JP5388361B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture applied to a downlight embedded in, for example, a ceiling construction surface using an LED as a light source.

  As an example of a conventional lighting fixture, there is one in which an LED substrate on which an LED chip is mounted and a sensor substrate on which a sensor is mounted are provided separately (for example, see Patent Document 1).

JP 2001-325810 A (FIG. 1, paragraph number 0019)

However, in the conventional lighting fixture disclosed in Patent Document 1, a disk-shaped support plate whose central portion is recessed downward in a trapezoidal shape is used, and a sensor is placed in the central portion of the support plate via a sensor substrate. It is attached. And the LED board is attached to the outer side of the support plate via the heat sink.
Therefore, the conventional lighting device disclosed in Patent Document 1 requires not only a large number of man-hours for creating a complicated trapezoidal support plate, but also increases the radial dimension of the trapezoidal support plate. For this reason, there is a possibility that the whole size increases.

In addition, in the conventional lighting fixture disclosed in Patent Document 1, a sensor is disposed in the lamp chamber that houses the LED chip.
Therefore, in the conventional lighting device disclosed in Patent Document 1, the sensor may be affected by the heat generated by the LED chip.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a luminaire that can guarantee the performance of the sensor without increasing the size.

  The luminaire according to the present invention is separated with a gap between the sensor substrate on which at least one of the human body sensor and the brightness sensor is mounted at the center and the sensor substrate, and is positioned around the sensor. An LED substrate on which an LED package on which an LED chip and a phosphor are disposed is mounted, a concave reflector disposed on the front surface of the LED substrate, and a bottomed portion, and a side cylinder portion is interposed in a gap to cover the sensor A first cover and a second cover that covers the LED package independently of the first cover are provided.

  In the lighting fixture according to the present invention, the LED package is disposed inside the concave reflector, and includes a packing sandwiched between the first cover and the second cover on the back side of the concave reflector.

  According to the lighting fixture of the present invention, there is an effect that the performance of the sensor can be ensured without increasing the size.

The disassembled perspective view of the lighting fixture of 1st Embodiment which concerns on this invention Bottom view of the lighting fixture of FIG. Vertical sectional view of the luminaire of FIG. The vertical sectional view of the lighting fixture of a 2nd embodiment concerning the present invention.

Hereinafter, the lighting fixture which concerns on several embodiment of this invention is demonstrated with reference to drawings.
(First embodiment)
The lighting fixture 10 which is 1st Embodiment of this invention is the sensor main body 11, the frame member 12 attached to the front surface of the instrument main body 11, the sensor board | substrate 13 with which the human body sensor 14 was mounted in the center part, and a sensor board | substrate. LED substrate 15 mounted with a plurality of LED packages 18 each having LED chip 17 with a phosphor arranged so as to be located around human body sensor 14 with gap 16 between them and LED substrate, and LED substrate A first cover 20 that is formed in a bottomed shape having a concave reflector 19 disposed on the front surface of 15, a bottom plate 21 and a cylindrical portion 22, and the cylindrical portion 22 is interposed in the gap 16 to cover the human body sensor 14; The downlight is provided with a second cover 23 that covers the LED package 18 independently of the first cover 20 and a packing 24, and is embedded in the mounting hole 2 provided in the ceiling construction surface 1.

  As shown in FIG. 1, the instrument body 11 is formed in a bottomed cylindrical shape having a peripheral plate 25 and a bottom plate 26 using, for example, a hard resin material having an insulating property or a metal material such as die casting. The frame member 12 is formed in a cylindrical shape using the same material as that of the instrument body 11, and is attached to the outside of the lower end portion of the instrument body 11. The frame member 12 has a flange 27 that contacts the lower surface of the ceiling construction surface 1 at the outer edge of the lower end portion, and a plurality of mounting springs (not shown) that are locked to the upper surface of the ceiling construction surface 1 are attached to the outer peripheral portion. Yes.

  The sensor substrate 13 is formed in a disk shape having an outer diameter smaller than the inner diameter of the cylindrical portion 22 of the first cover 20, and is attached to the lower side of the central portion of the bottom plate 26 of the instrument body 11. The human body sensor 14 has a function of sensing a temperature difference between a human being who is a detection target and an ambient temperature. Since the human body sensor 14 is mounted on the lower surface of the sensor board 13, the lower side of the sensor board 13 is set as a sensing area. The LED substrate 15 is formed in a donut-shaped circular plate shape having a first insertion hole 28 having an inner diameter larger than the outer diameter of the cylindrical portion 22 of the first cover 20 at the center portion. It is attached to the lower surface of 26 by being thermally connected.

  The sensor board 13 and the LED board 15 are offset from each other in the vertical direction, and a gap 16 is formed between the sensor board 13 and the first insertion hole 28 of the LED board 15. Since the LED chip 17 is mounted on the lower surface of the LED substrate 15, the plurality of LED packages 18 are set below the LED substrate 15 as an irradiation region. The concave reflector 19 is formed in a concave spherical shape, and the inner surface is a metal vapor deposition surface by, for example, aluminum sputtering. The concave reflector 19 has a plurality of LED chips 17 arranged inward and the same number as the LED chips 17.

  The first cover 20 is formed using, for example, a transparent or milky white resin material. Similar to the first cover 20, the second cover 23 is formed in a donut-shaped disk shape having an outer diameter equivalent to that of the LED substrate 15 using, for example, a transparent or milky white resin material. The second cover 23 has a second insertion hole 29 having an inner diameter larger than the outer diameter of the cylindrical portion 22 of the first cover 20 at the center, and is attached to the front surface of the concave reflector 19. The packing 24 has an inner diameter that is slightly smaller than the outer diameter of the cylindrical portion 22 of the first cover 20 and has an outer diameter that is slightly larger than the second insertion hole 29 of the second cover 23. It is formed in a ring shape.

  As shown in FIGS. 2 and 3, the instrument body 11 has a third insertion hole 30 having an inner diameter dimension larger than the outer diameter dimension of the cylindrical portion 22 of the first cover 20 in the center portion of the bottom plate 26. A power supply unit 31 is incorporated on the bottom plate 26 inside 25. The power supply unit 31 is electrically connected to an external commercial power supply control circuit through a power supply terminal block (not shown), and has a printed circuit (not shown) on the sensor board 13 and an LED board 15 through an instrument wiring (not shown). It is electrically connected to a printed circuit (not shown). The power supply unit 31 processes an electrical signal transferred from the human body sensor 14 and supplies a predetermined current to the printed circuit of the LED board 15, and an LED board 15 based on a drive signal from the control circuit. And a lighting driving section for supplying a predetermined current to the printed circuit. The height dimension of the first cover 20 is sufficiently longer than the length dimension from the bottom plate 26 of the instrument body 11 to the second cover 23.

  Next, a procedure for attaching the first cover 20 will be described. The first cover 20 is located between the first insertion hole 28 of the LED substrate 15 and the sensor substrate 13 through the second insertion hole 29 of the second cover 23 with the tube portion 22 first from below the instrument body 11. And the third insertion hole 30 of the instrument body 11 are inserted in this order. When the first cover 20 is inserted toward the instrument body 11, the outer diameter of the cylindrical portion 22 of the first cover 20 is smaller than the second insertion hole 29, smaller than the first insertion hole 28, Since it is smaller than the three insertion holes 30, the cylindrical portion 22 of the first cover 20 is disposed in a non-contact manner with the second insertion hole 29, the first insertion hole 28, and the third insertion hole 30. At this time, since the inner diameter dimension of the cylindrical portion 22 is larger than the outer diameter dimension of the sensor substrate 13, the first cover 20 is disposed in a non-contact manner with respect to the sensor substrate 13.

  And the 1st cover 20 is fixed to the instrument main body 11 in the position. Subsequently, the packing 24 between the second insertion hole 29 of the second cover 23 and the cylindrical portion 22 of the first cover 20 is attached, so that the second cover 23 and the first cover 20 are in close contact with each other without any gap. The Next, the frame member 12 is attached to the instrument body 11. Thereby, the sensor substrate 13 and the human body sensor 14 are thermally disconnected from the LED substrate 15 and the LED package 18 by the cylindrical portion 22 of the first cover 20. The packing 24 is attached to the first cover 20 and the second cover 23 that are thermally shielded from the LED substrate 15 and the LED package 18.

  In such a lighting fixture 10, the fixture main body 11 is inserted into the attachment hole 2 of the ceiling construction surface 1, and the attachment spring is attached to the ceiling construction surface after the flange 27 of the frame member 12 contacts the lower surface of the ceiling construction surface 1. 1 is installed on the ceiling construction surface 1 by being hooked on the upper surface of 1. When the drive signal is given to the power supply unit 31 from the control circuit, the lighting drive unit is driven, and a predetermined current is supplied to the printed circuit of the LED board 15. As a result, the LED chip 17 of the LED package 18 emits light, and the direct light from the LED chip 17 and the reflected light reflected by the concave reflector 19 irradiate the floor surface through the second cover 23. At this time, if the presence of a person is detected by the human body sensor 14 while the LED chip 17 is emitting light, the electric signal of the LED chip 17 is transferred from the human body sensor 14 to the sensor driving unit of the power supply unit 31. Luminescence continues. In contrast to this, when the human sensor no longer detects the presence of the person, the light emission of the LED chip 17 is stopped or dimmed by the electrical signal transferred from the human sensor 14 to the sensor driving unit of the power supply unit 31, and the power consumption is reduced. Suppress.

Therefore, in the lighting fixture 10 of the first embodiment, since the cylindrical portion 22 of the first cover 20 is inserted into the gap 16 between the sensor substrate 13 and the LED substrate 15, a complicated base as in the conventional case is used. A support plate having a large shape and a large radial dimension is not used.
Thereby, in the lighting fixture 10 of this 1st Embodiment, size reduction can be achieved, without enlarging.
In the lighting apparatus 10 of the first embodiment, the packing 24 is mounted on the first cover 20 and the second cover 23 that are thermally shielded from the LED substrate 15 and the LED package 18.
Thereby, in the lighting fixture 10 of this 1st Embodiment, deterioration of the packing 24 can be prevented.
Furthermore, in the lighting fixture 10 of the first embodiment, the LED substrate 15 and the LED package 18 are thermally blocked from the sensor substrate 13 and the human body sensor 14.
Thereby, in the lighting fixture 10 of this 1st Embodiment, since the heat from the LED board 15 and the LED package 18 is not transmitted to the sensor board | substrate 13 and the human body sensor 14, the performance of the human body sensor 14 can be ensured.
In addition, in the lighting apparatus 10 of the first embodiment, since the human body sensor 14 is surrounded by the first cover 20, flying insects such as insects are not attached to the human body sensor 14 and the floor surface is included. Thus, the human body sensor 14 becomes inconspicuous from the outside.
Thereby, the human body sensor 14 can be protected and the appearance can be improved.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment of this invention is demonstrated. Note that, in the following second embodiment, the same or equivalent components in the drawing are simplified or described for the same components or functionally similar components as those in the first embodiment described above. Omitted.
As shown in FIG. 4, in the lighting fixture 40 according to the second embodiment of the present invention, a brightness sensor 41 is mounted on the side of the human body sensor 14 on the sensor substrate 13. The brightness sensor 41 constantly detects the brightness of the room, and detects different electrical signals when the outside light reaches the room sufficiently brightly and when the outside light does not reach the room and becomes dark. It has a function of transferring to the drive unit.

  When the LED chip 17 emits light and the interior of the lighting fixture 40 is sufficiently bright from the darkness of the room, the electrical signal transferred from the brightness sensor 41 to the sensor driving unit. As a result, the light emission of the LED chip 17 is dimmed or stopped by the power supply unit 31.

Therefore, in the lighting fixture 40 of the second embodiment, the light from the LED chip 17 is controlled by the brightness sensor 41 according to the brightness of the room.
Thereby, in the lighting fixture 40 of this 2nd Embodiment, daytime power consumption can be suppressed.

  In addition, the instrument main body 11, the frame member 12, the LED package 18 and the like used in each of the embodiments are not limited to those illustrated, and can be appropriately changed.

DESCRIPTION OF SYMBOLS 10, 40 Lighting fixture 13 Sensor board 14 Human body sensor 15 LED board 16 Crevice 17 LED chip 18 LED package 19 Concave reflector 20 First cover 23 Second cover 24 Packing 41 Brightness sensor

Claims (2)

A sensor board on which at least one of a human body sensor and a brightness sensor is mounted in the center;
An LED substrate mounted with an LED package that is separated from the sensor substrate with a gap and is disposed around the sensor, and in which an LED chip and a phosphor are arranged;
A concave reflector disposed on the front surface of the LED substrate;
A first cover formed on the bottom and covering the sensor with the cylindrical portion of the side interposed in the gap;
A lighting fixture comprising: a second cover that covers the LED package independently of the first cover. The lighting fixture according to claim 1,
The said LED package is a lighting fixture provided with the packing which is arrange | positioned inside the said concave reflecting plate, and is clamped by the 1st cover and the 2nd cover in the back side of the said concave reflecting plate.

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