KR20130073620A - Lighting apparatus - Google Patents

Abstract

PURPOSE: A lightening device is provided to prevent a black-out by controlling illumination intensity based on a location of a user within a lightening space and a location movement. CONSTITUTION: A light-emitting unit (20) radiates a light to a certain area. The light emitting unit contains a first LED light source to a Kth LED light source (21-23). One or more of a light sensor (30) detects a location of a user in the area of a lightening space. The lightening space is divided into a first area to a Nth area (N>1). A control unit controls at least one among the on and off of LED light source or the illumination intensity.

Description

[0001]

The present invention relates to a lighting device, and more specifically, to control the on / off and illuminance of the LED light source on the basis of the user's position and position movement in the lighting space, and focused toward the user or the user's glare and black out It relates to a lighting device that can prevent the phenomenon.

Generally, incandescent lamps, discharge lamps, and fluorescent lamps are mainly used as light sources for lighting, and they are used for various purposes such as home use, landscape use, and industrial use.

In particular, resistive light sources such as incandescent lamps have low efficiency and high heat generation problems. In the case of discharge lamps, there are problems such as high voltage and high voltage. In fluorescent lamps, environmental problems caused by mercury use can be mentioned.

In order to solve the shortcomings of these light sources, interest in light emitting diode (LED) lighting, which has many advantages such as efficiency, color diversity, and autonomy of design, has increased.

LED is a semiconductor device that emits light when a voltage is applied in the forward direction, has a long life, low power consumption, and has electrical, optical and physical characteristics suitable for mass production.

Recently, large-scale buildings such as buildings are widely used for lighting of indoor spaces, and LED lighting is installed at predetermined intervals on the ceiling of the lighting space, and for this purpose, LED lighting is arranged at predetermined intervals on the ceiling. Recesses are provided.

On the other hand, the LED lighting is very strong straightness of the LED light source is causing a glare to the user when the LED light source is directly observed to the user or causes a blackout phenomenon when severe. The angle at which the user can directly observe the LED light source is called a cut off angle, and the LED light installed on the ceiling has a cut off angle fixed by the depth of the recess, and the cut off angle is It is directly linked to the discomfort that the user feels.

If the cut-off angle is large, the area where the user can directly see the LED light source is increased, on the contrary, if the cut-off angle is small, the user can reduce the discomfort caused by glare, but the amount of light irradiated to the lighting space This decrease results in a decrease in overall brightness. That is, when the user's position is located outside the cut off angle, the user may not receive enough light.

In addition, the user's position in the office space is constantly changing, the LED light is constantly irradiated with light in a fixed position, so in some cases irradiates light to unnecessary areas, thereby wasting unnecessary power, In some cases, light may not be irradiated to a required area, which may cause inconvenience to a user.

The present invention is to solve the problem to provide a lighting device that can control the on / off and illuminance of the LED light source based on the user's position and position movement in the lighting space.

In addition, an object of the present invention is to provide an illumination device capable of focusing illumination toward a user or preventing a user's glare and blackout phenomenon.

In order to solve the above problems, according to an aspect of the present invention, in the illumination space partitioned into the first region to the N-th (N> 1) region, the first to K-th LED for irradiating light to a specific region A light emitting unit including a light source, one or more light sensors for detecting a user's position in each area of the illumination space, and a corresponding LED for irradiating light to a corresponding area of the illumination space where the user is located when the user's position is detected. Provided is a lighting device including a control unit for controlling at least one of on / off and illuminance of a light source.

In addition, the controller operates the first LED light source when the user's location is detected as the first area, or increases the illuminance of the first LED light source when the first LED light source is in operation, and detects the user's location as the second area. When the second LED light source is operated or the second LED light source is in operation, the illumination of the second LED light source may be increased.

The controller may operate the second LED light source or increase the illuminance of the second LED light source when the second LED light source is in operation when the user is detected in the second area after being sensed in the first area.

In addition, the controller may turn off the first LED light source or reduce the illuminance of the first LED light source.

In addition, the light emitting unit may be disposed in a recess provided in the ceiling of the lighting space, and the recess may include a bottom surface and a plurality of side surfaces inclined at a predetermined angle with respect to the bottom surface.

In addition, any one LED light source may be disposed on the bottom surface of the recess, and the remaining LED light sources may be disposed on each side of the recess.

In addition, the LED light sources disposed on the bottom surface and each side of the recess may irradiate light to each corresponding area of the illumination space.

In addition, according to another aspect of the present invention, a frame having a plurality of side surfaces positioned on the ceiling of the lighting space, and inclined at a predetermined angle with respect to the floor surface and the bottom surface and each side of the frame, respectively A light emitting unit including a plurality of LED light sources arranged and at least one optical sensor for detecting a user position in each area of an illumination space partitioned into a plurality of spaces according to an on / off state of each LED light source and inside the frame When the user's position is detected in a specific area of the lighting space where the particular LED light source can be seen, to control at least one or more of on / off and illuminance of the corresponding LED light source and other LED light sources to reduce the glare of the user. There is provided a lighting device including a control unit.

In addition, the controller may turn off the corresponding LED light source or reduce the illuminance of the corresponding LED light source when the user's position is detected in a specific area of the lighting space where the specific LED light source disposed inside the frame is visible.

In addition, the controller may operate another LED light source or increase the illuminance of another LED light source.

In addition, the controller operates all the light sources when it is detected that the user is in a position where the LED light sources cannot be observed, and then when the user's position is detected in a specific area where the specific LED light source disposed inside the frame is visible, The LED light source may be turned off or the illuminance of the LED light source may be reduced.

In addition, the controller may increase the illuminance of another LED light source.

As described above, the lighting apparatus according to the embodiment of the present invention may control the on / off and illuminance of the LED light source based on the position and the position movement of the user in the lighting space.

In addition, the lighting device according to an embodiment of the present invention can be focused to the user or prevent the user's glare and blackout phenomenon.

1 is a conceptual diagram for explaining an operating state of a lighting device according to a first embodiment of the present invention.
2 is a conceptual diagram for explaining an installation state of a light emitting unit constituting a lighting device according to the present invention.
3 is a block diagram of a lighting device according to the present invention.
4 is a conceptual view illustrating another operating state of the lighting apparatus according to the first embodiment of the present invention.
5 is a conceptual diagram illustrating an operating state of a lighting device according to a second embodiment of the present invention.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

On the other hand, terms including an ordinal number such as a first or a second may be used to describe various elements, but the constituent elements are not limited by the terms, and the terms may refer to a constituent element from another constituent element It is used only for the purpose of discrimination.

1 is a conceptual diagram illustrating an operating state of a lighting apparatus according to a first embodiment of the present invention, FIG. 2 is a conceptual diagram illustrating an installation state of a light emitting unit constituting a lighting apparatus according to the present invention. 3 is a block diagram of a lighting apparatus according to the present invention.

The lighting device 1 related to the present invention includes a light emitting unit 20, an optical sensor 30, and a controller 40.

Hereinafter, each structural member common to the lighting apparatus according to the first and second embodiments will be described in detail with reference to the accompanying drawings.

The light emitting unit includes first to K th LED light sources 21 to 29 for irradiating light to a specific area of the illumination space. That is, the illumination space is partitioned into first to Nth (N> 1) regions S1 to S3 according to the on / off state of the first to Kth LED light sources.

For example, referring to FIG. 1, when the first LED light source 21 operates alone, the first area S1 is brightened based on the lighting space, in particular, the bottom surface S of the lighting space.

Similarly, when the second LED light source 22 operates alone, the second area S2 becomes bright with respect to the lighting space, in particular, the bottom surface S of the lighting space, and the third LED light source 23 is used alone. In operation, the third area S3 is brightened based on the lighting space, in particular, the bottom surface S of the lighting space.

In addition, when all of the first to third LED lights 21 to 23 operate, the first to third regions S1 to S3 are all brightened, and each LED light source 21 to 23 is a substrate and the substrate. It may include one or more LED elements mounted on.

In addition, the number K of LED light sources may be variously determined according to the area, characteristics, and required illuminance of the illumination space, and for convenience of description, three LED light sources 21 to 23 are illustrated in FIG. 1. 3 illustrates a case in which nine LED light sources 21 to 29 are installed, the present invention is not limited thereto, and the number K of LED light sources may be variously determined.

In addition, according to the on / off state of the first to Kth LED light sources, the illumination space may be partitioned into various areas from the first area to the Nth (N> 1) areas S1 to S3, and the number N of areas to be partitioned. May be configured equal to the number K of the LED light source, or may be configured larger than the number K of the LED light source.

That is, each region S1 to S3 of the illumination space may not be clearly distinguished and should be understood as a space arbitrarily partitioned according to the on / off state of the plurality of LED light sources 21 to 23.

On the other hand, the LED light source (21 to 23, 21 to 29) should be arranged to irradiate light to the respective areas (S1 to S3) of the illumination space.

1 and 2, the light emitting unit 20 may be installed on the ceiling of the lighting space. For this purpose, the ceiling W of the lighting space is recessed to have a predetermined depth from the ceiling surface. Can be placed in.

The recess may be provided with a recessed portion of the ceiling W, or may be provided as a separate frame. The frame 10 may be formed of a metal material to effectively dissipate heat generated from the LED light sources 21 to 23.

Referring to FIG. 2, the recess or frame 10 may include a bottom surface 11 and a plurality of side surfaces 12 to 19 (see FIG. 2) that are inclined at a predetermined angle with respect to the bottom surface 11. Can be. In one embodiment, each of the side surfaces 12 to 19 may be formed to be substantially orthogonal to the bottom surface 11, and may be inclined at an angle greater than 90 °.

At this time, any one of the LED light source 23 may be disposed on the bottom surface 11 of the recess or frame 10, the remaining LED light source on each side (12 to 19) of the recess or frame 10. 21, 22, 24 to 29 may be disposed respectively.

In this structure, when each LED light source 21 to 29 of the light emitting unit 20 is disposed in one recess or frame 10, each LED light source 21 to 29 has a different cut-off angle. In addition, the corresponding areas S1 to S3 of the illumination space facing each of the LED light sources 21 to 29 may be partitioned from the remaining areas according to on / off states of the corresponding LED light sources.

In addition, the number of shapes and sides of the recess or frame 10 may be variously determined in consideration of the characteristics and appearance quality of the illumination space, the number of LED light sources and the number of illumination space areas partitioned by the LED light source. It may also be variously determined.

On the other hand, the optical sensor 30 may be arranged in plurality at predetermined intervals of the ceiling (W) of the illumination space. Referring to FIG. 1, the optical sensor 30 may be divided into first to fourth optical sensors 31 to 34, and each of the optical sensors 31 to 34 may correspond to each area of the aforementioned illumination space ( S1 to S3) detects the user's location.

Hereinafter, a lighting apparatus according to a first embodiment will be described in detail with reference to the accompanying drawings.

1 and 3, the lighting device 1 according to the first embodiment of the present invention is a specific area S1 to S3 in an illumination space partitioned into first to Nth (N> 1) areas. ) And a light emitting unit 20 including first to K th LED light sources 21 to 23 for irradiating light and one or more lights for detecting a user position in each region S1 to S3 of the illumination space. When the sensors 31 to 34 and the position of the user are sensed, the on / off and illuminance of the corresponding LED light sources 21 to 23 for irradiating light to the corresponding areas S1, S2 or S3 of the illumination space where the user is located It includes a control unit 40 for controlling at least one of the.

Referring to FIG. 3, each of the LED light sources 21 to 24 may be provided with switches 51 to 54 for on / off control.

Specifically, the controller 40 operates the first LED light source 21 when the user's position is detected as the first area S1 or when the first LED light source 21 is in operation, the first LED light source 21. Increase the illuminance and activate the second LED 22 light source when the user's position is detected as the second area S2 or when the second LED light source 22 is in operation. Can increase the illuminance.

Accordingly, by detecting the user's position, the control unit 40 operates the LED light sources 21 to 23 for irradiating light to the areas S1 to S3 where the user's position is detected, or increases the illuminance of the corresponding LED light source. By doing so, it is possible to control the spot lighting to the user's location.

4 is a conceptual view illustrating another operating state of the lighting apparatus according to the first embodiment of the present invention.

If the user is detected in the second area S2 after the user is detected in the first area S1, the controller 40 determines that the user's position has moved, and operates the second LED light source 22, When the second LED light source 22 is in operation, the illuminance of the second LED light source 22 may be increased.

In addition, the controller 40 may turn off the first LED light source 21 irradiating light to the first area S1 where the user is not detected, or may reduce the illuminance of the first LED light source 21. .

Therefore, the control unit 40 detects the user's position movement and operates the corresponding LED light sources 21 to 23 for irradiating light to the changed user's position, or concentrates on the user's position by increasing the illuminance of the corresponding LED light source. It is possible to control the lighting can be made, thereby reducing the wasted power by illuminating the unnecessary area.

5 is a conceptual view for explaining an operating state of a lighting device according to a second embodiment of the present invention.

The lighting device 1 according to the second embodiment of the present invention is located on the ceiling of the lighting space and has a plurality of side surfaces 12 to 19 that are inclined at a predetermined angle with respect to the floor surface 11 and the floor surface 11. And a light emitting unit 20 including a frame 10 having a) and a plurality of LED light sources 21 to 29 disposed on the bottom surface 11 and the side surfaces 12 to 19 of the frame 10, respectively. One or more light sensors 31 to 34 and the frame for detecting a user position in each area S1 to S3 of the illumination space partitioned into a plurality of spaces according to the on / off states of the LED light sources 21 to 29. (10) When the user's position is detected in a specific area of the lighting space where the specific LED light source disposed therein can be seen, at least one of on / off and illuminance of the corresponding LED light source and other LED light sources to reduce glare of the user. It includes a control unit 40 for controlling the above.

The light emitting unit, the light sensor, and the frame constituting the lighting device according to the second embodiment are the same as each constituent member constituting the lighting device according to the first embodiment, and in the lighting device according to the second embodiment, the controller 40 The configuration of is different from the control section of the first embodiment.

As described above, the LED light has a very strong straightness of the LED light source, causing glare to the user when the LED light source is directly observed to the user or blackout phenomenon when severe. The angle at which the user can directly observe the LED light source is called a cut off angle, and the LED lighting mounted on the ceiling has a cut off angle fixed by the depth or shape of the recess or frame. The cut off angle is directly linked to the discomfort felt by the user.

On the other hand, when the cut-off angle is large, the area where the user can directly see the LED light source is increased, on the contrary, when the cut-off angle is small, the user can reduce the discomfort caused by glare, but light irradiated into the lighting space The amount of light decreases and the overall brightness decreases. That is, when the user's position is located outside the cut off angle, the user may not receive enough light.

In addition, the location of the user in the office space is constantly changing, when the LED light is directly exposed to the user may cause glare and severe blackout phenomenon.

To this end, the controller 40 detects a user's position in a specific area (eg, S1) of an illumination space in which a specific LED light source (eg, 21) disposed in the frame 10 is visible. The LED light source 21 may be turned off or the illuminance of the corresponding LED light source may be reduced, and such control may prevent glare or blackout from occurring according to the user's position.

In addition, the controller 40 may operate the other LED light sources 22 to 29 or increase the illuminance of the other LED light source to maintain the overall illuminance at a constant level.

Referring to FIG. 5, if it is detected that the user is in a position where the LED light sources cannot be observed, the control unit 40 operates all the LED light sources, and then may view a specific LED light source disposed inside the frame 10. When the user's location is detected in a specific area, the LED light source can be turned off or the illuminance of the LED light source can be reduced, and this control prevents glare or blackout depending on the user's location. Can be.

In addition, the controller may increase the illuminance of another LED light source, and may maintain the overall illuminance at a constant level through such control.

As described above, the lighting apparatus according to the embodiment of the present invention may control the on / off and illuminance of the LED light source based on the position and the position movement of the user in the lighting space.

In addition, the lighting device according to an embodiment of the present invention can be focused to the user or prevent the user's glare and blackout phenomenon.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

10: frame
20: light emitting unit
21: first LED light source
22: second LED light source
23: third LED light source
30: Light sensor
40:
51 to 54: switch

Claims (12)

An illumination space partitioned into first to Nth (N> 1) areas, comprising: a light emitting unit including first to K-th LED light sources for irradiating light to a specific area;
One or more photosensors for sensing a user's location in each area of the illumination space; And
And a control unit for controlling at least one of on / off and illuminance of a corresponding LED light source for irradiating light to a corresponding area of a lighting space where the user is located when the user's location is detected. The method of claim 1,
The control unit operates the first LED light source when the user's location is detected as the first area, or increases the illuminance of the first LED light source when the first LED light source is in operation. 2 to operate the LED light source or to increase the illuminance of the second LED light source when the second LED light source is in operation. 3. The method according to claim 1 or 2,
The control unit, when the user is detected in the second area after being detected in the first area, operating the second LED light source, or if the second LED light source is operating, characterized in that to increase the illuminance of the second LED light source Device. The method of claim 3, wherein
The control unit turns off the first LED light source, or reduces the illuminance of the first LED light source. The method of claim 1,
The light emitting unit is disposed in a recess provided in the ceiling of the lighting space,
And the recess includes a bottom surface and a plurality of side surfaces inclined at a predetermined angle with respect to the bottom surface. The method of claim 5, wherein
Any one LED light source is disposed on the bottom surface of the recess,
Illumination device, characterized in that the remaining LED light source is disposed on each side of the recess. The method according to claim 6,
LED light sources disposed on the bottom and each side of the recess is irradiated with light to each corresponding area of the illumination space. A frame positioned on the ceiling of the lighting space and having a plurality of side surfaces inclined at an angle with respect to the floor surface;
A light emitting unit including a plurality of LED light sources respectively disposed on a bottom surface and each side of the frame;
At least one optical sensor for sensing a user position in each area of the illumination space partitioned into a plurality of spaces according to the on / off state of each LED light source; And
When the user's position is detected in a specific area of the lighting space where the specific LED light source disposed inside the frame is visible, at least one or more of on / off and illuminance of the corresponding LED light source and other LED light sources to reduce glare of the user. Lighting device including a control unit for controlling the. The method of claim 8,
The controller may turn off the LED light source or reduce the illuminance of the LED light source when the user's position is detected in a specific area of the lighting space where the specific LED light source disposed inside the frame is visible. . The method of claim 9,
The control unit is characterized in that the other LED light source to operate or increase the illuminance of the other LED light source. The method of claim 8,
The control unit operates all light sources when it is detected that the user is in a position where the LED light sources cannot be observed, and when the user's position is detected in a specific area where the specific LED light source disposed inside the frame can be detected, the corresponding LED Illuminating device, characterized in that to turn off the light source or to reduce the illuminance of the corresponding LED light source. The method of claim 11,
The control unit is characterized in that for increasing the illuminance of the other LED light source.

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