Imaging device, shield, and method of manufacturing imaging device
An imaging device according to the present disclosure includes a lens unit, a substrate, a housing, and a shield. The lens unit includes a lens barrel in which a lens is disposed. The substrate is disposed on an emission side of light from the lens barrel. The substrate includes a first surface on which an imaging element receiving the light is mounted. The housing houses the lens unit and the substrate. The shield is provided in the housing to face the first surface of the substrate.
1. An imaging device comprising:
a lens unit including a lens barrel in which a lens is disposed;
a substrate disposed on an emission side of light from the lens barrel, the substrate including a first surface on which an imaging element receiving the light is mounted;
a housing that houses the lens unit and the substrate;
a shield provided in the housing to face the first surface of the substrate; and
a heat dissipation member provided between the shield and the substrate;
wherein
the shield is provided to obliquely extend from a side edge of the substrate toward a position facing the first surface,
the shield has a length in a first direction orthogonal to the substrate, the length being longer than an inner dimension of the housing covering a side part of the substrate in the first direction,
the shield is inclined toward an inside of the housing along the lens unit when the lens unit and the substrate are inserted into the housing,
the shield includes multiple holes at positions of the substrate in the first direction,
the multiple holes include holes provided at a center and an end of the shield in a second direction orthogonal to the first direction,
the multiple holes further include a hole provided at a second end of the shield opposite to a first end of the shield, the first end contacting with the lens unit among ends of the shield in the first direction, and
the heat dissipation member is pushed out between the shield and the housing by the substrate via the multiple holes when the lens unit and the substrate are inserted into the housing.
2. The imaging device according to claim 1 , wherein
the shield includes a first shield pair and a second shield pair, the first shield pair being constituted by plate-shaped members disposed to face each other, the second shield pair being constituted by plate-shaped members partly overlapping with end parts of the first shield pair and disposed to face each other, and
the first shield pair is inclined toward the inside of the housing with a time difference from the second shield pair when the lens unit and the substrate are inserted into the housing.
3. The imaging device according to claim 1 , wherein the lens unit includes a contact part contacting with the shield, the contact part being formed of a resin material.
4. The imaging device according to claim 2 , wherein the lens unit includes a contact part contacting with the shield, the contact part being formed of a resin material.
5. The imaging device according to claim 1 , wherein the shield includes a hemmed edge contacting with the lens unit.
6. The imaging device according to claim 2 , wherein the shield includes a hemmed edge contacting with the lens unit.
7. The imaging device according to claim 1 , wherein the lens unit further includes a stopper that, after the first surface is covered with the shield, suppresses inclination of the shield to the inside of the housing and pushes out a position of the substrate of the shield in the first direction to an outside of the housing.
8. An imaging device comprising:
a lens unit including a lens barrel in which a lens is disposed;
a substrate disposed on an emission side of light from the lens barrel, the substrate including a first surface on which an imaging element receiving the light is mounted;
a housing that houses the lens unit and the substrate; and
a shield provided in the housing to face the first surface of the substrate;
wherein
the shield is provided to obliquely extend from a side edge of the substrate toward a position facing the first surface,
the shield has a length in a first direction orthogonal to the substrate, the length being longer than an inner dimension of the housing covering a side part of the substrate in the first direction,
the shield is inclined toward an inside of the housing along the lens unit when the lens unit and the substrate are inserted into the housing,
the housing is a rectangular box-shaped housing including an opening on a side of the first surface,
the lens unit includes a cover that is housed in the housing to close the opening, and
the imaging device further comprises:
a welding member provided outside the housing, the welding member abutting on the housing and the cover, the welding member being welded to the housing and the cover by laser radiation; and
catch members provided at corners inside the housing, the catch members supporting the cover to fix a position of the lens unit in an insertion direction of the lens unit into the housing from the opening.
9. A method of manufacturing an imaging device, the imaging device including: a lens unit including a lens barrel in which a lens is disposed; a substrate disposed on an emission side of light from the lens barrel, the substrate including a first surface on which an imaging element receiving the light is mounted; a housing that houses the lens unit and the substrate; a shield provided in the housing to face a side part and the first surface of the substrate, the shield having a length in a first direction orthogonal to the substrate, the length being longer than an inner dimension of the housing covering the side part of the substrate in the first direction; and a heat dissipation member provided between the shield and the substrate, the shield including multiple holes at positions of the substrate in the first direction, the multiple holes including holes provided at a center and an end of the shield in a second direction orthogonal to the first direction, the multiple holes further including a hole provided at a second end of the shield opposite to a first end of the shield, the first end contacting with the lens unit, the method comprising:
when the lens unit and the substrate are inserted into the housing,
inclining the shield toward an inside of the housing along the lens unit; and
pushing out the heat dissipation member between the shield and the housing by the substrate via the multiple holes.
10. The method according to claim 9 , further comprising, after the first surface is covered with the shield,
suppressing inclination of the shield to the inside of the housing and pushing out a position of the substrate of the shield in the first direction to an outside of the housing by a stopper included in the lens unit.
11. The method according to claim 9 , wherein
the housing is a rectangular box-shaped housing including an opening on a side of the first surface, and
the lens unit includes a cover that is housed in the housing to close the opening, and
the method further comprises:
supporting the cover, by catch members provided at corners inside the housing, to fix a position of the lens unit in an insertion direction of the lens unit into the housing from the opening; and
bringing a welding member provided outside the housing into contact with the housing and the cover, and welding the welding member to the housing and the cover by laser radiation.
12. The method according to claim 10 , wherein
the housing is a rectangular box-shaped housing including an opening on a side of the first surface, and
the lens unit includes a cover that is housed in the housing to close the opening, and
the method further comprises:
supporting the cover, by catch members provided at corners inside the housing, to fix a position of the lens unit in an insertion direction of the lens unit into the housing from the opening; and
bringing a welding member provided outside the housing into contact with the housing and the cover, and welding the welding member to the housing and the cover by laser radiation.