Electric vacuum cleaner
First Claim
1. An electric vacuum cleaner comprising a body incorporating a motor, a control circuit for controlling the power of the motor, a plurality of indicating lamps for indicating the power of the motor in steps, a hose part which is connected to the body, a grip part which is connected to the hose part and is provided with a grip connecting part, an extension pipe connected to the grip connecting part, and a nozzle part with a nozzle pipe connected to the extension pipe, wherein:
- the indicating lamps are provided on the nozzle part, the vacuum cleaner also comprising a light emitting element for converting a power signal generated into an optical signal, and wherein the extension pipe is provided with an optical signal passage for said optical signal, the nozzle part is provided with a light detecting element for receiving said optical signal and a driving means for driving the indicating lamps as a function of the optical signal received by the light detecting element is provided.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric vacuum cleaner which has a plurality of indicating lamps L1 -L6 for being lighted in steps to indicate the power levels of the motor which has simple construction at connecting parts of the pipes, and which,
comprises a plurality of indicating lamps which are provided on the nozzle part to indicate the power levels of the motor in steps; a power-source providing leads which extends from the body to the nozzle part; a control circuit which controls the power of the motor; a light-emitting element which emits optical signals based on the power signal generated by the control circuit; an optical-signal passage which is provided through the extension pipe in order that the optical-signals travel straight; a light-detecting element which receives the optical signals travelled from the light-emitting element; and driving circuitry for driving a plurality of the indicating lamps based on the signals received at the light-detecting element,
is constructed in such a way that the power levels of the motor are converted into the optical signal at the light-emitting element (30) and then transmitted to the light-detecting element (40) through the light-signal passage (50), therefore electric pins for transmitting the output signals, which were conventionally required at the connecting part of the pipes, are now completely unnecessary.
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Citations
3 Claims
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1. An electric vacuum cleaner comprising a body incorporating a motor, a control circuit for controlling the power of the motor, a plurality of indicating lamps for indicating the power of the motor in steps, a hose part which is connected to the body, a grip part which is connected to the hose part and is provided with a grip connecting part, an extension pipe connected to the grip connecting part, and a nozzle part with a nozzle pipe connected to the extension pipe, wherein:
- the indicating lamps are provided on the nozzle part, the vacuum cleaner also comprising a light emitting element for converting a power signal generated into an optical signal, and wherein the extension pipe is provided with an optical signal passage for said optical signal, the nozzle part is provided with a light detecting element for receiving said optical signal and a driving means for driving the indicating lamps as a function of the optical signal received by the light detecting element is provided.
- View Dependent Claims (2, 3)
Specification