Collapsible headphone

1. A headphone comprising:

earpieces comprising inner sides facing the head of a user when the headphone is worn;

a headband; and

joint structures connecting the earpieces to the headband, each joint structure comprising a hinge joint and a pivot joint, wherein the hinge joints connect the earpieces to the headband via the pivot joints, and each hinge joint comprises a hinge axis and each pivot joint comprises a pivot axis, the hinge axes being non-parallel to the pivot axes, and wherein the headphone is collapsible to a collapsed configuration where said inner sides are arranged essentially in parallel with the headband and facing each other,

wherein the pivot joints allow the earpieces to rotate around respective pivot axes up to but not exceeding a maximum pivot angle in both rotational directions around a neutral rotational position in which the pivot angle equals 0 degrees.

2. The headphone of claim 1 , wherein the hinge joints allow the pivot joints and earpieces to fold around respective hinge axes towards the headband until the earpieces are positioned adjacent the headband.

3. The headphone of claim 1 , wherein the maximum pivot angle is 180 degrees.

4. The headphone of claim 1 , wherein the maximum pivot angle is 150 degrees.

5. The headphone of claim 1 , wherein the maximum pivot angle is 120 degrees.

6. The headphone of claim 1 , wherein a form of the headband, a form of the earpieces, a movement allowed by the hinge joints, and a movement allowed by the pivot joints are selected such that there is essentially no gap between the headband and the earpieces in the collapsed configuration.

7. The headphone of claim 1 , wherein, the height of the headband essentially corresponds to the height of the earpieces in the collapsed configuration.

8. The headphone of claim 1 , wherein the joint structures are of equal shape.

9. The headphone of claim 1 , wherein a left half of the headband and a left earpiece of the earpieces are of equal shape, respectively, as a right half of the headband and a right earpiece of the earpieces.

10. The headphone of claim 1 , wherein the headphone is configured to remain in the collapsed configuration.

11. The headphone of claim 1 , further comprising telescoping joints allowing a length of the headband to be adjusted.

12. The headphone of claim 1 , further comprising earpiece support structures connecting the joint structures to respective earpieces, each earpiece support structure comprising an earpiece joint.

13. The headphone of claim 12 , wherein the earpiece support structures are yoke shaped and each earpiece support structure comprises two earpiece pivot joints.

14. The headphone of claim 12 , further comprising a control device integrated in one of the earpiece joints.

15. The headphone of claim 14 , wherein the control device comprises a function button.

16. A headphone comprising:

earpieces comprising inner sides facing the head of a user when the headphone is worn;

a headband; and

joint structures connecting the earpieces to the headband, each joint structure comprising a hinge joint and a pivot joint, wherein the hinge joints connect the earpieces to the headband via the pivot joints, and each hinge joint comprises a hinge axis and each pivot joint comprises a pivot axis, the hinge axes being non-parallel to the pivot axes, and wherein the headphone is collapsible to a collapsed configuration where said inner sides are arranged essentially in parallel with the headband and facing each other,

wherein the respective joint structure is configured to prevent rotation of the earpiece around a transverse axis to the headband in the area of the joint structure, and

wherein the joint structures are configured such that the pivot axis is arranged at an angle of at least 30 degrees with respect to the transverse axis.