JP5595144B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture. The present invention particularly relates to LED lighting fixtures.

  In LED lighting fixtures, a method of changing and using a lens or a reflector as a means for obtaining a light distribution characteristic suitable for the purpose is widely known (for example, see Patent Documents 1 to 3).

JP 2010-73627 A JP 2009-9826 A JP 2005-317557 A

  However, when the light distribution is changed by replacing the lens or the reflector, there is a problem in that it is necessary to newly procure a replacement part after installing the lighting fixture on site. Further, in the case of replacement of parts, there has been a problem that the change in light distribution is not continuous and it is difficult to realize an irradiation image requested by the user.

  An object of the present invention is, for example, to continuously change the light distribution (beam angle) of a lighting fixture while confirming the appearance of an exhibition or the like irradiated after installation of the fixture without replacing parts or the like.

A lighting apparatus according to one aspect of the present invention includes:
At least two types of light distribution members having different light distribution characteristics for each type;
A plurality of light sources each including at least one corresponding light source for each of the at least two types of light distribution members, the light distribution of which is controlled by the corresponding type of light distribution member;
The plurality of light sources includes a light control unit that performs light control individually for each type of the corresponding light distribution member.

  According to one aspect of the present invention, the dimming unit of the luminaire individually adjusts the plurality of light sources, the light distributions of which are controlled by the corresponding light distribution members, for each corresponding light distribution member type. By illuminating, it is possible to continuously change the light distribution (beam angle) of the lighting fixture while confirming the appearance of the exhibits etc. irradiated after the fixture installation without replacing parts.

FIG. 3 is a perspective view of the lighting apparatus according to Embodiment 1. FIG. 3 is an exploded perspective view of the lighting apparatus according to Embodiment 1. FIG. 2 is a plan view of the LED module of the lighting fixture according to Embodiment 1. FIG. 3 is a circuit block diagram of the lighting fixture according to Embodiment 1. The elements on larger scale of the power supply case of the lighting fixture which concerns on Embodiment 1. FIG. The light distribution curve figure which shows the example of the light distribution characteristic of the lighting fixture which concerns on Embodiment 1. FIG. 6 is a graph showing the relationship between the slide volume of the lighting fixture according to Embodiment 1 and the output current. FIG. 6 is a perspective view of a lighting fixture according to a first modification of the first embodiment. FIG. 10 is a perspective view of a lighting fixture according to a second modification of the first embodiment. FIG. 10 is a perspective view of a lighting fixture according to a third modification of the first embodiment. (A) The perspective view of the lighting fixture which concerns on the 4th modification of Embodiment 1, (b) The elements on larger scale of the power supply case of a lighting fixture. FIG. 6 is a circuit block diagram of a lighting fixture according to Embodiment 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 11 according to the present embodiment. FIG. 2 is an exploded perspective view of the lighting fixture 11.

  1 and 2, the luminaire 11 includes a power supply case 18 in which a power supply circuit is built in, and a lamp 12 attached to the power supply case 18 via an arm portion 25.

  The lamp 12 includes an LED module 13 mounted inside, a plurality of narrow-angle lenses 15 and wide-angle lenses 16 mounted on the light emitting surface of the LED module 13, and the narrow-angle lenses 15 and wide-angle lenses 16. And a lens cover 17 that is fixed inside the lens 12.

  A plurality of LEDs 14 are mounted on the LED module 13. A narrow-angle circuit 23 that connects some of the LEDs 14 and a wide-angle circuit 24 that connects the remaining LEDs 14 are configured. That is, in the LED module 13, two independent closed circuits are configured. Each LED 14 is arranged in one-to-one correspondence with either the narrow-angle lens 15 or the wide-angle lens 16 having a light distribution characteristic different from that of the narrow-angle lens 15. The LED module 13 is fixed to the lamp 12 by a lens cover 17 that fixes these lenses.

  FIG. 3 is a plan view of the LED module 13 of the luminaire 11.

  In FIG. 3, the LED module 13 has two conduction circuits (a narrow angle circuit 23 and a wide angle circuit 24) on the substrate 20. Each circuit includes a connector 21, a pattern 22, and an LED 14, and can be controlled independently. Here, the LED 14 on the narrow-angle circuit 23 side is referred to as a narrow-angle LED 14a, and the LED 14 on the wide-angle circuit 24 side is referred to as a wide-angle LED 14b.

  Regarding the relationship between the two types of lenses (the narrow-angle lens 15 and the wide-angle lens 16) and the LEDs 14 mounted on the two conduction circuits (the narrow-angle circuit 23 and the wide-angle circuit 24), they correspond to the LEDs 14 on the same circuit. All lenses arranged at the same position are of the same type. That is, the LED 14 (narrow-angle LED 14a) mounted on the narrow-angle circuit 23 corresponds to the narrow-angle lens 15, and the LED 14 (wide-angle LED 14b) mounted on the wide-angle circuit 24 corresponds to the wide-angle lens 16.

  In the present embodiment, the LED module 13 includes four narrow-angle LEDs 14a and three wide-angle LEDs 14b, but the LED module 13 includes a different number of narrow-angle LEDs 14a and wide-angle LEDs 14b. You may have. Further, the narrow-angle LED 14a and the wide-angle LED 14b are the LEDs 14 having the same color temperature, but may be the LEDs 14 having different color temperatures. For example, the narrow-angle LED 14a can be a 5000K (Kelvin) LED 14 and the wide-angle LED 14b can be a 3000K LED 14.

  1 and 2, the power supply case 18 includes a DC power supply circuit capable of two-system output current control for lighting the LED 14 therein.

  FIG. 4 is a circuit block diagram of the luminaire 11.

  In FIG. 4, the luminaire 11 is built in a power supply case 18, a power supply circuit 30 (lighting device) to which a commercial AC power supply AC is supplied, and an LED module that is lit by inputting a direct current output from the power supply circuit 30. 13.

  As described above, the LED module 13 includes the narrow angle circuit 23 and the wide angle circuit 24.

  The power supply circuit 30 includes a rectifying / smoothing circuit 31, a narrow-angle output constant current circuit 32, a wide-angle output constant current circuit 33, a control circuit 34 (for example, a microcomputer), and an adjustment unit 19. The rectifying / smoothing circuit 31 full-wave rectifies the commercial AC power supply AC by the diode bridge 35 and smoothes it by the smoothing capacitor 36 to obtain a DC voltage. The narrow-angle output constant current circuit 32 is connected to the rectifying and smoothing circuit 31 and the narrow-angle circuit 23 of the LED module 13. The wide-angle output constant current circuit 33 is connected to the rectifying / smoothing circuit 31 and the wide-angle circuit 24 of the LED module 13. The control circuit 34 adjusts the output currents of the wide-angle output constant current circuit 33 and the narrow-angle output constant current circuit 32. The adjustment unit 19 sets an adjustment value of the control circuit 34.

  The wide-angle output constant current circuit 33 includes a constant current control FET 37, a resistor 38, a choke coil 39, a transistor 40, a diode 41, a current detection resistor 42, a constant current control circuit 43, and an electrolytic capacitor 44. The drain terminal of the constant current control FET 37 is connected to the high potential side of the rectifying and smoothing circuit 31. The resistor 38 is connected between the drain terminal and the gate terminal of the FET 37. One end of the choke coil 39 is connected to the source terminal of the FET 37. The transistor 40 has a collector terminal connected to the gate terminal of the FET 37 and an emitter terminal connected to the low potential side of the rectifying and smoothing circuit 31. The diode 41 has a cathode terminal connected to the source terminal of the FET 37 and an anode terminal connected to the low potential side of the rectifying and smoothing circuit 31. One end of the current detection resistor 42 is connected to the low potential side of the electrolytic capacitor 44, and the other end is connected to the wide-angle circuit 24 of the LED module 13. The constant current control circuit 43 is connected to the other end of the current detection resistor 42, the base terminal of the transistor 40, and the control circuit 34. The electrolytic capacitor 44 has a positive electrode connected to the source terminal of the FET 37 via the choke coil 39 and a negative electrode connected to the low potential side of the rectifying and smoothing circuit 31.

  The constant current control circuit 43 of the wide-angle output constant current circuit 33 detects the current flowing through the current detection resistor 42 and controls the switching of the transistor 40 so that the current flowing through the current detection resistor 42 becomes a constant current. The switching of the constant current control FET 37 is controlled. Thus, the constant current control circuit 43 causes the wide-angle output constant-current circuit 33 to supply a substantially constant DC current to the wide-angle LED 14b.

  The constant current control circuit 43 controls the switching of the transistor 40 and the constant current control FET 37 so that the current flowing through the current detection resistor 42 becomes the current value adjusted by the control circuit 34. Therefore, when the control circuit 34 adjusts the current value flowing through the current detection resistor 42 to different current values such as 100 mA (milliampere) and 300 mA, the current flowing through the wide-angle LED 14b is adjusted, and the amount of light emitted from the wide-angle LED 14b is reduced. Change.

  Since the configuration and operation of the narrow-angle output constant current circuit 32 are the same as those of the wide-angle output constant current circuit 33, the description thereof is omitted.

  The adjustment unit 19 includes two slide volumes (variable resistors). One is a wide-angle slide volume 19b for setting an adjustment value for adjusting the output current of the wide-angle output constant current circuit 33, and the other is for adjusting the output current of the narrow-angle output constant current circuit 32. This is a narrow-angle slide volume 19a for setting an adjustment value.

  FIG. 5 is a partially enlarged view of the power supply case 18 of the luminaire 11.

  1 and 5, a wide-angle slide volume 19b and a narrow-angle slide volume 19a are provided so as to protrude from the side surface of the power supply case 18, and two DC power supply circuits (wide-angle output constant current circuit 33). And the output current of the narrow-angle output constant current circuit 32) can be controlled independently by each slide volume. When the wide-angle slide volume 19b is slid in the A direction, the control circuit 34 adjusts the output current of the wide-angle output constant current circuit 33 to be small. When the narrow-angle slide volume 19a is slid in the A direction, the control circuit 34 adjusts the output current of the narrow-angle output constant current circuit 32 so as to increase.

  Since the wide-angle slide volume 19b and the narrow-angle slide volume 19a are arranged in parallel to each other, it is easy to slide the wide-angle slide volume 19b and the narrow-angle slide volume 19a at the same time. In the present embodiment, when the wide-angle slide volume 19b and the narrow-angle slide volume 19a are adjusted to the “wide-angle” scale, the output current of the wide-angle output constant current circuit 33 is the maximum value, and the narrow-angle output constant current circuit 32 The output current is adjusted to a minimum value (for example, 0 A). When adjusted to the “intermediate” scale, both the output current of the wide-angle output constant current circuit 33 and the output current of the narrow-angle output constant current circuit 32 are adjusted to an intermediate value between the maximum value and the minimum value. When adjusted to the “narrow angle” scale, the output current of the wide-angle output constant current circuit 33 is adjusted to the minimum value (for example, 0 A), and the output current of the narrow-angle output constant current circuit 32 is adjusted to the maximum value. Thereby, the light distribution angle corresponding to the display of a scale can be obtained.

  The adjustment unit 19 may be replaced with one having a function of receiving a control signal from an external controller in a wired or wireless manner. In this case, the adjustment unit 19 receives a control signal for instructing the light distribution angle and the dimming degree by, for example, a duty ratio of PWM (pulse width modulation). The control circuit 34 adjusts the output current of the wide-angle output constant current circuit 33 and the output current of the narrow-angle output constant current circuit 32 according to the duty ratio of the control signal received by the adjustment unit 19.

  As mentioned above, in this Embodiment, the lighting fixture 11 is provided with two types of light distribution members from which a light distribution characteristic (especially light distribution angle) differs for every kind. Specifically, the luminaire 11 includes a first type of light distribution member (wide-angle lens 16) and a second type of light distribution member (narrow-angle lens) having a light distribution angle narrower than that of the first type of light distribution member. 15). In addition, the lighting fixture 11 may be provided with a reflector as a light distribution member. The luminaire 11 may include three or more types of light distribution members.

  Moreover, the luminaire 11 includes at least one corresponding light source for each type of light distribution member, and includes a plurality of light sources whose light distribution is controlled by the corresponding type of light distribution member. Specifically, the luminaire 11 includes a plurality of LEDs (wide-angle LEDs 14b) corresponding to the first type of light distribution member (wide-angle lens 16) and a second type of light-distribution member (narrow-angle lens 15). And a plurality of LEDs (narrow angle LEDs 14a).

  Moreover, the lighting fixture 11 is equipped with the light control part (power supply circuit 30) which light-controls several light sources separately for every kind of corresponding light distribution member. The light control unit is a light output of the light source corresponding to one of the first-type light distribution member and the second-type light distribution member (the narrow-angle LED 14a corresponding to the narrow-angle lens 15). Is increased or decreased, the light output of the light source corresponding to the other light distribution member (the wide-angle LED 14b corresponding to the wide-angle lens 16) is decreased or maintained. On the other hand, in the case where the light output of the light source corresponding to one light distribution member (the narrow-angle LED 14a corresponding to the narrow-angle lens 15) is reduced, the light control unit corresponds to the other light distribution member. The light output of the wide-angle LED 14b) corresponding to the lens 16 is increased or maintained.

  For each type of light distribution member, the light control unit is connected to the corresponding LED 14 and supplies a power to the LED 14 (a narrow-angle output constant current circuit 32 and a wide-angle output constant current circuit 33), and the power supply And an adjuster (adjustment unit 19) for adjusting the current supplied to the circuit. Specifically, the dimming unit has a predetermined direction (for example, A in FIG. 5) as an adjuster corresponding to one of the first type of light distribution member and the second type of light distribution member. Direction), the current supplied to the power circuit corresponding to one light distribution member (narrow-angle output constant current circuit 32) is increased, and when operated in the opposite direction to the predetermined direction, A first variable resistor (narrow-angle slide volume 19a) is provided to reduce the current supplied to the power supply circuit (narrow-angle output constant current circuit 32) corresponding to the optical member. In addition, the dimming unit, as an adjuster corresponding to the other light distribution member, is supplied to a power supply circuit (wide-angle output constant current circuit 33) corresponding to the other light distribution member when operated in the predetermined direction. A second variable resistor (wide angle) that decreases the current and increases the current supplied to the power supply circuit (wide-angle output constant current circuit 33) corresponding to the other light distribution member when operated in the direction opposite to the predetermined direction. Slide volume 19b).

  By adopting the configuration as described above, according to the present embodiment, the light distribution (beam angle) of the lighting fixture 11 is confirmed while confirming the appearance of the exhibits etc. irradiated after the fixture installation without exchanging parts or the like. ) Can be changed continuously.

  Next, the light distribution characteristic of the lighting fixture 11 is demonstrated.

  FIG. 6 is a light distribution curve diagram illustrating an example of the light distribution characteristic of the lighting fixture 11.

  6A, when only the narrow-angle circuit 23 is turned on (if the minimum value of the range in which the output current of the wide-angle output constant current circuit 33 can be adjusted is 0 A, the wide-angle slide volume 19b is set to “narrow”. When the “corner” scale is adjusted), a narrow-angle light distribution curve is obtained, and (c) when only the wide-angle circuit 24 is turned on (within a range in which the output current of the narrow-angle output constant current circuit 32 can be adjusted). If the minimum value is 0A, a wide-angle light distribution curve is obtained when the narrow-angle slide volume 19a is set to the “wide-angle” scale).

  Further, (b) by changing the current values of the narrow-angle circuit 23 and the wide-angle circuit 24 (sliding the wide-angle slide volume 19b and the narrow-angle slide volume 19a), an intermediate light distribution curve is obtained continuously. Will be.

  In the present embodiment, the narrow-angle lens 15 is arranged at the center, and the other narrow-angle lens 15 and the wide-angle lens 16 are arranged so as to be alternately arranged around the lens. Therefore, the current value of the narrow-angle circuit 23 is fixed at the maximum current, and the current value of the wide-angle circuit 24 is changed (the wide-angle slide volume 19b is adjusted while the narrow-angle slide volume 19a is adjusted to the “narrow angle” scale. By sliding), the light around the irradiated object can be controlled while maintaining the brightness near the center of the irradiated object. Further, the current value of the wide-angle circuit 24 is fixed at the maximum current, and the current value of the narrow-angle circuit 23 is changed (slide the narrow-angle slide volume 19a while keeping the wide-angle slide volume 19b aligned with the “wide-angle” scale. By doing so, it is possible to control the illuminance near the center while maintaining a wide irradiation range.

  By simultaneously controlling the current values of the narrow-angle circuit 23 and the wide-angle circuit 24 in opposite directions (sliding the wide-angle slide volume 19b and the narrow-angle slide volume 19a simultaneously in the same direction), the amount of light is substantially constant. Only the beam angle can be controlled continuously within a narrow to wide angle range. In the present embodiment, the current value control direction is reversed by the narrow-angle circuit 23 and the wide-angle circuit 24 with respect to the moving direction of the slide volume, so that the user can easily operate by moving the slide volume together. be able to.

  FIG. 7 is a graph showing the relationship between the slide volume and the output current.

  In FIG. 7, the relationship between the slide volume and the output current is not limited to (a) a linear relationship, and the output characteristics of the lighting circuit (narrow angle circuit 23, wide angle circuit 24) are (b) and The output characteristic curve shown in FIG. By setting such output characteristics, it is possible to reduce the amount of change in a region where the light output is high, or to reduce the amount of change in a region where the light output is low. In addition, the light distribution characteristic can be easily finely adjusted. In particular, if the light is changed greatly in a region where the light output is low, the light feels as if the light has changed more than the amount of change in the light output, so the amount of change in the light in the region where the light output is low is reduced. Then, the user can perform fine adjustment without feeling uncomfortable.

  In the present embodiment, the output currents of the wide-angle output constant current circuit 33 and the narrow-angle output constant current circuit 32 can be adjusted, respectively, and the light amounts emitted from the wide-angle LED 14b and the narrow-angle LED 14a are changed. Although the width of the light distribution angle can be adjusted, changing the amount of light of the LED 14 disposed in the center has little influence on the light distribution characteristics of the lighting fixture 11. Therefore, you may perform control which makes the light quantity of LED14 arrange | positioned in the center constant.

  FIG. 8 is a perspective view of a lighting fixture 11 according to a first modification of the present embodiment.

  In FIG. 8, the lenses arranged in the lamp 12 are arranged in a straight line, and in order from one end side, the wide-angle lens 16 → the narrow-angle lens 15 → the wide-angle lens 16 → the narrow-angle lens 15 → the wide-angle lens. 16 is set.

  In the present embodiment, the light distribution obtained by the wide-angle lens 16 disposed at the center and the light distribution obtained by the narrow-angle lens 15 disposed on both sides of the lens are overlapped. Further, when the light distribution obtained from the luminaire 11 is set to a wide angle, it is a time when the light from the lamp 12 is desired to be widened. Therefore, wide-angle lenses 16 are disposed on both ends of the lamp 12.

  Thus, the arrangement of the lenses of the lamp 12 is not limited to the circle as shown in FIG. 1, and may be a linear arrangement.

  FIG. 9 is a perspective view of a lighting fixture 11 according to a second modification of the present embodiment.

  In FIG. 9, one narrow-angle lens 15 is arranged at the center, and six wide-angle lenses 16 are arranged so as to surround the central narrow-angle lens 15.

  Thus, the quantity ratio of the two types of lenses may not be the same number (that is, the number of the wide-angle lenses 16 and the narrow-angle lenses 15 may be different), and the quantity ratio depends on the obtained light distribution characteristics. The ratio may be changed drastically.

  FIG. 10 is a perspective view of a lighting fixture 11 according to a third modification of the present embodiment.

  In FIG. 10, the lighting fixture 11 is formed as a downlight embedded in the ceiling. The lighting fixture 11 includes a heat sink 26 for heat dissipation, and includes three attachment springs 27 (only two are shown in FIG. 10). When the lighting fixture 11 is attached, the attachment spring 27 is pressed against the heat sink 26 side, and the lighting fixture 11 is pushed from the heat sink 26 side into an embedding hole provided on the ceiling surface. When the lighting fixture 11 is attached, the bottom of the ring shape of the lamp 12 protrudes downward from the ceiling surface. A wide-angle slide volume 19b and a narrow-angle slide volume 19a of the adjustment unit 19 are provided on the side surface of the bottom portion.

  Fig.11 (a) is a perspective view of the lighting fixture 11 which concerns on the 4th modification of this Embodiment. FIG. 11B is a partially enlarged view of the power supply case 18 of the lighting fixture 11.

  11 (a) and 11 (b), the luminaire 11 has a rotary volume (a wide angle rotary volume 19d and a narrow angle) instead of the slide volume (the wide angle slide volume 19b and the narrow angle slide volume 19a) of the adjustment unit 19. A corner rotary volume 19c) is provided. As in the case of the slide volume, the wide-angle rotary volume 19d and the narrow-angle rotary volume 19c are provided so as to protrude from the side surface of the power supply case 18, and two DC power supply circuits (wide-angle output constant current circuits) 33 and the output current of the narrow-angle output constant current circuit 32) can be controlled independently by each rotary volume.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  In this Embodiment, the structure of the power supply circuit 30 (lighting device) with which the lighting fixture 11 is provided differs from the thing of Embodiment 1. FIG.

  FIG. 12 is a circuit block diagram of the luminaire 11.

  In FIG. 12, the LED module 13 includes a narrow angle circuit 23 and a wide angle circuit 24 as in the first embodiment.

  The power supply circuit 30 includes a rectifying / smoothing circuit 31, an output constant current circuit 45, an output control circuit 46, a control circuit 34 (for example, a microcomputer), and an adjustment unit 19. As in the first embodiment, the rectifying / smoothing circuit 31 performs full-wave rectification on the commercial AC power supply AC using the diode bridge 35 and smoothes it using the smoothing capacitor 36 to obtain a DC voltage. The output constant current circuit 45 is connected to the rectifying / smoothing circuit 31. The output control circuit 46 is connected to the output constant current circuit 45 and the narrow angle circuit 23 and the wide angle circuit 24 of the LED module 13. The control circuit 34 adjusts the output current of the output constant current circuit 45 and controls the output control circuit 46. The adjustment unit 19 sets an adjustment value of the control circuit 34.

  The output constant current circuit 45 includes a constant current control FET 37, a resistor 38, a choke coil 39, a transistor 40, a diode 41, a current detection resistor 42, a constant current control circuit 43, and an electrolytic capacitor 44. The drain terminal of the constant current control FET 37 is connected to the high potential side of the rectifying and smoothing circuit 31. The resistor 38 is connected between the drain terminal and the gate terminal of the FET 37. One end of the choke coil 39 is connected to the source terminal of the FET 37. The transistor 40 has a collector terminal connected to the gate terminal of the FET 37 and an emitter terminal connected to the low potential side of the rectifying and smoothing circuit 31. The diode 41 has a cathode terminal connected to the source terminal of the FET 37 and an anode terminal connected to the low potential side of the rectifying and smoothing circuit 31. One end of the current detection resistor 42 is connected to the low potential side of the electrolytic capacitor 44, and the other end is connected to the wide-angle circuit 24 of the LED module 13. The constant current control circuit 43 is connected to the other end of the current detection resistor 42, the base terminal of the transistor 40, and the control circuit 34. The electrolytic capacitor 44 has a positive electrode connected to the source terminal of the FET 37 via the choke coil 39 and a negative electrode connected to the low potential side of the rectifying and smoothing circuit 31.

  Similar to the constant current control circuit 43 in the first embodiment, the constant current control circuit 43 of the output constant current circuit 45 detects the current flowing through the current detection resistor 42, and the current flowing through the current detection resistor 42 is a constant current. Thus, the switching of the transistor 40 is controlled to control the switching of the constant current control FET 37. Thus, the constant current control circuit 43 adjusts the direct current flowing through the wide-angle LED 14b and the narrow-angle LED 14a by the output constant-current circuit 45.

  Note that, like the constant current control circuit 43 in the first embodiment, the constant current control circuit 43 includes the transistor 40 and the constant current so that the current flowing through the current detection resistor 42 becomes a current value adjusted by the control circuit 34. The switching of the current control FET 37 is controlled. Therefore, the control circuit 34 adjusts the current value flowing through the current detection resistor 42 to different current values such as 100 mA and 300 mA, thereby adjusting the current flowing through the wide-angle LED 14b and the narrow-angle LED 14a. The amount of light emitted from the corner LED 14a changes.

  The output control circuit 46 includes a narrow-angle FET 47, a wide-angle FET 48, and an FET drive circuit 49. The wide-angle FET 48 is connected to the wide-angle LED 14b. The narrow angle FET 47 is connected to the narrow angle LED 14a. The FET drive circuit 49 controls switching of the wide-angle FET 48 and the narrow-angle FET 47 based on the control signal from the control circuit 34.

  For example, the FET drive circuit 49 can turn on the wide-angle LED 14b and the narrow-angle LED 14a alternately by turning on and off the wide-angle FET 48 and the narrow-angle FET 47 alternately. At this time, if the lighting time of the narrow-angle LED 14a (the on-time of the narrow-angle FET 47) is long, the average illuminance of the narrow-angle LED 14a increases and the light distribution characteristics become narrow. On the other hand, if the lighting time of the wide-angle LED 14b (the on-time of the wide-angle FET 48) is long, the average illuminance of the wide-angle LED 14b increases and the light distribution characteristic becomes a wide angle.

  The adjustment unit 19 includes one slide volume 19e (variable resistor). When the slide volume 19e is slid to one side, the time for the current to flow through the wide-angle LED 14b is lengthened, and when it is slid to the other side, the time for the current to flow through the narrow-angle LED 14a is lengthened.

  Thus, according to the present embodiment, the light distribution characteristic can be changed to a wide angle or a narrow angle with one slide volume 19e (or a rotary volume).

  The adjustment unit 19 may include a slide volume (or a rotary volume) that sets an adjustment value for adjusting the output current of the output constant current circuit 45.

  In the present embodiment, the narrow angle circuit 23 and the wide angle circuit 24 of the LED module 13 are connected in parallel to each other. The narrow-angle FET 47 and the wide-angle FET 48 of the output control circuit 46 are connected in series to the narrow-angle circuit 23 and the wide-angle circuit 24, respectively. As a modification of the present embodiment, the narrow angle circuit 23 and the wide angle circuit 24 of the LED module 13 may be connected in series with each other. In this case, the narrow-angle FET 47 and the wide-angle FET 48 of the output control circuit 46 are connected in parallel to the narrow-angle circuit 23 and the wide-angle circuit 24, respectively. Therefore, when the narrow-angle FET 47 is turned off, the narrow-angle LED 14a can be turned on, and when the wide-angle FET 48 is turned off, the wide-angle LED 14b can be turned on. Also in this case, the control circuit 34 can turn on the narrow-angle LED 14a and the wide-angle LED 14b alternately by turning on and off the narrow-angle FET 47 and the wide-angle FET 48 alternately. At this time, if the lighting time of the narrow-angle LED 14a (the off-time of the narrow-angle FET 47) is long, the average illuminance of the narrow-angle LED 14a increases and the light distribution characteristics become narrow. On the other hand, if the lighting time of the wide-angle LED 14b (the off-time of the wide-angle FET 48) is long, the average illuminance of the wide-angle LED 14b increases and the light distribution characteristic becomes a wide angle.

  As mentioned above, although embodiment of this invention was described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  DESCRIPTION OF SYMBOLS 11 Lighting fixture, 12 Lamp, 13 LED module, 14 LED, 14a Narrow angle LED, 14b Wide angle LED, 15 Narrow angle lens, 16 Wide angle lens, 17 Lens cover, 18 Power supply case, 19 Adjustment part, 19a Narrow Angle slide volume, 19b Wide angle slide volume, 19c Narrow angle rotary volume, 19d Wide angle rotary volume, 19e Slide volume, 20 Substrate, 21 Connector, 22 patterns, 23 Narrow angle circuit, 24 Wide angle circuit, 25 Arm part, 26 heat sink, 27 mounting spring, 30 power supply circuit, 31 rectifying smoothing circuit, 32 narrow-angle output constant current circuit, 33 wide-angle output constant current circuit, 34 control circuit, 35 diode bridge, 36 smoothing capacitor, 37 FET, 38 resistance , 39 Coil, 40 transistor, 41 diode, 42 current detection resistor, 43 constant current control circuit, 44 electrolytic capacitor, 45 output constant current circuit, 46 output control circuit, 47 narrow angle FET, 48 wide angle FET, 49 FET drive circuit, AC Commercial AC power supply.

Claims (6)

A first light distribution member;
A first light source whose light distribution is controlled by the first light distribution member;
A second light distribution member having a narrower light distribution angle than the first light distribution member;
A second light source whose light distribution is controlled by the second light distribution member;
A dimming unit for dimming the first light source and the second light source individually;
The light control unit is
A power supply circuit connected to the first light source and the second light source and outputting a current to the first light source and the second light source;
The slide volume is slidably installed between the first scale and the second scale, and the output current from the power supply circuit to the first light source is closer to the first scale when the position adjusted by the slide operation is closer to the first scale. A first variable resistor to be enlarged;
It is a slide volume installed in parallel with the first variable resistor and slidable between the first scale and the second scale. The closer the position adjusted by the slide operation is to the second scale, the closer to the power source And a second variable resistor for increasing an output current from the circuit to the second light source. The lighting fixture is a downlight embedded in an embedding hole provided on the ceiling surface, and the bottom of the main body projects downward from the ceiling surface,
The lighting apparatus according to claim 1, wherein the first variable resistor and the second variable resistor are installed on a side surface of a bottom portion of the main body. The lighting apparatus according to claim 2, wherein the first variable resistor and the second variable resistor are installed such that respective slide volumes are arranged vertically on the side surface of the bottom of the main body. 4. The illumination according to claim 2, wherein each of the first variable resistor and the second variable resistor protrudes from the same opening formed on a side surface of the bottom of the main body. Instruments. A first light distribution member;
A first light source whose light distribution is controlled by the first light distribution member;
A second light distribution member having a narrower light distribution angle than the first light distribution member;
A second light source whose light distribution is controlled by the second light distribution member;
A dimming unit for dimming the first light source and the second light source individually;
The light control unit is
A power supply circuit connected to the first light source and the second light source and alternately outputting a current to the first light source and the second light source;
The slide volume is slidably installed between the first scale and the second scale, and the closer the position adjusted by the slide operation is to the first scale, the more current output from the power supply circuit to the first light source. And a variable resistor that lengthens the output time of the current from the power supply circuit to the second light source as the position adjusted by the slide operation is closer to the second scale. . Said first and second light sources may be any luminaire of claims 1 5, characterized in that the LED, respectively.

Images