KR102107990B1 - Variable reflector for angle of beam spread and light projector having the same - Google Patents

Abstract

The present invention is capable of various adjustment of the directivity angle, may have an asymmetric reflection structure to eliminate glare during night illumination, a variable reflector for adjusting the directivity angle so as to increase the illuminance and luminance in a wide light-transmitting area and a floodlight having the same Provides
The variable reflector for adjusting the directivity according to the preferred embodiment of the present invention includes a light source arrangement port where a light source is located at one end, a light diffusion opening open at the other end, and a light source reflection whose cross section gradually expands from the light source arrangement port toward the light diffusion opening. A reflector body having a passage; A first reflective curved surface control plate disposed on the light source reflection path and hinged to the reflector body to rotate and rotate around the hinge axis to form a directivity angle from the optical axis; It characterized in that it comprises; a rotation angle of the first reflective surface control plate at a desired angle to change the angle of directivity;

Description

Variable reflector for angle adjustment and light projector having the same

The present invention relates to a variable reflector and a transmitter having the same, in particular, it is possible to adjust a variety of directivity angles, can have an asymmetric reflective structure to eliminate glare during night illumination, and increase the illuminance and luminance in a wide light-transmitting area. It relates to a variable reflector for adjusting the directivity angle and a transmitter having the same.

In Korea, the Act on the Prevention of Light Pollution by Artificial Lighting is financed, and Article 4 of the Act establishes the Light Pollution Prevention Plan and establishes and implements the Light Pollution Prevention Plan.

Looking at the current case of installing a Korean floodlight, it is essentially a reality that light pollution is inevitable because it is projected from the front using a symmetrical floodlight for the object to be flooded. This is often encountered when looking at the surrounding night sports venues.

The primary effects of misuse of light are glare, intrusion light into the window, scattered light, and confusion caused by crowd lighting, and these damages are caused by adjusting the installation point of the lighting fixture and the cut-off of the lamp shade. The damage can be minimized by the following method.

Here, glare causes visual discomfort and decreases the visibility of objects with visual conditions that are not suitable for the brightness distribution of the field of view or extreme brightness versus time. Therefore, as an example of a sports stadium that requires lighting at night, as well as a baseball field and a tennis court, in the case of a LED lighting facility installed at a port or an intersection, glare-free lighting technology is required to secure visibility.

As a background technology of the present invention, as Korean Patent Registration No. 10-0920742,'Anti-glare reflector for roads having asymmetric directional light distribution' has been proposed. This reflecting plate includes a light source placing portion in which a light source is installed; An outward reflection portion extending from one side of the light source placing portion and reflecting light irradiated from the light source to the outside; The light emitted from the light source is extended from the light source enclosing portion, and is formed on the opposite side of the outward reflection portion so that light irradiated from the light source is not directly irradiated to the outside, and is made of a direct shield portion formed with an inward reflection portion at the middle. This is to prevent glare from the driver of the vehicle by not being irradiated directly to the outside.

However, the background technique is difficult to apply in a sports stadium where the maximum diffusion angle is narrow, and thus a large area needs to be illuminated.

As another background technology of the present invention, as Korean Patent Registration No. 10-1531390,'Asymmetrical shape lens and street light including the same' has been proposed. Here, the lens of the asymmetric shape includes at least two or more curved surfaces through which light generated from the light emitting element passes, and the light distribution angle of the light passing through the at least two or more curved surfaces is different from each other, and the at least two curved surfaces are divided by boundary lines , At least two or more 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 length direction of the lens, and glare. It was made to reduce and improve the uniformity and lighting rate.

However, the background technology can reduce glare and improve uniformity and illumination rate, but it is difficult to apply in a sports stadium that needs to uniformly illuminate a large area.

On the other hand, there is a case where the brightness of the light is increased at the position where the projector is installed, and the angle of directivity of the light needs to be changed depending on the purpose. As a background technology of the present invention for this purpose, Korean Patent Registration No. 10-0815116, a'lighting system for LEDs capable of adjusting the inclination angle and distribution of light distribution' has been proposed. This allows the position of the optical lens, which can adjust the divergence angle of the light emitted from the LED, to be adjusted in the optical axis direction, so that the alignment angle of the light distribution pattern or the LED unit module can be adjusted according to the use environment and demands. However, the background technique is an adjustment of the directing angle according to the rotation of the optical lens, so that all of the reflected light is not condensed toward the light-transmitting area, the light-transmitting efficiency decreases and light glare occurs.

Korean Registered Patent Registration No. 10-0920742 Korean Registered Patent Registration No. 10-1531390 Korean Registered Patent Registration No. 10-0815116

The present invention is capable of various adjustments of the directivity angle, may have an asymmetric reflection structure to eliminate glare during night illumination, and a variable reflector for adjusting the directivity angle so as to increase the illuminance and luminance in a wide light-transmitting area and a floodlight having the same The purpose is to provide.

A transmitter having a variable reflector for adjusting the directivity according to a preferred embodiment of the present invention includes a light source arrangement port at which one light source is located and a light diffusion opening open at the other end and a cross section gradually extending from the light source arrangement port toward the light diffusion opening A reflector body having a light source reflection path; A first reflective curved surface control plate disposed on the light source reflection path and hinged to the reflector body to rotate and rotate around the hinge axis to form a directivity angle from the optical axis; It characterized in that it comprises; the first angle of the control means for rotating the first reflective surface control plate to a desired angle to change the angle of orientation.

In addition, the reflector body is characterized in that at least one hinge axis is provided.

In addition, the directional angle manipulation means includes a pivot connector having one end pivotally coupled to a rear surface of the first reflective curved surface control plate; A screw adjustment shaft screwed to the other end of the pivot connector; A compression spring which is inserted around the screw adjustment shaft, one end of which is supported by the pivot connector and the other end of which is supported by the reflector body; It is characterized in that it comprises a; fixed to the screw adjustment shaft is disposed on the outside of the reflector body and the control surface for adjusting the directivity of the first reflective surface control plate according to the rotation operation direction.

In addition, the directional angle manipulation means includes a pivot connector having one end pivotally coupled to a rear surface of the first reflective curved surface control plate; A screw adjustment shaft screwed to the other end of the pivot connector; It is characterized in that it is disposed on the outside of the reflector body and at the same time, the servo motor for direct angle adjustment to directly adjust the directivity of the first reflective curved surface control plate according to the rotational driving direction.

In addition, the first reflective curved surface control plate is characterized by having a reflective curved surface such that the first tangent line and the first normal line continuously changing the first incident angle and the first reflected angle.

In addition, a second reflective curved surface that is asymmetrically formed on the side facing the first reflective curved surface adjusting plate to change the second incident angle and the second reflective angle while the second normal is continuously inclined along the second tangent. It is characterized in that the addition is formed.

In addition, the third and fourth reflective plane parts having the same inclination with respect to the optical axis to achieve mutual symmetry; further comprising.

In addition, the first reflective curved surface control plate has a relatively longer reflection path than the second reflective curved portion, and the reinforcing interference regions emitted from the first reflective curved portion and the second reflective curved portion overlap each other and are centered around the optical axis. It is characterized in that it appears to be deflected toward the reflective surface control plate.

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

In addition, the light reflection path further includes a pair of corner reflection curved portions formed at corner portions where the second reflection curved portion meets the third and fourth transmissive plane portions for additional reinforcement interference.

On the other hand, the projector having a variable reflector for adjusting the directivity angle according to the present invention, a heat sink body having a heat sink fin for absorbing and dissipating heat; An LED module installed with a plurality of LED elements arranged on the front surface of the heat sink body; A variable reflector disposed on the front surface of the LED module and mounted in plurality on the heat sink body side; A front case assembled to the front surface of the heat sink body; A translucent plate disposed on the front surface of the variable reflector and coupled to the front case; A rear case having a plurality of heat discharging holes and coupled to the rear surface of the heat sink body; And a hinge bracket hinged to both ends of the heat sink body.

According to the projector having a variable reflector for adjusting the directivity of the present invention, it is possible to rotate the first reflecting surface control plate hinged to the reflector main body, thereby enabling various adjustment of the directivity of the light according to the purpose. In addition, when the second reflective curved portion forming an asymmetrical side is formed on the side facing the first reflective curved surface control plate, glare can be eliminated during night illumination. In addition, it has an advantage that the illuminance and luminance are increased in a wide light-transmitting area.

In addition, since a plurality of variable reflectors are installed, the light transmitting unit simultaneously emits light having various different directing angles in one light transmitting unit, thereby obtaining an effect of widening the transmission area.

The following drawings attached in this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is only described in the accompanying drawings. It should not be interpreted as limited.
1 is a perspective view of a variable reflector for adjusting the directivity angle according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the variable reflector shown in Figure 1;
Figure 3 is a longitudinal sectional view of Figure 1;
4A to 4D are use state diagrams showing the angle of change of the variable reflectors shown in FIG. 1 changed to 15 degrees, 30 degrees, 45 degrees, and 60 degrees, respectively.
5 and 6 are views illustrating a light diffusion path that appears when the variable reflector shown in FIG. 1 has an asymmetric structure.
7 is a perspective view of a projector having a variable reflector for adjusting the directivity according to an embodiment of the present invention.
8 is an exploded perspective view of the projector shown in FIG. 7;
9 is a longitudinal sectional view of a variable reflector according to another embodiment of the directional angle manipulation means of the present invention.

The present invention will be described in detail below with reference to the embodiments presented in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention and the invention is not limited thereto.

The variable reflector 10 according to the present embodiment is capable of adjusting the directivity angle θ as shown in FIG. 4. For example, the directivity angle θ may be 15 degrees, 30 degrees, 45 degrees, and 60 degrees. Here, the directivity angle θ refers to an irradiation angle that is projected while the variable reflector 10 is disposed at a certain height on the ground.

1 to 3, the variable reflector 10 includes a reflector body 12, a first reflecting surface control plate 121 and directing angle manipulation means 20 for changing the directing angle.

The reflector body 12 has a gradual cross-section toward the light-diffusion opening 12b from the light-source arrangement 12a and the light-diffusion opening 12b and the light-source arrangement 12a where the light source 5 is located at one end. It has a light source reflection passage (12c) extending to.

The first reflective curved surface adjustment plate 121 is disposed on the light source reflection passage 12c. In addition, the first reflective surface control plate 121 is hinged to the hinge groove 13 of the reflector body 12 with a hinge protrusion 121a to be rotated and operated around its hinge shafts H1, H2, H3, H4. It is made possible. One or more hinge shafts H1, H2, H3, and H4 may be installed corresponding to the number of hinge grooves 13. In this embodiment, four hinge grooves 13 are provided with the same number of hinge shafts H1, H2, H3, H4, but the present invention is not limited to this number. The hinge shafts H1, H2, H3, and H4 are configured in a cross groove that is open upward, as illustrated, but may also be configured in a hole.

The directing angle manipulation means 20 rotates the first reflective curved surface adjusting plate 121 at a desired angle to change the directing angle.

In one embodiment, the directional angle manipulation means 20 has a pivot connector 201 with one end pivotably coupled to the rear surface of the first reflective surface control plate 121 and a screw adjustment shaft screwed to the other end of the pivot connector 201. (202), the screw adjustment shaft (202) is inserted around the pivot pivot compression spring (204), and the screw adjustment shaft (the one end is supported by the pivot connector 201 and the other end is supported by the reflector body (12), It is fixed to 202) is disposed on the outside of the reflector body 12 and includes a reflective surface control plate operating handle 203 for fine rotation of the first reflective surface control plate 121 according to the rotation operation direction. At this time, the pivot connector 201 may be provided with a pivot shaft housing 201a to be pivotally connected to the pivot shaft 201a formed on the rear surface of the first reflective curved control plate 121.

Therefore, when the pivot connector 201 is advanced by rotating the reflective handle controller 203 in one direction, the first reflective curved controller 121 is rotated clockwise around the hinge axis H1 to reduce the directivity angle. Lose. On the contrary, when the pivot handle 201 is retracted by rotating the manipulation handle 203 in the other direction, the first reflection curved surface adjustment plate 121 is rotated counterclockwise around the hinge axis H1 to increase the directivity angle. .

As described above, various directional angles of the first reflective curved surface adjusting plate 121 can be obtained according to the rotational operating direction of the reflective curved surface adjusting plate operating handle 203. Therefore, it is possible to reduce the reflected light disappearing far away by the rotation operation of the reflective surface control plate operation handle 203 according to the height position where the variable reflector 10 is installed, thereby improving light efficiency.

Here, as shown in FIGS. 5 and 6, the first reflective surface control plate 121 has a first tangent T1 and a first normal N1 that change the first incident angle α1 and the first reflected angle β1 equally. It may have a reflective surface to be continuous.

In addition, a second tangential line in which the slope of the second normal line N2 changes while the second incident angle α2 and the second reflected angle β2 are changed by forming an asymmetry on the side facing the first reflective surface control plate 121. A second reflective curved portion 122 to be continuously made along (T2) may be formed. An aluminum coating layer is formed on the second reflective curved portion 122 to reflect light. At this time, the first reflective surface control plate 121 has a reflection path longer than the second reflective curved portion 122, and is emitted from the first reflective curved portion 121 and the second reflective curved portion 122 to mutually It is preferable that the overlapping reinforcing interference region OL appears to be deflected toward the first reflective surface control plate 121 around the optical axis X. Here, the optical axis X is disposed so that the light source 5 is disposed closer to the second reflective curved portion 122 than the first reflective curved portion 121 at the center O of the light source arrangement port 12a, so that the light transmission is performed. You can get the effect of making it farther.

In addition, third and fourth reflective plane parts 123 and 124 having the same inclination with respect to the optical axis X and forming mutual symmetry may be further included.

In addition, a pair of edge reflection curved portions 132 and 132 formed on the edge portion where the second reflection curved portion 122 and the third and fourth transmissive plane portions 123 and 124 meet for additional reinforcement interference in the light source reflection path 12c. Can be further configured.

One form of the projector 100 having the variable reflector 10 configured as described above will be described.

7 and 8, the floodlight 100 has a heat sink body 20 having a heat sink fin 201 for absorbing and dissipating heat, and a LED element 221 arranged in multiple numbers on the front surface of the heat sink body 20. The LED module 22 and the variable reflector 10 disposed on the front of the LED module 22 and mounted on one or more side of the heat sink body 20 and the front surface of the heat sink body 20 The heat sink body having a front case 24 assembled to the front surface, a translucent plate 26 disposed on the front surface of the variable reflector 10 and coupled to the front case 24, and a plurality of heat discharging holes 281 It may be configured to include a rear case 28 coupled to the rear surface of the (20), and a hinge bracket 30 which is hinged to both ends of the heat sink body 20. Here, a silicon gasket 25 may be additionally installed between the front case 24 and the light-transmitting plate 26 for watertightness.

The variable reflector 10 is applied to the emitter 100 configured as described above to obtain various directing angles, thereby increasing light efficiency. In addition, when the second reflective curved portion 122 forming an asymmetrical side is provided on the side facing the first reflective curved surface control plate 121, it is usefully installed in sports stadiums, ports, airports, intersections, etc., where there should be no glare during illumination at night Can be.

Particularly, in the floodlight 100, a plurality of variable reflectors 10 are installed, such that when four are installed as illustrated in FIG. 7, the floodlight 100 may simultaneously emit light having four different directivity angles. It is possible to obtain the effect of widening the transmission region.

Meanwhile, the directing angle manipulation means 20 applied to the variable reflector 10 of the present invention may be implemented as shown in FIG. 9. That is, the pivot connector 201, one end of which is pivotally coupled to the rear surface of the first reflective curved surface control plate 121, the screw adjustment shaft 202, which is screwed to the other end of the pivot connector 201, and the reflector body 12 ) May be composed of a servo motor (M) for directing angle adjustment which is arranged on the outside of the screw and is directly connected to the screw adjusting shaft 202 and adjusts the directing angle of the first reflective curved surface adjusting plate 121 according to the rotation driving direction.

Here, the screw adjustment shaft 202 may be configured integrally with the drive shaft of the servo motor M for directing angle adjustment.

Therefore, by rotating and controlling the drive shaft of the servo motor M for directing angle adjustment, the forward and backward movement of the pivot connector 201 is induced, and the directing angle of the first reflective surface control plate 121 can be adjusted.

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

10: variable reflector
12: reflector body
121: first reflective surface control plate
122: second reflective curved portion
123: third reflective plane
124: fourth reflection plane
132: corner reflection curved portion
141: first fixing plate
142: second fixing plate
20: Direction angle manipulation means
201: pivot connector
202: screw adjustment shaft
203: pivot connector compression spring
204: reflective surface control plate operation handle
M: Servo motor for directing angle adjustment

Claims (11)

In the variable reflector 10 for adjusting the directivity,
The light source reflection passage 12a which is located at one end and the light diffusion opening 12b open at the other end and the light source reflection passage whose cross section gradually extends from the light source placement hole 12a toward the light diffusion opening 12b A reflector body 12 having (12c); A first reflective surface control plate 121 disposed at the light source reflection path 12c and hinged to the reflector body 12 and rotated around the hinge axis to form a directivity angle from the optical axis X; Includes; the directional angle manipulation means 20 for changing the directional angle by rotating the first reflective surface control plate 121 at a desired angle.
The reflector body 12 is provided with one or more hinge shafts (H1, H2, H3, H4),
The directing angle manipulation means 20
A pivot connector 201 having one end pivotally coupled to a rear surface of the first reflective curved surface control plate 121; A screw adjustment shaft 202 screwed to the other end of the pivot connector 201; A pivot connector compression spring 204 having one end supported by the pivot connector 201 and the other end supported by the reflector body 12 by being inserted around the screw adjustment shaft 202; A reflection surface adjustment plate operation handle 203 which is fixed to the screw adjustment shaft 202 and is disposed outside the reflector body 12 and adjusts the directivity of the first reflection surface adjustment plate 121 according to the rotation operation direction; Variable reflector for directivity adjustment, characterized by including. delete delete delete According to claim 1,
The first reflective curved surface control plate 121 has a reflective curved surface such that the first tangent T1 and the first normal N1 continuously changing the first incident angle α1 and the first reflected angle β1 are the same. Variable reflector for adjusting the directivity angle, characterized in that. According to claim 1,
A second tangent line in which the slope of the second normal (N2) changes while the second incident angle (α2) and the second reflected angle (β2) are changed by forming an asymmetry on the side facing the first reflective curved surface control plate 121 ( A variable reflector for adjusting the directivity angle, characterized in that a second reflective curved portion 122 is formed to be continuously made along T2). According to claim 1,
And a third and fourth reflective plane parts 123 and 124 having the same inclination with respect to the optical axis X to form mutual symmetry; and a variable reflector for adjusting the directivity. The method of claim 6,
The first reflective curved surface control plate 121 has a relatively longer reflection path than the second reflective curved surface portion 122, and is emitted from the first reflective curved surface control plate 121 and the second reflective curved surface portion 122 to mutually A variable reflector for adjusting the angle of orientation, characterized in that the overlapping reinforcing interference region (OL) is deflected toward the first reflective surface control plate 121 around the optical axis (X). The method of claim 8,
Characterized in that the light source (5) is arranged such that the optical axis (X) is located closer to the second reflective curved portion (122) than the first reflective curved surface control plate (121) at the center (O) of the light source arrangement (12a) Variable reflector for directing angle adjustment. According to claim 1,
The light reflection path 12c includes a pair of corner reflection curved portions 132 and 132 formed at corner portions where the second reflection curved portion 122 and the third and fourth reflective plane portions 123 and 124 meet for additional reinforcement interference; Variable reflector for adjusting the directivity angle, characterized in that it further comprises. A heat sink body 20 having a heat dissipation fin 201 that absorbs and dissipates heat;
An LED module 22 installed with a plurality of LED elements 221 arranged in front of the heat sink body 20;
A variable reflector (10) for adjusting the directivity of claim 1 disposed on the front surface of the LED module (22) and mounted in plurality on the heat sink body (20) side;
A front case 24 assembled to the front surface of the heat sink body 20;
A translucent plate 26 disposed on the front surface of the variable reflector 10 and coupled to the front case 24;
A rear case 28 having a plurality of heat discharging holes 281 and 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.

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