Housing device for hand-held power tool

1. A housing device for a hand-held power tool comprising

a housing which is provided to receive an electric motor of the power tool;

at least one see-through region composed of a transparent plastic, wherein said at least one see-through region is distinct from said housing and fastened to said housing and forms an exterior side face oriented to an exterior of the housing device and an interior side face opposite to the exterior side face and oriented to an interior of the housing device; and

an element selected from the group consisting of an information element, a signal element, and both, which is arranged on the interior side face of the see-through region, wherein said element selected from the group consisting of an information element, a signal element, and both, is provided with at least a first and a second symbol and

a first and second illuminating element which are distinct from said element selected from the group consisting of an information element, a signal element and both, and which are covered by said see-through region and said element selected from the group consisting of an information element, a signal element, and both, and wherein the first symbol is illuminated by the first illuminating element in a first operating mode of the hand-held power tool and the second symbol is illuminated by the second illuminating element in a second operating mode of the hand-held power tool.

2. A housing device for a hand-held power tool as defined in claim 1 ; and further comprising at least one illuminating element for illuminating said interior side face of said see-through region.

3. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating element is configured so as to be activated depending on an operating mode of a hand-held power tool that includes said see-through region.

4. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating element is configured so as to be activated depending on a speed of a hand-held power tool that includes said see-through region.

5. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating element is distinct from said see-through region and is configured as an element which is cast with said see-through region.

6. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating element is configured as a light-emitting diode.

7. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating unit includes a light exit surface.

8. A housing device for a hand-held power tool as defined in claim 2 , wherein said illuminating element is configured as a surface-mountable light-emitting diode.

9. A housing device for a hand-held power tool as defined in claim 2 ; and further comprising a control unit for actuating said illuminating element depending on an operating mode of hand-held power tool that includes said see-through region.

10. A housing device for a hand-held power tool as defined in claim 2 ; and further comprising a control unit for turning said illuminating element on and off periodically in at least one operating mode.

11. A housing device for a hand-held power tool as defined in claim 1 , wherein said interior side face of said see-through region includes, in at least one subregion, a mask that is impermeable to at least one part of a visible optical spectrum.

12. A housing device for a hand-held power tool as defined in claim 11 , wherein said mask is configured as a mask printed on said interior side face of said see-through region.

13. A housing device for a hand-held power tool as defined in claim 11 , wherein said element selected from the group consisting of an information element, a signal element, and both, is configured as said light-impermeable mask.

14. A housing device for a hand-held power tool as defined in claim 13 , wherein said element selected from the group consisting of an information element, a signal element, and both, is configured as an element selected from the group consisting of a corporate logo, a product label, a figure, a word and a number.

15. A housing device for a hand-held power tool as defined in claim 1 , wherein said element selected from the group consisting of said information element, said signal element and both is a product label.

16. A housing device for a hand-held power tool as defined in claim 1 , wherein said see-through region is configured as an elastic see-through region.

17. A housing device for a hand-held power tool as defined in claim 1 ; and further comprising at least one switch element being covered by said see-through region for switching an operating mode of a hand-held power tool that includes said see-through region.

18. A housing device for a hand-held power tool is defined in claim 17 , wherein said switch element is configured as a flat foil switch.

19. A housing device for a hand-held power tool as defined in claim 1 , wherein said see-through region is configured as a lettering motif.

20. A hand-held power tool, comprising

a housing which is provided to receive an electric motor of the power tool;

at least one see-through region composed of a transparent plastic, wherein said at least one see-through region is distinct from said housing and fastened to said housing and forms an exterior side face oriented to an exterior of the housing device and an interior side face opposite to the exterior side face and oriented to an interior of the housing device; and

an element selected from the group consisting of an information element, a signal element, and both, which is arranged on the interior side face of the see-through region, wherein said element selected from the group consisting of an information element, a signal element, and both, is provided with at least a first and a second symbol and

a first and a second illuminating element which are distinct from said element selected from the group consisting of an information element, a signal element and both, and which are covered by said see-through region and said element selected from the group consisting of an information element, a signal element, and both, and wherein the first symbol is illuminated by the first illuminating element in a first operating mode of the hand-held power tool and the second symbol is illuminated by the second illuminating element in a second operating mode of the hand-held power tool.

21. A housing device for a hand-held power tool as defined in claim 1 , wherein said element selected from the group consisting of an information element, a signal element, and both, is distinct from said see-through region.