Lunchbox

Abstract

A lunchbox for storing, transporting and heating solid, paste-like or liquid foodstuffs, particularly foodstuffs ready for consumption. The lunchbox is intended to be easy to handle. The lunchbox has a lid and a housing that can be interconnected. The lunchbox has an electrical heating element, a device for power supply and for controlling the power supply and operating modes, and a sensor arrangement for controlling the temperature of the heating element.

1 - 17 . (canceled) 
     
     
         18 . A lunchbox for storing, transporting, and heating of solid, paste-like, or liquid foodstuffs, the lunchbox comprising a lid and a housing, which can essentially be connected to one another, wherein the lunchbox further comprises an electric heating element, a device for supplying power and controlling the supply of power and operating modes, and a sensor arrangement for temperature control of the heating element. 
     
     
         19 . The lunchbox according to  claim 18 , wherein the heating element has analog and/or digital control and/or sensor control. 
     
     
         20 . The lunchbox according to  claim 18 , wherein the sensor arrangement has at least one analog or digital sensor and at least one heat switch. 
     
     
         21 . The lunchbox according to  claim 20 , wherein a shell to accommodate the food to be heated can be arranged in the housing, and wherein the shell has thermal insulation. 
     
     
         22 . The lunchbox according to  claim 21 , wherein the sensor arrangement further includes an optical sensor arranged in an upper shell of the lunchbox and the at least one analog or digital sensor and at least one heat switch are arranged close to the shell or outside of the shell. 
     
     
         23 . The lunchbox according to  claim 18 , wherein an integrated battery and/or power connection socket for supplying power is arranged on a lower shell of the lunchbox. 
     
     
         24 . The lunchbox according to  claim 18 , wherein the lunchbox can be controlled and operated offline by means of control electronics on the lunchbox and/or online by means of an external control device. 
     
     
         25 . The lunchbox according to  claim 18 , wherein the lunchbox is controllable via Bluetooth or by means of an app via a cell phone or a Cloud application. 
     
     
         26 . The lunchbox according to  claim 18 , wherein the lid and housing can be connected one to the other in an overlying, friction-fit manner or connected to one another in a hinged manner on one longitudinal side, wherein a closure is provided on the opposite longitudinal side. 
     
     
         27 . The lunchbox according to  claim 18 , wherein a shell to accommodate the food to be heated can be arranged in the housing and wherein the shell is provided with a circumferential edge area in an area of a partition between the lid and housing, to which a sealing element is assigned. 
     
     
         28 . The lunchbox according to  claim 18 , wherein a pressure compensation element is provided in the lid. 
     
     
         29 . The lunchbox according to  claim 18 , wherein the lunchbox comprises an upper shell, a lower shell, and a shell to accommodate the food to be heated which can be arranged in the housing and wherein the shell is insertable in the housing or is fixedly arranged as the lower shell. 
     
     
         30 . The lunchbox according to  claim 18 , wherein a shell to accommodate the food to be heated can be arranged in the housing, and wherein the shell has thermal insulation with the thermal insulation and the heating element extending at least above a base of shell and at least partially enclosing side walls of the shell. 
     
     
         31 . The lunchbox according to  claim 18 , wherein the lid is provided with heat insulation and an electric heating element. 
     
     
         32 . The lunchbox according to  claim 18 , wherein circumferential edge areas of the lid and housing are designed to correspond in shape and to fulfill a sealing function. 
     
     
         33 . The lunchbox according to  claim 18 , wherein the electric heating element comprises a heating film. 
     
     
         34 . The lunchbox according to  claim 18 , wherein the lunchbox can be connected to a charging station and wherein at least one of the charging station and the lunchbox is provided with a temperature indicator and/or a weight detector.