JPH0438406Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to a downlight.

[Background technology]

Conventional examples are shown in FIGS. 4 and 5. That is, this downlight is suitable for hallways, entrances, etc., and has a globe 52 with a flat lower end 51, an inverted trapezoidal cross section, and a stepped slope 50 in the opening 54 of the downlight main body 53. There is.

When the globe 52 is viewed from below, as shown in FIG. 5, the stepped horizontal portion 50a of the slope 50 appears bright and the vertical portion 50b appears dark, and this brightness and darkness creates a three-dimensional effect and a sense of depth.

However, this downlight has a vertical portion of 50
Since the light is emitted horizontally from b, the light distribution has the disadvantage of being a diffused light distribution _P1 as shown in FIG.

[Purpose of invention]

The purpose of this invention is to provide a downlight that has the above-mentioned globe and is capable of concentrating and distributing light.

[Disclosure of invention]

The downlight of this invention is a downlight in which a globe with an inverted trapezoid cross section and a step-like slope is provided in the opening of the downlight body, and the periphery of the globe is covered and the slope is transmitted horizontally. The device is characterized by being provided with a cylindrical condensing reflector that reflects the reflected light downward.

According to the configuration of this invention, since the periphery of the globe is covered with a condensing reflector plate, the light transmitted in the horizontal direction from the stepped slope of the globe is reflected downward, so that a condensed light distribution can be obtained. Also, since the area around the globe is covered with a light condensing reflector, it has a sleek appearance.

Embodiment A first embodiment of this invention will be described based on FIGS. 1 and 2. That is, this downlight includes a downlight main body 1, a globe 2, and a condensing reflector plate 3.

The downlight main body 1 has a cylindrical shape having a top 4 and an opening 11 at the bottom end, and a lamp socket 5 is attached to the top 4. The downlight main body 1 is inserted into an embedded hole 7 in a ceiling 6 and fixed to the ceiling 6 with a fixture (not shown). 8 is a lamp.

The globe 2 has an inverted trapezoidal cross section with a flat lower end 10 and a stepped slope 9, and is provided in an opening 11 of the downlight body 1. The globe 2 is made of glass and extends into the downlight body 1 to such an extent that its lower end 10 is flush with the opening 11 of the downlight body 1.

The condensing reflector plate 3 has a cylindrical shape that covers the slope 9 of the globe 2 whose slope 9 has a stepped shape and reflects downwardly the light that has passed through the slope 9 in the horizontal direction. The condensing reflector plate 3 supports the upper edge of the globe 2 at its curved upper end, and the collar 12 at its lower end is in contact with the lower surface of the ceiling 6. Further, the condensing reflector plate 3 is provided on the downlight body 1 so as to be movable up and down by a known spring (not shown), thereby making it possible to replace the lamp.

This downlight emits light from the lower end 10 of the globe 2 and the stepped slope 9 when the lamp 8 is turned on.
Vertical light L ₁ that passes through the horizontal part of 9, and horizontal light L ₂ that passes through the vertical part of the stepped slope 9.
It is divided into The light _L2 enters the condensing reflector plate 3 and is reflected downward.

According to this embodiment, since the periphery of the globe 2 is covered with the condensing reflector plate 3, the light transmitted in the horizontal direction from the stepped slope 9 of the globe 2 is reflected downward, so that a condensed light distribution is obtained. It will be done. For example, the second
The light distribution _P2 shown in the figure can be obtained, improving the efficiency of the fixture as a downlight. Furthermore, since the periphery of the globe 2 is covered by the condensing reflector plate 3, it has a clean appearance.

A second embodiment of this invention is shown in FIG. That is, in contrast to the condensing reflector 3 of the first embodiment, which surrounded the entire slope 9 of the globe 2, this downlight surrounds only a part of the slope 9 of the globe 2, and the lower end 1 of the globe 2
0 protrudes from the downlight main body 1. Therefore, it allows light distribution to some extent in the lateral direction.

[Effect of idea]

According to the downlight of this invention, since the periphery of the globe is covered with a condensing reflector plate, the light transmitted in the horizontal direction from the stepped slope of the globe is reflected downward, so that a condensed light distribution can be obtained. Additionally, since the area around the glove is covered with the light condensing reflector, it has the effect of giving the glove a sleek appearance.

[Brief explanation of drawings]

Fig. 1 is a partial sectional side view of the first embodiment of this invention, Fig. 2 is an explanatory diagram of light distribution, Fig. 3 is a partial sectional view of the second embodiment, and Fig. 4 is an explanatory diagram of the conventional example. , 5th
The figure is a partially enlarged view of the glove. 1...Downlight body, 2...Glove, 3
...Condensing reflector, 9... Slope, 11... Opening.

Claims (1)

[Scope of utility model registration request] In a downlight in which a globe having an inverted trapezoidal cross section and a stepped slope is provided in an opening of a downlight main body, the periphery of the globe is covered to reflect downward the light that has passed through the slope horizontally. A downlight characterized by having a cylindrical condensing reflector.