Helmet having an evaporation cooler

Abstract

A helmet, in particular to a bicycle helmet, having a plurality of ventilation openings and at least one evaporation cooler that is arranged in a ventilation opening.

Claims

1. A helmet having a plurality of ventilation openings and at least one evaporation cooler that is arranged in a ventilation opening, wherein the evaporation cooler only comprises a lattice structure that defines a plurality of evaporation openings that are bounded by webs of the evaporation cooler, the plurality of evaporation openings are dimensioned to be spanned by a film of a cooling fluid, wherein the lattice structure is bend-proof, wherein the evaporation openings each have a hexagonal shape.

2. The helmet in accordance with claim 1, wherein the helmet is a bicycle helmet.

3. The helmet in accordance with claim 1, wherein the evaporation cooler is arranged in a ventilation opening that is in a rear region of the helmet.

4. The helmet in accordance with claim 1, wherein the evaporation cooler is arranged in a section of a ventilation opening that is in a rear region of the helmet.

5. The helmet in accordance with claim 1, wherein a plurality of ventilation openings are each provided with an evaporation cooler.

6. The helmet in accordance with claim 1, wherein the evaporation openings are of an elongate character.

7. The helmet in accordance with claim 1, wherein the cooling fluid is drinking water.

8. The helmet in accordance with claim 1, wherein the evaporation openings have a maximum width of 1.5 mm.

9. The helmet in accordance with claim 8, wherein the evaporation openings have a maximum width of 1.3 mm.

10. The helmet in accordance with claim 9, wherein the evaporation openings have a maximum width of 1.2 mm.

11. The helmet in accordance with claim 1, wherein the evaporation openings have a length of a plurality of millimeters.

12. The helmet in accordance with claim 11, wherein the evaporation openings have a length in the range from 2 to 10 mm.

13. The helmet in accordance with claim 12, wherein the evaporation openings have a length in the range from 3 to 6 mm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present disclosure will be described in the following purely by way of example with reference to an embodiment and to the enclosed drawing.

(2) FIG. 1 shows a plan view from above of a helmet in accordance with the present disclosure.

DETAILED DESCRIPTION

(3) The helmet 10 shown in FIG. 1 is a bicycle helmet that has a front region 12 and a rear region 14. The terms “front” and “rear” in this context relate to the perspective of a wearer of the helmet 10, that is the front region 12 of the helmet 10 seated on the head of the helmet wearer faces in the direction of gaze of the helmet wearer, whereas the rear region 14 covers the back of the helmet wearer's head.

(4) The helmet 10 comprises a plurality of ventilation openings 16. Three of these ventilation openings 16 have an elongate design oriented in the longitudinal direction of the helmet 10 and predominantly extent in the rear region 14 of the helmet 10.

(5) An evaporation cooler 18 that is formed by a bend-proof lattice structure 20 in the embodiment shown is inserted into each of these three ventilation openings 16. Each lattice structure 20 has a thickness of approximately 1.5 mm and defines a plurality of evaporation openings 22 that are bounded by webs 24 of the lattice structure 20. The evaporation openings 22 each have a hexagonal cross-section. The length of each evaporation opening 22 here amounts, viewed in the longitudinal direction of the helmet 10, to approximately 4 mm, whereas the maximum width amounts to approximately 1.3 mm.

(6) With this dimensioning of the evaporation openings 22, a water film wetting the lattice structure 20 may also span the evaporation openings 22 due to its surface tension when the lattice structure 20 has water poured or sprayed onto it, from a drinking bottle, for example, during the trip by the helmet wearer, for example an additional cooling is achieved in the rear region 14 of the helmet 10 that considerably increases the comfort in wear of the helmet 10 as a consequence of the drying and evaporating of the water, not least promoted by the headwind.