KR101217063B1 - Led lighting apparatus - Google Patents

Abstract

PURPOSE: An LED(light emitting diode) lighting apparatus is provided to install a streetlight in a wide gap by installing a spread lenses at a pillar. CONSTITUTION: A circuit board(4) of a flat pattern is installed in a housing(3). A plurality of LED lamps(7) is installed on the circuit board and emits light. A spread lenses(5) is installed outside the LED lamps. The spread lenses spreads light emitted from the LED lamps for forming a light distribution surface of a round shape including a long shaft and a short shaft. The long shaft of the light distribution surface in the spread lenses is differently formed. An angle between a long shaft direction of the light distribution shaft and a road direction is formed under the set angle.

Description

LED lighting apparatus {LED lighting apparatus}

The present invention relates to an LED lighting device installed on a street light of the road side, in detail, the light emitted from the LED lamps are installed in front of each of the LED lamps to form an oval shape having a light distribution surface having a long axis and a short axis. The present invention relates to an LED lighting apparatus for efficiently increasing a total bacterium by reducing dark zones of an illumination area by installing diffusion lenses for diffusing light into one of a plurality of groups having the same long axis direction of the light distribution surface.

Light Emitting Diode (LED) is a semiconductor device that converts electrical energy into light energy, and is a next-generation lighting source due to its advantages such as low power consumption, high brightness, long life and excellent impact resistance compared to light sources such as incandescent, fluorescent and sodium. Is in the spotlight.

In general, a luminaire is a lighting fixture that is installed on sidewalks and roadways to increase visibility of drivers and pedestrians at night and allow vehicles and pedestrians to pass safely.

1 is an exemplary view for explaining a conventional LED lighting fixture.

As shown in FIG. 1, the LED luminaire 100 (hereinafter, referred to as a conventional LED luminaire) illuminates the road 101 so that a vehicle driving the road 101 may safely drive.

In addition, the conventional LED luminaire 100 has the advantage of excellent lighting efficiency due to the characteristics of the LED to emit light of high brightness.

However, since the LED has excellent light straightness but low diffusion property, when the light distribution surface 110 of the light emitted from the conventional LED luminaire 100 is examined, light of high brightness is emitted to the central region 111 of the light distribution surface. However, the luminance sharply decreases toward the peripheral regions 112, 113, and 114.

In addition, the conventional LED luminaire 100 emits light only in the narrow region 110 because the light is not diffused, the lighting efficiency is reduced. Accordingly, a dark zone in which no light is emitted is formed between adjacent luminaires 100 and 100 '. In this case, the dark zone increases the fatigue of the driver's eyes and causes an accident because it obstructs vision. That is, the conventional LED lamp 100 has a sharp increase in the dark zone area when installed on the road and sidewalk, and the manufacturing and installation costs increase because the lamps are installed at a narrow interval to overcome this problem.

In addition, in the national standard (KS), technical standards such as road average brightness and overall uniformity are set so as not to disturb the driver's driving and driving safety, but the conventional LED street light 100 of FIG. 1 is presented in the national standard (KS). It does not satisfy the comprehensive bacterial system.

In order to overcome this problem, various studies have been conducted to improve the overall bacterium by inclining the substrate on which the LED module is mounted, installing a diffusion plate and a lens on the front of the LED module, or diffusing light using a reflector. It's going on.

However, since the LED luminaire formed to be inclined to the circuit board requires a large amount of LED lamps according to the inclination of the circuit board, the manufacturing cost increases, and the manufacturing of the housing and the circuit board is cumbersome.

In addition, LED luminaires that diffuse light using a reflector have a problem in that production efficiency decreases because a precise reflector structure design must be accompanied to satisfy the required light distribution surface, and manufacturing cost increases because a reflector must be purchased and installed separately. Is generated.

FIG. 2 is a perspective view illustrating a diffusion lens disclosed in Korean Patent No. 10-0890270 (name: a lighting device for a street lamp having a diffusion lens), and FIG. 3 is light distribution when light is diffused through the diffusion lens of FIG. It is an exemplary figure which shows a surface.

The diffusion lens 200 of FIG. 2 is a lens for diffusing light emitted from the LED lamps by being installed on a circuit board as if surrounding the outer surfaces of the LED lamps, the lens unit 201 formed on the upper side, and a circuit formed on the lower side. It is composed of a pair of fixing parts 203 and 203 'coupled to the substrate, and an LED lamp (not shown) is installed inside the diffusion lens 200.

In addition, the lens unit 201 is formed in a pair of peaks having a curved shape so that the light distribution surface can diffuse the light source as wide as possible to the outside (front and rear direction) so as to form an elliptical shape having a long axis and a short axis. At this time, the lens unit 201 passes through the peak shape of the light emitted from the LED lamp installed therein, respectively, as compared to the light distribution surface 110 when not passing through the lens unit 201 as shown in FIG. 3. More than twice the light distribution surface 210 is formed. In this case, the light distribution surface 220 represents a light distribution surface of an adjacent LED street light.

That is, since the diffusion lens 201 diffuses the light in an elliptical shape as shown in FIG. 3, the light distribution surface of the conventional LED luminaire 100 of FIG. 1 does not form a long axis, thereby partially solving the problem that the luminaires should be narrowly installed. have.

However, when looking at the light distribution surfaces 210 and 220 of the diffusion lens 200, the overall uniformity of the light distribution surface 110 is rapidly increased compared to the light distribution surface 110 of the conventional LED lighting device 100, and the light distribution surface is formed in an elliptical shape. Therefore, it can be seen that dark zones 211 and 221 are formed in the corner region.

In other words, the LED luminaire using the diffusion lens 200 has an advantage that the overall bacterial system is partially increased compared to the conventional LED luminaire 100, but it still does not reach the comprehensive bacterial system required by the Korean standard (KS). There is a limit to being installed in India.

The present invention is to solve this problem, the problem of the present invention is diffused lenses for diffusing light so that the light distribution surface is formed in an elliptical shape with a long axis and a short axis is installed on the front of each of the LED lamps, but the diffuse lenses It is to provide an LED lighting device that is installed on the circuit board so as to be included in one of a plurality of groups in which the direction of the long axis of the plane is matched to reduce the dark zone of the preset lighting area to efficiently increase the overall balance.

In addition, another object of the present invention is to provide an LED lighting device that can be installed by the diffusion lenses are installed on the circuit board so that the direction of the long axis of the light distribution surface toward the installation direction of the street lamp posts to reduce the installation cost by widening the distance between the street lights It is to.

In addition, another object of the present invention is to provide a LED illumination device in which the light distribution surface is formed in the same size and shape symmetrically in the center by configuring the diffuser lenses having the same long axis direction of the light distribution surface symmetrically in the center of the circuit board It is to provide.

In addition, another problem of the present invention is to provide an LED lighting device in which the groups are configured such that the quantity of the diffusing lenses included in each group has the same quantity so that light is not concentrated in a specific area.

According to an aspect of the present invention, there is provided an LED lighting apparatus mounted to a street lamp installed along a road direction, the circuit board having a flat plate shape installed inside the housing; A plurality of LED lamps installed on the circuit board to emit light; Installed on an outer side of each of the LED lamps, and including diffusion lenses for diffusing light emitted from the LED lamps so that the light distribution surface forms an elliptical shape having a long axis and a short axis, wherein the diffusion lenses are long axes of the light distribution surface. Are formed in different directions, but are installed on the circuit board such that the absolute value of the angle between the long axis direction of the light distribution surface and the road direction is less than or equal to a predetermined angle.

In addition, another solution of the present invention is to provide a LED lighting device mounted on a street lamp installed along the road direction: a housing; A circuit board having a flat plate shape installed inside the housing; A plurality of LED lamps installed on the circuit board to emit light; Installed on an outer side of each of the LED lamps, and including diffusion lenses for diffusing light emitted from the LED lamps so that the light distribution surface forms an elliptical shape having a long axis and a short axis, wherein the diffusion lenses are long axes of the light distribution surface. when comprise diffusion lens to a direction consistent with a group contained in any one of a plurality of groups, the absolute value of the angle between the groups of each of the light distribution major axis direction and the road direction of the surface is a predetermined angle or less will be.

Further, in the present invention, it is preferable that diffusion lenses having the same long axis direction of the light distribution surface are provided in a symmetrical center of the circuit board.

In addition, in the present invention, it is preferable that the quantity of the diffusing lenses included in the groups is the same.

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Further, in the present invention, the diffusion lenses are inclined from the reference direction, which is the direction of the long axis when the direction of the long axis of the light distribution surface is the direction of the long axis, to the size of one of -15 ° to 15 °. It is preferable to install.

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According to the present invention having the above-mentioned problems and solving means, diffused lenses for diffusing the light emitted from the LED lamps to form an elliptical shape having a long axis and a short axis are included in one of a plurality of groups having the same long axis direction of the light distribution surface. By configuring so as to reduce the dark zone area in which no light is emitted within the preset lighting area to increase the overall bacteria system.

In addition, according to the present invention, the diffusion lens is installed so that the direction of the long axis of the light distribution surface is toward the installation direction of the struts, so that the street lamps can be installed at wide intervals, thereby reducing the installation cost.

In addition, according to the present invention, by simply changing the installation method of the known diffusion lens without using the structural deformation or the reflection plate of the housing and the circuit board, it is possible to create an excellent cost-effective effect such as removing the dark zone and increasing the overall system.

1 is an exemplary view for explaining a conventional LED lighting fixture.
FIG. 2 is a perspective view illustrating a diffusion lens disclosed in Korean Patent No. 10-0890270 (name: a lighting device for a street lamp having a diffusion lens).
3 is an exemplary diagram illustrating a light distribution surface when light is diffused through the diffusion lens of FIG. 2.
Figure 4 is a plan view showing an LED lighting apparatus of an embodiment of the present invention.
FIG. 5 is a photograph showing an LED lighting device of FIG. 4.
6A is a plan view of the light distribution surface of the diffuse lens of FIG. 4 when the direction of the long axis is the reference direction, and FIG. 6B is an angle of 15 ° from the reference direction of the diffuse lens of FIG. It is a top view which shows the light distribution surface when it installs inclined by.
FIG. 7 is a plan view illustrating a light distribution surface when the diffusion lens of FIG. 4 is installed to be inclined at a magnitude of 15 ° or more from a reference direction.
8 is a plan view showing a light distribution surface of the LED lighting apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described.

4 is a plan view illustrating an LED lighting apparatus according to an embodiment of the present invention, and FIG. 5 is a photograph showing the LED lighting apparatus of FIG. 4.

The LED lighting device 1 of FIG. 4 includes a housing 3 having a circular opening groove 31 formed on a front surface thereof, and a circuit board on which a circuit is printed and inserted into the opening groove 31 of the housing 3. 4) and a plurality of LED lamps 7 installed in each of the installation grooves (not shown) of the circuit board 4, and are installed to surround each of the LED lamps 7 from the LED lamps 7; It consists of a plurality of diffusion lenses 5 for diffusing the emitted light. At this time, the LED lighting device 1 preferably further includes a cover (not shown) installed on the front of the housing 3, the cover prevents water and foreign matter from entering.

In addition, the LED lighting device (1) is installed on the top of the strut (not shown) installed vertically from the ground to emit light to a predetermined illumination area at a minimum of 12M height.

The housing 3 has an accommodating space in which a power supply device (not shown) for generating power and wirings for power gaps are installed, and a circular opening groove 31 having a circuit board 4 seated thereon. Is formed. In this case, for convenience of description, the opening groove 31 of the housing 3 has been described as an example, for example, but the shape of the housing 3 is not limited thereto, and may be configured in various shapes. .

The circuit board 4 is a board having a circuit printed therein, preferably a PCB board.

In addition, although the circuit board 4 is not shown in the drawing, a plurality of installation grooves in which the LED lamps 7 are seated therein is formed to be spaced apart.

The LED lamps 7 are semiconductor devices that convert power energy into light energy, and are installed in each of the installation grooves of the circuit board 4. At this time, the LED lamps 7 form a spherical light distribution surface as is known.

The diffusion lenses 5 are installed outside each of the LED lamps 7 to diffuse the light emitted from the LED lamps 7, in particular, the light distribution surface has a long axis and a short axis like the diffusion lens 200 of FIG. 2 described above. The light emitted from the LED lamps 7 to diffuse to form an elliptical shape having.

In this case, the diffusion lenses 5 are installed on the circuit board such that the long axis of the light distribution surface faces the direction in which the posts are installed.

In addition, in FIG. 4, the diffusion lens 5 has a rectangular shape, but the shape of the diffusion lens 5 is not limited thereto. At this time, since the diffusion lens 5 is a known technique and a device already released as a product, a detailed description of the method and structure for diffusing light into an elliptical shape will be omitted.

In addition, each of the diffusion lenses 5 forms a light distribution surface having the same shape and size when the light efficiency of the LED lamp 7 accommodated therein is the same.

6A is a plan view of the light distribution surface of the diffuse lens of FIG. 4 when the direction of the long axis is the reference direction, and FIG. 6B is an angle of 15 ° from the reference direction of the diffuse lens of FIG. FIG. 7 is a plan view illustrating a light distribution surface when the diffuser lens of FIG. 4 is installed to be inclined at a magnitude of 15 ° or more from the reference direction in the diffuse lens of FIG. 4.

The diffusion lenses 5 diffuse the light of the LED lamps 7 to form an elliptical light distribution surface having a long axis and a short axis. Hereinafter, as shown in FIG. 6A, when the direction of the long axis of the light distribution surface coincides with the road direction, the direction of the long axis is referred to as a reference direction.

)로 기울어지게 회로기판(4)에 설치되면, 확산렌즈(5)의 배광면(B) 또한 기준방향으로부터 특정 각도(

)로 기울어지게 형성된다.Also, as shown in (b) of FIG. 6, if the diffusion lens 5 is more specific than the diffusion lens (hereinafter referred to as reference direction diffusion lens) 5 'in which the long axis direction of the light distribution surface forms the reference direction. Angle(

When installed on the circuit board 4 so as to be inclined to the light distribution surface, the light distribution surface B of the diffusion lens 5 also has a specific angle (

It is formed to be inclined to).

)로 기울어진 배광면(B)은 기준방향 배광면(A)에서 형성되는 일측 대향되는 모서리 영역의 다크존(D)을 일부분 제거한 다크존(D1)을 형성하게 된다.In addition, as the light distribution surface B is inclined, the dark zone D1 of the diffusion lens 5 and the dark zone D of the reference direction diffusion lens 5 'are also changed. That is, the light distribution surface A in the reference direction forms a dark zone D at the corners of the entire illumination area S, but at a specific angle (

The light distribution surface B inclined by) forms a dark zone D1 partially removed from the dark zone D of one opposite edge region formed in the reference direction light distribution surface A. FIG.

)로 기울어지게 설치될 때 기준방향 확산렌즈(5')에서 출사되지 않는 영역으로 빛을 출사할 수 있게 된다.That is, the direction of the long axis of the diffusion lens 5 is greater than that of the reference direction.

When it is installed at an angle of inclination), light can be emitted to an area which is not emitted from the reference direction diffusion lens 5 '.

By using this point, the diffusion lenses 5 applied to the present invention are formed such that the direction of the major axis of the light distribution surface is inclined to one of -15 ° to 15 ° from the reference direction when the circuit board 4 is coupled. Specifically, the diffusion lens 5 is provided on the circuit board 4 such that the absolute value of the angle between the reference direction diffusion lenses 5 is equal to or less than the preset angle. In this case, the preset angle is preferably 15 °.

If the diffusion lens 5 is installed to be inclined at a size of ± 15 ° or more, as shown in FIG. 7, the departure areas 71 and 71 ′ that extend out of the illumination area S from the light distribution surface D2 are increased. In detail, as the light emitted to an area other than the lighting area S increases, the overall uniformity of light falls.

In addition, the diffusing lens 5 has a long axis direction of the light distribution surface of -15 °, -12 °, -9 °, -6 °, -3 °, 0 °, 3 °, 6 °, 9 °, 12 from the reference direction. Preferably, the circuit board 5 is installed on the circuit board 5 so as to be inclined to one of 15 degrees. If the angle of inclination is less than ± 3 ° or fluctuates to less than ± 3 °, the change of the light distribution surface is so small that the effect of the present invention cannot be expected, and the diffusion lens 5 is installed when the diffusion lens 5 is installed. ) Needs to be precisely installed to be inclined at a fine size of less than ± 3 °, causing a problem of delayed manufacturing and installation work.

In addition, the diffusing lenses 5 may have the same or different directions of major axes of the light distribution surface. In this case, when the diffusing lenses having the same long axis direction of the light distribution surface are configured in one group, if the long axes of the light distribution surface of the diffusion lenses 5 are all the same, one group is formed. If the direction of the major axis of the light distribution surface is all different, it is composed of a plurality of groups equal to the quantity of the diffusion lenses 5.

As described above, in the present invention, the direction of the major axis of the light distribution surface of the diffuse lens 5 is -15 °, -12 °, -9 °, -6 °, -3 °, 0 °, 3 °, The diffusing lenses 5 are configured to be inclined to one of 6 °, 9 °, 12 ° and 15 °, so that the diffusing lenses 5 are -15 ° group, -12 ° group, -9 ° group, -6 ° group, -3 ° group, 0 ° group, 3 ° group, 6 ° group, 9 ° group, 12 ° group, and 15 ° group.

In addition, as shown in FIG. 4, diffused lenses having the same long axis direction of the light distribution surface are provided in a symmetrical manner with respect to the center of the circuit board 4. That is, by configuring the inclination angle to be the same size, the amount of light emitted to the illumination area (S) is uniformly emitted symmetrically up and down and left and right.

Further, the diffusing lenses 5 are arranged on the circuit board 4 such that each of the groups in which the diffusing lenses 5 are included has the same quantity of diffusing lenses. If the number of diffusion lenses included in each of the groups is not the same, the light distribution surface inclined at an angle is concentrated compared to other light distribution surfaces, thereby reducing the lighting efficiency.

8 is a plan view showing a light distribution surface of the LED lighting apparatus according to an embodiment of the present invention.

As shown in FIG. 8, the LED lighting device 1 of the present invention has a sharp dark zone D1 compared to the dark zone D when the light distribution surface forms a reference direction (when the tilt angle is 0 °). It can be seen that the savings. At this time, the diffusion lenses 5 are -15 °, -12 °, -9 °, -6 °, -3 °, 0 when viewed in plan view from the installation direction of the diffusion lens when the light distribution surface forms the reference direction. It is installed on the circuit board 4 inclined to one of °, 3 °, 6 °, 9 °, 12 ° and 15 °.

In addition, the LED lighting device (1) can increase the total bacterial system beyond the general bacterial system specified by the Korean standard (KS) by emitting light to the existing dark zone (D) area.

As described above, the LED lighting apparatus 1 of the present invention is configured to cover the dark zone region by only a simple operation of changing the direction of the long axis of the light distribution surface, which has been conventionally applied, without using complicated structural deformations or reflecting plates of the housing 3 and the circuit board 4. By removing it, the overall bacterium of light can be efficiently increased.

In addition, the LED lighting device 1 can solve the problem that the conventional LED street lights are installed at a narrow interval by spreading the light so that the light distribution surface forms an elliptical shape.

1: LED lighting device 3: Housing 4: Circuit board
5: Diffusion lens 7: LED lamp
100: conventional LED street light 101: road
110: light distribution surface

Claims (7)

In the LED lighting device mounted on the street lamp installed along the road direction:
housing;
A circuit board having a flat plate shape installed inside the housing;
A plurality of LED lamps installed on the circuit board to emit light;
Installed on the outside of each of the LED lamps, including a diffusion lens for diffusing light emitted from the LED lamps so that the light distribution surface to form an elliptical shape having a long axis and a short axis,
The diffusion lenses may be formed on the circuit board such that the direction of the major axis of the light distribution surface is formed differently, but the absolute value of the angle between the major axis direction of the light distribution surface and the road direction is smaller than or equal to a preset angle. LED lighting. In the LED lighting device mounted on the street lamp installed along the road direction:
housing;
A circuit board having a flat plate shape installed inside the housing;
A plurality of LED lamps installed on the circuit board to emit light;
Installed on the outside of each of the LED lamps, including a diffusion lens for diffusing light emitted from the LED lamps so that the light distribution surface to form an elliptical shape having a long axis and a short axis,
The diffusion lens are between and including any one of a plurality of groups to include diffusion lens to the major axis direction of the light distribution surfaces matched to one group, and the long axis direction of the surface of the group of each of the light distribution said road direction The absolute value of the angle LED lighting device, characterized in that less than the preset angle. The LED illuminating device according to claim 2, wherein diffusion lenses having the same long axis direction of the light distribution surface are provided symmetrically about a center of the circuit board. The LED lighting apparatus of claim 2, wherein the number of diffusing lenses included in the groups is the same. delete The LED illuminating device according to any one of claims 1 to 4, wherein the predetermined angle is 15 degrees. delete

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