Three-component protective head gear powered by a rechargeable battery
First Claim
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1. A protective helmet providing at least one illuminating LED array, including a circuit driven by at least one battery for powering amplifying means to drive the array, the circuit comprising:
- a comparator, the battery providing an input voltage and a reference voltage for the comparator, the comparator being turned on when the input voltage exceeds the reference voltage, a semiconductor device actuated by the comparator, and functioning as a shunt to maintain a load voltage constant for voltage/current variations as the battery is worn down, and amplifiers connected to the battery, semiconductor device and comparator for turning on the LED array.
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Abstract
A three-component, protective headgear or helmet is provided with a battery-powered LED head lamp, which may be used by construction workers, search and rescue persons, cyclists, police, fireman, and the like. The battery may be replaceable or rechargeable and has long-term, uniform output characteristics driven by unique circuitry.
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Citations
10 Claims
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1. A protective helmet providing at least one illuminating LED array, including a circuit driven by at least one battery for powering amplifying means to drive the array, the circuit comprising:
- a comparator, the battery providing an input voltage and a reference voltage for the comparator, the comparator being turned on when the input voltage exceeds the reference voltage, a semiconductor device actuated by the comparator, and functioning as a shunt to maintain a load voltage constant for voltage/current variations as the battery is worn down, and amplifiers connected to the battery, semiconductor device and comparator for turning on the LED array.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification