JP2013137913A - Illumination apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination apparatus capable of easily controlling light distribution of an illumination fixture having LEDs.SOLUTION: An illumination fixture 1 is provided with three or more pieces of LED modules (LED module 7W, LED module 8N) in which a plurality of LED elements are arranged linearly. The LED modules each consist of two kinds of the LED modules 7W having a wide beam angle and the LED modules 8N having a narrow beam angle. These LED modules have a plurality of LED elements which are arranged linearly, installed so as to be mutually substantially parallel, and the LED modules of same kind are installed in positions of substantially line symmetry against a virtual reference line 9. A light source lighting device of the illumination fixture 1 illumination-controls with a substantially same light control rate all of the LED modules 7W, like one light source.

Description

  The present invention relates to a lighting device using an LED module as a light source.

  There is a technique related to changing the light distribution characteristics of a lighting fixture in a lighting fixture using a light emitting diode (hereinafter referred to as LED) (for example, Patent Literature 1 and Patent Literature 2).

  In Patent Document 1, as shown in FIG. 1, surface light emission can be obtained by arranging a plurality of light emitting diode elements according to the light distribution design, and the arrangement density is set according to the light distribution design. As a result, it is said that an instrument having a light distribution control element is almost unnecessary. Further, in Patent Document 1, as shown in FIG. 4, light emitting diode elements are arranged concentrically, and by controlling the light output with the light emitting diode elements arranged on each circumference as respective groups, It has been shown that the light distribution can be changed.

  Another technique is to generate illumination light directly below the luminaire and illumination light toward the wall (or ceiling) with separate LEDs, each of these separate LEDs on a different plane within the luminaire. It has also been proposed to change the light distribution by mounting and arranging, for example, dimming the light output of the LED irradiated in the wall direction.

  Further, in Patent Document 2, it is possible to replace and attach a light source unit having different light distribution characteristics to the lighting fixture, and change the light source unit to a desired light distribution by replacing the light source unit.

JP-A-11-162234 (FIGS. 1 and 4) JP 2010-199041 A (FIG. 2)

However, the apparatus of Patent Document 1 has a problem that the degree of freedom of change in light distribution is small because, for example, the illuminance reduction on the irradiated surface is increased even if the light distribution is changed from a lighting fixture designed for light distribution. It was.
Moreover, although the apparatus which attaches and arrange | positions separate LED on the different plane in a lighting fixture has a large freedom degree of light distribution change, the subject that workability | operativity falls by having to install each LED in a different plane has the subject. there were.
Further, the apparatus of Patent Document 2 has a problem that the light distribution cannot be changed unless it is replaced with another light source unit, and therefore cannot be easily changed.

  An object of this invention is to provide the illuminating device which can control the light distribution of the lighting fixture provided with LED easily.

The lighting device of the present invention is
In a lighting device equipped with a light source lighting device for lighting a light source,
A total of three or more line-shaped arrangement modules, which are LED modules in which a plurality of LED elements are arranged in a line,
The plurality of line arrangement modules are:
It is a combination of two types of modules, a narrow light distribution module having a predetermined beam angle and a wide light distribution module having a wider beam angle than the narrow light distribution LED module, and a combination other than odd numbers.
The narrow light distribution LED module and the wide light distribution module forming the plurality of line-shaped arrangement modules are:
The plurality of LED elements arranged in a line are installed so as to be substantially parallel to each other, and the lines of the LED modules having the same module type at substantially line symmetrical positions with respect to a virtual reference line A plurality of LED elements in the form of
The light source lighting device is:
As the light source, dimming control is performed on the narrow light distribution LED module and the wide light distribution module forming the plurality of line-shaped arrangement modules.

  According to the present invention, by using LED modules having different light distribution characteristics (directivity angles) in which LED elements are arranged in a line, the light distribution control or illumination atmosphere ( Environment) can be easily changed.

FIG. 3 is a schematic diagram illustrating the principle of light distribution control that is the basis of the first embodiment. FIG. 3 is a schematic diagram illustrating the principle of light distribution control that is the basis of the first embodiment. FIG. 3 is a circuit diagram of a light source lighting device 20 mounted on the lighting device 1 according to the first embodiment. The figure which has arrange | positioned three LED modules in the lighting fixture 1 of Embodiment 1. FIG. The figure which shows each example which has arrange | positioned several LED module to the lighting fixture 1 of Embodiment 1. FIG. FIG. 6 is another circuit diagram of the light source lighting device 20 according to the first embodiment.

Embodiment 1 FIG.
1 and 2 are diagrams for explaining the principle of light distribution control that is the basis of the first embodiment. 1 (a) and 2 (a), a lighting fixture 1 (lighting device) includes LED modules 7W and 8N in which a plurality of LED elements are arranged in a line. Fig.1 (a) and FIG.2 (a) are the states which looked up at the lighting fixture 1 installed in the ceiling from the bottom. The LED module 7W is a wide light distribution LED module with a wide beam angle. The LED module 8N is a narrow light distribution LED module whose beam angle is narrower than that of the LED module 7W. Here, for convenience of explanation, only two LED modules 7W and LED module 8N on the end side of the lighting fixture 1 are shown. The solid line represents the LED module 8N with a narrow beam, and the broken line represents the LED module 7W with a wide beam. FIG. 1B and FIG. 2B show the illuminance distribution in the cross-sectional direction of each LED module. FIG. 1B is an illuminance distribution of the AA cross section of FIG. 1A, and FIG. 2B is an illuminance distribution of the BB cross section of FIG. Here, it is assumed that the LED module 7W having a wide beam indicated by a broken line is arranged outside the lighting fixture 1, and the LED module 8N having a narrow beam indicated by a solid line is arranged inside the lighting fixture 1 (for example, a diagram described later). 5 (a)). Further, the peak values of the illuminance of the respective LED modules are assumed to be H1 and H2.

  In the luminaire 1, when the output H2 of the wide beam (the output of the LED module 7W) is decreased (that is, the light is dimmed), the light of the synthesized luminaire 1 is reduced in the outer H2, and the light distribution curve. Becomes a slim shape. Conversely, when the output H2 of the wide beam is increased or the output H1 of the narrow beam is decreased, the light distribution curve of the luminaire 1 becomes wide as shown in FIG. Thus, the light distribution of the lighting fixture 1 can be changed by changing the outputs of the two types of LED modules 7W and 8N without changing the component configuration of the lighting fixture 1.

  Next, an application example of the lighting fixture 1 that performs such light distribution control will be described. In the steady state, the wide beam output H2 and the narrow beam output H1 are set so as to obtain a predetermined light distribution. As the output H2 of the wide beam is dimmed (light output is lowered), the light distribution curve becomes a slim shape. However, since the illuminance directly under the luminaire 1 can be maintained considerably by H1, when the number of workers is reduced in the office or the like, it is possible to save energy while ensuring the necessary illuminance for the workers. In addition, when outside light is taken in during the daytime, etc., the dimming of the output H1 of the narrow beam reduces the artificial light by the luminaire 1 to the entire room and saves energy while reducing the visual environment (balance There is no loss of brightness. In the above description, the case where the respective LED modules 7W and 8N are dimmed has been described. However, in order to obtain a necessary visual environment, it is also useful to dim both LED modules. Further, instead of dimming, one LED module may be turned off.

  In this way, dimming control is performed by combining two types (two module types) of LED modules having beams (beam angles) having different characteristics, thereby realizing a wide light distribution that cannot be obtained independently. . The beam angle of the LED is desirably 70 to 90 degrees for a narrow beam, for example, and it is desirable to select a beam angle of 130 degrees or more for a wide beam from the viewpoint of light distribution controllability. Combination / selection of LED color temperature and rated luminous flux should be performed as necessary. In addition, using a milky white cover (sade) or the like below the luminaire 1, particularly in the direction directly below, is also effective in improving the visual environment. In addition, what is necessary is just to set the distance (pitch) between LED modules suitably from the light distribution characteristic calculated | required by the lighting fixture 1. FIG.

Next, the light source lighting device 20 will be described.
FIG. 3 shows a circuit diagram of the light source lighting device 20. In FIG. 3, components other than the AC power source 2 and the LED modules 7 </ b> W and 8 </ b> N are components of the light source lighting device 20. The light source lighting device 20 includes a DC power source 3, an LED lighting circuit 4, an LED lighting circuit 5, and a light distribution control unit 6. The DC power source 3 is a DC power source that generates a DC voltage from the AC voltage from the AC power source 2, and includes a full-wave rectifier circuit 31 and an output capacitor 32. The LED lighting circuit 4 and the LED lighting circuit 5 are circuits for supplying a predetermined current for lighting the LED, and a circuit configuration called a back converter is described here. The LED lighting circuit 4 lights the LED module 7W, and the LED lighting circuit 5 lights the LED module 8N. The LED lighting circuit 4 and the LED lighting circuit 5 include switching elements 41 and 51, coils 42 and 52, diodes 43 and 53, capacitors 44 and 54, and output control circuits 45 and 55 as shown in FIG. The output control circuits 45 and 55 are circuits for controlling the LED current to a predetermined value, and perform switching operations of the switching elements 41 and 51, and the like. The light distribution control unit 6 is a circuit that generates a signal for light distribution control, and generates a signal so that the output control circuits 45 and 55 supply desired power to the LEDs.

In the LED modules 7W and 8N, the LED 71W (LED element) constituting the module has a wide beam, and the LED 81N (LED element) has a narrow beam.
The LED module 7W (line arrangement module) has a plurality of LEDs 71W arranged in a line. The LED module 8N (line arrangement module) has a plurality of LEDs 81N arranged in a line.

  In the light source lighting device 20 configured as described above, the LED lighting circuits 4 and 5 are turned on by detecting the current values of the LEDs 71W and 81N (not shown) and passing a current of the set value. When the light distribution control unit 6 starts an operation for changing the light distribution by a remote controller, wall switch, or other means, the LED lighting circuits 4 and 5 set the LED modules 7W and 8N in advance in association with the light distribution state. The operation is performed to obtain the current value. For example, the LED 71W is lit with a dimming degree of 30%, and the LED 81 has a dimming degree of 90%. In this way, the light output is changed from the initial light distribution to a different light distribution.

  In the light source lighting device 20 of FIG. 3, a voltage obtained by full-wave rectification of the AC power source 2 is used as the DC power source. As the DC power source, the number of LED elements constituting the LED module, the power source voltage, or the harmonic component of the input current is used. A step-up converter or other power factor correction circuit may be used for the purpose of removing the noise. In addition, when a DC voltage is supplied as an input power source other than a commercial AC power source, the LED lighting circuit is used by directly using the DC voltage as an input of the LED lighting circuit or using a DC-DC converter. It may be used after being converted into a DC voltage value required for 4 and 5. The LED lighting circuits 4 and 5 are circuits called back converters in the above description. However, for example, a flyback converter can be used as long as it can supply a desired current to an LED as a load and can further perform dimming and extinguishing. Or a circuit called a step-up / down converter.

  Although the non-insulated current is supplied to the LED modules 7W and 8N in FIG. 3, an insulated current may be supplied to the LED modules 7W and 8N by using an insulating transformer in the converter unit. When it is necessary to light more LED modules of the light source, each LED module may be connected in series to the output side of the LED lighting circuit 4. Alternatively, each LED module may be connected in parallel to the output of the LED lighting circuit.

  FIG. 4 is a diagram showing an outline of the lighting apparatus 1. FIG. 4A shows a case where three LED modules are used. In FIG. 4A, the LED module 7W having a wide beam is disposed outside the lighting fixture 1, and the LED module 8N having a narrow beam is disposed inside. It is assumed that the illuminance by each LED module has characteristics as shown in FIG. Here, the mounting pitch between the LED modules 7W and 8N, the beam angles of the LED modules 7W and 8N, and the light output values of the LED elements are set so as to obtain the initial (steady state) light distribution characteristics of the lighting fixture 1. FIG. 4B is a diagram emphasized for easy understanding.

(1) In the lighting fixture 1 of FIG. 4, when the LED modules 7W and 8N are turned on in the all-light state, the light distribution characteristic of the initial setting is obtained.
(2) Next, when two LED modules 7W having a wide beam are simultaneously dimmed (dimmed) with the same (substantially the same) dimming degree in conjunction with each other, the light distribution is narrower than the original light distribution characteristic. Can be obtained. Therefore, in this case, it is possible to save energy suitable for use conditions such as when there are few workers using the lighting fixture 1 or during the daytime.
(3) At this time, the LED module 8N having a narrow beam can also be dimmed if necessary.

  FIG. 5 is a diagram illustrating an installation pattern of the LED modules 7 </ b> W and 8 </ b> N to the lighting fixture 1. (A) to (h) are shown as installation patterns. Hereinafter, (a) to (h) will be described. In the examples (a) to (h) described below, it is assumed that the LED modules on the outer sides are almost the same dimming degree so that the light distribution characteristics of the luminaire 1 are symmetric, or that both sides are turned off. Yes. Moreover, FIG. 5 assumes that in (a) to (h), the plurality of LED modules 7W are dimmed with the same dimming degree as one group. That is, the plurality of LED modules 7W adjust the light as if they were one light source. The same applies to the plurality of LED modules 8N. In the following description of (a) to (h), when “LED module 7W is dimmed”, when there are a plurality of LED modules 7W, the plurality of LED modules 7W are identical to each other as one light source. It means dimming with dimming degree. The same applies to the LED module 8N. Therefore, in (a) to (h), since the LED module 7W and the LED module 8N are symmetrically arranged with respect to a virtual reference line 9 described later, the illuminance of the lighting fixture 1 is controlled symmetrically. .

(Pattern a)
(A) is a case of FIG. In (a), the lighting fixture 1 which has arrange | positioned three LED modules substantially parallel to the line form is shown. In the first embodiment, the LED modules 7W and 8N include a plurality of LED elements 71N. 81W is arranged in a line, but if the modules are arranged substantially in parallel as shown in FIG. 5A, the LED elements are arranged in parallel. The same applies to (b) to (h).

(Pattern b)
(B) shows the luminaire 1 in which four LED modules are arranged in a line in the luminaire 1 and the LED modules are arranged substantially in parallel. Here, two LED modules 8N having a narrow beam are arranged in the center. Also in this case, since the light distribution characteristics of the lighting fixture 1 can be changed by dimming the two LED modules 7W as in the description of the operation of FIG. It is possible to save energy suitable for use conditions such as cases and daytime. At this time, the two LED modules 8N having a narrow beam can also be dimmed and used as necessary.

(Pattern c)
(C) shows the luminaire 1 in which five LED modules are arranged in a line on the luminaire 1 and each LED module is arranged substantially in parallel. Here, an LED module 7W having a wide beam is arranged on both outer sides of the luminaire 1, and an LED module 7W having another wide beam is also arranged in the center. In this case as well, the light distribution characteristics of the lighting fixture 1 can be changed by dimming the three LED modules 7W in the same manner as the description of the operation in FIG. It is possible to save energy suitable for use conditions such as when there are few or during the daytime. At this time, the two LED modules 8N having a narrow beam can also be dimmed and used as necessary.

(Pattern d)
(D) shows the luminaire 1 in which five LED modules are arranged in a line on the luminaire 1 and each LED module is arranged substantially in parallel. Here, LED modules 7W having a wide beam are arranged on both outer sides of the luminaire 1, and three on the center side are LED modules 8N having a narrow beam. In this case as well, the light distribution characteristics of the lighting fixture 1 can be changed by dimming the two LED modules 7W in the same manner as the description of the operation in FIG. It is possible to save energy suitable for use conditions such as when there are few or during the daytime. At this time, the three LED modules 8N having a narrow beam can also be dimmed and used as necessary.

(Pattern e)
(E) shows the luminaire 1 in which three LED modules are arranged in a line on the luminaire 1 and each LED module is arranged substantially in parallel. Here, an LED module 8N having a narrow beam is arranged on both outer sides of the luminaire 1, and the central one is a wide beam LED module 7W. Also in this case, the light distribution characteristic of the lighting fixture 1 can be changed by dimming one LED module 7W in the same manner as the description of the operation in FIG. It is possible to save energy suitable for use conditions such as when there are few or during the daytime. At this time, the two LED modules 8N having a narrow beam can also be dimmed and used as necessary. In (e), since the LED module 7W having a wide beam is arranged on the center side and the lighting of the LED module 7W is controlled, it is possible to obtain a light distribution characteristic in which the illuminance in the direct downward direction is controlled uniformly.

(Pattern f)
(F) shows the luminaire 1 in which four LED modules are arranged in a line on the luminaire 1 and the LED modules are arranged substantially in parallel. Here, LED modules 8N having a narrow beam are arranged on both outer sides of the lighting fixture 1, and the two in the center are LED modules 7W having a wide beam. In this case as well, the light distribution characteristics of the lighting fixture 1 can be changed by dimming the two LED modules 7W in the same manner as the description of the operation in FIG. It is possible to save energy suitable for use conditions such as when there are few or during the daytime. At this time, the two LED modules 8N having narrow beams can also be dimmed and used as necessary.
In (f), since the LED module 7W having a wide beam is arranged on the center side, it is possible to obtain a light distribution characteristic in which the illuminance in the direct downward direction is controlled uniformly.

(Pattern g)
(G) shows the luminaire 1 in which five LED modules are arranged in a line on the luminaire 1 and each LED module is arranged substantially in parallel. Here, LED modules 8N having a narrow beam are arranged on both outer sides of the lighting fixture 1, and LED modules 7W having a wide beam and LED modules 8N having a narrow beam are alternately arranged on the inner side. In this case as well, the light distribution characteristics of the lighting fixture can be changed by dimming the two LED modules 7W in the same manner as the description of the operation in FIG. 4, so that there are few workers using this lighting fixture. Energy saving suitable for use conditions such as in the daytime can be achieved. At this time, the three LED modules 8N having a narrow beam can also be dimmed and used as necessary. In this case (g), since the LED module 7W having a wide beam is also arranged on the center side, it is possible to obtain a light distribution characteristic in which the illuminance in the direct downward direction is controlled uniformly.

(Pattern h)
(H) shows the luminaire 1 in which five LED modules are arranged in a line on the luminaire 1 and each LED module is arranged substantially in parallel. Here, LED modules 8N having a narrow beam are arranged on both outer sides of the lighting fixture 1, and three LED modules 7W having a wide beam are arranged on the inner side. In this case as well, the light distribution characteristics of the lighting fixture 1 can be changed by dimming the three LED modules 7W in the same manner as the description of the operation in FIG. It is possible to save energy suitable for use conditions such as when there are few or during the daytime. At this time, the two LED modules 8N having a narrow beam can also be dimmed and used as necessary.
Also in (h), since three LED modules 7W having a wide beam are arranged on the center side, it is possible to obtain a light distribution characteristic in which the illuminance in the direct downward direction is controlled uniformly.

  In the above (a) to (h), the dimming control of the group of the wide beam LED module 7W or the group of the LED module 8N having the narrow beam is performed as one light source. The LED module 7W and the LED module 8N may be turned on at different dimming degrees (light output), or may be combined in a state where the LED module of one of the wide beam and the narrow beam is turned off. . Further, in the above description, an example in which up to five LED modules are arranged in a line is described. However, an arrangement in which six or more LED modules are arranged in a line is also applicable. Moreover, you may arrange | position to the center side other than the case where the LED module 7W which has the wide beam of the lighting fixture 1 is arrange | positioned outside.

  In (a) to (h) described so far, it is assumed that the LED modules on both outer sides have almost the same dimming degree so that the light distribution characteristics of the lighting fixture 1 are symmetric, or that both sides are turned off. It is also useful to dimm or turn off only one side or change the dimming degree between LED modules at symmetrical positions. When the lighting control of the LED module is performed in this manner, the light distribution characteristics of the lighting fixture 1 can be made asymmetric. Therefore, it can be used when the installation location of the lighting fixture 1 is a wall surface.

The arrangement of the LED modules of the lighting fixture 1 will be further described. The arrangement of the LED modules may be as follows. The luminaire 1 includes a plurality of three or more line-shaped arrangement modules that are LED modules in which a plurality of LED elements are arranged in a line. The line arrangement module is, for example, the LED module 7W and the LED module 8N in FIG. A plurality of line-shaped arrangement modules of three or more include a narrow light distribution module (LED module 8N) having a predetermined beam angle and a wide light distribution module (LED module having a wider beam angle than the narrow light distribution LED module). 7W) and a combination of two types of modules. In this case, an odd number of narrow light distribution modules and an odd number of wide light distribution modules are excluded. This is because the arrangement of the wide light distribution module and the narrow light distribution module on the lighting fixture 1 is substantially line symmetrical with respect to the virtual reference line 9 as shown in FIGS. It is assumed that LED modules having the same module type are arranged at the positions. When there are an even number of wide light distribution modules and narrow light distribution modules, as shown in FIGS. 5B and 5F, the virtual reference line 9 may be arranged so as not to be on the LED module. On the other hand, when there are an even number or an odd number of wide light distribution modules and narrow light distribution modules, the virtual reference line 9 is on the odd number of LED modules, and the wide light distribution module and the narrow light distribution module are symmetrically arranged on both sides thereof. Place.
However, when both the wide light distribution module and the narrow light distribution module are odd numbers, they cannot be arranged symmetrically with respect to the virtual reference line 9. For this reason, a combination of an odd number of narrow light distribution modules and an odd number of wide light distribution modules is excluded. The narrow light distribution LED module and the wide light distribution module constituting the plurality of line arrangement modules are installed in the lighting fixture such that the plurality of LED elements arranged in a line are substantially parallel to each other. At this time, as shown in FIG. 5A, the LED modules are arranged substantially in parallel in the direction of an arrow 101 that is perpendicular to the LED elements arranged in a line. Then, a plurality of LED elements (line-shaped LED elements) of LED modules having the same module type in a substantially line symmetry with respect to the virtual reference line 9 are positioned. FIGS. 5A to 5F are examples that satisfy the above conditions.

  In addition, LED modules having the same module type installed at substantially line-symmetrical positions with respect to the virtual reference line 9 have substantially the same beam angle. Referring to FIG. 5, in (a) to (h), the LED modules 7W or the LED modules 8N are arranged at positions symmetrical with respect to the virtual reference line 9. Means. The light source lighting device 20 performs dimming control with substantially the same dimming degree as described above as an example for the LED modules having the same module type installed at substantially line-symmetrical positions.

  Next, when a pair of LED modules 7W having a wide beam is provided, the configuration of the light source lighting device 20 that can be applied to, for example, (a), (b), (d), (f), and (g) of FIG. 5 will be described. . FIG. 6 is a circuit diagram of such a light source lighting device 20. In FIG. 6, the same parts as those in FIG. In FIG. 6, the light source lighting device 20 includes a DC power source 3, LED lighting circuits 4 and 5, and a light distribution control unit 6. The balancer 46 has a function of making the currents of the two LED modules substantially equal. The balancer 46 includes windings 46a and 46b, and wide beam LED modules 7a (W) and 7b (W) are connected to diodes 47a and 47b and capacitors 44a and 44b connected thereto, respectively. The detection resistor 48 is an LED current detection resistor for supplying a predetermined current to the LED module.

  In the apparatus configured as described above, a predetermined current flows through the LED modules 7a (W) and 7b (W) during all light or dimming, but one LED lighting circuit 4 is connected by the action of the balancer 46. While being used, substantially the same current can be supplied to the two LED modules 7a (W) and 7b (W). Therefore, since it can light with the difference of the output current between several LED modules, the symmetry of the light distribution characteristic of the lighting fixture 1 increases. Here, it has been described that the pair of LED modules 7a (W) and 7b (W) having a wide beam are lit using the balancer 46. However, when there is a pair of LED modules 8N having a narrow beam, for example, FIG. Of course, in b), (e), etc., a current can be supplied using the balancer 46. The detection resistor 48 as the current detection means of the LED lighting circuit is provided in the current path that flows through the LED module on one side, but it is also possible to provide this current detection means in the path through which the combined current of the two LED modules flows. .

  In the above description, an apparatus capable of changing the light distribution characteristics by controlling the light output of a plurality of LED modules arranged in the luminaire 1 to maintain energy saving and a good visual environment has been described. Different things may be arranged in the luminaire 1. That is, all or part of the LED module 8N of the narrow light distribution module has a predetermined first color temperature, and all or part of the LED module 7W of the wide light distribution module has a second color different from the first color temperature. Let it be the color temperature. In such a configuration, for example, at night when the number of workers is small, the light distribution characteristics of the lighting fixture 1 are changed so as to be narrower than when LED modules having two types of color temperatures are lit in the full light state. The controlled color temperature can be controlled to be lower than that in all light. In this way, not only the energy saving effect by changing the light distribution characteristics, but also the color temperature of the atmosphere adapted to the nighttime, the worker's visual environment can be maintained more comfortably.

  According to the lighting fixture 1 of the above embodiment, means such as combining LEDs having different light distribution characteristics (directivity angles), LEDs having different light distribution characteristics and different rated light outputs, or LEDs having different color temperatures. By using these LEDs to control the light output, it is possible to change the light distribution or lighting atmosphere (environment) of the lighting fixture.

  DESCRIPTION OF SYMBOLS 1 Lighting fixture, 2 AC power supply, 3 DC power supply, 31 Full wave rectifier circuit, 32 Output capacitor, 41,51 Switching element, 42,52 Coil, 43,53 Diode, 44,54 Capacitor, 45,55 Output control circuit, 46 balancer, 4 LED lighting circuit, 5 LED lighting circuit, 6 light distribution control unit, 7W LED module, 8N LED module, 9 virtual reference line, 20 light source lighting device.

Claims (6)

In a lighting device equipped with a light source lighting device for lighting a light source,
A total of three or more line-shaped arrangement modules, which are LED modules in which a plurality of LED elements are arranged in a line,
The plurality of line arrangement modules are:
It is a combination of two types of modules, a narrow light distribution module having a predetermined beam angle and a wide light distribution module having a wider beam angle than the narrow light distribution LED module, and a combination other than odd numbers.
The narrow light distribution LED module and the wide light distribution module forming the plurality of line-shaped arrangement modules are:
The plurality of LED elements arranged in a line are installed so as to be substantially parallel to each other, and the lines of the LED modules having the same module type at substantially line symmetrical positions with respect to a virtual reference line A plurality of LED elements in the form of
The light source lighting device is:
Dimming control of the narrow light distribution LED module and the wide light distribution module forming the plurality of line arrangement modules as the light source is performed. The light source lighting device is:
The lighting device according to claim 1, wherein dimming control is performed on all the wide light distribution LED modules with substantially the same dimming degree. LED modules having the same module type installed at substantially line symmetrical positions with respect to the virtual reference line,
The illumination device according to claim 1, wherein the illumination devices have substantially the same beam angle. The light source lighting device is:
The dimming control is performed with substantially the same dimming degree for LED modules having the same module type installed at a substantially line symmetrical position with respect to the virtual reference line. The illuminating device in any one of 1-3. The narrow light distribution module has a predetermined first color temperature;
The lighting device according to claim 1, wherein the wide light distribution module has a second color temperature different from the first color temperature. The light source lighting device is:
When it has at least one of the two wide light distribution LED modules and the two narrow light distribution LED modules, it is a balancer for lighting the two LED modules and has two windings. The lighting device according to claim 1, further comprising a balancer, wherein the two LED modules are turned on via the two windings.

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