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US 7,396,994 B2Granted
Electronic keyboard instrument
AssigneeYamaha Corporation
InventorRyuichi Izumi
Life of this patent
Estimating the term…
Abstract
An electronic keyboard instrument includes a keyboard attachment frame section having a keyboard section; a rear frame section joined to a rear portion of the lower surface of the keyboard attachment frame section and having pedals provided at its bottom portion; and an electronic circuit that generates heat when activated and includes a power transformer and an amplifier. The electronic circuit is vertically provided on the inner surface of a rear body section of the rear frame section. Hole portions and ventilation holes are provided at a bottom portion of the rear body section. Ventilation holes are provided at the keyboard attachment frame section.
Claims18
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein the electronic circuit is formed on a predetermined plane, and is disposed vertically in such a manner that the plane extends along an inner wall surface of the rear frame section.
3 more elements
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein the ventilation hole provided at a lower portion of the rear frame section is located below the electronic circuit.
3 more elements
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein the foot controller is a pedal projecting from a projection opening provided at a bottom portion of the rear frame section;
- and the projection opening serves as the ventilation hole provided at a lower portion of the rear frame section.
4 more elements
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the keyboard attachment frame section.
3 more elements
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein a power line inlet is provided at a rear surface of the frame body;
- and the ventilation hole provided at a portion of the frame body located above the electronic circuit is located in a peripheral region of the power line inlet.
4 more elements
An electronic keyboard instrument comprising:
- a frame body comprising a keyboard attachment frame section and a rear frame section and having a space section formed therein, the keyboard attachment frame section having a keyboard, and the rear frame section being connected to a rear portion of a lower surface of the keyboard attachment frame section and having a foot controller provided at a bottom portion thereof or provided therebelow via a connection section;
- and an electronic circuit generating heat when activated;
- wherein the electronic circuit is provided in the interior of the rear frame section;
- and a ventilation hole communicating with the exterior of the frame body is provided at a lower portion of the rear frame section and provided at a portion of the frame body located above the electronic circuit,
- wherein the ventilation hole provided at a portion of the frame body located above the electronic circuit is located at the rear frame section, and
- wherein the electronic circuit is composed of a power transformer, a circuit board, and an amplifier.
3 more elements
Dependencies are inferred from the claim text.