JPS6335447Y2 - - Google Patents

Description

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

[Background technology]

Generally, a luminaire having a fluorescent lamp has a first
It is configured as shown in the figure. That is, a shade body 6 composed of an inner reflector plate 3, an outer reflector plate 4, and a frame body 5 is attached to a device main body 2 that incorporates a stabilizer 1.
The ceiling part 7 of the appliance main body 2 is attached to the ceiling surface 8 of a building to illuminate the room. In a lighting fixture with such a structure, the light emitted from the fluorescent lamp 9 is irradiated into the room as shown by the arrow, thereby illuminating the room. Since the reflection of light from the floor surface is blocked by the shade body 6, not much light reaches the portion 8a of the ceiling surface 8a.
There is a difference in brightness (brightness) between the image and other parts of the image. That is, the upper ceiling surface portion 8a of the shade body 6 becomes dark because the reflection from the floor is blocked by the shade body 6 as described above, but the other ceiling surface portions are brightly illuminated due to the reflection from the floor. It is being done. If the upper ceiling surface portion 8a of the shade body 6 becomes dark in this way, the entire lighting fixture will appear dark, which is not preferable. On the contrary, the upper ceiling surface portion 8a of the shade body 6
If the ceiling is illuminated too brightly, the ceiling surface area 8a will become brighter than other ceiling surface areas, which will make the lighting fixtures stand out and create a restless feeling, which is also undesirable. .

[Purpose of invention]

The purpose of this invention is to provide a lighting fixture that does not give a dark or restless feeling.

[Disclosure of invention]

In order to achieve the above object, the lighting device of this invention has an elongated rectangular hole in the part of the shade directly above the fluorescent lamp, the longitudinal direction of which is inclined with respect to the central axis of the fluorescent lamp. The structure is such that a large number of fluorescent lamps are formed parallel to the central axis of the fluorescent lamp at appropriate intervals.

Next, this invention will be explained in detail based on examples.

FIGS. 2 and 3 show an embodiment of this invention. This lighting fixture has an elongated rectangular hole 12 in a portion directly above the fluorescent lamp in an outer reflecting plate 11 constituting a shade body 10, with the longitudinal direction of the hole 12 relative to the central axis 13 of the fluorescent lamp indicated by a dashed line. A large number of fluorescent lamps are formed at predetermined intervals parallel to the central axis 13 of the fluorescent lamp in an inclined state. Since the other parts are the same as those of the lighting fixture shown in FIG. 1, corresponding parts will be given the same reference numerals and repeated explanations will be omitted.

With this configuration, as shown in FIG.
2 and the angle θ between the central axis 14 of the elongated rectangular hole 12 and the central axis 13 of the fluorescent lamp, and the amount of light that passes through the elongated rectangular hole 12 and reaches the ceiling surface as appropriate. You will be able to adjust it to As a result, effects such as being able to adjust the degree of brightness of the upper ceiling surface portion of the shade body 10 and the other ceiling surface portions to be approximately equal can be obtained. That is, as described above, by appropriately selecting the dimension a shown in FIG. 4, as shown in FIG. The shadow of 2a can now be blurred. In addition, by appropriately selecting the width b of the elongated rectangular hole 12, the amount of light illuminating the ceiling surface 8 can be adjusted appropriately, thereby controlling the brightness of the upper ceiling surface portion 8a of the shade body 10 and the other portions. It becomes possible to adjust the brightness so that there is no difference in brightness. In addition, by appropriately selecting the angle θ between the central axis 14 of the elongated rectangular hole 12 and the central axis 13 of the fluorescent lamp, the elongated rectangular hole 12
The brightness of the upper ceiling surface portion 8a of the shade body 10, which is illuminated by the light emitted from the shade body 10, can be made uniform as a whole. That is, since the elongated rectangular holes 12 are provided at predetermined intervals, only the portion of the ceiling surface 8 directly above the elongated rectangular holes 12 tends to be brightened. By tilting the light lamp with respect to the central axis 13, the boundary between the bright part directly above the elongated rectangular hole 12 and the adjacent part becomes blurred, and the ceiling surface part 8a becomes uniform as a whole. It will become brighter. In addition, since the corners of the elongated rectangular hole 12 are formed at right angles, a shadow formed on the ceiling surface 8 by both end portions perpendicular to the longitudinal direction of the elongated rectangular hole 12 can be seen from other elongated rectangular holes 12. It is possible to blur the linear shadow that is created by the two ends perpendicular to the longitudinal direction of the ceiling surface and the continuous shadow. That is, as shown in FIG. 6b,
If the elongated rectangular hole 12 is made into a parallelogram shape and both ends perpendicular to the longitudinal direction are aligned on the same line, the sixth
As shown in Figure a, a linear shadow is formed on the ceiling surface by the ends perpendicular to the longitudinal direction. However, according to the lighting equipment of this invention, the fourth
As shown in the figure, since the corners of the hole 12 are at right angles, the shadows formed by both ends of the hole 12 perpendicular to the longitudinal direction are irregular. As a result, the shadows formed on the ceiling surface become blurred.

In addition, in the above embodiment, the elongated rectangular hole 12 formed in the part of the cap 10 above the fluorescent lamp on the left side of the instrument body 2, and the cap 10 above the fluorescent lamp on the right side.
Although the elongated rectangular holes 12 formed in the portion are provided axially symmetrically, both elongated rectangular holes 12 may face in the same direction as shown in FIG. Further, the shape of the elongated rectangular hole 12 may be made into a substantially drum-shaped shape by constricting the central portion on the longitudinal side, as shown in FIG.

[Effect of idea]

As mentioned above, the lighting fixture of this invention has a long and narrow rectangular hole in the part of the shade directly above the fluorescent lamp.
With their longitudinal direction inclined with respect to the central axis of the fluorescent lamp, a large number of them are formed parallel to the central axis of the fluorescent lamp at appropriate intervals, so that The brightness of this part and the rest of the ceiling surface can be set to be almost the same, thereby preventing the appliance body from giving a dark or restless feeling. In other words, by controlling the brightness distribution on the ceiling surface by simply combining holes, rather than providing any special cutouts etc. in the shade body, the ceiling surface above the shade body and the rest of the ceiling can be This makes it possible to eliminate the difference in brightness with the surface, and prevents the fixture body from lifting up or making the fixture body look dark.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a conventional example, Fig. 2 is a perspective view of an embodiment of this invention looking down from above, Fig. 3 is a plan view thereof, and Fig. 4 is an explanation of the formation state of the elongated rectangular hole. 5 and 6 are explanatory diagrams of the operation, FIG. 7 is a plan view of another embodiment, and FIG. 8 is an explanatory diagram of a modification of the elongated rectangular hole. 9... Fluorescent lamp, 10... Shade body, 12... Elongated rectangular hole, 13... Central axis.

Claims (1)

[Scope of utility model registration request] In the part of the cap directly above the fluorescent lamp, a large number of elongated rectangular holes are inserted into the central axis of the fluorescent lamp, with the longitudinal direction of each hole being inclined with respect to the central axis of the fluorescent lamp. A lighting fixture characterized in that the lighting fixtures are formed in parallel at appropriate intervals.