JPS6338488Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to lighting equipment.

[Background technology]

In order to provide light by embedding downlights in ceiling spaces such as atriums that take advantage of the slope of the roof, conventional methods have been to embed a fixture that doubles as a cylindrical reflector in a vertical position in the sloped ceiling, and then attach a lamp inside the fixture. Something was hot (for example, Utility Model No. 57-72507).

However, this conventional example has the disadvantage that the construction becomes complicated because the shape of the embedded hole changes depending on the inclination angle of the sloped ceiling.

[Purpose of invention]

Therefore, the object of this invention is to provide a lighting fixture that can be embedded in the same size of the embedding hole even if the inclination angle of the slanted ceiling is different.

[Disclosure of invention]

This invention consists of an upper reflector of a paraboloid of revolution having an axis perpendicular to the sloping ceiling, and a spherical body that is integrally formed at the lower end of the upper reflector and fits into an embedded hole in the slanted ceiling. a lower reflector having a lower opening edge of the spherical body parallel to the angle of inclination of the slanted ceiling; a fixture body that holds the reflector on the slanted ceiling; and a fixture body that holds the reflector on the slanted ceiling; Now, the reflector includes a lamp disposed inside the reflector.

According to the configuration of this invention, the part that fits into the embedded hole of the reflector is the lower reflector, which is a spherical body.
Even if the angle of inclination is different, the same size of circle can be used. Therefore, construction becomes easier.

An embodiment of this invention is shown in FIGS. 1 to 5. That is, 1 forms the embedded hole 2 in the inclined ceiling. Reference numeral 3 designates the main body of the device, in which a pair of mounting columns 5 are vertically erected from the mounting frame 4, a retaining plate 6 is provided at the upper end of the mounting columns 5, and a mounting spring 7 is provided on the mounting columns 5.
is provided to be movable in its longitudinal direction, a reflector support spring 8 is provided on one side of the holding plate 6 with respect to the mounting column 5, and a terminal block 9 and a lamp socket 10 are provided on the opposite side at a predetermined inclination. There is. The reflector 11 has an upper reflector 12 and a lower reflector 1 with different shapes.
3, a lower end opening edge 15 is formed at the lower end of the lower reflector 13 with respect to the axis 14 of the reflector 11 so as to be inclined at an angle equal to the inclination of the sloped ceiling 1, and a mounting hole 16 is formed at the upper end, and a side part is formed. A lamp insertion hole 17 is formed on the lower side in the inclined direction. As shown in FIG. 5, the upper reflector 12 is a paraboloid of revolution, and the lower reflector 13 is a spherical body and is integrally formed with the upper reflector 12. The manufacturing process is to form a part of the upper reflector 12 and the lower reflector 13 by drawing with a spatula while rotating on the rotating shaft 19 (dashed line part).
9 is rotated to the position of the rotating shaft 20 at an angle equal to the inclination angle α of the inclined ceiling 1, and the lower reflector plate 13 is cut along the line 21. This cutting surface is circular in order to cut a spherical body, and the mounting frame 4 of the instrument main body 3 that fits therein can also be narrowed. Therefore, the embedding hole 2 can be drilled in a perfect circle, and the workability of construction is good.

When the mounting hole 16 of the reflector plate 11 is engaged with the support spring 8 and the lower end opening edge 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 insertion hole 17, and the center of the lamp 18 mounted in the lamp socket 10 is located on the axis 14 of the reflecting plate 11.

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, an axis 14 of the reflecting plate 11 is parallel to a vertical line perpendicular to the floor surface.

FIG. 4 shows reflected light rays (arrows) during lighting, but a lamp insertion hole 17 that does not contribute to the reflection of lamp light is provided on the lower side of the inclined ceiling 1 on the side of the reflector 11 in the direction of inclination. Since the reflection area on the lower side is wider than that on the upper side, it is equalized by forming the holes 17, and therefore the unevenness of reflection in the downward direction is reduced, and the light distribution curve becomes like the one-dot chain line in Fig. 1. As a result, the light distribution curve becomes equal to the normal light distribution curve, and the floor surface is evenly and unevenly illuminated.

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.

[Effect of idea]

As mentioned above, according to the lighting equipment of this invention,
Since the portion of the lower reflector that fits into the embedded hole of the reflector is a spherical body, it can be a circle of the same size even if the angle of inclination is different. This has the effect of making construction easier.

[Brief explanation of the drawing]

Figure 1 is a sectional view of an embodiment of this invention applied, Figure 2 is a sectional view of the instrument, Figure 3 is a perspective view of the reflector, Figure 4 is an illustration of reflected light, and Figure 5. FIG. 2 is an explanatory diagram illustrating a manufacturing process of a reflector. 1...Sloped ceiling, 2...Embedded hole, 3...Appliance body, 11...Reflector, 12...Upper reflector, 13...
... lower reflector, 14 ... axis, 15 ... lower end opening edge, 18 ... lamp.

Claims (1)

[Scope of utility model registration request] an upper reflecting plate of a paraboloid of revolution having an axis in a direction perpendicular to the sloping ceiling; and a spherical body integrally formed at the lower end of the upper reflecting plate and fitting into the embedded hole of the sloping ceiling; a lower reflector whose lower end opening edge of a spherical body is parallel to the angle of inclination of the slanted ceiling; a fixture body that holds the reflector on the slanted ceiling; A lighting fixture comprising a lamp arranged inside the board.