Patent Number: 
Section: claims

1. A cooling device component, comprising:at least one heat shield made from a material selected from the group consisting of tungsten, a tungsten alloy, a graphitic material, and a carbidic material, said at least one heat shield having a through-hole formed therein;at least one structural part made from a material having a tensile strength at room temperature of >300 MPa and an electrical resistivity of >0.04 Ohm mm2m−1;said heat shield and said structural part being metallurgically joined to one another; andat least one cooling pipe for carrying coolant through said heat shield. 2. The cooling device component according to claim 1, wherein said heat shield and said cooling pipe are metallurgically joined to one another. 3. The cooling device component according to claim 1, wherein said heat shield has a projected length l, a projected width b, and a joining area for joining to said structural part, and the projected said joining area is >0.3·l·b. 4. The cooling device component according to claim 3, wherein the projected joining area is >0.8·l·b. 5. The cooling device component according to claim 3, wherein said joining area is a planar surface. 6. The cooling device component according to claim 3, wherein said joining area is structured in form. 7. The cooling device component according to claim 1, which comprises an interlayer of a ductile material with a hardness of <300 HV introduced between said heat shield and said structural part. 8. The cooling device component according to claim 7, wherein said interlayer consists of a copper-based material. 9. The cooling device component according to claim 7, wherein said interlayer is formed with a stress-relief notch. 10. The cooling device component according to claim 7, wherein said interlayer has a thickness from 0.01 to 5 mm. 11. The cooling device component according to claim 1, which comprises an interlayer of a ductile material with a hardness of <300 HV disposed between said heat shield and said cooling pipe. 12. The cooling device component according to claim 11, wherein said interlayer consists of copper. 13. The cooling device component according to claim 1, wherein said structural part has a cross section narrowing with an increasing distance from said joining area. 14. The cooling device component according to claim 1, wherein said structural part consists of a material selected from the group of Fe-based material, Ti-based material, and Ni-based material. 15. The cooling device component according to claim 14, wherein said structural part consists of a material selected from the group consisting of austenitic steel, ferritic steel, ferritic-martensitic steel, or an oxide dispersion-strengthened material. 16. The cooling device component according to claim 1, wherein said structural part has a relative magnetic permeability of less than 1.2. 17. The cooling device component according to claim 1, wherein at least one of said heat shield and said structural part is formed with a radius or a bevel in a region of said joining area. 18. The cooling device component according to claim 1, wherein said through-hole is formed as a continuous bore. 19. The cooling device component according to claim 1, wherein said cooling pipe consists of a copper-based material. 20. The cooling device component according to claim 1, wherein said structural part is joined to a support element by way of a weld. 21. The cooling device component according to claim 1, wherein said structural part is mechanically connected to a support element with a rigid bolt connection by way of one or more fins. 22. The cooling device component according to claim 1, wherein said structural part is connected to a support element by way of a sliding mechanical connection allowing a relative movement between said structural part and said support element. 23. The cooling device component according to claim 22, wherein said sliding mechanical connection is a bolt connection. 24. The cooling device component according to claim 1 configured as a first wall component in a fusion reactor. 25. The cooling device component according to claim 24 configured as a diverter.