<19)United States
`<12)Patent Application
`Burgess
`
`Publication
`
`<10)Pub.N0.:US 2005/0030761A1
`(43)Pub. Date:
`Feb. 10, 2005
`
`US 20050030761A1
`
`(54) PACKAGE LED’S AND ELECTRONICS AS A
`REPLACEABLE LIGHT BULB
`
`Related U.S. Application Data
`
`(76)
`
`Inventor: Edward Sean Burgess, Grosse lle, Ml
`(U5)
`
`Correspondence Address:
`EDWARDs, Bunclzss
`21119KNUDSEN
`
`GROSSE ILE. Ml 48138 (US)
`(31) App], N0;
`10/654,459
`
`(22)
`
`Filed:
`
`Sep. 4, 2003
`
`(60)
`
`Provisional application No. 60‘/444,358, filed on Feb.
`3, 2003.
`
`Publication Classification
`
`Int. Cl.’
`(51)
`(52) U.S.Cl.
`
`F2lV 7/04
`36?J555
`
`ABSTRACT
`(57)
`Package enough LED‘s and electronics into a package that
`will fit in the same package space as an existing replaceable
`light hulh.
`
`r
`____._
`
`Position of 3l57NA
`Glass Envelope
`
`/
`
`.v..~.~‘V
`
`;
`
`I-/
`
`ere“?
`
`\.
`
`_
`
`\
`
`;'
`
`‘
`
`,.
`
`"*1.:0 1
`
`-
`
`I 1’
`
`>
`
`\
`
`_
`
`I '1"
`i 6-77I
`
`3 75
`
`>
`
`side View
`Bulb Base same as
`Society of Automotive
`Engineers (SAE) S-8 Wedge
`
`\
`- '‘
`
`‘
`
`t
`
`:.~r
`
`p-8.l—=\|
`
`Harw­
`Ourfluf
`
`"."""‘
`
`Lem in same
`6 '
`3l57NA bulb
`Tn,"
`locationasfilamentin
`
`Ea
`
`_
`
`I
`§
`
`|
`
`'
`
`Electronics
`run LED‘s
`
`t
`
`II _.=_ ____
`
`'
`
`21.1»,
`
`’
`
`\
`
`¢|—aa\-I11
`l
`
`‘¢\-7‘
`
`F1011!View
`
`I1.$0
`21.1
`
`\..
`
`~-at
`
`'
`
`C
`
`\
`
`3. 0
`
`FE
`"
`
`Bow!!!V
`
`' M"Jul Ourrtrt
`
`

`

`Patent Application Publication Feb. 10, 2005
`
`US 2005/0030761 A1
`
`,7».
`
`Position of 3lS7NA
`Glass Envelope
`
`/
`
`/-"
`
`,
`
`— --
`
`I E
`
`‘
`
`l
`
`4
`
`nv;r=_\_1_
`
`:?""“"
`a, i
`~I
`
`E-E3
`
`LED_‘sin same
`location as filament in
`3l57NA bulb
`
`Z
`
`Len;
`
`"*1.:ok
`
`\-.
`
`\
`
`\
`
`\
`
`.
`
`‘
`
`————|
`
`I
`
`5
`Elcctronics
`run LED's
`
`- \\
`
`l
`
`I
`
`\‘
`
`1 K _v ‘ _
`
`-82
`
`A
`
`Q.7_'7-wv
`
`{@153ii “+7
`
`i
`3 75
`
`I-2.
`
`$.79’
`
`I
`
`*1 1*
`
`S“: View
`
`.
`
`Society of Automotive
`
`l
`
`"
`
`_
`
`Fmn|.View
`
`i
`
`Engineers(SAE)S-8Wedge
`
`[oi
`
`-9!
`11.59
`11.1
`
`p-8.l—\|
`
`Harw­
`OVTPW1’
`
`\‘.‘~ .
`'
`
`1.0
`
`C —T
`
`BottomView '
`
`]~4,,,“
`
`gm-mg
`
`

`

`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`US 2005/0030761 A1
`
`Feb. 10, 2005
`
`PACKAGE I.l<Il)’SANI) l<Il.l<IC'l‘R()NlCSAS A
`REPLACEABLE LIGHT BULB
`
`CROSS-REFERENC E TO RELATED
`APPI ICATIONS
`
`[0001] Provisional Patent No. 6044358
`
`BACKGROUND OF THE INVENTION
`
`[0002] Light Emitting Diodes (LED’s) are a product of the
`modern electronic age. If treated properly in regards to the
`electrical inputs, LED’s can produce light for a very long
`time (+10,000 hrs). Its efificiencyon the transfer of electricity
`to usable light endeared the LED to the battery powered
`electronic. Until recently the light output per LED was very
`limited. LED’s are currently best suited for single color
`applications but with the latest
`inventions by the LED
`manufactures, \vhite output LED’s are becoming commer­
`cially viable. One drawback to LED’s is that they have to be
`driven electronically to get the light out. With ever increas­
`ing improvements
`in electronics,
`the circuits
`that are
`required to run the LED’s are constantly being made smaller.
`The light bulb has been around for 100 years. There are
`countless varieties of light bulbs that fit into a gamete of
`fixtures. This idea is to use LED"s with electronics as a
`replacement that fits into a fixture as a replaceable bulb.
`
`[0003] LED’s use a totally different method to make light
`than the traditional filament incandescent bulb. An incan­
`descent bulb is basically a black box emitter and gets about
`200 hours of useful life. An LED works by setting up two
`energy states for an electron to jump. When the electron
`makes the jump a photon is released. The size of the jump
`and number of electrons making the jump sets the photon
`Wavelength (color) and intensity. There are many things that
`contribute/shorten the life of a filament bulb such as duty
`cycle, temperature it operates in, vibration, and electrical
`loads on the circuit. LED’s have similar but different envi­
`ronmental concerns on their life. Some things that make the
`filament break have no effect on the LED and things the
`filament bulb can take like high heat are detrimental to the
`LED. Since the LED is completely different than the fila­
`ment, a different set of requirements/environments apply.
`There are many areas where the LED features for durability
`equal or surpass the usefulness of a bulb. Treated right the
`LED can last 10,000 hours.
`
`[0004] Typical incandescent filament light bulbs have an
`efliciency of 30 lumens per watt. Fluorescent, sodium and
`mercury vapor lamps are in the range of 50 lumens per Watt.
`LED"s typically produce 80 lumens per Watt. This also
`equates into a cooler operation for the same lumen output.
`Some of the first uses of I.ED’s (l970’s) were in battery
`powered electronic devices, \vatches, calculators, toys, etc .
`. . where the LED is actually seen. The LED provided light
`output With very little energy input. One of their biggest
`draw back was the quantity of light that they could produce
`per LED device, 0.1 lumens per LED of monochromatic
`light. This was miniscule compared to a small bulb. A small
`bulb like the ones used as night-light puts out 3 candela (18
`Lumens of white light). This shortage of light left LED
`usage primarily for direct lighting application, where you
`actually see the LED. Ten years ago to actually illuminate
`anything with LED’s required very large arrays of LED"s. In
`the automotive industry they would use 20 or more LED’s
`
`for the Center High Mounted Stop Lamp, which can be done
`withjust one bulb. In the automotive market the quantity of
`light per available LED device has been going up 30% per
`year for red and amber LED’s. Also white LED’s are being
`promoted in the trade magazines as being available. In the
`last
`few years the output of LED"s has significantly
`advanced where 5 lumen devices are commercially avail­
`able. Now, a smaller array of LED’s can product the same
`luminance output as a bulb. Iligher transmission of electric­
`ity to light, less energy is required.
`
`[0005] A second lighting benefit of LED’s is the direc­
`tional nature of the light. One inefficiency of incandescent
`bulb is it throws light
`in every direction. LED can be
`designed to shine light in the most beneficial direction for
`the application. Less overall light is required but an equal
`amount of usable light. An example of this would be a light
`bulb in a socket with a rellector. An incandescent bulb
`basically shines light in all directions, the reflectors is used
`to direct most of the light in one direction. With LED’s all
`of the light can be emitted in the direction that needs it,
`eliminating light losses due to reflectance and surface scat­
`ter. Less light is wasted, less light needs to be generated, and
`less energy is required.
`
`[0006] LED"s were originally and still are well suited for
`small battery (AA, C, etc . . . ) applications. LED’s need a
`small direct current voltage applied across it (l.5V dc
`typical) in order to emit light. The output of the device is set
`in the manufacturing of the LED device. The light produced
`from any LED device is specific to that devices forward
`voltage (Vf) and drive current. It does have light output
`variation between its accepted minimum and maximum
`forward voltage. Going below the minimum produces no
`light. Going over the maximum will cause the LED to fail.
`
`[0007] For any replaceable bulb/light source there is an
`acceptable range of electrical input. For instance, most US
`household light fixtures that work off of 110 Volts AC, cars
`work at 12.8 VDC. Knowing the application an electronic
`circuit can be made to turn the input, I10 VAC, into the
`desired LED Vf.
`
`Improvements in output per LED, and the growth
`[0008]
`(shrinking) of electronics, a very small, very bright, very
`energy efficient package can be made.
`
`BRIEF SUMMARY OF THE INVENTION
`
`[0009] Package enough LED’s and electronics into a pack­
`age that will fit in the same package space as an existing
`replaceable light bulb.
`
`BRIEF DESCRIPTION OT TIIE DRAWINGS
`
`[0010] The attached drawing shows but one possible use
`for this invention. The drawing shows the glass portion of
`the SAE 3157 S8 bulb being replaced with an electronic
`board with LED’s. The LED’s are placed in close proximity
`of where the filament had been.
`
`DETAILED DESCRIPTION OE THE
`INVENTION
`
`[0011] Light bulbs come in many different shapes and
`sizes. The light they give off is generated by the heat of a
`filament, the arc of electricity in sodium vapor lamps, or the
`byproduct of an electrical flow through a fiorescent tube.
`
`

`

`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`US 2005/0030761 Al
`
`Feb. 10, 2005
`
`the bulb can be
`They do have in common the fact that
`screwed or snapped in place. If the bulb fails there is no need
`to rewire the fixture, just twist the old one out and screw in
`a new one. This idea is to use Light Einitting Diodes as the
`source of the light, include enough electronics to rt|n the
`LED"s, and mount all of this so they can be used in a fixture
`like an existing light bulb.
`
`[0012] The following drawing is just one of many possible
`examples of packaging enough LED’s into a similar package
`as on an existing light bulb. This particular example is an
`LED replacement for a Society ofAutomotive Engineers S-8
`Wedge base 3157NA. The 3157NA is an amber light bulb
`with two filaments. In a typical automotive exterior lighting
`applications the 3l57 NA bulb filaments are positioned
`Within a lamp that will provide a lit function for the vehicle
`such as parking lamp,
`turn indicator, side marker, or a
`combination of any or all of these functions. The require­
`ments are usually met with both direct light and light that is
`reflected off of a reflective surface. In a typical 3157 NA
`application the minor filament
`is used for a park lamp
`function and major filament as the turn function. There is
`enough change in light output between the minor and major
`filament that the oncoming drives know what the driver is
`doing.
`
`In the following drawing the LED’s are positioned
`[0013]
`in close proximity of where both the low and high filaments
`of a 3157NA bulb would be located. In the 3157NA appli­
`cation there are four wires that come into the bulb; two are
`ground; one is for high filament
`function; one for low
`filament function. Iligh and low filament input is both +12
`VDC. In this particular case, the LED devices input at the
`base would be exactly the same as a 3157NA so this device
`would fit into existing sockets. The electric circuit on the
`device would run the LED’s based on the input. The low
`filament
`input would run the I.ED’s at a lower Vf and
`
`input is turn, the Vf and
`current. When the high filament
`drive current to the LED would be increased to provide a
`significant change to the illumination.
`
`In the above example the concept is to use the LED
`[0014]
`bulb as replacement for an existing bulb. It may or may not
`be an exact replacement in the Way of light color, intensity,
`or electrical profile. The idea is to make an LED bulb fit the
`existing hardware. This is not to say that if this idea takes oil‘
`that someone will not want to make a specific combination
`of bulb and fixture that is currently not in existence. The
`design of the fixture would be theirs, the design of the bulb
`would be related back to this idea.
`
`[0015] Most I.ED’s operate at one dominant wavelength.
`The first usage of this patent would be places Where color
`light is required such as stoplights, automotive and truck
`lighting. With the advent of white I.ED’s it may be possible
`someday to make an LED replacement [or the standard IOO,
`75, and 65 watt bulbs currently in used in most homes in the
`USA. Or make an IED tube to replace the florescent tube
`used in most olfiws. The energy savings could be 60% [or
`each filament bulb switched over.
`
`I) Use Light Emitting Diodes (LED’s) with applicable
`electronics to drive the LED’s in replaceable light bulb
`applications.
`2) Package LED(s) and electronics so they can be used in
`existing light fixtures
`3) Package LED(s) and electronics so they can be used to
`develop new lighting fixtures
`4) Package LED(s) and electronics so that
`replace existing replaceable light sources.
`5) Package LED(s) and electronics so that they can be
`used as a replaceable light sources.
`
`they can
`
`