JPH0347575Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention belongs to the field of manufacture, sale, and use of show cases.

(Prior Art) Conventionally, fluorescent lamps have often been used for lighting in show cases, and little consideration has been given to dimming.

(Problems to be solved by invention) Since most conventional lighting uses direct light from fluorescent lamps, jewelry is often exposed to direct light, which not only makes it difficult to provide soft and unique lighting.
There were problems such as difficulty in dimming the light.

(Means to Solve the Problem) However, this idea installs a reflected light projector equipped with an air vent at the top of a transparent container, and also connects an infrared sensor circuit installed near the display case to the light source circuit of the projector. By interposing it, the light rays irradiated by the jewelry are converted into reflected light, creating a soft and unique illumination, and the light is controlled by a sensor, thus solving the above-mentioned conventional problems.

Originally, light bulbs are better than fluorescent lights as a light source for product lighting, but since light bulbs generally generate more heat than fluorescent lights, the temperature inside the show case rises, making fluorescent lights undesirable. is used.

However, by using a reflective beam projector with an exhaust fan, we were able to control the light and successfully prevent the temperature from rising due to lighting. In addition, conventional illuminance inside the show case and indoor lighting remained constant, but by installing infrared sensors at appropriate locations in the room, the lighting brightens when a person approaches the show case, and dims when no one is present. This not only saves electricity, but also helps prevent theft. For the electric light mentioned above, a halogen light bulb can be used in addition to a normal light bulb.

(Function of the invention) Since this invention uses reflected light for illumination, the projected light is extremely soft, and since a light bulb is used, dimming is easy. In addition, by incorporating an infrared sensor circuit into the exhaust fan circuit, the exhaust fan can be activated only when a person is close to the show case and the illuminance is high.

(Example) A reflected light projector 3 with a built-in exhaust fan 2 is installed horizontally on the ceiling of a transparent show case 1. In the reflected light projector, a projection port 5 is provided at the lower part of one side of an opaque cylinder 4 made of metal or synthetic resin, and a projection plate 6 (made of glass) is provided obliquely to one side of the projection port 5. Further, a halogen electric lamp 7 is installed horizontally in the cylinder 4 facing the projection plate 6, and an exhaust fan 2 is installed in the other side of the cylinder 4. In addition, an infrared sensor 8 is installed at a suitable location in the room (the ceiling on the entrance side or the ceiling above the show case). The infrared sensor 8 is interposed in the circuit of the projector. In the figure, 15 is a stand.

In the above embodiment, person 10 is in case 1
When the sensor 8 approaches and enters the warning area 9 of the infrared sensor 8, the sensor 8 operates, and its output signal passes through the identification circuit 19 and the phase control circuit 20 and is applied to the thyristor 21, completing the circuit of the halogen lamp 7. Therefore, the light beam of the halogen electric lamp 7 travels straight as shown by the arrow 11, is then reflected by the reflector 6 as shown by the arrow 12, passes through the projection port 5 as shown by the arrow 13, and reaches the jewel 1.
Irradiate 4.

At the same time as the halogen lamp 7 brightens, the exhaust fan 2
, so arrows 16, 17, 1 are placed inside the cylinder 4.
A flow of air as shown in 8 is generated to cool the area around the halogen electric lamp 7.

The circuit of the halogen electric lamp 7 is, for example, as shown in FIG. 5, and the input to the halogen electric lamp 7 is increased or decreased by the output of the infrared sensor 9, so that it can be dimmed.

(Effects of the invention) That is, according to this invention, a reflected light projector equipped with an air exhaust is installed, and an infrared sensor circuit is connected to the light source circuit of the projector, so that the items inside the case can be illuminated with soft reflected light. At the same time, the area around the light is cooled to prevent temperature rise inside the case, and the illuminance of the light source is automatically increased when a person approaches the case, and automatically decreases when the person is no longer present. There is.

Note that depending on the characteristics of the dimmer, only the illumination intensity can be changed steplessly.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a reflected light projector equipped with an air exhaust device of this invention, Figure 2 is a perspective view showing the effective range of the infrared sensor, Figure 3 is a perspective view of the jewelry show case, and Figure 4 is a perspective view of the same. Similarly, FIG. 5 is a perspective view of another jewelry show case and a circuit diagram. 1...Show case, 2...Exhaust fan, 3...Reflected light projector, 8...Infrared sensor.

Claims (1)

[Claims for Utility Model Registration] 1. A jewelry show case in which a reflected light projector equipped with an air exhaust is installed in the upper part of a transparent container, and an infrared sensor circuit for blinking the light source is interposed in the light source circuit of the projector. 2. A reflected light projector is a utility model consisting of a reflective plate diagonally installed on one side of a cylinder, a light bulb serving as a light source installed on the reflective plate, and an exhaust fan installed on the other side of the cylinder. A jewelry show case as set forth in claim 1. 3. The jewelry show case according to claim 1, wherein the infrared sensor is installed near and above the jewelry show case.