Diode lamp for simulating a filament lamp, and lamp monitoring method
First Claim
1. A light-emitting, diode lamp, the diode lamp for replacing a filament lamp, the diode lamp comprising:
- a light-emitting diode;
a load resistor, the load resistor being in series with the light-emitting diode for forming a two-component, first current path;
a current-limiting diode; and
a low resistance resistor, the low resistance resistor being in series with the current-limiting diode for forming a two-component, second current path, a potential difference being applicable across the first and second current paths for driving current through said paths, enabling light emission from the light-emitting diode, and simulating a relatively low resistance through the diode lamp.
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Abstract
An LED-based lamp assembly or diode lamp assembly effectively replaces a filament or incandescent type lamp assembly for cabin/compartment reading light applications for reducing power consumption and improving fuel efficiency. The diode lamp assembly comprises a light-emitting diode in circuit with peripheral components for effecting or simulating a low resistance through the diode lamp assembly. The simulation of a low resistance via the diode lamp assembly appears the same as the normal operation of a filament lamp assembly to existent circuit polling mechanisms so that the latter need not be replaced. Rather, the targeted element to be replaced is a relatively high power consumption filament lamp. A lamp monitoring method is further disclosed as bootstrap-supported by the teaching of the diode lamp assembly.
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Citations
21 Claims
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1. A light-emitting, diode lamp, the diode lamp for replacing a filament lamp, the diode lamp comprising:
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a light-emitting diode; a load resistor, the load resistor being in series with the light-emitting diode for forming a two-component, first current path; a current-limiting diode; and a low resistance resistor, the low resistance resistor being in series with the current-limiting diode for forming a two-component, second current path, a potential difference being applicable across the first and second current paths for driving current through said paths, enabling light emission from the light-emitting diode, and simulating a relatively low resistance through the diode lamp. - View Dependent Claims (2, 3, 4)
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5. A diode lamp, the diode lamp for replacing a filament lamp, the diode lamp comprising:
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a light-emitting diode; a load resistor, the load resistor being in series with the light-emitting diode for forming a two-component, first current path; a Zener-diode; a capacitor, the capacitor being in parallel with the Zener diode for forming a voltage-decaying path segment; and a low resistance resistor, the low resistance resistor being in series with the voltage-decaying path segment for forming a three-component, second current path, a potential difference being applicable across the first and second current paths for driving current through said paths, enabling light emission from the light-emitting diode, and simulating a relatively low resistance through the diode lamp. - View Dependent Claims (6, 7, 8, 9)
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10. A diode lamp assembly, the diode lamp assembly for simulating a filament lamp assembly, the diode lamp assembly comprising:
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a light-emitting diode; and low-resistance-simulating means for simulating relatively low resistance across the light-emitting diode, a potential difference being applicable across the light-emitting diode and low-resistance simulating means for driving current therethrough and enabling light emission from the light-emitting diode. - View Dependent Claims (11, 12, 13)
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14. A lamp monitoring method, the lamp monitoring method for testing a lamp socket, the method comprising the steps of:
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installing a diode lamp into a lamp socket; applying a potential difference across the diode lamp via the lamp socket; simulating a low resistance through the diode lamp; and polling the lamp socket for a high resistance signal from the diode lamp. - View Dependent Claims (15, 16, 17)
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18. A circuit-monitoring method, the circuit monitoring method for testing light-emitting diode circuitry, the method comprising the steps of:
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installing a light-emitting diode into a diode-lighting circuit; sending current through the diode-lighting circuit for emitting light from the light-emitting diode; simulating a low resistance through the light-emitting diode; and polling the diode-lighting circuit for a high resistance signal. - View Dependent Claims (19, 20, 21)
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Specification