JPH018400Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a desk ornament with an illuminance meter that can measure the brightness of a room.

[Conventional technology]

Conventionally, illuminance meters using a light sensor (CdS), NPN transistor, electromagnetic relay, etc. are generally known.

[Problem that the invention attempts to solve]

However, although the conventional illumination meter can measure the brightness in a room (for example, the brightness at a reading table in a study room), it cannot be placed on a desk as a nice-looking desk ornament. There was a problem that I couldn't solve.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, this invention is characterized by the following structure.

The structure of the ornament stand 7 is such that a pair of left and right columns 2 and 3 are protruded above the battery storage section 1, a light sensor mounting section 4 and a transistor mounting section 5 are provided at the upper end of one of the columns 3, and the other column 2 is provided with a light sensor mounting section 4 and a transistor mounting section 5. A coil attachment part 6 is provided at the upper end, and an optical sensor 8 is attached to the optical sensor attachment part 4 of the ornament stand 7 with the front surface exposed, and a transistor 9 is attached to the transistor attachment part 5 of the ornament stand 7. An electromagnetic coil 10 is installed in the coil attachment part 6 of the ornament stand 7, and a disc magnet 11 whose rotation angle changes according to changes in the magnetic force of the electromagnetic coil 10 is pivotally supported in the coil attachment part 6. A figurine decorative plate 12 shaped like an animal's head is positioned and fixed on the front surface of the figurine stand 7, and this figurine decorative plate 12 has a protruding hole 12a of a magnet rotating shaft 11a and an optical sensor in the center part of both eyes. 4
It is formed in the shape of an animal head (for example, a cat's head shape) with a front surface exposure hole 13, and the magnet rotating shaft 11a protrudes so as to rotate at one eye of the decorative plate 12. A pointer 15 with a weight 14 is attached to the shaft end, a storage battery 17 of the ornament stand 7 and a light sensor 8
, transistor 9 and electromagnetic coil 10 are provided with a light detection electric circuit 18 connected as shown in FIG. 3 so that the indoor brightness can be detected by the movement of the pointer 15. The gist of this article is a desk ornament with an illuminance meter.

〔Example〕

Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings. In the figure, 7 is an ornamental stand integrally molded from synthetic resin, and this ornamental stand 7 has a pair of left and right supports 2 and 3 above the battery storage section 1. A photosensor mounting part 4 and a transistor mounting part 5 are provided at the upper end of the right pillar 3, and a coil mounting part 6 is provided at the upper end of the left pillar 2.

A light sensor (CdS) 8 is attached to the light sensor mounting portion 4 of the ornament stand 7 and exposed at the front,
Moreover, in the transistor mounting part 5 of the ornament stand 7,
An NPN type transistor 9 is attached to the coil mounting portion 6 of the ornament stand 7, and an electromagnetic coil 1 having a coil core 10a wound with nichrome wire.
0 is included. Furthermore, the coil mounting portion 6
A disc magnet 11 whose rotation angle changes according to changes in the magnetic force of the electromagnetic coil 10 is pivotally supported.

Reference numeral 12 designates an ornamental decorative plate 12 modeled after the shape of an animal's head (the illustrated example is a cat's head shape), and this ornamental decorative plate 12 has a protruding hole 12a for a magnet rotating shaft 11a and an optical sensor 4 in the center of both eyes. A front surface exposing hole 13 is provided, and an engaging protrusion 7a,
7b prevents it from coming off and is positioned and fixed. 1
5 is a pointer formed in the shape of a cat's eye, and this pointer 15
has a weight 14, such as a nut fitting, for rotating and returning to the state as shown in FIG. There is.

Reference numeral 18 denotes a photo-detecting electric wire connected to the storage battery 17 of the ornament stand 7, the optical sensor 8, the transistor 9, and the electromagnetic coil 10 as shown in FIG. 3 so that the indoor brightness can be detected by the movement of the pointer 15. circuit 1
8 is shown. Further, 19 is an illuminance scale displayed on the pointer rotating portion of the decorative plate 12.

The desk ornament with the above configuration is used by placing it on a study desk, and when the optical sensor 8 catches light, an electromotive force corresponding to the amount of light is generated in the optical sensor 8, and a corresponding electromotive force is generated in the optical sensor 8. A base current flows to the transistor 9, and due to the amplification effect of the transistor 9, a connector current flows from the power supply battery 17 through the electromagnetic coil 10, and the magnet 11 is rotated by the excitation of the electromagnetic coil 10 by this collector current, causing the disk magnet 11 to rotate. Since the pointer 15 moves along the illuminance scale 19, it is possible to easily check whether the brightness in the room is suitable for reading, etc. by looking at the rotation state of the pointer 19.

[Effect of idea]

Since the desk ornament with an illuminance meter of this invention is as described above, it is not only possible to measure the brightness in a room, for example, the brightness at the reading desk position in a study room, but also to measure the brightness of an animal's head. The shaped ornamental decorative plate 12 has a pointer 15 arranged in the eye part, and has the effect of being able to be placed on a study desk as a good-looking desk ornament.

[Brief explanation of the drawing]

Fig. 1 is a front view of the desk ornament with illuminance meter of this invention, Fig. 2 is a longitudinal sectional view taken along the - line of Fig. 1,
FIG. 3 is an electrical circuit diagram for photodetection. DESCRIPTION OF SYMBOLS 1... Battery storage part, 2, 3... Support column, 4... Optical sensor mounting part, 5... Transistor mounting part, 6
... Coil attachment part, 7 ... Ornament stand, 8 ... Optical sensor, 9 ... Transistor, 10 ... Electromagnetic coil, 11 ... Disk magnet, 11a ... Magnet rotation axis,
12...Decorative plate, 12a...Protrusion hole for magnet rotating shaft, 13...Front exposure hole for optical sensor, 14...
Weight, 15...Pointer, 17...Battery, 18...
...Electrical circuit, 19...Illuminance scale.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of left and right pillars are provided protruding above the battery compartment, and the upper end of one of the pillars has an optical sensor mounting part and the transistor mounting part, and the upper end of the other pillar has a coil. A figurine stand provided with a mounting part, a light sensor mounted on the light sensor mounting part of the figurine stand so as to be exposed from the front, a transistor mounted on the transistor mounting part of the figurine stand, and a coil mounting part of the figurine stand. A built-in electromagnetic coil, a disk magnet pivotally supported on the coil mounting part so that the rotation angle changes depending on changes in the magnetic force of the electromagnetic coil, and a disk magnet formed in the shape of an animal's head and located at the center of both eyes. A figurine decorative plate that is positioned and fixed on the front surface of the figurine stand, which has a protruding hole for a magnet rotating shaft and a front surface exposure hole for a light sensor in its part, and a figurine decorative plate that rotates at one eye part of the figurine decorative plate. A weighted pointer attached to the protruding shaft end of the magnet rotating shaft, a storage battery, a light sensor, a transistor, and an electromagnetic coil of the ornament stand are connected so that the brightness in the room can be detected by the movement of the pointer. A desk ornament with an illuminance meter that is equipped with an electric circuit for light detection. (2) The desk ornament with an illuminance meter according to claim 1, wherein the decorative plate has an illuminance scale displayed on the rotating part of the pointer.