JP2012089281A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which is advantageous in terms of cost and can make it harder for a night-light to burn out.SOLUTION: A lighting fixture 10 comprises: a lighting load unit 12 having a plurality of LED elements 13 arranged therein; a power source unit 14 for supplying currents to the LED elements 13; and a control unit 15 for controlling turning-on and dimming states of the LED elements 13. Some of the LED elements 13 of the lighting load unit 12 are turned on or dimmed as a night-light.

Description

  The present invention relates to a luminaire having a nightlight function using an LED element as a light source.

2. Description of the Related Art Conventionally, there has been known a lighting fixture in which a plurality of nightlight LEDs are arranged around a light receiving element that receives a remote control signal (for example, see Patent Document 1).
In the conventional lighting apparatus described in Patent Document 1, a light receiving element and a plurality of nightlight LEDs are mounted on a lighting circuit board on which electronic components of a lighting circuit that controls lighting of a discharge lamp are mounted.

Japanese Patent Laying-Open No. 2008-98116 (FIG. 1, claim 1)

Since the lighting fixture described in Patent Document 1 described above is mounted on a single lighting circuit board, electronic components of a lighting circuit that controls lighting of a discharge lamp, a light receiving element, and a plurality of LEDs for nightlights. As compared with the case where the plurality of nightlight LEDs and the light receiving elements are separately arranged, the arrangement space of the plurality of nightlight LEDs and the light receiving elements can be made compact.
However, in the lighting fixture described in Patent Document 1 described above, the nightlight LED is arranged separately from the main illumination LED.

Therefore, the lighting fixture described in Patent Document 1 described above is disadvantageous in terms of cost due to an increase in the number of parts.
Moreover, the lighting fixture described in patent document 1 mentioned above lights several nightlight LED simultaneously.
Therefore, in the lighting apparatus described in Patent Document 1 described above, when the plurality of nightlight LEDs reach the end of their life almost simultaneously, all the plurality of nightlight LEDs are not turned on, causing the nightlight to run out.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus that is advantageous in terms of cost and that is unlikely to cause a nightlight burnout.

  A lighting fixture according to the present invention includes a lighting load unit in which a plurality of LED elements are arranged, a power supply unit that supplies current to the plurality of LED elements, and a control that controls lighting and dimming states of the plurality of LED elements. And lighting or dimming a part of the plurality of LED elements of the illumination load unit as a night light.

  In the luminaire according to the present invention, as the night light, each time the power is turned on, the plurality of LED elements are sequentially turned on or dimmed.

  In the luminaire according to the present invention, the plurality of LED elements are sequentially lit or dimmed as the night-light after a certain period of time has elapsed.

  In the lighting fixture according to the present invention, two or more of the plurality of LED elements are simultaneously lit or dimmed as the night light.

  In the lighting fixture according to the present invention, a plurality of LED elements arranged in the surrounding area are lit or dimmed as the night-light.

  According to the lighting fixture concerning this invention, there exists an effect that it is hard to raise | generate a nighttime light-out advantageously in terms of cost.

The bottom view at the time of full lighting of the lighting fixture of 1st Embodiment which concerns on this invention The circuit block diagram of the lighting fixture of 1st Embodiment which concerns on this invention The bottom view at the time of extinguishing of the lighting fixture of 1st Embodiment which concerns on this invention The bottom view at the time of light control of the lighting fixture of 1st Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 1st Embodiment which concerns on this invention The flowchart explaining control operation of the lighting fixture of 1st Embodiment which concerns on this invention. The bottom view at the time of full lighting of the lighting fixture of 2nd Embodiment which concerns on this invention The bottom view at the time of extinguishing of the lighting fixture of 2nd Embodiment which concerns on this invention The bottom view at the time of light control of the lighting fixture of 2nd Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 2nd Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 3rd Embodiment which concerns on this invention The circuit block diagram of the lighting fixture of 3rd Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 4th Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 5th Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 6th Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 7th Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 8th Embodiment which concerns on this invention The bottom view at the time of nightlight lighting of the lighting fixture of 9th Embodiment which concerns on this invention The side view explaining the preferable effect | action of the lighting fixture of 9th Embodiment which concerns on this invention. The side view explaining the operation which is not preferable of the lighting fixture of a 9th embodiment concerning the present invention. The bottom view at the time of nightlight lighting of the lighting fixture of 10th Embodiment which concerns on this invention

Hereinafter, the lighting fixture of several embodiment which concerns on this invention is demonstrated with reference to drawings.
(First embodiment)
The lighting fixture 10 of 1st Embodiment which concerns on this invention is the lighting main body 11, the illumination load part 12 which arranged the some LED element 13, the power supply part 14 which supplies an electric current to the some LED element 13, and several And a control unit 15 for controlling the lighting and dimming state of the LED element 13.

  As shown in FIG. 1, the illumination load unit 12 has a plurality of LED elements 13 mounted in rows and columns on the lower surface of a square plate-shaped LED substrate 16 disposed on the lower surface of a square-shaped instrument body 11. . The LED element 13 has a narrow irradiation angle.

  As shown in FIG. 2, the illumination load unit 12 has a plurality of LED elements 13 connected in parallel to a power supply line and a ground line from a power supply unit 14 having a constant voltage power supply. The LED element 13 is connected to the switching element TR and the resistor R. One of the resistors R is connected to the power supply line, and the other is connected to the anode of the LED element 13. The switching element TR is of the NPN type, the collector is connected to the cathode of the LED element 13, the emitter is connected to the ground line, and the base is connected to the PWM port (PWM1... PWMn) of the microcomputer CPU which is in the control unit 15.

  The control unit 15 is equipped with a microcomputer CPU. The microcomputer CPU is connected to the remote control signal light receiving unit 17. The remote control signal light receiving unit 17 receives a command signal transmitted when a remote controller (not shown) is operated by the user, and sets a full lighting mode, a dimming mode, a nightlight mode, and a light-off mode. The control signal for doing this is given to the microcomputer CPU.

  The microcomputer CPU applies a pulsed PWM control signal composed of 0V and 5V to the PWM port in accordance with the electrical signal received and processed by the remote control signal light receiving unit 17. That is, when 5V is applied to the PWM port of the microcomputer CPU, a base current is generated, the switching element TR is turned on, the LED element 13 emits light, dynamic lighting is performed, and 0V is applied to the PWM port of the microcomputer CPU. Then, the base element is not generated, the switching element TR is turned off, and the LED element 13 does not emit light. The microcomputer CPU is repeatedly turned on and off based on the determined duty ratio. The microcomputer CPU individually controls the plurality of switching elements 13.

The illumination load unit 12 is executed by sequentially repeating the full lighting mode, the dimming mode, the nightlight mode, and the extinguishing mode.
Note that the sequential switching between the full lighting mode, the dimming mode, the nightlight mode, and the extinguishing mode may be performed by turning on / off the power or a pull switch.

Returning to FIG. 1, in the illumination load unit 12, all LED elements 13 are lit by setting the full lighting mode.
As shown in FIG. 3, in the illumination load unit 12, all the LED elements 13 are turned on at the set dimming ratio by setting the dimming mode.
As shown in FIG. 4, the illumination load unit 12 is lit or dimmed by selecting a single LED element 13 at the center of all the LED elements 13 by setting the nightlight mode, The other LED elements 13 are turned off. In the illumination load unit 12, one LED element 13 at the center functions as a nightlight.

Accordingly, in the LED element 13, since a part of the main illumination LED element 13 that irradiates the irradiated surface is turned on or dimmed as a nightlight, the main illumination LED and the nightlight LED are separately configured. Compared with the conventional one, the number of parts can be greatly reduced, which is advantageous in terms of cost. Moreover, compared to the conventional one in which a plurality of nightlight LEDs are turned on at the same time, it is difficult to cause the nightlight to run out.
As shown in FIG. 5, in the illumination load unit 12, all the LEDs 13 are turned off by setting the turn-off mode.

Next, the control operation of the lighting fixture 10 will be described.
As shown in FIG. 6, when the control is started, the command signal from the remote controller is received, and the command signal from the remote controller is in the full lighting mode, the microcomputer CPU causes all the LED elements 13 to be fully lit. The PWM control signal is applied to the PWM port (see FIG. 1, S1 → S2 → S3).
At this time, if the command signal from the remote controller is not received, it will be in a standby state until the command signal from the remote controller is received (S1).

  When the command signal from the remote controller is received and the command signal from the remote controller is not in the full lighting mode but in the dimming mode, the microcomputer CPU causes all the LED elements 13 to light up at an arbitrary dimming level. A PWM control signal is given to the PWM port (see FIG. 3, S1 → S2 → S4 → S5).

  When the command signal from the remote controller is received and the command signal from the remote controller is not in the full lighting mode, not in the dimming mode, but in the nightlight mode, the microcomputer CPU is in the center of all the LED elements 13. The PWM control signal is applied to the PWM port so that only one selected LED element 13 is fully lit or lit at an arbitrary dimming level, and the PWM control signal is output to the PWM port so that the other LED elements 13 are extinguished. (See FIG. 4, S1 → S2 → S4 → S6 → S7).

  If the command signal from the remote controller is received and the command signal from the remote controller is not in the full lighting mode, not in the dimming mode, not in the nightlight mode, but in the extinguishing mode, the microcomputer CPU indicates that all the LED elements 13 are A PWM control signal is applied to the PWM port so as to turn off the light (see FIG. 5, S1 → S2 → S4 → S6 → S8 → S9).

  As described above, according to the lighting fixture 10 of the first embodiment, in order to turn on or dimm a part of the plurality of LED elements 13 of the lighting load unit 12 as a nightlight, the LED element 13 is a surface to be irradiated. Since a part of the main lighting LED element 13 that irradiates the light is turned on or dimmed as a nightlight, the number of parts is smaller than that of the conventional one in which the main lighting LED and the nightlight LED are separately configured. The cost can be greatly reduced and the cost can be improved. Moreover, according to the lighting fixture 10 of 1st Embodiment, compared with the conventional thing with which several LED for nightlights is lighted simultaneously, it can make it hard to raise | generate nightlight.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated.
In the following embodiments, components that are the same as those in the first embodiment described above or components that are functionally similar are denoted by the same or corresponding reference numerals in the drawings, and the description thereof is simplified or omitted. To do.

  As shown in FIG. 7, the lighting fixture 20 of 2nd Embodiment which concerns on this invention is on the lower surface of the circular board-shaped LED board 23 arrange | positioned at the illumination load part 21 at the lower surface of the circular fixture main body 22. As shown in FIG. A plurality of LED elements 13 are mounted. A circuit similar to that shown in FIG. 2 is applied to the lighting fixture 20.

In the illumination load unit 21, all the LED elements 13 are lit by setting the full lighting mode.
As shown in FIG. 8, in the illumination load unit 21, all the LED elements 13 are turned on at the set dimming ratio when the dimming mode is set.
As shown in FIG. 9, the illumination load unit 21 is turned on or dimmed by selecting the single LED element 13 at the center of all the LED elements 13 by setting the nightlight mode, The other LED elements 13 are turned off. In the illumination load unit 21, one LED element 13 in the center functions as a nightlight.
As shown in FIG. 10, in the illumination load unit 21, all the LEDs 13 are turned off by setting the turn-off mode.

(Third embodiment)
Next, the lighting fixture of 3rd Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 11, the lighting fixture 30 of 3rd Embodiment which concerns on this invention is on the lower surface of the square board-shaped LED board 33 arrange | positioned at the illumination load part 31 on the lower surface of the square-shaped instrument main body 32. As shown in FIG. A plurality of LED elements 13 are mounted.

Each time the power is turned on, the lighting load unit 31 moves and stores the lighting position of the LED element 13 serving as a night light. That is, when the power is turned on, only the leftmost LED element 13 in the third row from the top is lit as shown in the leftmost in FIG. 11, and then the second from the left in FIG. As shown in FIG. 11, only the second LED element 13 from the left in the third column from the top is lit, and thereafter, the LED elements 13 in the third column from the top in FIG. 11 are sequentially lit in the right direction.
As shown in FIG. 12, since the lighting fixture 30 has the EEPROM storage unit 34 in the microcomputer CPU, the position of the LED element 13 that is turned on as a nightlight is stored.

  According to the lighting fixture 30 of the third embodiment, since the plurality of LED elements 13 are sequentially turned on or dimmed as a nightlight, the total lighting time of the unit of the LED elements 13 to be turned on is shortened, and the nightlight is turned off. It can be surely prevented.

Next, the modification of the lighting fixture 30 of 3rd Embodiment is demonstrated.
In this modification, the lighting time of the LED element 13 that is lit as a nightlight is counted by the EEPROM storage unit 34 included in the microcomputer CPU, and the position of the LED element 13 that is lit as a nightlight is stored after a certain time. .

  According to this modification, since the plurality of LED elements 13 are sequentially turned on or dimmed after a certain period of time as a night light, the total lighting time for each LED element 13 to be turned on is shortened. Can be surely prevented from running out of the nightlight.

(Fourth embodiment)
Next, the lighting fixture of 4th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 13, the lighting fixture 40 of the fourth embodiment according to the present invention is provided on the lower surface of a circular plate-shaped LED substrate 43 disposed on the lower surface of a round fixture body 42 on the lighting load portion 41. A plurality of LED elements 13 are mounted. A circuit similar to that shown in FIG. 12 is applied to the lighting fixture 40.

  Each time the power is turned on, the illumination load unit 41 moves and stores the lighting position of the LED element 13 that becomes a night light. That is, when the power is turned on, only the LED element 13 below the center is turned on as shown in the leftmost in FIG. 13, and then, as shown in the second from the left in FIG. Only the right LED element 13 at the center is turned on, and thereafter, the four LED elements 13 at the center in FIG. 13 are sequentially turned on in the counterclockwise direction.

(Fifth embodiment)
Next, the lighting fixture of 5th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 14, the lighting fixture 50 of 5th Embodiment which concerns on this invention is on the lower surface of the square board-shaped LED board 53 arrange | positioned at the illumination load part 51 at the lower surface of the square-shaped instrument main body 52. As shown in FIG. A plurality of LED elements 13 are mounted.

In the illumination load unit 51, when the nightlight mode is set, the two selected LED elements 13 in the center of all the LED elements 13 are turned on or dimmed, and the other LED elements 13 are turned off. The In the illumination load unit 51, the two LED elements 13 in the center function as nightlights.
Note that the number of LED elements 13 that are turned on in the nightlight mode is not limited to two, but may be two or more three or four.

  According to the lighting fixture 50 of the fifth embodiment, since two of the plurality of LED elements 13 are turned on or dimmed simultaneously as a nightlight, one of the plurality of LED elements 13 is used as a nightlight. Even when one LED element 13 reaches the end of its life, it can be prevented from becoming completely dark as compared with the case where it is turned on or dimmed.

(Sixth embodiment)
Next, the lighting fixture of 6th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 15, the lighting fixture 60 of 6th Embodiment which concerns on this invention is on the lower surface of the circular board-shaped LED board 63 arrange | positioned at the illumination load part 61 at the lower surface of the round instrument main body 62. As shown in FIG. A plurality of LED elements 13 are mounted.

  In the illumination load unit 61, when the nightlight mode is set, the two selected LED elements 13 in the center of all the LED elements 13 are turned on or dimmed, and the other LED elements 13 are turned off. The In the illumination load unit 61, the two LED elements 13 in the center function as nightlights.

(Seventh embodiment)
Next, the lighting fixture of 7th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 16, the lighting fixture 70 according to the seventh embodiment of the present invention has a lighting load portion 71 on the lower surface of a square plate-shaped LED substrate 73 arranged on the lower surface of a square-shaped fixture main body 72. A plurality of LED elements 13 are mounted. A circuit similar to that shown in FIG. 12 is applied to the lighting fixture 70.

  Each time the power is turned on, the illumination load unit 71 moves and stores the lighting position of the LED element 13 that is a night light. That is, when the power is turned on, as shown at the leftmost in FIG. 16, the leftmost two LED elements 13 in the third and fourth rows from the top are turned on. As shown in the second from the left in the middle, the second and second LED elements 13 in the third and fourth rows from the top are turned on. Thereafter, the third and fourth rows from the top in FIG. The two LED elements 13 in the eye are sequentially turned on in the right direction.

(Eighth embodiment)
Next, the lighting fixture of 8th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 17, the lighting fixture 80 of 8th Embodiment which concerns on this invention is on the lower surface of the circular board-shaped LED board 83 arrange | positioned at the lighting load part 81 at the lower surface of the round shaped instrument main body 82. As shown in FIG. A plurality of LED elements 13 are mounted. A circuit similar to that shown in FIG. 12 is applied to the lighting fixture 80.

  Each time the power is turned on, the illumination load unit 81 moves and stores the lighting position of the LED element 13 serving as a night light. That is, when the power is turned on, as shown at the leftmost in FIG. 17, the left and upper two LED elements 13 at the center are turned on, and then the second from the left in FIG. 2, the two LED elements 13 on the left and lower sides of the central part are turned on, and thereafter, the four LED elements 13 in the central part in FIG. 17 are sequentially turned on two by two in the counterclockwise direction. It will be done.

(Ninth embodiment)
Next, the lighting fixture of 9th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 18, the lighting fixture 90 of 9th Embodiment which concerns on this invention is on the lower surface of the square board-shaped LED board 93 arrange | positioned at the illumination load part 91 on the lower surface of the square-shaped instrument main body 92. As shown in FIG. A plurality of LED elements 13 are mounted.

In the illumination load unit 91, when the nightlight mode is set, the four LED elements 13 arranged at the four corners around the LED substrate 93 among all the LED elements 13 are turned on or dimmed. LED element 13 is turned off. In the illumination load unit 91, the four LED elements 13 arranged at the four corners function as a night light.
The lighting load unit 91 may store the lighting position of the LED element 13 serving as a nightlight whenever the power is turned on.

As shown in FIG. 19, in the case of a lighting fixture 500 in which an LED element arranged in the central part of an LED substrate is set as a nightlight, only the central part becomes bright due to the narrow irradiation angle of the LED element, and the wall surface The side surface 94 and the floor surface 95 such as the above become extremely dark and unwell.
On the other hand, as shown in FIG. 20, four LED elements 13 arranged at the four corners of the LED substrate 93 among all the LED elements 13 are turned on or dimmed as night lights. The narrowness of the irradiation angle of the element 13 is compensated for, and the side surface 94 and the floor surface 95 are illuminated brightly.

  According to the luminaire 90 of the ninth embodiment, since the plurality of LED elements 13 arranged in the surrounding area are turned on or dimmed as a nightlight, the illumination element 90 has a uniform illumination angle that compensates for the narrow irradiation angle. Can provide lighting environment.

(10th Embodiment)
Next, the lighting fixture of 10th Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 21, the lighting fixture 100 according to the tenth embodiment of the present invention is provided on the lower surface of a circular plate-shaped LED substrate 103 disposed on the lower surface of a round fixture main body 102 on the lighting load portion 101. A plurality of LED elements 13 are mounted.

In the illumination load unit 101, by setting the nightlight mode, the four LED elements 13 arranged at regular intervals around the LED substrate 103 among all the LED elements 13 are lit or dimmed, and the like. LED element 13 is turned off. In the illumination load unit 101, the four LED elements 13 arranged in the periphery function as a night light.
Note that the lighting load unit 101 may store the lighting position of the LED element 13 serving as a nightlight whenever the power is turned on.

  In addition, in the lighting fixture of this invention, an instrument main body, an LED element, a power supply part, a control part, etc. are not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

10, 20, 30, 40, 50, 60, 70, 80, 90, 100 Lighting fixtures 12, 21, 31, 41, 51, 61, 71, 81, 91, 101 Lighting load unit 13 LED element 14 Power supply unit 15 Control unit

Claims (5)

A lighting load section in which a plurality of LED elements are arranged;
A power supply for supplying current to the plurality of LED elements;
A controller that controls lighting and dimming state of the plurality of LED elements,
The lighting fixture which lights or dimmes a part of said several LED element of the said illumination load part as a nightlight. The lighting fixture according to claim 1,
A lighting fixture in which the plurality of LED elements are sequentially turned on or dimmed each time the power is turned on as the night light. The lighting fixture according to claim 1,
A lighting fixture in which the plurality of LED elements are sequentially turned on or dimmed as the nightlight after a certain period of time has elapsed. In the lighting fixture of any one of Claims 1 thru | or 3,
A lighting fixture in which two or more of the plurality of LED elements are simultaneously turned on or dimmed as the night light. In the lighting fixture of any one of Claims 1 thru | or 4,
A lighting fixture in which a plurality of LED elements arranged in the vicinity are turned on or dimmed as the night light.

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