Hand dryer with visible light indicated sensing area

• US 20080256825A1
• Filed: 04/17/2007
• Published: 10/23/2008
• Est. Priority Date: 04/17/2007
• Status: Abandoned Application

• Current Assignee: Hokwang Industries Co., Ltd.
• Original Assignee: Hokwang Industries Co., Ltd.
• Inventors: Hsu, Chi-Chin
• Application Number:
  US11/785,371
• Publication Number:
  US 20080256825A1
• Time in Patent Office: Days
• US Class Current: 34/529
• CPC Class Codes: A47K 10/48 Drying by means of hot air hair-drying devices A45D20/00; curative hot-air baths A61H33/06; electric heating elements H05B

Abstract

A hand dryer with visible light indicated sensing area utilizes a visible light to provide the user a visible indicating area that can be recognized by the naked eyes, so that the user can identify the invisible IR sensing area through the visible indicating area and conveniently put the hands in the sensing area for drying.

Claims

1. A hand dryer with visible light indicated sensing area, comprising:

a hand dryer, for heating an air after acquiring a sensing signal and output the heated air through a blowing entrance;

an IR (infrared ray) sensing device, for outputting an infrared ray through an IR radiator and deciding the output of the sensing signal after an IR receiver detects the infrared ray in a sensing area thereof, and

a visible light indicating device, for outputting a visible light to form an indicating area after acquiring the sensing signal from the IR sensing device so as to inform a user the invisible sensing area, thereby facilitating the user to locate the hands in the sensing area for drying.

2. The hand dryer as claimed in claim 1, wherein the visible light indicating device is an LED (light emitting diode).

3. The hand dryer as claimed in claim 1, wherein the IR radiator is an LED (light emitting diode).

4. The hand dryer as claimed in claim 1, wherein the IR receiver is an IR mirror sensor.

5. The hand dryer as claimed in claim 1, wherein the indicating area is smaller than the sensing area of the IR receiver.