Power tool having illumination device
A power tool includes a motor; an output part configured to be rotated around a rotational axis in response to energization of the motor; a plurality of lights disposed spaced apart around the output part; and an optical member having a refractive surface that refracts illumination light emitted from a light-emitting surface of one of the lights such that the main illumination direction extends at an angle away from the rotational axis.
1. A power tool comprising:
a motor;
an output part configured to be rotated about a rotational axis in response to energization the motor;
lights disposed spaced apart around the output part;
a circuit board having a support surface that supports the lights;
an optical member disposed such that the optical member opposes a light-emitting surface of one of the lights; and
a cover member, which has at least a portion that is disposed more forward than the circuit board, is formed of a material that differs from the material of the optical member, and is formed integrally with the optical member.
2. The power tool according to claim 1 , wherein the optical member and the cover member are fixed to the circuit board.
3. The power tool according to claim 1 , wherein:
the optical member includes an optically transmissive part, which transmits illumination light emitted from the light-emitting surface; and
the cover member comprises a light-shielding part.
4. The power tool according to claim 1 , wherein:
the optical member is formed of a polymer; and
the cover member is formed of a polymer in which a coloring material is dispersed.
5. The power tool according to claim 1 , wherein the optical member is insert-molded to the cover member.
6. A power tool comprising:
a motor;
an output part configured to be rotated about a rotational axis in response to energization of the motor;
lights disposed spaced apart around the output part;
a circuit board having a support surface that supports the lights;
an optical member disposed such that the optical member opposes a light-emitting surface of one of the lights;
a cover member, which has at least a portion that is disposed more forward than the support surface of the circuit board, is formed of a material the same as the material of the optical member, and is formed integrally with the optical member; and
a colored layer provided on at least one of a rear surface of the cover member or on a front surface of the cover member.
7. The power tool according to claim 6 , further comprising a bonding layer disposed between the cover member and the colored layer.
8. The power tool according to claim 6 , further comprising a protective layer, which covers the colored layer.
9. The power tool according to claim 6 , further comprising:
a transmission mechanism configured to transmit rotational force of the motor to the output part; and
a case, which houses the transmission mechanism and at least a portion of the output part;
wherein the optical member and the cover member are supported by the case.
10. The power tool according to claim 9 , wherein:
the case includes a first tube part disposed around the transmission mechanism, and a second tube part disposed more forward than the first tube part;
the second tube part has an outer diameter that is smaller than the outer diameter of the first tube part; and
the optical member and the cover member are disposed around the second tube part.
11. The power tool according to claim 10 , wherein:
the second tube part has angled parts, which protrude radially outward; and
the optical member and the cover member have recessed parts, in which the angled parts are disposed.
12. The power tool according to claim 10 , further comprising a fixing member, which is supported by the second tube part and makes contact with at least a portion of the front surface of the cover member.
13. A power tool comprising:
a motor;
an output part configured to be rotated about a rotational axis in response to energization of the motor;
lights disposed spaced apart around the output part; and
an optical member having a refractive surface configured to refract illumination light emitted from a light-emitting surface of one of the lights such that a main illuminating direction of the illumination light is at an angle away from the rotational axis.
14. The power tool according to claim 13 , wherein the optical member includes an incident surface on which the illumination light impinges, an emergent surface from which the illumination light emerges and a circumferential wall part protruding from the emergent surface and surrounding a portion of the emergent surface from which the illumination light that emerges.
15. The power tool according to claim 13 , including:
a hammer case housing at least a portion of the output part; and
a hammer case cover covering at least a portion of the hammer case;
wherein the lights are disposed forward of the hammer case.
16. The power tool according to claim 13 , wherein:
the optical member has an incident surface, on which illumination light emitted from the light impinges, and an emergent surface, from which the illumination light emerges; and
the incident surface includes the refractive surface.
17. The power tool according to claim 16 , wherein the incident surface opposes the light- emitting surface.
18. The power tool according to claim 13 , wherein the refractive surface is tilted such that the refractive surface is closer to said one of the lights at a first location of the refractive surface that is radially outward of a second location of the refractive surface that is radially inward.
19. The power tool according to claim 18 , wherein the refractive surface includes a first refractive surface, which refracts illumination light in a first direction, and a second refractive surface, which refracts illumination light in a second direction.
20. The power tool according to claim 13 , further comprising a circuit board having a support surface that supports the lights.
21. The power tool according to claim 20 , wherein the rotational axis and a line normal to the light-emitting surface are parallel to one another.
22. The power tool according to claim 20 , wherein the optical member is fixed to the circuit board.
23. The power tool according to claim 20 , further comprising a cover member, which has at least a portion that is disposed more forward than the circuit board, is formed of a material that differs from the material of the optical member, and is formed integrally with the optical member.