1. A convection oven for use in a vehicle, having an oven cavity with an air inlet and an air outlet, an air feed conduit for feeding an air feed into the oven cavity through the air inlet and a heating arrangement for heating the air feed before it is fed into the oven cavity, the heating arrangement comprising a heating device that is electrically powered and being arranged to maintain a temperature of at least 130\xb0 C. in the oven cavity.
2. An oven according to claim 1, in which the heating arrangement comprises a first heating device and a second heating device.
3. An oven according to claim 2, in which the air feed is heated by the first and second heating devices in series.
4. An oven according to claim 2, in which one of said first and second heating devices comprises electrically powered heater elements which are located within the air feed conduct.
5. An oven according to claim 1, in which the first heating device andor the second heating device can be connected to a vehicle motor and can be powered thereby.
6. An oven according to claim 1, in which the first and second heating devices can be powered by power means present on a vehicle motor.
7. An oven according to claim 1, in which at least one of the first and second heating devices comprises a combustion device for generating hot combustion gases which can be used to heat the air feed.
8. An oven according to claim 7, which comprises heat exchange means for passing the hot combustion gases in heat exchange relationship with the air feed.
9. An oven according to claim 1, which further comprises a control device arranged to permit regulation of said first and second heating devices to obtain a desired temperature with the oven cavity.
10. An oven according to claim 1, which further comprises adapter means arranged to permit at least a part of the heating arrangement to be selectively supplied with mains power when desired.
11. An oven according to claim 1, in which the arrangement is such that the oven cavity can be maintained at a temperature of at least 150\xb0 C.
12. An oven according to claim 1, in which the volume of the oven cavity is not more than 0.15 m3.
13. An oven according to claim 1, in which the heating arrangement can generate a temperature of at least 130\xb0 C. when the oven contains 10 kg of food in individual portions of about 400 g.
14. A vehicle comprising an oven according to claim 1.
15. A vehicle according to claim 14, which vehicle is powered by an internal combustion engine.
16. A vehicle according to claim 14, in which there is provided a combustible fuel.
17. A vehicle according to claim 14, in which the vehicle has an internal combustion engine and the oven is eatable in part from an electrical current derived from said engine.
18. A vehicle according to claim 14, which comprises two ovens.
19. A vehicle according to claim 18, in which each oven comprises a respective heating and control arrangement.
20. A vehicle according to claim 18, in which the ovens are heated by a common heating arrangement.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A vehicle-mounted equipment comprising:
command generating means for generating commands corresponding to an input signal;
receiving means for receiving commands transmitted from an information unit;
data generating means for generating display data by interpreting a command when the command is output from said command generating means or when the command is received by said receiving means;
display means for, when the command is output from said command generating means, displaying a screen, based on the display data generated by said data generating means, wherein said data generating means generates display data including layout information of the screen; and
transmitting means for, when the command is received by said receiving means, transmitting the display data generated by said data generating means to the information unit, wherein the layout information produces a layout of the display data, including the layout of at least a map and a command interface, on a display means of the information unit that is substantially identical to a layout of the display data on said display means of said vehicle-mounted equipment.
2. The vehicle-mounted equipment according to claim 1, wherein said data generating means generates a bitmap image as the display data.
3. The vehicle-mounted equipment according to claim 1, wherein, when said receiving means receives a specification indicative of processing capacity of the information unit upon receiving the command, said data generating means generates display data fitted for the information unit in consideration of the processing capacity of the information unit.
4. An information unit comprising:
command generating means for generating a command corresponding to an input signal;
communication means for transmitting the command output from said command generating means to a vehicle-mounted equipment, and for receiving display data transmitted from the vehicle-mounted equipment; and
display means for displaying a screen based on display data received by said communication means, wherein,
when said communication means receives display data including layout information of screen, said display means sets display position of the screen based on the layout information, and
the layout information produces a layout of the display data, including the layout of at least a map and a command interface, on the display means that is substantially identical to a layout of the display data on a display means of the vehicle-mounted equipment.
5. The information unit according to claim 4, wherein, when said communication means receives display data which is a bitmap image, said display means display the bitmap image without generating the screen data from the display data.
6. The information unit according to claim 4, wherein, when the command generated by said command generating means is transmitted to the vehicle-mounted equipment, said communication means transmits a specification indicative of processing capacity of said communication means to the vehicle-mounted equipment.
7. A vehicle-mounted information system comprising:
a vehicle-mounted equipment which, upon receipt of a command, generates display data by interpreting the command and transmits the display data; and
an information unit which transmits the command and which, upon receipt of the display data from said vehicle-mounted equipment, displays a screen based on the display data, wherein the display data includes layout information of the screen, the layout information producing a layout, including the layout of at least a map and a command interface, on the screen that is substantially identical to a layout of the display data on a display means of said vehicle-mounted equipment.
8. The vehicle-mounted information system according to claim 7, wherein, when an information processing unit with capabilities similar to those of said vehicle-mounted equipment is provided outside a vehicle including said vehicle-mounted equipment, said information unit receives, in place of said vehicle-mounted equipment, a command transmitted from said information unit, and transmits setting information of said information processing unit to said vehicle-mounted equipment.