130 and the heat dissipation pin 120. This is to further reduce heat conduction between the lighting unit 100 and the power supply unit 300 through the housing 200. The first inclined surface provided with the opening 220 so as to be molded without using an insert in the injection mold is formed so as to be inclined with respect to the ground.

  According to the embodiment of the present invention, the heat insulation sealing unit 140 is disposed between the lighting unit 100, particularly the metal plate 130 on which the LED chip is mounted, and the housing 200. The heat insulation sealing part 140 is preferably made of a material having a low thermal conductivity. The heat insulation sealing unit 140 prevents water from flowing into the housing 200 and at the same time blocks heat generated from the LED 111 from being conducted to the housing 200, so that heat generated from the power supply unit 300 is transmitted to the lighting unit 100. It is blocked from being conducted to.

4). Reflector According to one embodiment of the present invention, a reflector 230 can be installed on the inner surface of the housing 200 so as to reflect the light generated from the illumination unit 100 to the light emitter (see FIG. 3).

As shown in FIG. 5, the reflection unit 230 includes a plurality of reflection surfaces 231, and each reflection surface 231 realizes a preset light distribution characteristic when light is emitted through the light emission unit 210. Have different inclination angles (θ ₁ , θ ₂ , θ ₃ ,...), Different curvatures, different areas, or two or more of these. As described above, the light distribution can be efficiently controlled by using the reflecting portion 230 having the plurality of reflecting surfaces 231 having different inclinations. In particular, when a low-power LED chip is used as a light source, that is, when the number of chips is larger and it is more difficult to control the light distribution, a desired light distribution can be easily obtained. As described above, the number of the low-power LED chips 111 and the interval between adjacent chips are adjusted so as to realize a predetermined light distribution characteristic, and the structure and shape of the reflection unit 230 can be appropriately designed. it can. For example, the LED chip can be mounted on the illumination unit 100 so that at least part of the light generated from the LED chip 111 reaches the reflection unit 230. According to an embodiment of the present invention, as shown in FIG. 5, the area of the reflection surface is narrower as it is closer to the illumination unit 100, and the area is wider as it is farther from the illumination unit.

The reflective portion 230 may be formed on the ceiling surface of the inner surface of the housing 200 as shown in FIG. 5, or may be formed on both side surfaces of the housing 200 as shown in FIG. Sometimes. FIG. 6 is a plan perspective view of a lighting fixture according to an embodiment of the present invention. As shown in the figure, the light generated from the LED chip 111 on the substrate 110 is reflected to the side surface and then emitted to the outside through the next light emitting unit 210.

  In addition, the reflection unit 230 is detachably installed on the housing 200, so that it can be easily replaced and repaired, and light distribution characteristics can be freely adjusted.

  Various materials such as aluminum can be used for the reflection unit 230. In addition, various coating methods are used to form the reflective portion 230. For example, a method of depositing silver (Ag) on a PC (Poly Carbonate) and coating or laminating may be used.

5. Light Emitting Part According to an embodiment of the present invention, the light emitting part 210 is provided with a cover 240 that covers the light emitting part 210. The cover 240 prevents an external material such as dust from flowing into the housing 200. Cover 240 can be secured to housing 200 using methods known in the art. The LED lighting apparatus according to an embodiment of the present invention includes a fixing frame 250 that fixes the cover 240. The configuration and operation of the fixed frame 250 will be described in detail later.

6). Power Supply Unit According to an embodiment of the present invention, a power supply unit 300 that supplies power to the illumination unit 100 may be mounted on the outer surface of the housing 200. At least one power supply port 201 is provided on the outer surface of the power supply unit 300 so that power is supplied to the substrate 110. The power supply unit 300 may be detachably mounted, or may be mounted non-detachably. A removable type is more desirable from the viewpoint of replacement or repair. As shown in FIG. 4, since the power supply unit 300 is installed on the top of the housing 200 and the entire outer surface of the power supply unit 300 is exposed to the atmosphere, the LED lighting apparatus according to the embodiment of the present invention is excellent. It can have heat dissipation characteristics. In particular, as shown in FIG. 4, the power supply unit 300 is installed to be inclined with respect to the ground, thereby reducing dust or foreign layers and reducing wind resistance.

  According to an exemplary embodiment of the present invention, the power supply unit 300 includes a fastening protrusion 310 protruding downward (FIG. 4). The fastening protrusion 310 may be mounted on the outer surface of the housing 200 so as to contact the upper surface of the housing 200 with a gap between the power supply unit 300 and the outer surface of the housing 200. Since the power supply unit 300 and the housing 200 are in contact with each other only through the fastening protrusions, the heat conduction between them is reduced. Further, since there is a space between the power supply unit 300 and the housing 200 other than the portion connected through the fastening protrusion, the heat dissipation effect can be enhanced. In another modified embodiment, as shown in FIG. 4, a heat radiating unit 320 is also placed on the outer surface of the power supply unit 300 so that the power supply unit 300 itself radiates heat to the outside. In the heat radiating part 320, a heat radiating pin is preferably used. It is desirable to form the radiating pins so as to be inclined with respect to the ground, and it is more desirable to form them in the vertical direction.

  In another modified embodiment, an antenna 340 that receives a radio signal is attached to the power supply unit 300 so that the power supplied to the substrate 110 can be adjusted by a radio signal from the outside (FIG. 3). ), A controller that controls power supply by a radio signal received through the antenna 340 can be configured.

  The position of the light emitting unit 210, the position of the opening 220, and the position of the outer surface of the housing 200 on which the power supply unit 300 is mounted can be determined according to desired design specifications and / or client requirements. For example, in some embodiments, as shown in FIGS. 3 and 4, the light emitting unit 210 is provided on the bottom surface of the housing 200, and the opening 200 is formed to be inclined upward from one end of the bottom surface. The outer surface on which the power supply unit 300 is mounted can be formed to be inclined upward from the other end of the bottom surface.

7). Fixed Frame FIG. 3 shows a fixed frame 250 applied to an LED lighting apparatus according to an embodiment of the present invention, and FIG. 7 shows that the fixed frame 250 is disassembled.

  As shown in FIG. 7, according to an embodiment of the present invention, the fixed frame 250 has a plurality of divided configurations. That is, the fixed frame 250 forms a fixed frame 250 having an overall window frame shape by connecting a plurality of bent frames 251 and a plurality of linear frames 252 to each other.

  The bending frame 251 is in contact with the vertex of the cover 240 and the peripheral edge of the vertex, and the linear frame 252 is in contact with the edge of the cover 240 between the bending frames 251 (see FIGS. 3 and 7). In addition, the bent frame 251 and the linear frame 252 can be coupled to the periphery of the light emitting unit 210 on the bottom surface of the housing 200 using a coupling mechanism such as a bolt. In particular, the bent frame 251 and the linear frame 252 may be coupled so as to partially overlap each other, and the overlapping portion may include a stepped portion 253 that is upside down so as to mesh with each other.

  With this structure, the bending frame 251 may be coupled to the housing 200 with the cover 240 disposed therebetween, and the linear frame 252 may be coupled to the housing 200. At this time, the stepped portion 253 formed at one end of the linear frame 252 can be brought into contact with the stepped portion 253 of the bent frame 251, and the edge of the linear frame 252 is actually brought into close contact with the bent frame 251 and fixed. it can.

  As described above, the bolt for fixing the both ends of the bending frame 251 and the both ends of the linear frame 252 by fixing the bending frame 251 and the linear frame 252 to each other by the close contact and fixing between the step portions 253. Can be omitted, the assembly process time can be shortened, and the manufacturing cost can be reduced.

  As described above, in the case of the split fixed frame 250, only the length of the linear frame 252 needs to be changed correspondingly even if the size of the lighting fixture is changed. Therefore, the split-type fixed frame 250 has an advantage in that it is not necessary to produce various frames for each model and the manufacturing cost is reduced. In addition, the integrated fixed frame can be twisted during the storage process when manufactured, but the split fixed frame 250 according to an embodiment of the present invention is a split type, and thus there is no possibility of twisting. . In addition, the volume can be easily reduced and stored.

8). Other FIG. 8 is a perspective view of an LED lighting fixture according to another embodiment of the present invention, FIG. 9 is a side view of the LED lighting fixture of FIG. 8, and FIG. 10 is a partially enlarged view of the LED lighting fixture of FIG. It is.

  Referring to FIGS. 8 to 10, an LED lighting device according to another embodiment of the present invention is coupled to the lighting unit 100, and an angle adjustment unit 400 that can tilt and rotate the LED lighting device according to the above-described embodiment. Is further included.

  According to the embodiment of the present invention, the angle adjustment unit 400 is fixed to the first rotation bracket 410 fixed to one side end of the back surface of the lighting unit 100 and the other side end of the back surface of the lighting unit 100. A second rotating bracket 410, a rotating frame 420 having one end rotatably coupled to the first rotating bracket 410 and the other end rotatably coupled to the second rotating bracket; An arm socket portion 430 is detachably coupled to a part of the rotating frame 420 and coupled with a light stem arm (see FIGS. 8 and 9). The arm socket unit 430 can rotate the coupling structure of the illumination unit 100, the housing 200, and the power supply unit 300 according to the coupling angle.

  By rotating the rotation frame 420, the angle at which the light emitted from the LED 111 is reflected through the reflection unit 230 and the angle at which the light is emitted through the light emission unit 210 can be adjusted (see FIG. 9). As shown in FIG. 10, the rotation bracket 410 includes a rotation shaft portion 412 that passes through a part of the rotation frame 420 and is fixed to the side surface of the illumination unit 100 at the center thereof. The rotating bracket 410 includes an arc-shaped through portion 411 centering on the rotating shaft portion 412. Accordingly, the rotation frame 420 can be fixed so as not to be rotated by tightening the fixing bolt 421 coupled to the rotation bracket 410 through the through portion 411 with the rotation angle of the rotation frame 420 appropriately adjusted.

の形状であり、照明部１００と平行した面にはアームソケット部４３０が結合され得る。アームソケット部４３０は、必要によって多様な形状や様子を有するソケット又は締結部材に代替できる。 The rotation bracket 410 has a flat surface.

The arm socket part 430 may be coupled to the surface parallel to the illumination part 100. The arm socket portion 430 can be replaced with a socket or a fastening member having various shapes and appearances as necessary.

  By using the angle adjusting unit 400 having the above-described configuration through the lighting apparatus according to the embodiment of the present invention, the light emission direction can be adjusted regardless of the installation position (FIG. 8). Accordingly, the LED lighting apparatus according to the embodiment of the present invention can be applied to various fields including street lights, ceiling lights, harbor lights, and park lights. That is, the LED lighting apparatus according to an embodiment of the present invention may be installed on a streetlight pole arm, or installed on a wall surface, ceiling, or the like. The LED lighting fixture according to an embodiment of the present invention can be adjusted up and down to achieve an appropriate light distribution. For example, it can be adjusted from -70 degrees to 110 degrees.

  FIG. 11 is an end view of an LED lighting fixture according to an embodiment of the present invention.

  Referring to FIG. 11, in the LED lighting apparatus according to the embodiment of the present invention, the metal plate 130 is inclined with respect to the ground as described above, and the light emitting unit 210 is inclined with respect to the vertical direction by an angle a. Yes. The inclination angle a takes into account the illuminance directly below the light emitting portion 210 as described above, and the range of the inclination angle a can be appropriately adjusted through design specifications such as a predetermined light distribution.

  When the inclination angle a is very small, the amount of light directly emitted from the chip of the LED 111 to the light emitting unit 210 is too small to obtain a desired light distribution. For example, as shown in FIG. 12, when the inclination angle a is 0 degree, most of the emitted light is reflected light through the reflecting part 230, and the direct emitted light from the illumination part is only a part. It is difficult to obtain an appropriate light distribution. On the other hand, if the inclination angle “a” is very large, the amount of light directly emitted to the light emitting unit 210 is too large and it is difficult to obtain a desired light distribution. For example, as shown in FIG. 13, when the inclination angle a is 45 degrees, most of the emitted light is direct light emitted directly to the light emitting unit 210, and the reflected light passing through the reflecting unit 230 is partially Therefore, it is difficult to obtain a desired light distribution. According to one embodiment of the present invention, the tilt angle a is non-limiting and can range from greater than 0 degrees to less than 45 degrees. The limitation on the tilt angle a is that the present invention uses a higher number of LEDs than before due to the use of low-power LEDs, and thereby considers the necessity to control the light distribution is high. .

  According to an embodiment of the present invention, when the height x from the light emitting part 210 to the top of the reflecting part 231 is indicated by a straight line, the distance from the light emitting part 210 to the point where the straight line intersects. The ratio of length y also affects the light distribution characteristics of the present invention (FIG. 11). For example, it can be seen that the luminaire of FIG. 13 has a relatively larger y / x ratio than the luminaire of FIG. The length y and the height x are preferably set so as to realize predetermined light distribution characteristics when light is emitted through the light emitting unit 210. In particular, it is desirable that the length y of the reflecting portion 231 is designed to be more than twice the height x and less than 7 times the height x. Within such a range of the aspect ratio, the light distribution characteristics become more excellent.

  According to a preferred embodiment of the present invention, the luminous flux ratio between the light directly distributed from the light source (direct light) and the light reflected through the reflecting portion (reflected light) is from 4: 6 to 6: 4 can be adjusted.

  FIG. 14 shows a light distribution distribution diagram and a illuminance table just below the lighting fixture according to the embodiment of the present invention. The lighting fixture uses a low-power LED chip of 0.2 watt, power consumption is 300 watt, and the luminous flux ratio of direct light and reflected light is 51.4: 48.6. The light distribution distribution diagram, the direct illuminance table, and the luminous flux ratio between the direct light and the reflected light shown in FIG. 14 are obtained by adjusting the inclination angle a, the ratio of y / x, and the like as described above.

  Another embodiment of the present invention includes an illumination unit including a substrate on which a plurality of low-power LED chips are mounted, a bottom surface, a first inclined surface that forms an acute angle with the bottom surface, and an acute angle with respect to the bottom surface. And a second inclined surface connected to the first inclined surface, and the bottom surface, the first inclined surface, and the second inclined surface as a boundary so that the inner space is formed , A housing in which both ends of the first inclined surface and the second inclined surface are connected, and a reflecting portion installed on the inner surface of the housing so as to reflect the light generated from the illumination portion. At least a part of the illumination unit provides an LED lighting apparatus that is inserted through a part of the first inclined surface so that the low-power LED chip is directed to the internal space of the housing.

  The LED lighting fixture according to the above-described embodiments of the present invention has various advantages. For example, the lighting unit and the power supply unit are each thermally insulated from different structural elements and can individually release (dissipate) heat, preventing heat conduction between the lighting unit and the power supply unit and shortening the service life. Can be prevented. In addition, since the housing is formed of a material having relatively low thermal conductivity through injection molding, heat conduction between the illumination unit and the power supply unit can be prevented. Moreover, the heat insulation sealing part configured to block heat conduction is disposed between the lighting part and the housing, so that heat conduction between the lighting part and the housing (and the power supply part) can be prevented. In addition, since the housing has a deformed frame in which a cover that covers the light emitting surface is fixed, the deformation and damage of the frame can be prevented and productivity can be improved.

  Moreover, the optimized weight and structure manufactured in the form of each piece in which the illumination unit and the power supply unit are separated can be realized. In particular, the housing, the lighting unit, and the power supply unit are manufactured in the form of separate pieces, and productivity can be increased and manufacturing cost can be reduced during mass production.

  In addition, the LED lighting apparatus according to some embodiments may further include an angle adjustment unit that is rotatably coupled to the illumination unit, and an arm socket structure assembled with the rotation bracket of the angle adjustment unit therein or The illumination direction can be maintained regardless of the installation position of the luminaire such as the ground, the ceiling, and the wall while the form is varied. Therefore, the LED lighting apparatus can be applied to various lighting fields and used for various purposes. In addition, the LED lighting apparatus can obtain a desired light distribution even when a low power LED chip is used, can reduce heat generated by the use of the high power LED chip, and can reduce weight and volume. Also, the LED luminaire according to some embodiments is very convenient to operate by controlling the illumination wirelessly.

  The luminaire according to an embodiment of the present invention can be used as high-power illumination of 100 watts or more, particularly as floodlighting. Floodlights illuminate distant places such as vehicles and ships as light fixtures that collect light emitted from a light source and form a beam to illuminate distant places, or are mainly used for illumination of building outer walls, outdoor workplaces, sports facilities, etc. Used for. In particular, since outdoor floodlights are large in scale, resources and power consumption are very large, and it is necessary to minimize the consumption of resources and power. The lighting fixture according to an embodiment of the present invention can obtain desired heat dissipation characteristics and light distribution characteristics with a relatively small size, and can be used more effectively in floodlighting.

  Although the present invention has been described in connection with specific embodiments, the present invention has been described in detail without departing from the scope and spirit of the invention as defined by the appended claims and their equivalents. It will be apparent to those skilled in the art that various changes in the details can be made.

100 Illumination Unit 110 Substrate 111 LED (Chip)
120 Heat Dissipation Portion, Heat Dissipation Pin 130 Metal Plate 140 Heat Insulation Sealing Portion 200 Housing 210 Light Discharge Portion 220 Opening Portion, Insertion Port 230 Reflection Portion 240 Cover 250 Fixed Frame 251 Bending Frame 252 Linear Frame 253 Stepped Section 300 Power Supply Unit 310 Fastening Projection part 320 Heat release part, heat radiation pin 330 Antenna 400 Angle adjustment part 410 Rotating bracket 411 Through part 412 Rotating shaft part 420 Rotating frame 421 Fixing bolt 430 Arm socket part

Claims (29)

An illumination unit that includes a plurality of LEDs as a light source and generates light,
A housing having an opening on one side and a light emitting part for emitting light to the outside on the other side and having an internal space;
A reflection part provided on an inner surface of the housing to reflect light generated from the illumination part to the light emission part;
A heat release part that is provided on the back surface of the illumination part so as to be exposed to the outside and emits heat to the outside.
The illumination unit is installed toward the internal space of the housing so that the front surface covers the opening,
The light emitting unit is installed to emit light generated from the illumination unit or to emit light reflected from the illumination unit through a reflection unit,
The reflective portion is formed on the ceiling surface of the inner surface of the housing, and includes a plurality of reflective surfaces having different areas and mutually different inclination angles ,
Area of the reflecting surface is Ri a wide enough away from the illumination unit,
The angle of inclination between the plurality of reflecting surfaces and the horizontal plane increases as the distance from the illumination unit increases.
The LED luminaire is characterized in that the housing is made of a material having lower thermal conductivity than the power supply unit and the illumination unit .   The LED lighting apparatus according to claim 1, wherein the illumination unit includes a substrate, a plurality of LEDs disposed on the substrate, and a metal plate that supports the substrate.   The LED light fixture according to claim 1, wherein the light source is a low power LED of 0.2 to 0.5 watt.   The low power LED has a narrower spacing than when a high power LED with higher power is used to provide the same output in the same area as when a higher power LED with higher power is used as the light source. The LED lighting apparatus according to claim 3, wherein the LED lighting apparatus is arranged so as to be more distributed.   The LED light fixture according to claim 1, wherein the light source is a chip-on-board (COB) type LED.   The LED lighting apparatus according to claim 2, wherein the metal plate is installed at an angle of 0 to less than 45 degrees with respect to a light emitting portion.   The LED lighting apparatus according to claim 1, wherein the illumination unit is attached to and detached from the housing. The reflective portion is composed of a plurality of reflective surfaces,
Each of the reflecting surface, when the light is emitted through the light emitting unit, LED lighting fixture of claim 1, characterized in that to have a different curvature.   The LED lighting apparatus according to claim 1, wherein the reflection part is installed on both side surfaces of the housing.   The LED lighting apparatus according to claim 1, wherein the reflecting portion is attached to and detached from the housing.   2. The LED lighting apparatus according to claim 1, wherein a light flux ratio between light directly distributed from the light source and light reflected and distributed through the reflection unit is 4: 6 to 6: 4.   When the height (x) from the light emitting portion to the topmost point of the reflecting portion is represented by a straight line, the light emitting portion and the reflection are reflected from a portion where the light emitting portion and the straight line intersect. The length (y) to the part where the part touches is set to be larger than twice the height (x) and smaller than seven times the height (x). The LED lighting apparatus according to 1.   The LED lighting apparatus according to claim 1, wherein the illumination unit is installed by being inserted into the opening. A cover covering the light emitting part;
The LED lighting apparatus according to claim 1, further comprising a fixing frame that fixes the cover to the housing.   The LED lighting device according to claim 14, wherein the fixed frame is divided into a plurality of parts, and both ends of each divided frame are provided with stepped portions that mesh with each other.   The LED lighting apparatus according to claim 1, wherein the housing is an injection molded product.   The LED lighting apparatus according to claim 1, further comprising a heat insulating sealing part between the housing and the lighting part.   The LED lighting apparatus according to claim 1, wherein the heat release unit includes a plurality of heat radiation pins.   The LED lighting device of claim 18, wherein the heat radiation pin is formed to be inclined with respect to the ground.   The LED lighting apparatus according to claim 2, wherein the thermal conductivity of the metal plate and the thermal conductivity of the heat release portion are larger than the thermal conductivity of the housing.   The LED lighting apparatus according to claim 2, wherein the metal plate and the heat-dissipating part are extruded products.   The LED lighting apparatus according to claim 1, further comprising a power supply unit that is mounted on the outer surface of the housing and is detachable, and supplies power to the illumination unit.   The power supply unit includes a fastening protrusion, and the fastening protrusion has a gap between the power supply unit and an outer upper surface of the housing so that the outer surface of the housing is in contact with the upper surface of the housing. The LED lighting apparatus according to claim 22, wherein the LED lighting apparatus is mounted on a side surface.   The LED lighting apparatus according to claim 22, further comprising a heat release unit outside the power supply unit.   23. The LED lighting apparatus according to claim 22, wherein the heat release unit is formed to be inclined with respect to the ground.   The LED lighting apparatus according to claim 1, further comprising an angle adjusting unit that tilts and rotates. The angle adjuster is
A first rotating bracket fixed to one side end of the back surface of the illumination unit;
A second rotating bracket fixed to the other side end of the back surface of the illumination unit;
A rotating frame having one end rotatably coupled to the first rotating bracket and the other end rotatably coupled to the second rotating bracket;
An arm socket part detachably coupled to a part of the rotating frame;
27. The LED lighting apparatus according to claim 26, comprising: An antenna that is mounted outside the power supply unit for supplying power to the illumination unit of the LED lighting apparatus and receives a radio signal so as to adjust the power supplied to the illumination unit;
A controller for controlling power supply by a radio signal received via the antenna;
The LED lighting apparatus according to claim 1, further comprising: An illumination unit including a substrate on which a plurality of low power LED chips are mounted;
A bottom surface, a first inclined surface that forms an acute angle with the bottom surface, and a second inclined surface that forms an acute angle with the bottom surface and is coupled to the first inclined surface, the bottom surface, the first And a housing to which both ends of the bottom surface, the first inclined surface, and the second inclined surface are coupled so that an internal space is formed with the second inclined surface as a boundary,
A reflection part installed on the inner side surface of the housing to reflect light generated from the illumination part, and
At least a part of the illumination unit is inserted through a part of the first inclined surface so that the low-power LED chip faces the internal space of the housing,
The reflecting portion is formed on the ceiling surface of the inner surface of the housing, a plurality of reflecting surfaces having an inclination angle that is different for different areas and cross the area of the reflecting surface Ri of wider away from the illumination unit,
The angle of inclination between the plurality of reflecting surfaces and the horizontal plane increases as the distance from the illumination unit increases.
The LED luminaire is characterized in that the housing is made of a material having lower thermal conductivity than the power supply unit and the illumination unit .

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