KR200453434Y1 - LED light reflector and LED optical module - Google Patents

Abstract

The present invention relates to a light emitting diode (LED) street light, and according to the present invention an LED device for emitting light received from the outside; A plurality of LED elements arranged on an upper surface thereof and mounted thereon, the substrate receiving electricity from the outside and transferring the LED elements to the LED elements; An LED light reflector positioned above the substrate and provided with a reflector to direct light emitted from the LED element in a predetermined direction; And a heat dissipation plate coupled to the substrate and the plurality of LED light reflectors, and configured to receive heat emitted from the LED elements and emit the heat to the outside. A plurality of the LED light reflector is arranged on the heat sink so that the angle formed by the rotationally symmetrical axis of the reflector provided in the LED light reflector from the center of the heat sink toward the line perpendicular to the plane of the heat sink Because of this feature, the area to which light is radiated can be widened, the luminance in the area to which light is radiated is uniform, and the light distribution curve representing the intensity of light traveling in each direction can be optimized, and a uniform natural color can be obtained. The technique to reduce eye fatigue by the production of is disclosed.

LED, street light, light emitting diode, lighting

Description

LED light reflector and LED optical module {LED LIGHT REFLECTOR AND LED LIGHT MODULE FOR LED STREET LIGHT}

The present invention relates to an LED (LED) street light.

In general, street lamps are lighting facilities installed along roads for the safety of road traffic. The street lamps are composed of props in the form of translators on the roads and street lamps installed on the ends of the posts toward the road. The illumination of the road is made.

Existing lamps generally have a short service life, low impact resistance, and emit six ROHS hazardous substances, so they have a long lifespan and do not emit harmful substances, so they are eco-friendly and have high impact resistance. Light emitting diode) is used as the light source.

However, the LED has a problem in that the LED light illuminates only a small area of the road too bright because the LED has a strong straightness due to the light emission characteristic of the LED.

Accordingly, the problem to be solved by the present invention is to broaden the LED light irradiation area to which the LED light is irradiated, the luminance is uniformly displayed in the LED light irradiation area, the optimal distribution curve of luminous intensity The present invention provides an LED light reflector and an LED light module that can be made into a state.

LED light module according to the present invention for achieving the above object is LED device for emitting light by receiving electricity supplied from the outside; A plurality of LED elements arranged on an upper surface thereof and mounted thereon, the substrate receiving electricity from the outside and transferring the LED elements to the LED elements; An LED light reflector positioned above the substrate and provided with a reflector to direct light emitted from the LED element in a predetermined direction; And a heat dissipation plate coupled to the substrate and the plurality of LED light reflectors, and configured to receive heat emitted from the LED elements and emit the heat to the outside. A plurality of the LED light reflector is arranged on the heat sink so that the angle formed by the rotationally symmetrical axis of the reflector provided in the LED light reflector from the center of the heat sink toward the line perpendicular to the plane of the heat sink It features.

LED light reflector according to the present invention for achieving the above object is a steering portion provided with a concave reflector of rotationally symmetrical to reflect the light emitted from the LED element in a direction within a predetermined angle range; And a support part coupled to the steering part and supporting the steering part. The support part may be coupled to an upper surface of a heat sink for supporting a substrate on which an LED element is mounted, and the rotational symmetry axis of the reflector may be coupled to form a predetermined angle with respect to a line perpendicular to the upper surface of the heat sink. It is characterized by.

Here, the height of the support portion and the other side of the support portion is formed different from each other, the support portion is coupled to the upper surface of the substrate or the heat sink while the rotation of the reflector by the height difference between one side and the other side of the support portion Another feature is that the axis of symmetry makes a predetermined angle with respect to the line perpendicular to the upper surface of the heat sink.

LED light reflector according to the present invention for achieving the above object is a steering portion provided with a reflector for reflecting the light emitted from the LED element in a direction within a predetermined angle range; And a support part coupled to the steering part and supporting the steering part. The steering unit is characterized in that the rotationally symmetrical axis of the reflector is formed to form a predetermined angle with respect to the line perpendicular to the upper surface of the heat sink coupled to the substrate on which the LED element is mounted.

Here, the steering portion is formed different from the height of one side and the height of the other side by the inclination of the reflector itself by a predetermined angle so that the rotationally symmetrical axis of the reflector a predetermined angle with respect to the line perpendicular to the upper surface of the heat sink What is achieved is another feature.

LED light reflector and LED light module according to the present invention is because the rotationally symmetrical axis (optical axis) of the reflector of the plurality of LED light reflectors mounted on the LED light module in the form of a buccal salsa wide LED area because the light is irradiated There is an advantage that the luminance and the light distribution in the wide area to which the light emitted from the light is irradiated are even. Therefore, the luminance and the light distribution in the area where the LED light is irradiated is uneven, thereby reducing the fatigue to the human eye.

In addition, since the heat sink side with the heat sink fins is convex, the heat sink fins can be smoothly in contact with the outside air has the advantage that the heat radiation efficiency is increased.

Hereinafter, a preferred embodiment with reference to the accompanying drawings to be described in more detail with respect to the present invention will be described.

1 is a perspective view schematically showing the LED lamp for lighting according to an embodiment of the present invention, Figure 2 is a perspective view schematically showing a lighting unit of the LED lamp for lighting according to an embodiment of the present invention.

Referring to Figure 1 LED lamp for the street lamp 100 according to an embodiment of the present invention comprises a lighting unit 120 and the case unit (110, 111).

The case parts 110 and 111 are provided with an inner space for accommodating the lighting part 120. The case parts 110 and 111 accommodate the lighting unit 120 in the inner space to protect the lighting unit 120 from rain or wind. One side of the case parts 110 and 111 may be fastened with the support (not shown) side of the street lamp to receive support.

As shown in FIG. 1, the case parts 110 and 111 are fastened to the first case 111 and the light unit 120 made of a transparent material so that the light emitted from the light unit 120 may be irradiated to a dark street. There may be a form including a second case 110 for supporting the.

The lighting unit 120 is accommodated in the inner spaces of the case units 110 and 111. The lighting unit 120 may be fastened to the second case 110 to receive the support. Alternatively, as shown in FIG. 2, the mount 112 may be fastened to the mount 112 provided in the second case 110 to receive support.

The lighting unit 120 illuminates using the LED element. That is, the dark place is illuminated by using the light emitted by the LED element supplied with electric energy from the outside.

The lighting unit 120 may have a convex or concave shape or a planar shape in the inner spaces of the case parts 110 and 111. In the embodiment of the present invention will be described as an example the case in which the lighting unit 120 is concave.

When the lighting unit 120 has a concave shape or shape, light emitted from the LED element may be collected in a region where light is irradiated. In this case, even when the LED elements are spaced apart from each other, the lighting unit has a concave shape or shape, so that the light emitted from the LED elements is collected, so that a dark zone in which the luminance decreases in the LED light irradiation region does not appear.

Therefore, since the LED light is collected in the area irradiated, the overall brightness may be uniform and bright illumination may be achieved.

This configuration of the lighting unit 120 will be described in more detail.

The lighting unit may include an LED element, a substrate, a reflector, and a heat sink.

In this case, the lighting unit may include a plurality of heat sinks. That is, as illustrated in FIG. 2 in the embodiment of the present invention, the plurality of heat sinks 240 may be arranged to have a concave shape, such that the lighting unit 120 may have a convex or concave or planar shape.

Alternatively, an embodiment in which the lighting unit has a concave shape is possible by having a heat sink having a single member rather than a plurality of lighting units as the heat sink having a single member has a concave shape.

In the following description, as illustrated in FIG. 2, the lighting unit 120 has a concave shape, and thus the plurality of heat sinks 240 are arranged to have a concave shape.

3 is a perspective view schematically showing an LED optical module according to an embodiment of the present invention.

2 and 3, when the lighting unit 120 includes a plurality of heat sinks 240, for convenience of description, the substrate 220 may be coupled to one heat sink 240 and the heat sink 240 to be supported. The LED elements 210 and the plurality of LED light reflectors 230 may be referred to as one LED light module 200 as shown in FIG. 3.

Therefore, the lighting unit 120 may be viewed as a collective form in which the LED light modules 200 including the LED element 210, the substrate 220, the reflector 230, and one heat sink 240 are arranged to have a concave shape. .

Here, the LED light module 200 may be arranged in a concave shape in various ways. While each of the heat dissipation plates 240 of the plurality of LED optical modules 200 is fastened to the second case 110 (see FIG. 1) or the mount 120, there may be an embodiment in which the LED optical modules 200 are arranged in a concave shape. have.

Alternatively, there may be an embodiment in which the heat dissipation plates 240 of the plurality of LED light modules 200 are fastened to form a predetermined angle with a neighboring heat dissipation plate 240 so that the LED light modules 200 are arranged in a concave shape as a whole. have.

As such, the lighting unit 120 has a concave shape or shape, so that the light emitted from the LED element 210 is collected in the region to which the light is irradiated. Since the lighting unit 120 has a concave shape or a shape even though the LED elements 210 are spaced apart from each other by a predetermined distance, the light emitted from the LED elements 210 is collected, so that the dark region in which the luminance falls within the LED light irradiation area is formed. It will not appear.

Therefore, bright illumination is made to be generally uniform in the area where the LED light is irradiated.

The LED optical module included in the lighting unit will be described.

4 is a cross-sectional view schematically showing an LED optical module according to an embodiment of the present invention.

3 and 4, the LED light module according to the embodiment of the present invention includes an LED element, a substrate, an LED light reflector, and a heat sink.

First, for convenience of description, the side where the substrate and the LED element are positioned on the heat sink is referred to as an upper side in the present specification. And the side opposite to the upper side is called the lower side.

The LED device 210 receives light supplied from the outside and emits light. Since the LED element 210 itself is known a lot, a detailed description thereof will be omitted.

The substrate 220 receives electricity from the outside and transfers the electricity to the LED device 210. A plurality of LED elements 210 are arranged and mounted on the upper surface of the substrate 220. Each of the plurality of LED elements 210 receives electricity from the outside through the substrate 220 to emit light.

The LED light reflector 230 is positioned above the substrate 220. The LED element 210 is positioned inside the LED light reflector 230. The light emitting part of the LED element 210 is exposed to the outside through the LED light reflector 230.

The LED light reflector 230 directs the light emitted from the LED element 210 in a predetermined direction. To this end, the LED light reflector 230 has a reflector. A more detailed description of the LED light reflector 230 will be described later.

The heat sink 240 supports the substrate 220 and the plurality of LED light reflectors 230 coupled to the top of the heat sink 240. And receives the heat emitted from the LED element 210 and discharges to the outside. In order to effectively radiate heat to the outside, it is preferable that the heat dissipation fins 241 are formed on the heat dissipation plate 240. When the heat dissipation fins 241 are formed, the heat dissipation fins 241 may be formed under the heat dissipation plate 240, which is the side opposite to the LED element 210.

When the plurality of heat sinks 240 are arranged such that the side on which the LED element 210 is located is concave, as shown in FIG. 2, the opposite side on which the heat dissipation fins 241 are positioned becomes convex. As such, when the side where the heat dissipation fin 241 is located becomes convex, a gap between the heat dissipation fin and the heat dissipation fin of the neighboring heat sink is opened. If the spacing between the radiating fins is wider, the contact with the external cold air is easier, so the radiating effect can be increased.

A plurality of LED light reflectors 230 are coupled to the upper side of the heat sink 240. And each of the plurality of LED light reflector 230 is provided with a reflector as described above briefly. Here, the central axis on which the reflecting mirror is rotationally symmetrical is referred to as rotation symmetry axis. In other words, the reflecting mirror around the rotational symmetry axis is a form of rotational symmetry like a bowl. And this rotational symmetry axis can be seen as the axis of the reflected light, so it can be regarded as the optical axis of the reflector.

In addition, near the concave vertex of the reflector, a hole (see FIG. 5) may be formed to emit light emitted from the LED element 210. The LED element 210 is positioned in the center of the hole 2313 to FIG. 5 to emit light.

Each of the plurality of LED light reflectors 230 is slightly different in shape depending on the position that is coupled to the heat sink 240, that is, the position corresponding to the respective LED elements 210. In other words, angles θ1 and θ2 of the rotationally symmetrical axes (optical axes) L1, L2, and L3 of the reflecting mirrors provided in each of the plurality of LED light reflectors 230 are formed with a line SL perpendicular to the upper surface of the heat sink 240. , θ3) are different.

As shown in FIG. 4, the seven LED light reflectors 230 are arranged in one row so as to be symmetrically disposed from the left and right sides of the first LED light reflector 2301 at the center of the heat sink 240. Here, as the rotationally symmetrical axes (optical axes) L1, L2, and L3 of the reflectors provided in each of the plurality of LED light reflectors 230 are located farther from the center of the heat sink 240, lines perpendicular to the upper surface of the heat sink are exposed. ) And the rotationally symmetric axis (optical axis) L1, L2, L3 of the reflecting mirror are arranged so as to become gradually larger.

The rotational symmetry axis of the reflector provided in the first LED light reflector 2301 positioned in the center of the heat sink 240 is parallel to the line SL perpendicular to the upper surface of the heat sink. However, the rotationally symmetrical axis L1 of the reflector provided in the second LED light reflector 2302 adjacent to the first LED light reflector 2301 is not parallel to the line SL perpendicular to the upper surface of the heat sink 240. That is, the line SL perpendicular to the upper surface of the heat sink and the rotational symmetry axis form a predetermined angle θ1.

The third LED light reflector 2303 is positioned next to the second LED light reflector 2302 and is further located from the center of the heat sink 240, and is coupled to the heat sink 240. The rotationally symmetrical axis (optical axis) L2 of the reflector provided in the third LED light reflector 2303 forms a predetermined angle θ2 with a line SL perpendicular to the upper surface of the heat sink 240. Here, the third LED light reflector is formed such that θ2> θ1.

The fourth LED light reflector 2304 is positioned next to the third LED light reflector 2303, and is located at a further distance from the center of the heat sink 240, and is coupled to the heat sink 240. The rotationally symmetrical axis (optical axis) L3 of the reflector provided in the fourth LED light reflector 2304 forms a predetermined angle θ3 with respect to the line SL perpendicular to the upper surface of the heat sink 240. The fourth LED light reflector 2304 is formed such that θ3> θ2.

As described above, the plurality of LED light reflectors 230 are sequentially arranged such that θ1 <θ2 <θ3 with respect to the center of the heat sink 240. In other words, the optical axes L1, L2, and L3 of the LED light reflectors 230 are arranged like buchasal. Therefore, the area irradiated with light emitted from the LED element 210 becomes large.

Next, the LED light reflector included in the LED light module or the LED street lamp described above will be described.

5 is a plan view schematically showing the LED light reflector according to an embodiment of the present invention from the top down to a lower side, Figure 6 is a side cross-sectional view schematically showing a side cross-section of the LED light reflector according to an embodiment of the present invention to be.

4 to 6, the LED light reflector according to the embodiment of the present invention includes a steering part and a support part.

The steering unit 2310 is for reflecting the LED light to a specific direction side, the steering unit 2310 is provided with a concave reflector 2315 which is rotationally symmetrical to reflect the light emitted from the LED element in a direction within a predetermined angle range It is.

That is, the concave shape of the reflector 2315 is a rotationally symmetrical shape with respect to the center central axis, such as a concave spherical surface or a concave elliptical surface. As described above, the rotational symmetry center axis that is the center of the rotational symmetry may be referred to as the optical axis of the reflector 2315.

Near the concave vertex of the reflector 2315, a hole 2313 through which light emitted from the LED element 210 may come out is formed. The LED element 210 is positioned in the center of the hole 2313 to emit light. Light emitted from the LED element 210 is reflected by the reflector 2315 of the steering unit 2310 and reflected in a direction within a predetermined angle range.

The support part 2320 supports the steering part 2310, and a steering part 2310 is coupled to an upper side of the support part 2320. The support part 2320 is coupled to form predetermined angles θ1, θ2, and θ3 with respect to the line SL perpendicular to the upper surface of the heat sink. That is, the rotationally symmetrical axes (optical axes) L1, L2, and L3 of the reflecting mirror 2315 provided in the steering unit 2310 are coupled to the heat sink 240 to a line SL perpendicular to the upper surface of the heat sink 240. It is coupled to have a predetermined angle (θ1, θ2, θ3) with respect to. Here, the line SL perpendicular to the upper surface of the heat sink 240 and the rotational symmetry axis (optical axis) are imaginary lines, which are introduced to explain the LED light reflector 230 according to the embodiment of the present invention.

As shown in FIG. 6, the support part 2320 has a predetermined angle θ with respect to the line SL whose rotationally symmetrical axis of the reflecting mirror 2315 provided in the steering part 2310 is perpendicular to the upper surface of the heat sink 240. One side and the other side (d1, d2) may be formed differently to achieve.

That is, since the height (d1) of one side and the height (d2) of the other side of the support 2320 is formed differently, a height difference is generated between the one side and the other side, the height when the LED light reflector 230 is closely coupled to the heat sink 240 The LED light reflector is coupled to be inclined by a predetermined angle θ toward one side of which is lower.

Here, a part 2321 of the lower part of the support part 2320 is fastened by a fastening means such as a bolt while contacting the upper surface of the heat sink 240, and the remaining part 2322 of the bottom of the support part 2320 is an upper surface of the heat sink 240. With respect to the predetermined angle (θ) is excited (open). As a result, the rotationally symmetrical axis (optical axis) of the reflector 2315 provided in the steering unit 2310 is tilted to one side at a predetermined angle θ with respect to the line SL perpendicular to the upper surface of the heat sink.

Of course, as shown in FIG. 6, only a part of the lower portion 2321 of the support 2320 is in contact with the upper surface of the heat sink 240. That is, when the lower side of the support part 2320 is obliquely inclined from the other side to one side, the lower part of the support part 2320 is in contact with the heat sink 240.

Therefore, the light emitted from the LED element 210 can be reflected by turning in one direction by a predetermined angle θ.

As described above, the predetermined angle θ corresponds to a position at which the LED light reflector 230 is coupled to the heat sink 240, that is, the LED element 210 at a certain position so that the LED light reflector 230 is positioned. Depending on whether or not the predetermined angle (θ) value is determined.

Meanwhile, although the surface of the reflector 2315 provided in the steering unit 2310 may be deposited with aluminum, the surface of the reflector is vacuum-deposited with chromium in order to further improve the reflection efficiency of the light emitted from the LED element 210. Is preferred.

Reference numeral 2325 not described in FIG. 5 is a fastening groove provided to fasten the LED light reflector 230 to the heat dissipation plate 240, and a fastening means such as a bolt is inserted into the heat dissipation plate 240 through the groove. The light reflector 230 is fastened to the heat sink 240.

Next, another embodiment of the LED light reflector according to the present invention will be described.

7 is a perspective view schematically showing an LED light reflector according to another embodiment of the present invention.

Referring to FIG. 7, the LED light reflector 300 according to another embodiment of the present invention includes a steering part 310 and a support part 320.

The steering unit 310 includes a reflector 315 for reflecting light emitted from the LED element in a direction within a predetermined angle range.

Here, the reflector 315 is a concave shape, such as a concave spherical surface or a concave elliptical surface, which is rotationally symmetrical with respect to the center central axis. As described above, the rotational symmetry axis serving as the center of the rotational symmetry may be referred to as the optical axis of the reflecting mirror. Light emitted from the LED element is reflected by the reflector 315 of the steering unit 310 and reflected in a direction within a predetermined angle range. Near the concave apex of the reflector 315, a hole 311 through which light emitted from the LED element may be formed is formed. The LED element is positioned in the center of the hole 311 to emit light.

The steering unit 310 is formed such that the rotationally symmetrical axis of the reflector 315 forms a predetermined angle with respect to the line SL perpendicular to the upper surface of the heat sink.

As an example, as shown in FIG. 7, the rotationally symmetrical axis L10 of the reflector 315 may be inclined to one side at a predetermined angle θ with respect to the line SL perpendicular to the upper surface of the heat sink. It can be seen that the height h1 and the height h2 of the other side are formed differently.

Since the height h1 of one side of the steering unit and the height h2 of the other side are different, the reflector 315 itself is inclined to one side by a predetermined angle θ. Since the reflector 315 itself is inclined by a predetermined angle θ, the rotational symmetry axis L10 of the reflector 315 is also inclined to one side by the predetermined angle θ.

Therefore, the range in which the light emitted from the LED element is reflected is moved to one side by a predetermined angle θ.

On the other hand, the surface of the reflector 315 provided in the steering unit 310 may be deposited with aluminum, but it is preferable that the reflective surface is vacuum-deposited with chromium in order to further improve the reflection efficiency for the light emitted from the LED element. .

The steering part 310 is coupled to the upper side of the support part 320, and the support part 320 supports the steering part 310. The support part 320 is provided with a fastening means for fastening the support part 320 to the heat sink by being fitted into a fastening groove (not shown) formed on the upper surface of the heat sink.

In this case, the fixing rib 325 having the locking step 326 as the fastening means is preferable. Since the fixing rib 325 is provided in the support part 320, when the LED light reflector 300 is simply inserted into the heat sink, the locking jaw 326 of the fixing rib 325 is inserted into the fastening groove formed in the heat sink and is caught by the LED light reflector. 300 is fastened to the heat sink. Therefore, manufacturing efficiency is improved.

As described above, the LED light module to which the LED light reflector 300 is applied according to another embodiment of the present invention will be described.

8 is a cross-sectional view schematically showing a cross section of the LED light module including the LED light reflector according to another embodiment of the present invention.

The substrate 420 and the LED element 410 in the LED optical module according to another embodiment of the present invention are the substrate (see 220 FIG. 4) and the LED element 210 in FIG. 4 described above with reference to FIG. 4. Note that detailed description will be omitted. However, the LED light reflector 300 and the heat sink 440 will be described with reference to FIGS. 7 and 8.

In the LED light module 400 to which the LED light reflector 300 according to another embodiment of the present invention is applied, the heat sink 440 is fastened to the fixing rib 325 provided in the support 320 of the LED light reflector 300 is inserted. Grooves (not shown) are formed. The plurality of LED light reflectors 300 are fastened to correspond to the LED elements 410 according to the positions of the fastening grooves of the LED element 410 and the heat sink 440, respectively. The LED light reflector 300 and the heat sink 440 are fixedly fastened by inserting the fixing rib 325 of the LED light reflector 300 into the fastening groove. Therefore, the efficiency of the operation of coupling each of the plurality of LED light reflectors 300 to the heat sink 440 is improved.

8 illustrates an LED light module 400 in which seven LED light reflectors 300 are arranged in one row on the heat sink 440.

The first LED light reflector 3001 positioned in the center of the heat sink 440 is parallel to the line SL perpendicular to the upper surface of the heat sink 440. That is, the angle between the rotationally symmetric axis of the reflector and the line SL perpendicular to the upper surface of the heat sink 440 is 0 degrees. Six LED light reflectors 300 are coupled to the heat sink 400 in correspondence with each of the LED elements 410 so that both sides thereof are symmetrically based on the LED elements (or LED light reflectors) positioned at the center of the heat sink 440. It is.

The rotationally symmetrical axis (optical axis) L11 of the reflector of the second LED light reflector 3002 adjacent to the first LED light reflector 3001 has a predetermined angle with a line SL perpendicular to the upper surface of the heat sink 440. Achieve. Here, the second LED light reflector 3002 positioned on the right side and the second LED light reflector 3002 positioned on the left side of the first LED light reflector 3001 are the same.

However, in the second LED light reflector 3002 positioned on the right side, the rotational symmetry axis L11 of the reflector is inclined to the right by a predetermined angle θ11 with respect to the line SL perpendicular to the upper surface of the heat sink 440. In the second LED light reflector 3002 positioned on the left side, the rotationally symmetrical axis L11 of the reflector is inclined to the left by a predetermined angle θ11 with respect to the line SL perpendicular to the upper surface of the heat sink 440. Therefore, the left and right sides of the LED optical module 400 are symmetrical with respect to the LED element 410 positioned in the center of the heat sink 440.

The third LED light reflector 3003 is located next to the second LED light reflector 3002. The rotationally symmetrical axis L12 of the reflector of the third LED light reflector 3003 also forms an angle with respect to the line SL perpendicular to the upper surface of the heat sink 440. Here, the angle value is larger than that of the second LED light reflector 3002. That is, the size of the angle θ12 formed by the rotationally symmetrical axis L12 of the reflector of the third LED light reflector 3003 and the line SL perpendicular to the upper surface of the heat sink 440 is the second LED light reflector 3002. The case of the third LED reflector 3003 is larger than that of.

Similarly, the angle θ13 formed by the rotationally symmetrical axis L13 of the reflector of the fourth LED reflector 3004 positioned next to the third LED reflector 3003 and a line SL perpendicular to the upper surface of the heat sink 440. The size is larger than that of the third LED reflector 3003.

As described above, the angle of the rotational symmetry axis of the reflecting mirror and the line SL perpendicular to the upper surface of the heat sink increases in one direction from the center of the heat sink 440 to one side, such as an ordered sequence or an equivalent sequence. That is, they are sequentially arranged such that θ11 <θ12 <θ13 with respect to the center of the heat sink 440.

In addition, the size of the angle formed by the rotationally symmetric axis of the reflecting mirror and the line SL perpendicular to the upper surface of the heat sink increases in the other direction from the center of the heat sink 440 to the other side, as well as an ordered sequence or an equivalent sequence.

Therefore, the optical axes of each LED light reflector are arranged like Buchatsal. Therefore, the area of the area where the LED light is irradiated becomes large.

In addition, when the plurality of heat sinks 440 are arranged such that the side where the LED element 410 is located is concave, as shown in FIG. 2, the opposite side where the heat sink fins 441 provided on the heat sink 440 is positioned is convex. . As such, when the side where the heat dissipation fin 441 is located becomes convex, a gap between the heat dissipation fin and the heat dissipation fin of the neighboring heat sink is opened. If the gap between the radiating fins is increased, the contact with the external cold air is easier, so the heat dissipation effect is increased.

As described above, the LED light module including the LED light reflector according to the present invention is gradually moved toward one side or the other side toward the one or the other side with respect to the center of the LED light module to reflect the light emitted from the LED element. As a result, the light emitted from the LED element can be widened.

In addition, a large number of such LED light modules are included in the lighting unit, and the array of the plurality of LED light modules has a concave shape or shape, so that the lighting unit has a concave shape. Therefore, the light emitted from the LED element is collected in the area where the light is irradiated. Here, even though the LED elements are spaced apart from each other by a predetermined distance, since the lighting unit has a concave shape or shape, the light emitted from the LED elements is collected so that the luminance does not fall in the LED light irradiation area.

As described above, the LED light reflector and the LED light module according to the present invention distribute the rotationally symmetric axes (optical axes) of the reflectors of the plurality of LED light reflectors mounted on the LED light module in the form of a buccal, so that the LED is generally illuminated. There is an advantage that the luminance is uniform in a wide area where the light emitted from the devices is irradiated. Therefore, the luminance in the area where the LED light is irradiated is uneven, thereby reducing the fatigue to the human eye.

In addition, the heat sink side with the heat sink fins is convex, so that the heat sink fins can be in contact with the outside air smoothly, the heat radiation efficiency is increased.

As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings, but since the above embodiments have been described by way of example only for the present invention, the present invention has been described above. It should not be understood to be limited only to the embodiments, and the scope of the present invention will be understood by the claims and equivalent concepts described below.

1 is a perspective view schematically showing a lamp for an LED street lamp according to an embodiment of the present invention.

Figure 2 is a perspective view schematically showing a lighting unit of the LED lamp for lighting according to an embodiment of the present invention.

3 is a perspective view schematically showing an LED optical module according to an embodiment of the present invention.

4 is a cross-sectional view schematically showing an LED optical module according to an embodiment of the present invention.

5 is a plan view schematically showing a state of looking down the LED light reflector according to an embodiment of the present invention from the upper side to the lower side.

6 is a side cross-sectional view schematically showing a side cross-section of the LED light reflector according to an embodiment of the present invention.

7 is a perspective view schematically showing an LED light reflector according to another embodiment of the present invention.

8 is a cross-sectional view schematically showing a cross section of the LED light module including the LED light reflector according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110,111: case part 120: lighting part

200: LED optical module 210: LED element

220: substrate 230: LED light reflector

240: heat sink

Claims (5)

LED device for emitting light by receiving electricity supplied from the outside; A plurality of LED elements arranged on an upper surface thereof and mounted thereon, the substrate receiving electricity from the outside and transferring the LED elements to the LED elements; An LED light reflector positioned above the substrate and provided with a concave reflector that is rotationally symmetrical to reflect light emitted from the LED element in a direction within a predetermined angle range; And A heat dissipation plate coupled to the substrate and a plurality of the LED light reflectors, and configured to receive heat emitted from the LED elements and emit the heat to the outside; Including, Many of the LED light reflector is The rotationally symmetrical axis of the reflector provided in the LED light reflector is arranged in the heat sink so that the angle formed with respect to the line perpendicular to the surface of the heat sink becomes larger toward the end from the center of the heat sink, A steering unit provided with the reflector; And A support part coupled to the steering part and supporting the steering part; Including; The support portion It is coupled to the upper surface of the heat sink for supporting the substrate on which the LED element is mounted, The height of one side and the other side of the support is formed differently, The support is coupled to the upper surface of the substrate or the heat sink and the rotationally symmetrical axis of the reflector is a predetermined angle with respect to the line perpendicular to the upper surface of the heat sink by the height difference between one side and the other side of the support. doing LED optical module. A steering portion provided with a concave reflector that is rotationally symmetric to reflect light emitted from the LED element in a direction within a predetermined angle range; And A support part coupled to the steering part and supporting the steering part; Including; The support portion It is coupled to the upper surface of the heat sink for supporting the substrate on which the LED element is mounted, The height of one side and the other side of the support is formed differently, The support is coupled to the upper surface of the substrate or the heat sink and the rotationally symmetrical axis of the reflector is a predetermined angle with respect to the line perpendicular to the upper surface of the heat sink by the height difference between one side and the other side of the support. doing LED light reflector. delete A steering unit having a reflector for reflecting light emitted from the LED element in a direction within a predetermined angle range; And A support part coupled to the steering part and supporting the steering part; Including; The steering unit Since the height of one side and the height of the other side are different from each other and the reflector itself is inclined by a predetermined angle, the rotationally symmetrical axis of the reflector is perpendicular to the upper surface of the heat sink coupled to the substrate on which the LED element is mounted. Characterized in that to achieve a predetermined angle LED light reflector. delete

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