Abstract:
A hand dryer equipped with video and audio playing functions aims to provide the basic hand drying function and to include a video and audio displaying device so that when users use the hand dryer or pass by the hand dryer, the video and audio displaying device broadcasts dynamic video and audio data, thereby to meet the modern multimedia requirements and enhance the added value of the hand dryer.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a hand dryer and particularly to a hand dryer equipped with video and audio playing functions.  
       BACKGROUND OF THE INVENTION  
       [0002]     Hand dryers are widely used in hotels, restaurants, shopping malls or the like to enable users to dry hands after washing without paper or towels in the event that the users do not bring paper tissues or a handkerchief with them.  
         [0003]     Besides providing the basic function of hand drying, some hand dryers also provide additional functions. For instance, R.O.C. Patent Publication No. M247158 discloses a “Hand dryer equipped with a displaying device”. It mainly includes a displaying device which is connected to a control circuit inside the hand dryer. Through the control circuit the displaying device can display preset pictures or texts, such as logos of vendors, trademarks, merchandise advertisements, promotional messages, or the like.  
         [0004]     However, the aforesaid hand dryer equipped with the displaying device can provide only “static” pictures or texts. It is plain and unexciting, and does not have much appeal to users these days when multimedia video and audio articles flourish almost everywhere. In short, the conventional hand dryer equipped with a displaying device cannot provide “dynamic” video and audio functions. This becomes a big disadvantage.  
       SUMMARY OF THE INVENTION  
       [0005]     Therefore the object of the present invention is to provide a hand dryer equipped with video and audio playing functions so that besides providing the basic hand drying function, it also can broadcast dynamic video and audio data.  
         [0006]     To achieve the foregoing object, the hand dryer equipped with video and audio playing functions according to the invention mainly includes a case, a blower, a control circuit board, a first sensor, a video and audio displaying device, and a second sensor. The case has an air outlet. The blower is located in the case corresponding to the air outlet. The control circuit board is located in the case and connected electrically to the blower. The first sensor is exposed outside the case through the air outlet and connected electrically to the control circuit board to provide a first signal to the control circuit board to actuate the blower. The video and audio displaying device is located in the case and has a display area exposed outside the case. The second sensor is exposed outside the case and connected electrically to the video and audio displaying device, and provides a second signal to the video and audio displaying device to broadcast dynamic video and audio data.  
         [0007]     In short, the hand dryer equipped with video and audio playing functions according to the invention, in addition to providing the basic function of drying user&#39;s hands when the user moves close to the hand dryer, also can broadcast dynamic video and audio data while the user dries his/her hands or passes by the hand dryer. Thus it can meet varying video and audio requirements of the modern time.  
         [0008]     The foregoing, as well as additional objects, features, and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]      FIG. 1  is a fragmentary exploded view of a first embodiment of the hand dryer equipped with video and audio functions of the present invention.  
         [0010]      FIG. 2  is a perspective view of the first embodiment of the hand dryer equipped with video and audio functions of the present invention.  
         [0011]      FIG. 3  is an operation flow chart of the first embodiment of the hand dryer equipped with video and audio functions of the present invention.  
         [0012]      FIG. 4  is a fragmentary exploded view of a second embodiment of the hand dryer equipped with video and audio functions of the present invention.  
         [0013]      FIG. 5  is a perspective view of the second embodiment of the hand dryer equipped with video and audio functions of the present invention.  
         [0014]      FIG. 6  is an operation flow chart of the second embodiment of the hand dryer equipped with video and audio functions of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0015]     Please refer to  FIGS. 1 and 2  for a first embodiment of the invention. The hand dryer equipped with video and audio playing functions  100  according to the invention mainly includes a case  110 , a blower  120 , a control circuit board  130 , a first sensor  140 , a video and audio displaying device  150  and a second sensor  160 .  
         [0016]     The case  110  includes a main case  110   a  and a base seat  110   b  that are coupled together. The blower  120 , control circuit board  130 , first sensor  140 , and video and audio displaying device  150  are mounted onto the base seat  110   b  and housed in the case  110 . The blower  120  and the first sensor  140  are corresponding to an air outlet  112  located on the main case  110   a,  and are exposed outside the case  110  through the air outlet  112 . The control circuit board  130  is electrically connected to the blower  120  and the first sensor  140 . The first sensor  140  may be an infrared sensor to detect user&#39;s hands when they move close to the air outlet  112  and send a first signal to the control circuit board  130 . The control circuit board  130  actuates the blower  120  to dry user&#39;s hands. To those skilled in the art, the case  110  may include an electric heater  170  which is electrically connected to the control circuit board  130 , and be controlled by the control circuit board  130  to enable the blower  120  to generate a more comfortable heated airflow.  
         [0017]     The video and audio display device  150  is located on the base seat  110   b  and housed in the case  110 . It has a display area  152  which is exposed outside the case  110  through a window  114  formed on the main case  110   a.  In this embodiment, the second sensor  160  such as an infrared sensor is electrically connected to the control circuit board (not shown in the drawings) of the video and audio display device  150 . When a user is using the hand dryer  100  or passing by the hand dryer  100 , the second sensor  160  provides a second signal to the video and audio displaying device  150  to broadcast dynamic video and audio data. As the video and audio displaying device  150  can provide dynamic video and audio data (such as MPEG images files or MP3 music files, or the like), it can further provide dynamic instant information (such as timetables, and the like) or other service contents (such as promotional films, product advertisements, and the like) that are more appealing and can motivate users to see.  
         [0018]     Referring to  FIG. 1 , in the first embodiment, the video and audio displaying device  150  may further include an AV In/Out connection port  156  to connect to an external monitor (not shown in the drawing). The monitor may be located in a control room to synchronously broadcast same type of video and audio information as the video and audio displaying device  150  does to enable the monitoring function to be performed. In addition, the video and audio displaying device  150  may also include a memory slot  158  to receive a memory card (not shown in the drawings) such as a CF or MD card to update the video and audio data. Hence the video and audio displaying device  150  may be formed as a built-in memory or an external memory card.  
         [0019]     Refer to  FIG. 3  for the operation flow chart of the first embodiment of the invention. The operation of the hand dryer and the dynamic video and audio broadcasting operation may be proceeded independently or concurrently. First, a power supply (such as AC 220V) provides electric power required by the hand dryer and the video and audio displaying device. When the first sensor detects a user&#39;s hands (i.e. close to the air outlet), the blower and electric heater are activated to generate heated airflow to dry user&#39;s hands. When user&#39;s hands leave, the heated airflow stops. When a user is using the hand dryer or merely passes by the hand dryer, the second sensor on the video and audio displaying device detects and activates the video and audio displaying device to broadcast dynamic video and audio data. The video and audio displaying device can stop broadcasting according to a set time, or continuously broadcast all day long according to requirements.  
         [0020]     Refer to  FIGS. 4 and 5  for a second embodiment of the invention. It is substantially constructed like the first embodiment previously discussed, and is marked by same numerals for the same elements. Details are omitted. The difference is that the base seat  110   b  has a hatch lid  110   c  which may be lifted and opened from the base seat  110   b.  Therefore the memory card slot  158  on the video and audio displaying device  150  may be exposed without removing the main case  110   a  to make replacing of the memory card easier. Moreover, the case  110  may further include a limit switch  180 . When the hatch lid  110   c  covers the main case  110   a,  it depresses the limit switch  180  to set continuous power supply. When the hatch lid  110   c  is lifted from the case  110 , it is separated from the limit switch  180 , and the power supply is cut off to prevent electric shock so that replacing of the memory card is safer.  
         [0021]     Refer to  FIG. 6  for the operation flow of the second embodiment. It is largely like that of the first embodiment, thus details are omitted. The difference is that an extra step of determining whether the hatch lid is lifted is included to turn on or cut off power supply.  
         [0022]     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.