JP2009283198A - Embedded lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedded lighting device with an auxiliary light source, in which the auxiliary light source can not be seen from right below and glare is reduced. <P>SOLUTION: The embedded lighting device includes a main light source, a reflecting plate guiding light from the main light source forward, and an auxiliary light source. The auxiliary light source is provided in a recessed portion arranged in the reflecting plate, and the reflecting plate is provided with a reflecting surface with which light from the auxiliary light source is emitted after being reflected by the reflecting plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an embedded luminaire, and more particularly to glare reduction in an embedded luminaire with an auxiliary light source.

Embedded lighting fixtures that are installed by being inserted into mounting holes formed on the ceiling surface are widely used. In recent years, embedded lighting fixtures having an auxiliary light source having an auxiliary function such as a nightlight have been put into practical use.
For example, as shown in FIG. 7, an embedded lighting fixture in which a bean bulb as an auxiliary light source 103 is arranged next to an incandescent bulb as a main light source 101 having a reflecting mirror 102 has been put into practical use. As the bean bulb plays the role of nightlight, it is widely used in homes (Patent Document 1).

JP 2003-123505 A

However, the embedded luminaire of Patent Document 1 has a problem in that the bean ball, which plays the role of night light, is visible from directly below, so that glare is felt.
That is, in the conventional embedded luminaire, the auxiliary light source is often disposed adjacent to the main light source, and the optical axis thereof is almost the same as that of the main light source. The appearance and direct light will be seen directly, causing glare problems.
The present invention has been made in view of the above circumstances, and an object thereof is to provide an embedded lighting apparatus with an auxiliary light source in which the auxiliary light source cannot be seen from directly below and glare can be reduced.
Another object of the present invention is to provide a small embedded lighting fixture.
It is another object of the present invention to provide an embedded luminaire configured to efficiently emit light from an auxiliary light source even when the auxiliary light source is not visible from directly below.
It is another object of the present invention to provide an embedded lighting apparatus that can efficiently irradiate both the main light source and the auxiliary light source.

In order to achieve the above object, the present invention is an embedded luminaire having a main light source, a reflector that guides light from the main light source forward, and an auxiliary light source, and the auxiliary light source includes: The reflection plate is provided in a recess provided in a reflection plate, and the reflection plate includes a reflection surface that reflects and emits light from the auxiliary light source by the reflection plate.
According to this configuration, the auxiliary light source is installed in a recess provided in the reflecting plate, and the reflecting plate has a reflecting surface that emits light after the light from the auxiliary light source is reflected by the reflecting plate. Therefore, even if it is directly under the embedded lighting fixture, the appearance of the auxiliary light source and the direct light are not seen.

Further, the present invention includes the above-described embedded luminaire, wherein the auxiliary light source is configured such that its optical axis faces the reflector.
According to this configuration, since the optical axis of the auxiliary light source faces the reflector, the appearance of the auxiliary light source and the direct light are not seen even directly under the embedded lighting fixture.

Further, the present invention includes the above-described embedded lighting device, wherein the optical axis of the auxiliary light source is disposed so as to face the inner peripheral surface of the concave portion provided in the reflecting plate.
With this configuration, since the optical axis of the auxiliary light source faces the inner peripheral surface of the concave portion provided in the reflector, the optical characteristics (for example, specular reflection) of the portion other than the concave portion that reflects the light of the main light source and the auxiliary light source By separating the optical characteristics (for example, diffuse reflection) of the part that reflects the light, the light from the auxiliary light source can be made diffuse while keeping the desired optical characteristics of the main light source, and only the light from the auxiliary light source is diffused. The glare reduction effect can be enhanced.

Moreover, this invention contains the said recessed part provided in the opening edge of the said reflecting plate in the said embedded lighting fixture.
With this configuration, the concave portion is provided at the opening edge of the reflector, so that the portion other than the concave portion that reflects the light of the main light source is not divided, it is not necessary to calculate the loss due to the concave portion, and the optical design is simple It becomes.

According to the present invention, in the embedded lighting fixture, a frame body is provided at an opening edge of the reflector so as to cover a peripheral edge of the recess, and the auxiliary light source is attached to the frame body. Including things.
With this configuration, an auxiliary light source is provided on the frame body, and it is only necessary to attach the frame body with the auxiliary light source to fix the embedded lighting apparatus body when the embedded lighting apparatus is mounted. is there. In addition, the auxiliary light source can be easily replaced.

Further, the present invention includes the above-described embedded luminaire in which the auxiliary light source is an LED.
With this configuration, it is possible to reduce the glare and to provide a small-sized, long-life, low-cost embedded lighting fixture.

According to the present invention, the following effects can be obtained.
Since the light from the auxiliary light source is emitted as reflected light without directly entering the eyes, it is possible to provide a light that is not dazzling as a nightlight at midnight, and the light quality can be improved.
In addition, since the size of the apparatus can be made equal to the conventional size without increasing the size of the apparatus, the design is improved.
Furthermore, since the reflector for the auxiliary light source can also be used as the reflector for the main light source, it is not necessary to separately attach a reflector and the cost can be reduced.
Since the LED is used as the auxiliary light source, not only the LED power saving feature is utilized, but also the light distribution is easily controlled by the compact light source, and efficient light emission can be obtained. This also has the effect of saving energy.

(Embodiment 1)
Hereinafter, the embedded lighting apparatus according to Embodiment 1 of the present invention will be described in detail with reference to the drawings. 1 is a cross-sectional view of an embedded lighting fixture according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the embedded lighting fixture shown in FIG. 1, and FIG. 3 is a perspective view of the embedded lighting fixture shown in FIG. It is explanatory drawing.

The embedded lighting fixture according to Embodiment 1 of the present invention has a compact fluorescent lamp as the main light source 1 and a substantially bowl-like shape that guides the light from the main light source 1 forward, and a recess 2C is formed at the opening edge. The auxiliary light source 3 is installed in a recess 2C provided in the reflecting plate 2, and the reflecting plate 2 temporarily receives light from the auxiliary light source 3. It is characterized in that a reflecting surface is formed which is reflected by the reflecting plate and exits.
The auxiliary light source 3 is attached to the opening edge of the reflector, and is arranged on the back side (inside) of the ring-shaped frame 4 that fixes the embedded lighting fixture to the ceiling 5 so that the irradiation surface faces upward. The LED unit 31 in which a plurality of LEDs are circumferentially mounted at an interval of 1 mm and the LED power supply block 32 for driving the LED unit 31 are provided.

Further, the main light source 1 is mounted on the central axis of the bowl-shaped reflector through a socket 6 and is turned on by supplying power from a power source (not shown) through a ballast 8 attached to the terminal block 7. Is done.
The reflector 2 is embedded in a hole provided in the ceiling 5, is elastically fixed by an attachment spring 9, and is fixed by the frame body 4.
When assembling, first, the LED unit 31 is mounted on the frame 4 and the frame 4 may be fixed to the ceiling to which the reflecting mirror and the main light source are attached. Therefore, the assembling workability is also good.

The reflector 2 is designed based on the conventional downlight fixture configuration.
In addition, this reflecting plate was made into an integrated type so as to have a shape satisfying the light distribution control of the main light source (compact fluorescent lamp) and the auxiliary light source (LED unit).
The bottom of the compact fluorescent lamp as the main light source 1 has the same shape of the reflector 2 as that of the conventional downlight (a shape capable of efficiently irradiating the light of the compact fluorescent lamp downward). The part was made into the concave shape which can irradiate the light of an LED light source efficiently downward.

  FIG. 3 is a cross-sectional view showing this orientation state. As can be seen from this figure, the light L1 from the auxiliary light source 3 once irradiates downward as reflected light (indirect light) L2 on the concave portion 2C of the reflecting plate 2. As is clear from this figure, according to the embedded lighting fixture of the present invention, since there is no direct light from the auxiliary light source 3, it is difficult to feel glare. On the other hand, in the embedded lighting fixture of the conventional example shown in FIG. 7, since the auxiliary light source is in a position where it can be directly seen from directly below, glare is felt.

FIG. 4 shows a circuit configuration of a lighting circuit of the embedded lighting fixture of the present embodiment. This lighting circuit comprises a power source 12 for the main light source and a power source 32 (LED power block) for the auxiliary light source separately. According to this circuit configuration, it can be individually operated with a wall switch or the like. 11 is an inverter.
As a modified example of this circuit configuration, as shown in FIG. In this example, the power source is single and the main light source and the auxiliary light source are switched. For example, the power supply control circuit may realize control such that the lighting state is switched when the power supply is turned off and then turned on within 2 seconds.

  In the first embodiment, a compact fluorescent lamp is used as the main light source. However, the present invention is not limited to this and can be changed as appropriate, such as a normal annular fluorescent lamp and an incandescent lamp. Further, the auxiliary light source is not limited to the LED, and can be appropriately changed such as a bean ball.

In the above-described embodiment, two LEDs are provided as auxiliary light sources at opposing positions. However, one or more LEDs may be provided. Furthermore, the frame 4 may be assembled with the reflector 2 in advance.
Here, the height h0 of the embedded lighting fixture was about 210 mm, and the position of the recess for providing the auxiliary light source was about 15 mm from the opening edge.

(Embodiment 2)
Next, the embedded lighting apparatus according to Embodiment 2 of the present invention will be described in detail with reference to the drawings. FIG. 6 is a cross-sectional view of an embedded lighting apparatus according to Embodiment 2 of the present invention.

The embedded lighting fixture of Embodiment 2 of the present invention is formed so that the shape of the reflector 2S has a recess in the direction substantially perpendicular to the optical axis of the main light source 1 in the vicinity of the opening edge. And an LED light source as an auxiliary light source 3S attached so that the optical axis forms an angle of 45 degrees with respect to the optical axis of the main light source. With this configuration, a reflection surface is configured such that light from the auxiliary light source 3S is once reflected by a surface substantially orthogonal to the optical axis in the vicinity of the opening edge of the reflection plate 12 and emitted.
This auxiliary light source 3S is attached to the opening edge of the reflector similar to that used in the first embodiment, and a plurality of LEDs are arranged circumferentially at predetermined intervals so that the irradiation surface faces in the horizontal direction. A mounted LED unit 31 and an LED power supply block 32 for driving the LED unit 31 are provided.

  Since other parts are configured in the same manner as in the first embodiment, description thereof is omitted here.

  In addition, the lighting fixture of this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

For example, in each of the above-described embodiments, the type of the light source for both the main light source and the auxiliary light source can be appropriately changed without being limited to the above embodiment.
Further, although the auxiliary light source extracts light by primary reflection, high-order reflected light such as secondary reflection and tertiary reflection may be taken out. This greatly improves glare.

Sectional drawing of the embedded lighting fixture which concerns on Embodiment 1 of this invention Perspective view of the embedded lighting fixture Explanatory drawing of the embedded lighting fixture The figure which shows the lighting circuit of the embedded lighting fixture The figure which shows the modification of the lighting circuit Sectional drawing of the embedded lighting fixture which concerns on Embodiment 2 of this invention The figure which shows the recessed type lighting fixture of a prior art example

Explanation of symbols

1 Main light source 2 Reflector 3 Auxiliary light source 4 Frame 5 Ceiling 6 Socket 7 Terminal block 8 Ballast 9 Mounting spring 30 LED
31 LED power supply block

Claims (6)

An embedded luminaire having a main light source, a reflector that guides light from the main light source forward, and an auxiliary light source,
The auxiliary light source is installed in a recess provided in the reflector,
The reflection plate is an embedded luminaire having a reflection surface on which light from the auxiliary light source is reflected and emitted by the reflection plate. The embedded lighting apparatus according to claim 1,
The auxiliary light source is an embedded luminaire configured such that its optical axis faces the reflector. The embedded lighting apparatus according to claim 1,
An embedded lighting fixture arranged such that an optical axis of the auxiliary light source faces an inner peripheral surface of a concave portion provided in a reflecting plate. The embedded lighting device according to any one of claims 1 to 3,
The recessed portion is an embedded lighting fixture provided at an opening edge of the reflector. The embedded lighting fixture according to claim 4,
A frame body is provided at the opening edge of the reflecting plate so as to cover the peripheral edge of the recess,
The auxiliary light source is an embedded luminaire attached to the frame. The embedded lighting device according to any one of claims 1 to 5,
The auxiliary light source is an embedded luminaire that is an LED.

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