Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-04-28
1998-12-01
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340568, 340691, 340693, G08B 13187
Patent
active
058444840
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to theft preventive apparatus, and particularly to a theft preventive apparatus comprising a box attached to an object of theft prevention and having a detecting device for detecting a preliminary stealing act, and an alarm output device for outputting alarm information based on detection information from the detecting device.
Such a theft preventive apparatus is used as attached to an object of theft prevention such as a commodity displayed in a shop, for example, and outputs alarm information when a preliminary stealing act is committed against the object of theft prevention.
The preliminary stealing act refers to an attempt to take an object of theft prevention to which the theft prevention apparatus is attached out of the shop, an attempt to remove the theft prevention apparatus from the object of theft prevention, or the like.
The box of the theft prevention apparatus has a detecting device for detecting the above preliminary stealing act, and outputs alarm information based on the detection information from the detecting device.
The mode of detecting the above preliminary stealing act, generally, comprises receiving an electric wave from a transmitter installed adjacent an entrance of a shop, to detect an attempt to take an object of theft prevention to which the theft preventive apparatus is attached out of the shop, or using a detecting device mounted in the theft prevention apparatus for detecting whether it has been detached from the object of theft prevention, to detect an act of detaching the theft prevention apparatus from the object of theft prevention.
The mode of outputting the alarm information for the above alarm, conventionally, comprises a speaker (buzzer) or the like mounted in the theft preventive apparatus itself to give an alarm sound, or the theft preventive apparatus transmitting an electric wave signal, and a receiver device installed in a predetermined location (out side the theft preventive apparatus) receiving the electric wave signal and giving an alarm sound or the like.
That is, conventionally, the alarm output device for outputting alarm information comprises a speaker for giving an alarm sound or a transmitter for transmitting an electric wave signal.
However, with the conventional construction noted above, it is impossible, where a plurality of theft prevention apparatus are arranged close to one another, to determine instantly which theft prevention apparatus is giving the alarm sound or which theft prevention apparatus is giving the electric wave signal. Thus, improvement is desired.
The present invention has been made having regard to the state of the art noted above, and its object is to provide a theft preventive apparatus for enabling instant determination which one of theft prevention apparatus is outputting alarm information.
A further object of the present invention is to provide a theft preventive apparatus having little chance of malfunction, capable of reliably detecting whether the theft preventive apparatus has been detached or not, and having a high yield of manufacture.
A theft preventive apparatus according to the present invention comprises a box attachable to an object of theft prevention and including detecting means for detecting a preliminary stealing act, and alarm output means for outputting alarm information based on detection information from the detecting means, the box housing light emitting means for emitting light based on the detection information from the detecting means outwardly of the box.
With this construction, when a preliminary stealing act is committed, the alarm output means outputs alarm information (alarm sound or electric wave signal), and the light emitting means emits light outwardly of the box.
Consequently, even if a plurality of theft preventive apparatus are arranged close to one another, an instant determination may be made as to which one of theft prevention apparatus is outputting alarm information, by observing which theft preventive apparatus is emitting light.
Preferably, the box includ
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Fujiuchi Hiroyuki
Ida Tsutomu
Nakajima Mitsuhiko
Takeshita Masaaki
Uchida Keinji
Kubota Corporation
Swann Glen
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