Phosphor wheel device, light source device, and projection image display device
A phosphor wheel device includes a motor having a rotation shaft, a phosphor wheel substrate attached to one end side of the rotation shaft, and a balancer fixed to the phosphor wheel substrate. The balancer has at least one opening that is open to an outside of the phosphor wheel device.
1. A phosphor wheel device comprising:
a motor having a rotation shaft;
a phosphor wheel substrate attached to a first end side of the rotation shaft;
a first balancer fixed to the phosphor wheel substrate; and
a second balancer attached to a second end side of the rotation shaft,
wherein:
each of the first balancer and the second balancer has at least one opening that is open to an outside of the phosphor wheel device;
the phosphor wheel substrate is between the first balancer and the motor; and
the motor is between the phosphor wheel substrate and the second balancer.
2. The phosphor wheel device according to claim 1 , wherein the at least one opening of the first balancer includes two openings.
3. The phosphor wheel device according to claim 2 , wherein the two openings are located on a circumference around the rotation shaft and are disposed at intervals of 180 degrees.
4. The phosphor wheel device according to claim 1 , wherein the at least one opening of the first balancer includes three openings.
5. The phosphor wheel device according to claim 4 , wherein the three openings are located on a circumference around the rotation shaft and are disposed at intervals of 120 degrees.
6. The phosphor wheel device according to claim 1 , wherein the at least one opening of the second balancer includes two openings.
7. The phosphor wheel device according to claim 6 , wherein the two openings are located on a circumference around the rotation shaft and are disposed at intervals of 180 degrees.
8. The phosphor wheel device according to claim 1 , wherein the at least one opening of the second balancer includes three openings.
9. The phosphor wheel device according to claim 8 , wherein the three openings are located on a circumference around the rotation shaft and are disposed at intervals of 120 degrees.
10. The phosphor wheel device according to claim 1 , wherein the at least one opening of the first balancer is a through hole penetrating the first balancer.
11. The phosphor wheel device according to claim 1 , wherein the at least one opening of the first balancer is a hole that does not penetrate the first balancer.
12. The phosphor wheel device according to claim 11 , wherein the at least one opening of the second balancer is a hole that does not penetrate the second balancer.
13. The phosphor wheel device according to claim 1 , wherein the first balancer and the second balancer are made of brass.
14. The phosphor wheel device according to claim 1 , wherein the phosphor wheel substrate has a phosphor layer on a circumference around the rotation shaft.
15. The phosphor wheel device according to claim 14 , wherein:
the phosphor layer has a ring shape; and
the first balancer is disposed inside the ring shape of the phosphor layer.
16. The phosphor wheel device according to claim 15 , wherein the first balancer has a cylindrical shape.
17. The phosphor wheel device according to claim 16 , wherein the second balancer has a cylindrical shape.
18. The phosphor wheel device according to claim 17 , wherein an outer diameter of the first balancer is equal to an outer diameter of the second balancer.
19. A light source device comprising:
the phosphor wheel device according to claim 14 ; and
a light source configured to emit light that excites the phosphor layer.
20. A projection image display device comprising the light source device according to claim 19 .