JPH0449946B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device installed on the ceiling of a room to observe the positions and movements of celestial bodies.

[Conventional technology]

Conventionally, a simple constellation board made of paper or the like has existed as a teaching tool for displaying constellations. Planetariums also existed as large-scale, high-performance devices.

[Problem that the invention seeks to solve]

Among these, the constellation board used as a teaching tool was placed on a desk or the like and observed from above, so it was far from the experience of looking up at the sky and seeing the celestial bodies. In addition, planetariums require a dark room with a dedicated dome and are extremely expensive, making them difficult to use in general households.

The present invention aims to provide a celestial body display device that can be easily installed in the living room of a general household and also serves as a lighting device.

[Means for solving problems]

The celestial body display device of the present invention is made of an opaque plate-like material, has a large number of small holes corresponding to celestial bodies, and has constellation figures related to these small holes drawn on the lower surface. It has a constellation board. The above small through hole is
It is desirable to have different hole diameters depending on the brightness of the celestial body.

The constellation board is rotatably and movably installed below the canopy whose lower surface reflects light diffusely. It is desirable that the rotation and elevation of the constellation board be electrically controlled and remotely controlled, but the rotation and elevation may also be performed manually.

A light source consisting of a fluorescent lamp or an incandescent lamp is placed on the side of the constellation board at a height midway between the raised and lowered positions of the constellation board.

[Effect]

When the constellation disk is in the lowered position, the light from the light source diffusely reflected from the underside of the canopy can be seen through each of the small holes in the constellation disk, making these small holes look like shining celestial bodies in the night sky. By gradually rotating the constellation disk, you can observe from below how the celestial bodies rotate over time.

Next, when the constellation disk is in the raised position, the light from the light source illuminates the bottom surface of the constellation disk, so you can observe the small through holes in the constellation disk as sunspots, and at the same time observe the constellation shapes drawn on them. can do. In this case as well, by gradually rotating the constellation board,
You can observe the rotation of celestial bodies and constellations over time from below.

In addition, when the constellation board is in the raised position, the light from the light source is reflected by the constellation board and indirectly illuminates the room, so it can also be used as a lighting device.

〔Example〕

In FIGS. 1 and 2, reference numeral 1 denotes an outer box, which is composed of a peripheral wall 2, a canopy 3 that closes the upper end of the peripheral wall 2, and an annular mounting seat 4 connected to the lower end of the peripheral wall 2.
The lower surface of the canopy 3 is coated with, for example, a light gray paint that diffusely reflects light.

Vertical guide rods 5 are supported at opposing positions between the canopy 3 and the mounting seat 4, and each guide rod 5
A sleeve 6 is fitted in the sleeve 6 so as to be movable up and down. 2
A beam 7 is passed between the sleeves 6, and the beam 7 is suspended by wire ropes 8, 8, and the other ends of the wire ropes 8, 8 are connected to an electric winding machine via pulleys 9, 10. 11.

A low-speed electric motor 12 is attached to the center of the beam 7,
The lower end of the rotating shaft 13 hanging down from now is the constellation board 1
It supports the center of 4. The constellation board 14 is a disc made of an opaque plate-like material, with small through holes 15, 15... bored in positions corresponding to the celestial bodies, and constellations shown on the bottom surface as shown in Figure 3. Drawings 16, 16 shown
…or a picture is painted on it. Below the constellation board 14, transparent plates 17 are stacked at a slight interval,
The transparent plate 17 is supported by the sleeve 6. On the transparent plate 17, a field of view display 18 shown in FIG. 3, lines and indicators indicating directions, etc. are drawn.

A light source 19 is attached to the peripheral wall 2 at a position lower than the raised position of the constellation board 14 shown in FIG. 1 and higher than the lowered position of the constellation board 14 shown in FIG.

The above device can be installed by drilling a window hole 21 in the ceiling 20 of a room, fixing the mounting seat of the outer box 1 on the edge of the hole, and attaching a decorative edge 22 to the edge of the hole. . The decorative edge 22 has a raised portion 23 so that the light from the light source 19 does not directly enter the eye.

In the above-mentioned apparatus, when the constellation board 14 is placed in the raised position and the light source 19 is turned on as shown in FIG. Illuminated indirectly. When the electric motor 12 is rotated, the constellation board 14 is gradually rotated. Next, electric winding machine 1
1 to lower the constellation board 14 to the position shown in FIG.
The small through holes 15, 15... can be observed from below as if they were shining celestial bodies in the night sky, and by driving the electric motor 12, the movement of the celestial bodies can be observed.

Note that instead of the transparent plate 17, a light-shielding plate having a window hole of the same shape as the visual field display 18 may be installed above the constellation board 14 in a non-rotatable manner, and in that case, it can be observed according to the season or time. Only astronomical objects are displayed.

〔Effect of the invention〕

As described above, according to this invention, celestial bodies can be displayed in a realistic manner with a relatively simple structure, and when the constellation board is raised, the constellations are displayed, which is extremely convenient for teaching. It can also serve as interior decoration and lighting.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the embodiment of the present invention when displaying constellations, FIG. 2 is a longitudinal sectional view of the embodiment when displaying celestial bodies, and FIG. 3 is a bottom view of the constellation board of the embodiment. 3...Canopy, 11...Electric winder (part of the constellation board lifting device), 12...Low speed electric motor (constellation board rotating device), 14...Constellation board, 15...Small through hole, 16
...Constellation figure, 19...Light source.

Claims (1)

[Claims] 1. A constellation board made of an opaque plate-like material with many small holes corresponding to celestial bodies and with constellation figures related to these small holes drawn on the bottom surface, with a diffusely reflective bottom surface. A celestial body display device comprising: a light source rotatably and movably provided below a canopy having a canopy, the light source being provided at a height intermediate between a raised position and a lowered position of the constellation board on the side of the constellation board.