JP2011171257A - Illuminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illuminating device capable of reducing variations in light color by correcting the light color of light radiated from a light source section having an LED as a light source. <P>SOLUTION: An illuminating device 1 comprising a case body 2, a light source section 3 having an LED 8 accommodated within the case body 2 as a light source, and a reflecting surface 4 having a chromatic color arranged so as to oppose the light source section 3, wherein the relative distance and a relative angle between the light source section 3 and the reflecting surface 4 can be changed by operating the light source section 3 and the reflecting surface 4 in order to correct the light color. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a luminaire using an LED (light emitting diode) as a light source.

  Recently, LEDs have been used as light sources for general illumination indoors or outdoors. However, there are individual differences in LEDs, and there are large variations in individual emission colors due to variations in the wavelength of the LED chip, variations in the amount of phosphor contained in the phosphor layer that seals the LED chip, and the like. When a plurality of such LEDs are arranged on a substrate and used as a light source for illumination, there arises a problem that variation in light color occurs in the entire light source due to variation in light color.

  Conventionally, in an illuminating device including a plurality of LEDs, in order to reduce variation in light color, a configuration in which light emitted from LEDs is not directly irradiated but is reflected by a reflecting plate and indirectly irradiated is proposed (for example, Patent Document 1).

JP 2008-287994 A

  However, the technique disclosed in Patent Document 1 is intended to alleviate variations in light color of individual LEDs in a single illumination device, and does not actively correct variations in light color as a whole illumination device. .

  For example, as shown in FIG. 9, a plurality of the same type of lighting fixtures may be installed in the same lighting space. FIG. 9 shows an example in which a plurality of brackets B are installed on the wall surface as lighting fixtures. The bracket B uses an LED as a light source, and the light emitted from the LED mainly illuminates the upper part of the wall surface and indirectly. It is intended to obtain a desired lighting effect by illumination.

  In such a case, when a plurality of lighting devices as shown in Patent Document 1 are installed, a difference in the light color of each lighting device may occur to the extent that it can be visually recognized. This problem is particularly serious in lighting applications that use a light bulb color as the emission color.

  The present invention has been made in view of the above problems, and provides a lighting apparatus capable of correcting the light color of light emitted from a light source unit using an LED as a light source to reduce variation in light color. Objective.

The luminaire according to claim 1 includes a case main body, a light source unit that uses an LED housed in the case main body as a light source, and a chromatic color reflecting surface disposed to face the light source unit. And a relative distance between the light source unit and the reflecting surface is changeable.
In the present invention and the following inventions, the technical meaning and interpretation of terms are as follows unless otherwise specified.

  As the LED, a surface mount type LED package or an LED chip directly mounted on a substrate can be applied. Further, a bullet-type LED may be used, and the mounting method and format are not particularly limited. Furthermore, there is no particular limitation on the number of LEDs.

As the light source unit, for example, one having the same size and outer shape as an existing straight tube fluorescent lamp can be applied, but the light source unit is not limited to this. Various forms in which LEDs are mounted on a substrate can be applied.
For example, red or yellow colored colors can be applied to the reflecting surface. However, as long as the light color can be corrected, other colors can be applied.

  The relative distance between the light source unit and the reflection surface may be changed by operating either the light source unit or the reflection surface. Moreover, it does not prevent it from operating and moving both.

  Although it is suitable to apply a lighting fixture to the lighting fixture of a bracket or indirect lighting, it is not limited to this, It is possible to apply to various lighting fixtures which use LED used indoors or outdoors. .

  The lighting fixture according to claim 2 includes a case main body, a light source unit that uses an LED housed in the case main body as a light source, and a chromatic color reflecting surface disposed so as to face the light source unit. And the relative angle between the light source unit and the reflecting surface can be changed.

  The relative angle between the light source unit and the reflecting surface may be changed by operating either the light source unit or the reflecting surface. Moreover, it does not prevent it from operating and changing both.

  The lighting fixture according to claim 3 is the lighting fixture according to claim 1 or 2, wherein the change of the relative distance or the relative angle is performed by operating a light source unit. .

  The lighting fixture according to claim 4 is the lighting fixture according to claim 1 or 2, wherein the relative distance or the relative angle is changed by operating a reflecting surface. .

  ADVANTAGE OF THE INVENTION According to this invention, the light fixture which correct | amends the light color of the light radiated | emitted from the light source part which uses LED as a light source, and can reduce the dispersion | variation in light color can be provided.

It is a perspective view which removes a cover member in the lighting fixture which concerns on the 1st Embodiment of this invention, and shows from an upper side. It is a perspective view shown from the lower side in the same lighting fixture. It is a perspective view which shows a part of the light source part. It is sectional drawing which shows the light source part. It is a side view which shows the same lighting fixture. It is side sectional drawing which shows the lighting fixture. It is an xy chromaticity diagram schematically showing the same operation. It is a sectional side view which shows the lighting fixture which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the example of the installation state of a lighting fixture.

  Hereinafter, a lighting apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIG.1 and FIG.2, the lighting fixture 1 is the bracket demonstrated in above-mentioned FIG. 9, is installed in a wall surface and illuminates mainly the upper direction of a wall surface, and obtains the illumination effect by indirect illumination.
The luminaire 1 includes a case main body 2, a light source unit 3 accommodated in the case main body 2, and a reflector 5 having a reflective surface 4 facing the light source unit 3.

  The case body 2 is formed of a cold-rolled steel plate and has a substantially horizontally long rectangular parallelepiped shape. A horizontally elongated main irradiation opening 21 is formed on the upper surface side, and a sub irradiation opening 22 is formed on the lower surface side. In addition, socket bases 7 having sockets are provided on both sides in the case body 2 corresponding to the main irradiation opening 21. A cover member 9 made of a milky white acrylic material having translucency covering the main irradiation opening 21 is attached to the upper surface side.

  As shown in FIGS. 3 and 4, the light source unit 3 uses an LED as a light source and has the same size and outer shape as an existing straight tube fluorescent lamp. Specifically, it has the same size and outer shape as a 40 W straight tube fluorescent lamp. And this light source part 3 can move now with respect to the reflective surface 4 of the reflector 5 so that it may mention later (refer FIG.5 and FIG.6).

  The light source unit 3 has an elongated cylindrical shape, and is provided with a base 31 at both ends. A terminal pin 32 connected to the socket of the socket base 7 protrudes and is attached to the base 31. The light source unit 3 is formed by upper and lower cover members 33 and 34 having a semi-cylindrical cross section.

  A semi-cylindrical heat radiating member 35 is disposed inside the lower cover member. The heat dissipating member 35 is made of metal such as aluminum, and is mounted and mounted on the semi-cylindrical opening side so that the back surface of the long rectangular substrate 36 on which the plurality of LEDs 8 are mounted is in close contact. It has been.

  The substrate 36 is made of a flat plate of glass epoxy resin that is an insulating material, and a wiring pattern made of copper foil is applied on the surface side. Further, a resist layer is appropriately applied. As the substrate 36, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity and excellent heat dissipation, such as aluminum, can be applied.

  In this embodiment, the LED 8 uses a surface-mount type LED package, which is roughly an LED chip disposed in a main body formed of ceramics, and an epoxy resin or silicone that seals the LED chip. It is comprised from translucent resin for molds, such as resin.

The LED chip is a blue LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light, a yellow phosphor that emits yellow light that is complementary to blue light is used. Yes.

  In addition, LED may be made to mount an LED chip directly on the board | substrate 36, and you may make it mount a bullet-type LED, and a mounting system and a format are not specifically limited. Here, a plurality of LEDs 8 are mounted linearly along the longitudinal direction of the substrate 36.

  Further, a lighting circuit 37 is provided on the back side of the substrate 36, that is, on the inner side of the heat radiating member 35 in the semicylindrical shape. The lighting circuit 37 controls the lighting of the LED 8, and components such as a capacitor and a transistor as a switching element are mounted on the circuit board. Further, a lead wire (not shown) is led out from the lighting circuit 37 and is electrically connected to the substrate 36 on which the LED 8 is mounted and the terminal pin 32 of the base 31. The lighting circuit 37 may be provided in the case body 2 of the lighting fixture 1.

  The upper cover member 33 is formed of a light-transmitting material, and a semi-cylindrical opening is attached to the opening of the lower cover member 34, so that the surface side of the substrate 36 on which the LED 8 is mounted. To cover.

  As shown in FIGS. 1, 5, and 6, the reflector 5 has an elongated rectangular shape, and is provided on the inner wall of the case body 2 facing the light source unit 3 along the longitudinal direction. The reflector 5 is made of synthetic resin, and a chromatic red resin tape is bonded to the surface forming the reflecting surface 4. Therefore, the red reflecting surface 4 is disposed in the longitudinal direction so as to face the light source unit 3.

  The reflective surface 4 may be formed by applying a chromatic color coating on the surface of the reflector 5 or using a chromatic color reflector 5 as a material. Furthermore, the color of the reflecting surface 4 is not limited to red, and may be yellow, for example.

  The moving mechanism of the light source unit 3 will be described with reference to FIGS. The socket bases 7 provided on both sides of the case body 2 are fitted to the rail member 71 attached to the bottom wall of the case body 2 by frictional engagement so as to be slidable in the lateral direction (shown by arrows in FIG. 6). ing. An operation knob 72 is provided on the back side of the socket base 7. On the other hand, as shown in FIG. 5, a slide hole 73 is formed on the side wall of the case body 2 in the lateral direction so that the operation knob 72 can be slid. Therefore, by sliding the operation knob 72 with the light source unit 3 mounted on the socket, the light source unit 3 can be moved with respect to the reflecting surface 4 and disposed at a predetermined position.

  When the socket base 7 is slid and moved with respect to the rail member 71, the socket base 7 may be configured to be stopped and arranged at a plurality of predetermined positions by a snap action.

Next, the operation of the present embodiment will be described mainly with reference to FIGS. As described above, the LED has a variation in the light color. In particular, when a plurality of the same type of luminaires are installed in the same illumination space, a problem that the difference in the light color is noticeable occurs. For example, in the xy chromaticity diagram shown in FIG. 7, even if the lighting fixture is designed with the target of the chromaticity value in the square range S, the chromaticity values of the respective lighting fixtures vary as indicated by points a to f. In other words, a phenomenon occurs in which variations occur at a level where the difference in light color can be visually recognized.
Therefore, in order to solve this problem, it is necessary to correct the chromaticity values of the luminaires at points c to f out of the target range S so as to be within the target range S.
Therefore, this correction is performed by moving the light source unit 3 and adjusting and changing the relative distance from the reflecting surface 5.

  5 and 6, the operation knob 72 is slid, the light source unit 3 is moved, and the distance from the reflecting surface 5 is adjusted. In other words, the light emitted from the light source unit 3 is upward light that is mainly transmitted from the main irradiation opening 21 through the cover member 9 and irradiated to the outside. This light becomes white direct light from the light source unit 4 and reddish white reflected light reflected by the reflecting surface 4. In the state of light color in which these lights are mixed, for example, the wall surface is irradiated.

  Therefore, it is possible to adjust and correct the light color by changing the ratio of the reflected light in the irradiation light. By moving the light source unit 3 closer to the reflecting surface 4, the ratio of reflected light increases, and by moving the light source unit 3 away from the reflecting surface 4, the ratio of reflected light decreases.

By adjusting the distance between the light source unit 3 and the reflecting surface 4, it is possible to finely correct the light color. For example, the chromaticity of the luminaire at points c to f outside the region of the target range S. The value can be corrected to fall within the target range S.
The reflective surface 4 is housed in the case body 2 and is difficult to see in appearance, so that even if it is tinged with a red color, it does not give a sense of incongruity.
Furthermore, the correction of the light color as described above can be applied not only when a plurality of the same type of lighting fixtures are installed in the same illumination space, but also when necessary.

  As described above, according to the present embodiment, it is possible to provide the luminaire 1 capable of correcting the light color of the light emitted from the light source unit 3 using the LED 8 as the light source and reducing the variation in the light color.

  Next, the lighting fixture which concerns on the 2nd Embodiment of this invention is demonstrated with reference to FIG. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent part, and the overlapping description is abbreviate | omitted.

In this embodiment, the light source 3 is adjusted by operating the reflecting surface 4 so as to change the angle. One end side (upper side) of the reflector 5 is pivotally supported by the case main body 2 and is rotatable. In addition, a mechanism capable of stopping at a predetermined angle is provided.
Therefore, the reflector 5 (reflecting surface 4) can be rotated to adjust the angle with the light source unit 3, thereby adjusting the ratio of the reflected light and correcting the light color.
As described above, according to the present embodiment, the same effects as those of the first embodiment can be obtained.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention. The relative distance or relative angle between the light source unit and the reflecting surface may be changed by operating either the light source unit or the reflecting surface, or may be changed by operating both. For example, the light source unit may be rotated to change the irradiation angle with respect to the reflecting surface. In short, any configuration that can correct the light color by adjusting the ratio of the reflected light may be used. Furthermore, the lighting circuit that controls the lighting of the LED by supplying power to the light source unit may be accommodated in the case main body of the lighting fixture.

  The lighting fixture of the present invention is preferably applied to the bracket described in the above embodiment, but is not limited thereto, and is applied to various lighting fixtures using LEDs used indoors or outdoors as a light source. be able to. Furthermore, the direction of light distribution is not particularly limited.

DESCRIPTION OF SYMBOLS 1 ... Lighting fixture (bracket), 2 ... Case main body, 3 ... Light source part,
4 ... reflective surface, 5 ... reflector, 8 ... LED

Claims (4)

The case body,
A light source unit that uses an LED contained in the case body as a light source;
A chromatic color reflecting surface disposed to face the light source unit,
A lighting fixture, wherein a relative distance between the light source unit and the reflecting surface is changeable. The case body,
A light source unit that uses an LED housed in the case body as a light source;
A chromatic color reflecting surface disposed to face the light source unit,
A lighting apparatus, wherein a relative angle between the light source unit and the reflecting surface is changeable.   The lighting apparatus according to claim 1, wherein the relative distance or the relative angle is changed by operating a light source unit.   The lighting device according to claim 1 or 2, wherein the relative distance or the relative angle is changed by operating a reflecting surface.

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