KR102030931B1 - Glare-free asymmetry flood light reflector and lamp using the same - Google Patents

Abstract

The present invention provides an asymmetry floodlighting reflector which has an asymmetrical reflection structure to eliminate glare during illumination at night and increases illuminance and luminance for a wide floodlighting area; and a flood light using the same. According to an appropriate embodiment of the present invention, the asymmetry floodlighting reflector comprises: a reflective mirror body having a light source disposition hole which has a predetermined width and a light source formed on one end thereof, and a light diffusion opening open in the other end thereof, and a light source reflection passage with a cross section gradually increasing from the light source disposition hole toward the light diffusion opening; a first reflective curved portion formed in the light source reflection passage and allowing a first normal to be continuous along a first tangent line along which the slope changes while equally changing a first incident angle and a first reflection angle around an optical axis; a second reflective curved portion asymmetrical to the first reflective curved portion on a side thereof facing the first reflective curved portion, and allowing a second normal to be continuous along a second tangent line along which the slope changes while equally changing a second incident angle and a second reflection angle; and third and fourth reflective plane portions symmetrical to each other with the same slope with respect to the optical axis. The first reflective curved portion has a reflection path relatively longer in length than the second reflective curved portion, and a constructive interference area, in which rays of light are emitted from the first and second reflective curved portions and overlap each other, is biased toward the first reflective curved portion with the optical axis as the center thereof.

Description

Glare-free asymmetry flood light reflector and lamp using the same}

The present invention relates to an asymmetrical reflector and a floodlight using the same, in particular to have an asymmetrical reflective structure to eliminate glare during night illumination, asymmetrical reflector reflecting light and luminance in a wide floodlight area and to apply the same Etc.

In Korea, the Light Pollution Prevention Act is mandated, and it is stated to develop and implement a plan for the prevention of light pollution by establishing the Light Pollution Prevention Plan.

Looking at the present case of the installation of the floodlight in Korea, it is essentially the reality that light pollution is inevitable because it is projected to the front by using a symmetrical floodlight to the object to be projected. This is common if you look around the night sports arena.

The primary effects of misuse of light include glare, intrusion into windows, scattered light, and confusion caused by crowded lights. These damages can be caused by the installation point of lighting fixtures and the adjustment of the cut-off of lamp shades. Such damage can be minimized.

Here, the glare causes visual discomfort and reduces the visibility of the object due to visual conditions that are not suitable for the brightness distribution of the field of view or the extreme contrast to the brightness. Therefore, in the case of a sports stadium that requires lighting at night, such as a baseball field, tennis court, as well as LED lighting facilities installed in ports or intersections, glare-free lighting technology is required to secure visibility.

As a background technology of the present invention, Korean Patent Registration No. 10-0920742 has been proposed, 'Anti-glare reflector for roads having asymmetric directional light distribution'. The reflector includes a light source set-up part in which a light source is installed; An outward reflecting unit extending from one side of the light source settling unit and reflecting light emitted from the light source to the outside; Is formed on the opposite side of the outward reflecting portion extending from the light source settled to prevent the light irradiated from the light source is directly irradiated to the outside, the light is irradiated from the light source, characterized in that made of a direct shielding portion formed with an inward reflection portion at the interruption By not being irradiated directly to the outside to prevent glare to the driver of the vehicle.

However, the background art is difficult to apply in sports venues where the maximum diffusion angle is narrow to illuminate a large area.

As a background technology of the present invention, as Korean Patent Registration No. 10-1531390, an asymmetric lens and a street lamp including the same have been proposed. The asymmetrical lens may include at least two curved surfaces through which light generated from the light emitting device passes, different light distribution angles of the light passing through the at least two curved surfaces, and the at least two curved surfaces are divided by boundary lines. At least two curved surfaces have different curvatures based on the boundary lines, and the boundary lines include a first boundary line extending in the width direction of the lens and a second boundary line extending in the longitudinal direction of the lens. To reduce and improve the uniformity and lighting rate.

However, the background art can reduce the glare and improve the uniformity and the lighting rate, but there is a problem that is difficult to apply in a sports stadium that needs to illuminate a large area uniformly.

Korea Patent Registration No. 10-0920742 Korea Patent Registration No. 10-1531390

An object of the present invention is to provide an asymmetric reflective structure to eliminate glare during night illumination, but to provide an asymmetric reflective reflector and a floodlight using the same to increase illuminance and brightness in a wide floodlight area.

An asymmetric light reflecting mirror according to a preferred embodiment of the present invention includes a light source arrangement having a light source at one end having a predetermined width, a light diffusion opening open at the other end, and a light source whose cross section gradually extends toward the light diffusion opening at the light source arrangement A reflector body having a reflection path; The light source reflection passage may include: a first reflective curved portion configured to continuously form a first normal along a first tangent line having a change in inclination while changing the first incident angle and the first reflective angle around the optical axis; A second reflective curved surface portion which is asymmetrical to the side facing the first reflective curved surface portion so that the second normal angle and the second reflective angle are changed to be the same while the second normal line is continuously changed along the second tangent line with a change in inclination; Third and fourth reflection plane portions that have the same inclination with respect to the optical axis and are symmetric with each other, wherein the first reflection curve portion has a reflection path that is relatively longer than the second reflection curve portion, and has a first reflection curve surface. Reinforcing interference regions emitted from the second and second reflective curved portions overlapping each other are biased toward the first reflective curved portion with respect to the optical axis.

In addition, the light source is arranged so that the optical axis is located closer to the second reflective curved surface portion than the first reflective curved surface portion at the center of the light source arrangement.

The light source reflection passage may further include: a pair of first edge reflecting curved portions formed at corner portions where the first reflecting curved portion and the third and fourth light emitting surface portions meet for additional constructive interference; And a pair of second edge reflective curved portions formed at corners where the second and fourth reflective flat portions meet.

In addition, the reflector body is characterized in that the first fixing plate formed extending from the light diffusion opening side and the second fixing plate formed extending from the light source arrangement port side is provided.

On the other hand, the floodlight having an asymmetric light reflecting mirror without glare according to the present invention, the heat sink body having a heat radiation fin for absorbing and dissipating heat; An LED module having a plurality of LED elements arranged in front of the heat sink body; An asymmetric floodlight reflector disposed on the front surface of the LED module and mounted on the heatsink body side; A front case assembled to the front of the heat sink body; A floodlight plate disposed on a front surface of the asymmetric floodlight reflector and coupled to a front case; A rear case having a plurality of heat discharge holes and coupled to a rear surface of the heat sink body; And a hinge bracket hinged to both ends of the heat sink body.

The asymmetric light reflecting mirror according to the present invention is asymmetrically facing each other by the first reflection surface portion and the second reflection surface portion asymmetrically made by the reinforcement interference in the overlapping portion can achieve a bright illumination in a large area far away. Therefore, when installing a floodlight to which asymmetric floodlights are applied, it is possible to prevent glare and to obtain high illuminance and uniform brightness in a certain area.

Furthermore, when the first and second corner reflection curved portions are further formed in the asymmetric light reflecting mirror, the illuminance is further increased to improve the lighting efficiency.

In addition, the floodlight using the asymmetric floodlight without glare provides a unique light distribution method that does not violate the light pollution prevention law of Korea.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view of an asymmetric light reflecting mirror of one embodiment of the present invention.
2 is a front view of FIG. 1;
3 is a cross-sectional view taken along the line AA of FIG.
4 is a cross-sectional view taken along line BB of FIG. 2.
5 is a perspective view of an asymmetric light reflecting mirror of one embodiment of the present invention.
6 is a front view of FIG. 5;
7 is a cross-sectional view taken along line CC of FIG. 6.
8 is a cross-sectional view taken along the line DD of FIG. 6.
9A and 9B are diagrams showing a light diffusion path appearing in the asymmetric light reflecting mirror of the present invention.
10A is a light distribution graph shown in the asymmetric light reflecting mirror shown in FIG. 1.
10B is a light distribution graph shown in the asymmetric light reflector shown in FIG. 5.
Fig. 11 is a perspective view of a floodlight in which an asymmetric floodlight of one embodiment of the present invention is assembled.
12 is an exploded perspective view of the floodlight shown in FIG.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

As shown in FIGS. 1 to 4, the asymmetric light reflecting mirror 10 of one embodiment of the present invention has a light diffusion opening 12a having a light source positioned at one end and a light diffusing opening open at the other end thereof. And a reflector body 12 having a light source reflection passage 12c whose cross section gradually extends from the light source arrangement opening 12a toward the light diffusion opening 12b. Herein, the light source may be an LED element 221 arranged in the LED module 22.

In addition, the light source reflection passage 12c includes a first reflective curved surface portion 121, a second reflective curved surface portion 122, and third and fourth reflective flat surface portions 123 and 124 around the optical axis X. The first reflective curved surface portion 121, the second reflective curved surface portion 122, and the third and fourth reflective surface portions 123 and 124 are formed with an aluminum coating layer for reflecting light on the surface.

As shown in FIG. 9, the first reflective curved surface 121 is continuously along the first tangent T1 in which the first normal line N1 changes in slope while changing the first incident angle α1 and the first reflective angle β1 equally. It is supposed to be made. The second reflective curved surface portion 122 is asymmetrically formed on the side facing the first reflective curved surface portion 121. The second reflective curved portion 122 changes the second incidence angle α2 and the second reflection angle β2 equally while the slope of the second normal line N2 is continuously changed along the second tangent line T2. It is. Therefore, when the first reflective curved portion 121 and the second reflective curved portion 122 are cut, the first reflective curved portion 121 and the second reflective curved portion 121 form a continuous curved shape.

Here, the first reflective curved surface portion 121 has a reflection path that is relatively longer than the second reflective curved surface portion 122 and is emitted from the first reflective curved surface portion 121 and the second reflective curved surface portion 122. The reinforcement interference regions OL overlapping each other are configured to appear to be deflected toward the first reflection curved portion 121 about the optical axis X.

The third and fourth reflection plane portions 123 and 124 are symmetrical with the same inclination θ with respect to the optical axis X as a plane.

On the other hand, the LED element 221 which is a light source is disposed so that the optical axis X is located closer to the first reflective curved surface portion 121 side than the second reflective curved surface portion 122 at the center O of the light source arrangement opening 12a. As a result, the light emission is farther away.

The reflector body 12 may further include a first fixing plate 141 extending from the light diffusion opening 12b side and a second fixing plate 142 extending from the light source arrangement opening 12a side. .

The asymmetric light reflecting mirror 10 configured as described above can obtain a light distribution graph as shown in FIG. 10A and can prevent glare.

On the other hand, the asymmetric light reflecting mirror 10 according to another embodiment of the present invention is the first reflection curved surface portion 121 and the third and third for additional constructive interference in the light source reflection passage 12c as shown in FIGS. The corner where the pair of first corner reflection surface portions 131 and 131 formed at the corner portion where the four light transmission plane portions 123 and 124 meet, and the second reflection curved portion 122 and the third and fourth light transmission plane portions 123 and 124 meet. It may be configured to further include a pair of second corner reflection surface portion (132,132) formed in the portion.

In this case, reinforcement interference of light may occur through the pair of first corner reflecting curved portions 131 and 131 and the pair of second corner reflecting curved portions 132 and 132 to further increase the luminance of the light-transmitting region. 10, a light distribution graph as shown in FIG. 10B can be obtained, and the glare can be prevented.

Reference numeral '40' is a 'protection cover' that protects the switch power supply (SMPS).

One embodiment of the floodlight 100 using the asymmetric floodlight reflector 10 configured as described above will be described.

11 and 12, the floodlight 100 includes a heat sink body 20 having heat dissipation fins 201 for absorbing and dissipating heat, and a plurality of LED elements 221 arranged on the front surface of the heat sink body 20. ) Is installed with an LED module 22, an asymmetric floodlight reflector 10 disposed at the front of the LED module 22 and mounted at least one side of the heat sink body 20, and the heat sink body 20 The front case 24 is assembled to the front of the), the floodlight plate 26 is disposed on the front of the asymmetric light reflecting mirror 10 and coupled to the front case 24, and a plurality of heat discharge holes (281) And a rear case 28 coupled to the rear surface of the heat sink body 20 and a hinge bracket 30 hinged to both ends of the heat sink body 20.

Here, the silicon gasket 25 may be additionally installed between the front case 24 and the floodlight plate 26 for watertightness.

As such, the floodlight 100 is applied to the asymmetric floodlight reflector 10 may be usefully installed in sports stadiums, harbors, airports, intersections that should not be glare when illuminated at night.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art may make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by the invention as such variations and modifications but only by the claims appended hereto.

10: Asymmetric Floodlight
12: reflector body
121: first reflective surface portion
122: second reflective curved portion
123: third reflection plane portion
124: fourth reflecting plane portion
131: first corner reflection surface portion
132: second corner reflection surface portion
141: first fixing plate
142: second fixing plate

Claims (5)

The cross-section gradually extends from the light source arrangement opening 12a where the light source is located at one end having a predetermined width w, the light diffusion opening 12b open at the other end, and the light diffusion opening 12b toward the light diffusion opening 12b. A reflector body 12 having a light source reflection passage 12c; A first tangent T1 in which the first normal line N1 changes in inclination while changing the first incident angle α1 and the first reflection angle β1 equally around the optical axis X in the light source reflection passage 12c. A first reflection surface portion 121 to be continuously formed along the surface; The second tangent line T2 in which the slope of the second normal line N2 is changed while making the second incident angle α2 and the second reflective angle β2 equally asymmetrical to the side facing the first reflective curved portion 121. A second reflective curved surface portion 122 to be continuously formed along the line; Third and fourth reflection plane portions 123 and 124 which have the same inclination with respect to the optical axis X and are symmetric with each other; A pair of first edge reflecting surfaces 131 and 131 formed at the corner portions where the first reflecting curved portion 121 and the third and fourth light emitting flat portions 123 and 124 meet for additional reinforcement interference of the light source reflection passage 12c. )Wow; And a pair of second edge reflective curved portions 132 and 132 formed at corner portions where the second reflective curved portion 122 and the third and fourth light transmitting flat portions 123 and 124 meet each other.
The first reflection surface portion 121 has a reflection path that is relatively longer than the second reflection surface portion 122, and is emitted from the first reflection surface portion 121 and the second reflection surface portion 122 to overlap each other. The reinforcing interference area OL is deflected toward the first reflective curved portion 121 about the optical axis X, and the optical axis X is the first half at the center O of the light source arrangement 12a. Arrange the light source to be located closer to the second reflective curved surface portion 122 than the curved surface portion 121,
The reflector body 12 is provided with a first fixing plate 141 extending from the light diffusion opening 12b side and a second fixing plate 142 extending from the light source arrangement opening 12a side. Asymmetric flood reflector without glare. delete delete delete A heat sink body 20 having heat dissipation fins 201 for absorbing and dissipating heat;
An LED module 22 having a plurality of LED elements 221 arranged in front of the heat sink body 20;
An asymmetric floodlight reflector (10) of claim 1 disposed on the front surface of the LED module (22) and mounted on at least one side of the heat sink body (20);
A front case 24 assembled to the front of the heat sink body 20;
A floodlight plate 26 disposed on the front surface of the asymmetric floodlight reflector 10 and coupled to the front case 24;
A rear case 28 having a plurality of heat exhaust holes 281 and coupled to a rear surface of the heat sink body 20;
Floodlight having a non-glare asymmetric light reflector, characterized in that it includes; hinge brackets (30) hinged to both ends of the heat sink body (20).

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