Patent Abstract:
A control panel of a laundry processing machine includes a control substrate having LEDs, a transparent window having transparent protrusions formed to be corresponded to the LEDs, and a display cover having a plurality of ribs which are protruded at a surface of the display cover and placed between the transparent protrusions, thereby one of lights emitted from the LEDs is directed to the corresponding transparent protrusions without being spread elsewhere.

Full Description:
This application claims the benefit of Korean Patent Application No. 2005-43199, filed on May 23, 2005, which is hereby incorporated by reference for all purposes as if fully set forth herein. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to the control panel of a laundry processing machine, and more particularly, to the control panel of a laundry processing machine making the light emitted from plural LEDs only direct to transparent protrusions by protrudingly forming a rib in between plural transparent protrusions. 
   2. Description of the Conventional Art 
   In general, a laundry processing machine refers to a washing machine which uses water, detergent and mechanical movement to clean stains from clothes or bedding (Referred as ‘fabric’ afterwards), a dryer which uses warm dry wind created by a heater to dry wet fabric and a washer dryer which combines washing and drying in one machine. 
     FIG. 1  shows a perspective view of a laundry processing machine according to the conventional arts.  FIG. 2  shows the side cross-section view of a laundry processing machine according to the conventional arts.  FIG. 3  is the cross section view of the control panel of a laundry processing machine according to the conventional arts 
   As shown in  FIG. 1  to  FIG. 3 , a laundry processing machine which uses conventional arts includes a cabinet( 2 ) forming an exterior of the laundry processing machine, a tub( 10 ) disposed in the cabinet( 2 ) filled with the water used, a drum( 12 ) disposed in the tub( 10 ) holding the laundry, a motor( 14 ) rotating the drum( 12 ), a water supply ( 16 ) unit that provides water, and a drain( 18 ) unit that pumps out the used water. 
   An entrance hole( 4 ) is disposed on the front of the cabinet( 2 ) to allow laundry to be entered into the drum( 12 ) and a door is installed to seal the entrance hole( 4 ). 
   A control panel( 30 ) is disposed on the upper frontal part of the cabinet( 2 ) to show the current movement of the machine and control the movement of a laundry processing. 
   As shown in  FIG. 3  a control panel( 30 ) of a laundry processing machine is comprised of a control substrate( 36 ) which holds all sorts of electronic parts such as a rotary switch( 32 ), and LED (Light Emission Diode,  34 ),a rotary knob( 45 ) linked to the rotary switch( 32 ) and a rotating shaft( 33 ) and is used by the user, a LED supporter( 46 ) directing to the light emitted by the LED( 34 ) and linked to the control substrate( 36 ), and a control panel( 38 ) that covers the entire frontal part of the control substrate( 36 ) 
   Also, the control panel( 30 ) of a laundry processing machine comprises the deco( 44 ) which disposes in the opening hole( 40 ) of the control panel( 30 ) and a transparent window in the back of the deco( 44 ). 
   Within the transparent window( 48 ), the plural LEDs( 34 ) emit light and therefore transparent protrusions( 47 ) are placed to correspond to the plural LEDs( 34 ), the transparent protrusions( 47 ) within the deco( 44 ) need plural penetrating holes( 49 ) for it to go through and they are placed. 
   On the back of the transparent window( 48 ), a separate sheet was stuck or an opaque substance was printed so that the light emitted by the LED( 34 ) is not spread other than the transparent protrusions( 47 ). 
   However, a laundry processing machine according to conventional arts has problems such as spreading the light from the LEDs( 34 ) due to poor printing, and the process of printing on the transparent window( 48 ) with an opaque substance in itself was complicate. 
   Also, sticking a separate sheet to the transparent window( 48 ) had its problems as the sheet fell off, so that it allow the light emitted from the LEDs( 34 ) to spread. 
   SUMMARY OF THE INVENTION 
   The present invention originated to solve the mentioned problems and its purpose is to provide a control panel of a laundry processing machine to prevent light spreading from the LED. 
   To achieve the mentioned purpose of the invention, the control panel of a laundry processing machine is composed of a control substrate with plural LEDs in the front and a transparent window which had plural transparent protrusions to the LED lights in the front of control substrate, and between the transparent protrusions, one of the lights emitted from plural LEDs is only directed to corresponding to the transparent protrusions, therefore, preventing light from spreading. 
   The light spread preventing means is the ribs formed protrudingly between the plural transparent protrusions. 
   The control panel of a laundry processing machine is disposed on the front of the transparent window and further included display cover which allows the plural transparent protrusions to penetrate. 
   The light spread preventing means is the ribs formed protrudingly in between the plural transparent protrusions in the display covers. 
   A rotary switch is placed on the control substrate and plural LEDs are placed around the rotary switch according to the circular direction as predetermined interval. 
   The transparent window follows the arc shape of the rotary switch and the platebody. The plural transparent protrusions are in at least one side of the interior or exterior of the platebody but always has its protrusion in back and forth directions. 
   The transparent window is characterized by forming the rib insert holes, for inserting the ribs in between the plural transparent protrusions. 
   The control panel of a laundry processing machine is further including a control substrate and their LED supporters supports the plural LEDs mounted in a control substrate. 
   The light spread preventing means is characterized by forming the ribs protruding in between the plural transparent protrusions within the LED supporter. 
   The transparent window has the rib insert holes made, for the ribs between the plural transparent protrusions. 
   As mentioned in detail above, in the invention of the control panel of a laundry processing machine, light spread preventing means occurs in between the plural transparent protrusions and as one of the lights emitted by LEDs is only directed to counteracting transparent protrusions, LED light will not be spread elsewhere and therefore it is possible to increase user recognition. 
   Also, the light spread preventing means is easier in production by forming protrudingly from the display cover and LED supporter. 
   Additionally, the process of printing an opaque substance or sticking a separate sheet on the transparent window is extracted, hence making the production process cheaper and easier than before. 

   
     BRIEF DESCRIPTION OF THE DRAWING 
       FIG. 1  shows the perspective view of the control panel of a laundry processing machine according to the conventional arts. 
       FIG. 2  shows the side cross-section of the control panel of a laundry processing machine according to the conventional arts. 
       FIG. 3  shows the vertical-sectional diagram of the control panel of a laundry processing machine according to the conventional arts. 
       FIG. 4  shows the disassembled perspective view of the control panel of a laundry processing machine according to the first embodiment of the invention. 
       FIG. 5  shows the rear view of the window in the deco of the control panel of a laundry processing machine according to the first embodiment of the invention. 
       FIG. 6  shows the perspective view of an enlarged version of the LED supporter of the control panel of a laundry processing machine according to the second embodiment of the invention. 
       FIG. 7  shows the perspective view of the window of the control panel of a laundry processing machine according to the third embodiment of the invention. 
     
       
         
               
             
               
               
             
           
               
                   
               
               
                 &lt;Brief description of the signatures in the drawings&gt; 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                  50: The control panel of a laundry processing machine. 
               
               
                   
                  52: Rotary switch 
               
               
                   
                  54: LED 
               
               
                   
                  56: control substrate 
               
               
                   
                  58, 100: LED supporter protrusions 
               
               
                   
                  60, 114: Transparent 
               
               
                   
                  61, 112: platebody 
               
               
                   
                  62, 110: transparent window 
               
               
                   
                  70: The light spread preventing means 
               
               
                   
                  72: display cover 
               
               
                   
                  74: Light display hole 
               
               
                   
                  76: Knob Penetrating Hole 
               
               
                   
                  78: Control Panel 
               
               
                   
                  79: Penetrating Hole 
               
               
                   
                  80: Rotary knob 
               
               
                   
                  82: Shaft 
               
               
                   
                  85: Shaft Penetrating Hole 
               
               
                   
                  87, 104: cell section 
               
               
                   
                 102: Rib 
               
               
                   
                 116: Rib insert hole 
               
               
                   
                   
               
             
          
         
       
     
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Hereafter, by looking at the attached figures, we may explain the examples of the control panel of a laundry processing machine according to the invention. 
   The control panel of a laundry processing machine according to this invention may have several embodiments, hereafter; only the most: appropriate embodiment will be explained. 
     FIG. 4  shows the disassembled perspective view of the control panel of a laundry processing machine according to the first embodiment of the invention.  FIG. 5  shows the rear view of display cover with transparent window according to the first embodiment of the invention. 
   As shown in  FIG. 4 and 5 , the control panel( 50 ) of a laundry processing machine comprises of a control substrate( 56 ) which holds all sorts of electronic parts such as a rotary switch( 52 ), and the plural LEDs( 54 ); a transparent window( 62 ) which has the transparent protrusions( 60 ) corresponded to the plural LEDs( 54 ) and placed in the front of control substrate; the light spread preventing means( 70 ) where LED( 54 ) light only faces the corresponding transparent protrusions( 60 ). 
   The control panel of a laundry processing machine( 50 ) is further comprised of a display cover( 72 ) that allows the plural transparent protrusions to penetrate the frontal part of the transparent window( 62 ); a control panel( 78 ) to create an exterior to cover the control substrate( 56 ). 
   In the display cover( 72 ), a light display hole( 74 ) corresponded to each plural LEDs( 54 ); a knob penetrating hole( 76 ) which the rotary knob( 80 ) combined with the rotary switch( 52 ) that can penetrate in the center are formed. 
   In the control panel( 78 ), penetrating Hole( 79 ) are formed to counteract the knob penetrating hole( 76 ) so that the rotary knob( 80 ) can be externally exposed. 
   In the rotary switch( 52 ), a rotating shaft( 82 ) is formed protrudingly so that it could be connected to the rotary knob( 80 ) and internally, a switching circuit is mounted to allow the rotation of the shaft( 82 ) 
   The plural LEDs are placed around the rotary switch according to the circular direction as predetermined intervals. 
   Also, on the control substrate( 56 ), LED supporters which support the plural LEDs, are mounted. 
   On the LED supporter, a shift penetrating hole which penetrates the rotating shaft( 82 ) of the rotary knob( 80 ) is formed and several cell sections which surrounds each LED is also formed. 
   The plural cell sections are made by protruding the plural walls to surround the plural LEDs. 
   The transparent window( 62 ) has the platebody( 61 ) formed according to the around the rotary switch( 52 ), the plural transparent protrusions are in at least one side of the interior or exterior of the platebody but always has its protrusion in back and forth directions. 
   In this specification, we will explain only an internal extrusion, back and forth, of the plural transparent protrusions( 60 ) in the platebody( 61 ) 
   The diameter of the platebody( 61 ) is formed greater than the diameter of the display cover. 
   The transparent window is made up of transparent material so that light emitted from the LED can be transmitted. 
   The light spread preventing means( 70 ) is the rib protruding in between the plural transparent protrusions( 60 ) on the rear side of the display cover( 72 ). 
   The rib is made up of an opaque material that does not allow the light from the LED( 54 ) to penetrate, and is made integrally when the display cover are injection molded. 
   Hereafter, the following refers to the movement of the control panel of a laundry processing machine. 
   First, when the user turns the rotary knob( 80 ) clockwise or counter clockwise, the shaft( 82 ) in the rotary switch( 52 ) rotates with the rotary knob( 80 ) and this changes the movement of the switching circuit. Due to this change in the switching circuit, a laundry processing machine controls the washing, rinsing or tumble drying depending on the option chosen. 
   When the option is chosen in a laundry processing machine, one of plural LEDs( 54 ) will emit light. 
   The light emitted by LED will transmit the plural transparent protrusions corresponding to the LED and with the rotation of the rotary knob, will externally show the selected option. 
   The rib( 70 ) formed on the rear of the display cover( 72 ) blocks in between the plural transparent protrusions( 60 ) therefore the LED( 54 ) light does not spread, except the transparent protrusions( 60 ) which placed in corresponding locations of back and forth directions. 
   Therefore, external spreading of light will be prevented hence increasing user recognition, and as there is no need to attach a separate sheet or print on the back of the transparent window( 62 ), production process becomes simpler and there is a lower risk of faulty products. 
     FIG. 6  on one hand shows the perspective view of an enlarged version of the LED supporter of the control panel of a laundry processing machine according to the second embodiment of the invention. 
   Because the second embodiment has many similarities with the first embodiment, the same numbers will be used to explain. 
   According to example 2 of the invention, on the control panel( 50 ) of a laundry processing machine, several ribs( 102 ) as a light spread preventing means are protruding on the front part of the LED supporter( 100 ). 
   The LED supporter( 100 ) makes the cell section to form a wall for the plural LEDs( 54 ) and an extension of this is the plural ribs( 102 ) created by the wall between the transparent protrusions( 60 ). 
     FIG. 7  on the other hand shows the perspective view of the window. 
   Because the third embodiment has many similarities with the first embodiment, the same numbers will be used to explain. 
   In regard to the current invention, the transparent window is made up of the platebody ( 112 ) formed by the circular effect, and the frontal part of the platebody( 112 ) is placed with plural transparent protrusions( 114 ) to correspond the plural LEDs( 54 ), while making a rib insert hole( 116 ) on the platebody( 112 ) so that the protruding rib from the LED supporter or display cover can be inserted. 
   Therefore, even if the plural transparent protrusions( 114 ) are made on the front of the platebody( 112 ), the ribs are located in between the plural transparent protrusions hence preventing light from spreading. 
   In accordance with the purpose of the current invention the advantages of the control panel of a laundry processing machine are as follows. 
   As mentioned in detail above, in the invention of the control panel of a laundry processing machine, light spread preventing means occurs in between the plural transparent protrusions and as one of the lights is emitted by the plural LEDs is only directed to corresponding transparent protrusions, LED light will not be spread elsewhere and therefore it is possible to increase user recognition. 
   Also, the light spread preventing means is easier in production because the protrusion occurs in the display cover or in the LED supporter. 
   Also, the process of printing an opaque substance or sticking a separate sheet on the transparent window is extracted, hence making the production cheaper and easier than before.

Technology Classification (CPC): 3