JPH0122171Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to a lighting fixture that is installed embedded in a sloped ceiling.

[Background technology]

When recessed downlights are used to illuminate ceiling spaces such as atriums that take advantage of the slope of the roof, because the ceiling is sloped, conventional downlights can only distribute light at right angles to the ceiling surface.
The drawback was that the illuminance on the bottom surface was uneven.
Furthermore, when the downlight is placed in a vertical position, an unbalanced gap is created between the ceiling opening and the fixture opening, and the shape of the ceiling opening becomes elliptical, resulting in a complicated shape.

[Purpose of invention]

Therefore, the object of this invention is to provide a lighting fixture that can illuminate a floor surface with substantially uniform illuminance, has a circular ceiling opening, and does not create unbalanced gaps.

[Disclosure of invention]

This invention includes a first rotating body reflector whose axis is vertical, and a lower end opening of the first rotating body reflecting plate that is continuous with the lower end opening and whose axis is perpendicular to the ceiling surface of the inclined ceiling, and whose lower end opening is connected to the inclined ceiling. The device includes a second rotating body reflecting plate located in an embedded hole in the ceiling, and a lamp arranged inside the first rotating body reflecting plate. The first rotating body reflector allows the floor surface to be illuminated substantially uniformly, and the second rotating body reflector allows the embedding hole to be circular, and is easy to align with the opening of the reflector plate, without creating an unbalanced gap.

A first embodiment of this invention is shown in FIGS. 1 to 4. That is, 1 forms the embedded hole 2 in the inclined ceiling. Reference numeral 3 denotes the main body of the device, in which a pair of mounting columns 5 are vertically erected from a mounting frame 4, a retaining plate 6 is provided at the upper end of the mounting columns 5, and a mounting spring 7 is attached to the mounting columns 5 so as to be movable in the longitudinal direction thereof. A reflector support spring 8 is provided on one side of the holding plate 6 relative to the mounting post 5, and a terminal block 9 and a lamp socket 10 are provided on the opposite side at a predetermined angle.
The reflecting plate 11 consists of a first rotating body reflecting plate 12 and a second rotating body reflecting plate 13 having different shapes as shown in FIGS. 2 to 4. As shown in the figure, the first rotating body reflecting plate 12 is The axis 14 is vertical, whereas the axis 14' of the second rotating body reflector 13 is perpendicular to the ceiling surface of the sloped ceiling 1, and its lower end forms a circular opening 15 parallel to the slope of the sloped ceiling 1. A mounting hole 16 is formed at the upper end of the reflecting plate 11, and a lamp insertion hole 17 is formed at the lower side of the reflecting plate 11 in the inclined direction.

When the mounting hole 16 of the reflector plate 11 is engaged with the support spring 8 and the edge of the opening 15 is engaged with the mounting frame 4, the reflector plate 11 is attached to the instrument main body 3 in the state shown in FIG. The lamp socket 10 enters through the lamp insertion hole 17, and the center of the lamp 18 attached to the lamp socket 10 is aligned with the first rotating body reflector 12.
is located on the axis 14 of.

To install on the sloped ceiling 1, insert the main body 3 into the embedding hole 2, and with the mounting frame 4 locked to the edge of the embedding hole 2, press the mounting spring 7 against the back side of the sloped ceiling 1. and hold the instrument body 3. In this state, the appliance main body 3 is installed perpendicular to the inclined ceiling 1, but is inclined with respect to the floor surface, and the lamp socket 10 is placed in a horizontal position due to the angle setting at this time. Further, a reflecting plate 11 is detachably attached to the support spring 8, and at this time, the axis 14 of the reflecting plate 12 is perpendicular to the floor surface, and the opening 15 is connected to the embedded hole 2.
The mounting frame 4 is disposed concentrically with the hole edge.

FIG. 4 shows reflected light rays (arrows) during lighting, and although the floor surface is approximately uniformly illuminated by the first rotating body reflecting plate 12, the lamp insertion hole 17, which does not contribute to the reflection of lamp light, is located on the reflecting plate 11. Sloped ceiling 1 on the side of
The lamp is provided on the lower side in the direction of inclination, and since the lower side has a wider reflection area than the upper side due to the second rotating body reflector 13, the lamp insertion hole 17 is formed, thereby reducing the unevenness of downward reflection. As a result, the light distribution curve becomes like the one-dot chain line in FIG. 1, which is equal to the normal light distribution curve, and the floor surface is illuminated more evenly and evenly.

Furthermore, since the lamp socket 10 is inserted into the reflector plate 11 from the side in a horizontal position, the height of the apparatus is reduced, and the parts can be installed on a shallow ceiling without protruding from the embedding holes.

With this configuration, the illuminance on the floor becomes substantially uniform due to the first rotating body reflecting plate 12, and the shape of the embedded hole 2 in the ceiling surface becomes circular due to the second rotating body reflecting plate 13, making it easy to process. Moreover, an unbalanced gap is not created between the mounting frame 4 and the opening 14, and the shape of the mounting frame 4 can be simplified.

A second embodiment of this invention is shown in FIG. That is, regarding the reflecting plate, the first rotating body reflecting plate 12' of the reflecting plate 11' is made into a paraboloid of rotation, and the second rotating body reflecting plate 13' is made into a spherical shape and integrally formed with the reflecting plate 12'. be. This reflecting plate 11' is processed by a spatula diaphragm, and first, while rotating it on the rotating shaft 19, a part of the first rotating body reflecting plate 12' and the second rotating body reflecting plate 13' is formed (dotted line part). . Next, the rotating shaft 19 is moved to the rotating shaft 20 in accordance with the ceiling angle α of the inclined ceiling 1, and the second rotating body reflecting plate 13'
Cut at line 21. This cutting surface is circular in order to cut the sphere, and the mounting frame 4 that fits therein can also be narrowed. Therefore, it can be manufactured at a lower cost than when it is manufactured by press working, and the ceiling embedded hole 2 can be drilled in a perfect circle, making the work easier. The other configurations are the same as in the first embodiment.

[Effect of idea]

As mentioned above, according to the lighting equipment of this invention,
Since the axis of the first rotating body reflector is vertical, the first
The rotating body reflector allows the floor surface to be illuminated with approximately uniform illuminance, and since the second rotating body reflector is perpendicular to the ceiling surface, the embedded hole is circular and has good reflection. It has the effect that it is easy to align with the plate opening and no unbalanced gaps occur.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the first embodiment of the invention, Fig. 2 is a cross-sectional view of the instrument, Fig. 3 is a perspective view of the reflector, Fig. 4 is an illustration of reflected light, and Fig. 4 is a cross-sectional view of the device. 5
The figure is a side view of the second embodiment. 1... Slanted ceiling, 2... Embedded hole, 3... Appliance body, 11, 11'... Reflector plate, 12, 12'... First rotating body reflector, 13, 13'... Second rotating body reflector, 15...aperture, 18...lamp.

Claims (1)

[Claims for Utility Model Registration] (1) A first rotating body reflector whose axis is vertical, and a first rotating body reflecting plate that is continuous with the lower end opening of the first rotating body reflector and whose axis is perpendicular to the ceiling surface of the sloped ceiling. and a second rotating body reflector whose lower end opening is located in the embedded hole of the sloping ceiling, and a lamp disposed inside the first rotating body reflector. (2) The lighting fixture according to claim 1, wherein the second rotating body reflecting plate is formed of a part of a sphere.