Sheet switch module
AssigneeCitizen Electronics Co., Ltd.
InventorsKenshi AIHARA, Isao Miyashita
Life of this patent
Estimating the term…
Abstract
A sheet switch module includes a circuit board (20) provided with a fixed contact (22) thereon, a light source (30), a movable contact (26) to face the fixed contact (22), a sheet (28) to hold the movable contact (26) on the circuit board, a key top (46) disposed to face the movable contact and a light guiding plate (32) to guide light emitted from the light source (30) to the key top. The light-guiding plate (32) includes a light-receiving part (34) projecting toward an upper surface of the circuit board (20) and a light-guiding part (39). The light-guiding plate (32) is positioned in a substantially horizontal state supported by the light-receiving part (34) on the upper surface of the circuit board (20).
Claims15
A sheet switch module, comprising:
- a circuit board;
- at least one switch mounted on an upper surface of the circuit board;
- at least one light source mounted on the upper surface of the circuit board;
- and
- a light-guiding plate including at least one light-receiving part and a light-guiding part which is disposed above the switch,
- the at least one light-receiving part each extended from a lower surface of the light-guiding part toward the upper surface of the circuit board, and the at least one light-receiving part supporting the light-guiding plate on the upper surface of the circuit board.
Dependencies are inferred from the claim text.