JP2012094316A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of reducing a quantity of light emitted from an LED and exposed to a frame body while a lamp is set at a swinging and inclined state.SOLUTION: In the lighting fixture 10, the lamp 18 is arranged on the frame body 14 in a free swinging state via a support and rotation shaft 36, and a plurality of LEDs 26 as a light source are arranged on a board 29 of the lamp 18. In the lamp 18, upper LEDs 26A arranged on an upper side 29B of the board 29 against the support and rotation shaft 36 and lower LEDs 26B arranged on a lower side 29C of the board 29 against the support and rotation shaft 36 are arranged in an asymmetrical state. Further, the lower LEDs 26B are densely arranged on the board, and the upper LEDs 26A are coarsely arranged on the board.

Description

  The present invention relates to a luminaire that is installed in a ceiling with an LED as a light source, and is applied to a downlight as an example.

  2. Description of the Related Art Conventionally, there has been known a lighting fixture in which a lens is attached to a substrate on which an LED is mounted via a reflector, and light emitted from the LED is distributed by the lens and irradiated (see, for example, Patent Document 1). ).

JP 2010-49830 A (FIG. 9, paragraph 0022)

Here, in some lighting fixtures, there is one in which a lamp is provided on a frame body so as to be able to swing through a support rotation shaft, and a plurality of LEDs are provided on the lamp as a light source.
In this lighting fixture, a lamp is provided on a frame so as to be able to swing through a support rotation shaft, and a plurality of LEDs are provided as light sources on a mounting plate of the lamp.
For this reason, when light is projected from the LED in a state where the lamp is swung, the light projected from the LED hits the frame and the light is lost.

  The present invention has been made to solve the above-described problems, and the object thereof is to reduce the amount of light projected from the LED hitting the frame when the lamp is swung and tilted. It is to provide a luminaire.

  The lighting fixture of the present invention is a lighting fixture in which a lamp is swingably provided on a frame body via a support rotation shaft, and a plurality of LEDs are provided as light sources on the mounting plate of the lamp. The LED provided in the upper portion of the mounting plate with respect to the support rotation shaft, and the LED provided in the lower portion of the mounting plate with respect to the support rotation shaft are disposed asymmetrically. LEDs are densely provided in the lower part, and LEDs are provided sparsely in the upper part.

  Moreover, the lighting fixture of this invention is provided with one or more electric power feeding parts in the site | part above the said mounting plate.

  Furthermore, as for the lighting fixture of this invention, the said electric power feeding part is provided in the mounting surface side of the said LED.

  Moreover, as for the lighting fixture of this invention, the said electric power feeding part is provided between the said LED.

  Furthermore, in the lighting fixture of the present invention, the power feeding unit is a connector.

According to the lighting fixture of the present invention, the LEDs are densely provided in the lower part of the mounting plate, and the LEDs are provided sparsely in the upper part.
Thereby, in a state where the lamp is swung and tilted, the amount of light projected from the LED hits the frame body can be reduced, and there is an effect that irradiation can be performed with reduced light loss.

The disassembled perspective view which shows the lighting fixture of 1st Embodiment which concerns on this invention. The side view which shows the state which the lamp body with which the lighting fixture of 1st Embodiment was equipped faced the perpendicular direction The side view which shows the state which the lamp body of FIG. 2 turned to the direction which inclined The perspective view which shows the state which the lamp body of FIG. 2 turned to the direction which inclined A view of arrow A in FIG. The perspective view shown in the state which simplified the principal part of the lighting fixture of FIG. The perspective view shown in the state which simplified the principal part of the lighting fixture of 2nd Embodiment which concerns on this invention. The perspective view shown in the state which simplified the principal part of the lighting fixture of 3rd Embodiment which concerns on this invention.

  Hereinafter, a lighting fixture according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the lighting fixture 10 which is 1st Embodiment of this invention is provided with the frame 14 and the lamp | ramp 18 provided in the frame 14 so that a swing was possible.
As illustrated in FIGS. 2 and 3, the lighting fixture 10 is a lighting fixture that is applied to a downlight with a frame body 14 embedded in an attachment hole 12 such as a ceiling 11.

As shown in FIGS. 4 and 5, the frame body 14 includes an annular portion (cylindrical portion) 15 formed in a substantially annular shape, and a plurality of mounting springs 16 provided on a flange 15 </ b> A at the lower end portion of the annular portion 15. I have.
As shown in FIG. 2 and FIG. 3, the flange 15 </ b> A causes the frame 14 (that is, the lighting apparatus 10) to ceiling by contacting the lower surface 11 </ b> A of the ceiling 11 with the annular portion 15 inserted into the mounting hole 12. 11 is a part to be positioned.

The attachment spring 16 is elastically deformed along the annular portion 15 when the annular portion 15 is inserted into the attachment hole 12 from below, the annular portion 15 is inserted into the attachment hole, and the flange 15A contacts the lower surface 11A of the ceiling 11. It is a member that retains the annular portion 15 in the mounting hole 12 by being elastically restored so as to increase the outer diameter of each after contact.
A lamp 18 is supported in the frame 14 so as to be swingable.

  As shown in FIG. 1, the lamp 18 includes a lamp main body 21 formed in a substantially cylindrical shape, a lens plate 22 provided on the lower end side in the lamp main body 21, and a plurality of lenses 23 formed on the lens plate 22. LED (light source) 26 provided corresponding to (see also FIG. 5), a substrate (mounting plate) 29 on which LED 26 is mounted, and a pair of connectors (feeding portion) provided on the mounting surface 29A side of substrate 29 ) 32 (see FIG. 6) and a heat radiation fin 34 provided on the top of the lamp body 21.

As shown in FIGS. 2 and 3, the lamp body 21 is provided so as to be able to swing in the direction of the arrow via a support rotation shaft 36. FIG. 2 shows a state in which the lamp main body 21 is oriented in the vertical direction, and FIG. 3 shows a state in which the lamp main body 21 is oriented in an inclined direction by swinging the neck.
As shown in FIGS. 1 and 5, the lens plate 22 is formed in a substantially circular shape, and a plurality of lenses 23 are formed.

As shown in FIG. 6, the plurality of lenses 23 are lenses (hereinafter referred to as “upper lenses”) provided on a portion 22 </ b> A on the upper side (upper half portion) 22 </ b> A of the lens plate 22 with respect to the axis 36 </ b> A of the support rotation shaft 36. 23A and a lens (hereinafter referred to as “lower lens”) 23B provided in a lower portion (lower half portion) 22B of the lens plate 22 with respect to the axis 36A of the support rotation shaft 36 asymmetrically. Has been placed.
Further, the lower lens 23B is densely provided and the upper lens 23A is sparsely provided so that the lower lens 23B is denser than the upper lens 23A.

A plurality of LEDs 26 are provided corresponding to the plurality of lenses 23. For example, 24 LEDs 26 are mounted on the mounting surface 29A side of the substrate 29 shown in FIG.
As shown in FIG. 1, the substrate 29 is formed in a substantially circular shape like the lens plate 22.

  The plurality of LEDs 26 are provided corresponding to the plurality of lenses 23, so that they are provided on the upper portion (upper half portion) 29 </ b> B with respect to the axis 36 </ b> A of the support rotation shaft 36 in the substrate 29 shown in FIG. 1. LED (hereinafter referred to as “upper LED”) 26 </ b> A and LED provided on lower portion (lower half portion) 29 </ b> C of substrate 29 with respect to axis 36 </ b> A of support rotation shaft 36 (hereinafter referred to as “lower LED”). 26B) are arranged asymmetrically.

Further, the lower LEDs 26B are densely provided and the upper LEDs 26A are sparsely provided so that the lower LEDs 26B are denser than the upper LEDs 26A.
Therefore, in the state where the lamp 18 shown in FIG. 6 is swung and tilted, the portion (the portion indicated by “///”) where the upper LED 26A is hidden by the annular portion 15 of the frame body 14 can be kept small.
Thereby, the amount of light projected from the upper LED 26 </ b> A can hit the annular portion 15 of the frame body 14, and irradiation can be performed with reduced light loss.

Here, by providing the lower LEDs 26B densely and sparsely providing the upper LEDs 26A, a pair of spaces 38 that can accommodate the connector 32 is formed between the upper LEDs 26A.
The pair of spaces 38 are provided in the vicinity of the left and right sides of the substrate 29, respectively.
The connectors 32 are arranged in a pair of connector spaces 38, respectively, and the arranged connectors 32 are provided on the mounting surface 29A (see FIG. 1) side of the substrate 29.
The pair of connectors 32 is provided in the outer periphery 29 </ b> D of the substrate 29.

Thus, by securing the pair of spaces 38 that can accommodate the connectors 32 between the upper LEDs 26A, it is not necessary to individually secure dedicated spaces for providing the pair of connectors 32.
Thereby, in the state which maintained the shape (size) of the lens plate 22 and the board | substrate 29, compactization of the lamp 18 shown in FIG. 1, ie, the lighting fixture 10, can be achieved.

  Furthermore, by providing the upper LEDs 26A sparsely, a pair of spaces 38 that can accommodate the connectors 32 can be easily secured between the upper LEDs 26A, and the degree of design freedom can be increased.

In addition, by providing the connector 32 on the mounting surface 29A side of the LED 26, it is not necessary to secure a dedicated space for providing the pair of connectors 32 on the opposite side of the mounting surface 29A.
Thereby, the lamp | ramp 18 shown in FIG. 1, ie, the lighting fixture 10, can be further reduced in size.

Next, the lighting fixture of 2nd Embodiment-3rd Embodiment is demonstrated based on FIGS.
In addition, in 2nd Embodiment-3rd Embodiment, the same code | symbol is attached | subjected about the same similar member as the lighting fixture 10 of 1st Embodiment, and description is abbreviate | omitted.

(Second Embodiment)
As shown in FIG. 7, the lighting fixture 50 according to the second embodiment of the present invention is provided with a pair of spaces 52 between the upper LEDs 26A in the vicinity of the upper end side of the substrate 29, and other configurations are the first embodiment. This is the same as the lighting fixture 10 of FIG.
The pair of connectors 32 is provided in the outer periphery 29 </ b> D of the substrate 29.

By providing the pair of spaces 52 in the vicinity of the upper end side of the substrate 29, the connector 32 provided in the pair of spaces 52 can be brought closer to the frame body 14 in a state where the lamp 18 is swung and tilted.
Therefore, since the pair of connectors 32 can be disposed in a portion (the portion indicated by “///”) hidden by the annular portion 15 of the frame body 14, a large upper LED 26 </ b> A disposed in a portion not hidden by the annular portion 15 can be secured.
Thereby, compared with the lighting fixture 10 of 1st Embodiment, the quantity which the light projected from 26 A of upper side LEDs hits the frame body can be reduced further, and it can irradiate in the state which further reduced the light loss.

  In addition, according to the luminaire 50 of the second embodiment, light loss can be reduced and the lamp 18, that is, the luminaire 50 can be made more compact, as with the luminaire 10 of the first embodiment. it can.

(Third embodiment)
As shown in FIG. 8, a lighting fixture 60 according to the third embodiment of the present invention has 18 LEDs 26 mounted on the mounting surface 29 </ b> A (see FIG. 1) side of the substrate 29. It is the same as the lighting fixture 50 of 2 embodiment.
The pair of connectors 32 is provided in the outer periphery 29 </ b> D of the substrate 29.

  According to the lighting fixture 60 of 3rd Embodiment, light loss can be decreased similarly to the lighting fixture 10 of 1st Embodiment, and the lamp | ramp 18, ie, the lighting fixture 60, can be further reduced in size.

In addition, the lighting fixture which concerns on this invention is not limited to 1st Embodiment-3rd Embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, in the first to third embodiments, the connector 32 is exemplified as the power feeding unit, but the present invention is not limited thereto, and other members can be used as the power feeding unit.

  In addition, the shapes and configurations of the lighting fixtures, frames, lamps, LEDs, substrates, connectors, and support rotation shafts used in the first to third embodiments are not limited to those illustrated, but may be changed as appropriate. Is possible.

10, 50, 60 Lighting equipment 14 Frame 18 Lamp 26 LED
26A Upper LED
26B Lower LED
29 Board (mounting plate)
29A Substrate mounting surface 29B Upper part of substrate relative to support rotation axis 29C Lower part of substrate relative to support rotation axis 32 Connector (power supply unit)
36 Support rotation shaft 36A Support rotation shaft axis 38,52 Space

Claims (5)

In a lighting fixture in which a lamp is provided on a frame so as to be able to swing through a support rotation shaft, and a plurality of LEDs are provided as light sources on a mounting plate of the lamp,
The lamp is
The LED provided in the upper part of the mounting plate with respect to the support rotation shaft and the LED provided in the lower part of the mounting plate with respect to the support rotation shaft are disposed asymmetrically. ,
A lighting fixture in which LEDs are densely provided in the lower part and LEDs are provided sparsely in the upper part. The lighting fixture according to claim 1,
A lighting fixture in which one or a plurality of power feeding portions are provided on a portion above the mounting plate. The lighting fixture according to claim 2,
The power supply unit is a lighting fixture provided on the mounting surface side of the LED. In the lighting fixture according to claim 2 or claim 3,
The power feeding unit is a lighting fixture provided between the LEDs. In the lighting fixture of any one of Claim 2 thru | or 4,
The said electric power feeding part is a lighting fixture which is a connector.

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