St2lt€S
`(19)United
`(12)Patent Application P bl’
`ti
`ll
`ICE! 011 (10)Pub. No.: US 2007/0230172 Al
`Wang
`(43)Pub. Date:
`Oct. 4, 2007
`
`US 20070230l72Al
`
`(54) LAMP VVITHMULTIPLE LIGHT FIWITTIYG
`FAC ES
`
`(52) U.S. Cl.
`
`........................... 362/249; 362/294; 362/373
`
`(75)
`
`lnventor:
`
`Pei-Clma VVang,Gueishan Township
`(TW)
`
`(57)
`
`ABSTRACT
`
`Correspondence Address:
`IIDSL
`4331 STEVENS BATTLE LANE
`FAIRFAX, VA 22033 (US)
`
`(73) Assignee: Augux C0., Ltd.
`
`(21) Appl. No.:
`
`11/393,816
`
`(22) Tiled:
`
`Mar. 31, 2006
`
`Publication Classification
`
`(51)
`
`Int.Cl.
`F21V 21/00
`F21V 29/00
`
`(2006.01)
`(2006.01)
`
`A lamp With multiple light emitting faces includes a heat­
`dissipation unit, an isothermal body, a plurality of light­
`cmitting units, a lampshade and a reflection shell. The
`heat-dissipation unit includes two round hollow casings. The
`isothermal body is arranged on a bottom face of t_heheal­
`dissipation unit and integral With the heat-dissipation unit,
`The isothermal body includes a plurality of outer planes and
`each plane is defined Witha groove. The light-emitting units
`are arranged in the groove to provide lamp i11multiple
`planes. The lampshade includes a plurality of heat dissipat­
`ing plates and an accommodation space is defined at center
`of the la111pshadeto accommodate the heal-dissipation unit,
`The reflection shell is assembled with the heat-dissipation
`umt and the lampshade and the reflection shell is around the
`isothermal body.
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`Patent Application Publication Oct. 4, 2007 Sheet 1 of 6
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`Patent Application Publication Oct. 4, 2007 Sheet 4 0f 6
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`Patent Application Publication Oct. 4, 2007 Sheet 5 of 6
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`Patent Application Publication Oct. 4, 2007 Sheet 6 of 6
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`US 2007/0230 I72 A l
`
`Oct. 4, 2007
`
`LAMP WITH MULTIPLE LIGHT EMITTING
`FACES
`
`BACKGROUND OE TIIE INVENTION
`
`[0001]
`
`1. Field of the Invention
`
`[0002] Tl1epresent invention relates to a lamp, especially
`to a la111pwith multiple light emitti11g faces.
`[0003]
`2. Description of Prior Art
`
`[0004] Light emitting diode (LED) is a solid-state serni­
`conductor device, where two different carriers are combined
`as current flows through the diode and light is emitted from
`the diode as energy transfers from the combination. LED has
`the advantage of compactness, fast response and contami­
`nation-free. Therefore, LED has versatile applications. More
`particularly, as high-power LED is successfully developed.
`LED can be used in ge11eral-lightingapplication to replaced
`tungsten lamp.
`
`[0005] As the fabrication technology of LED is enhanced
`and new material is developed, the high power LED can be
`manufactured with high brightness and can be applied to
`various applications.
`[0006] Even though the power of LED is enhanced, it is
`still diflicult to provide suflicient illumination by only one
`LED. FIG. 1 shows a prior art LED lamp with a plurality of
`LEDs. The LED lamp comprises a refection shell 101 with
`a round supporter 102, a plurality of LEDs 103 arranged on
`the round carrier 102. The light emitted from the I.EDs 103
`is focused by reflection the refection shell 101.
`
`the
`[0007] However, the supporter 102 used to mount
`LEDs 103 uses only si11gleface to 111ountthe LEDs 103. The
`supporter 102 has limited surface area and the brightness of
`the LE1.) la111pis hard to enhance. The LE1.) la111pwill be
`bulky and the cost
`is increased when the area of the
`supporter 102 is increased.
`
`SUMMARY OF TI—IEINVENTION
`
`[0008] The present invention is to provide a lamp with
`multiple light emitting faces. An isothermal body with a
`plurality of planes is provided to mount light emitting units.
`A reflection shell is provided for light focusing. The lifeti111e
`of the lamp is prolonged by the heat dissipation of the
`isothermal body.
`[0009] Accordingly, the present invention provides a lamp
`with multiple light emitting faces. Tl1e lamp comprises a
`heat-dissipation unit, an isothermal body, a plurality of
`light-emitting units, a lampshade and a reflection shell. The
`heat-dissipation unit includes two round hollow casings. The
`isothermal body is arranged on a bottom face of the heat­
`dissipation unit and integral with t_heheat-dissipation unit.
`The isothermal body includes a plurality of outer planes and
`each plane is defined with a groove. The light-emitting units
`are arranged in tl1e groove to provide lamp in multiple
`planes. The lampshade includes a plurality of heat dissipat­
`ing plates a11da11accommodation space is defined at center
`of t_helampshade to accommodate t_hel1eat-dissipation unit.
`The reflection shell is assembled with the heat-dissipation
`u11ita11dthe lampshade a11dthe reflection shell is around the
`isothermal body. The ligl1t emitted from the light-emitting
`units is focused by the reflection shell to provide high
`brightness.
`
`BRIEF DESCRIPTION OF DRAWING
`
`[0010] The features of the invention believed to be novel
`are set forth with particularity in the appended claims. The
`invention itself however may be best understood by refer­
`ence to the following detailed description of the invention,
`which describes certain exemplary embodiments of the
`invention,
`taken in conjunction with the accompanying
`drawings in which:
`
`[0011] FIG. 1 shows a section view ofprior art LED lamp.
`[0012] FIG. 2 shows an exploded view of the present
`invention.
`
`[0013] FIG. 3 shows the operation of the lamp according
`to the present invention.
`
`[0014] FIG. 4 shows a partially enlarged figure of the
`isothermal body.
`
`[0015] FIG. 5 shows the isothermal body according to
`another preferred embodiment of the present invention.
`
`1-‘IG.6 shows a schematic view of heat dissipation
`[0016]
`i11the lamp according to t_hepresent
`invention.
`
`DETAILED DESCRIPTION OE TIIE
`INVENTION
`
`[0017] FIG. 2 shows an exploded view of the present
`invention. The LED lamp according to the present invention
`comprises a heat-dissipation unit 1, at
`least one light­
`emitting unit 3, a lampshade 5 and a reflection shell 7. The
`l1eat-dissipation unit 1 comprises a first casing 12, a second
`casing 14 and an isothermal body 16. The first casing 12 is
`a round hollow casing a11dcomprises a lower face 121,
`which is smaller than an upper face 122 of t_hefrst casing 12.
`Convex holes 123a and 12312are defined on the lower face
`121 and through the lower face 121. The second casi11g14
`is also a round hollow casing and matched with the first
`casing 12. Concave holes 142a and 142b are defined on a
`bottom face 141 of the second casing 14. When the first
`casing 12 is assembled with the second casing 14, namely,
`the first casing 12 is placed within the second casing 14, the
`convex holes 123a and 12312are fit with the concave holes
`142a and 14211.An annulus space 18 is defined between the
`first casing 12 and t_hesecond casing 14, as shown in FIG.
`3.
`
`[0018] Moreover, the isothermal body 16 is arranged on
`the bottom face 141 of the second casing 14 and integral
`with the second casing 14. The isothermal body 16 is a11
`elongated hollow cylinder and used to conduct heat to the
`heat-dissipation unit 1. The isothermal body 16 is commu­
`nicated with the annulus space 18. The isothermal body 16
`and the annulus space 18 are in vacuum state and filled with
`wick structure and working fluid. However,
`this is well
`known art and the detailed description is omitted here. The
`isothermal body 16 is a polygon cylinder such as the octagon
`cylinder shown in FIG. 5.
`l_n the preferred embodiment
`shown in FIG. 2, the isothermal body 16 is a hexagon
`cylinder and has six identical planes 161. Each ofthe planes
`161 is defined with at least one round groove 162. In the
`preferred embodiment shown in FIG. 2, there are three
`round grooves 162 defined 011the plane 162. FIG. 4 shows
`a partially enlarged figure ofthe isothermal body 16, each of
`the round grooves 162 is assembled with a light-emitting
`u11it 3.
`ln the shown preferred embodiment,
`the light­
`
`

`

`US 2007/0230 I72 A 1
`
`Oct. 4, 2007
`
`emitting unit 3 is realized by RFD. The light-emitting unit 3
`is connected to power source t_hroughthe electrode pin 31
`thereof where the electrode pin 31 is extended along the
`planes 161, as shown in FIG. 6.
`
`[0019] With reference back to FIG. 2, the lampshade 5 is
`also an annulus body and comprises a plurality of heat­
`dissipating plates 51. An accommodation space 52 is defined
`at center of the lampshade 5 and used to enclose the
`heat-dissipation unit 1. The reflection shell 7 is also a round
`hollow cylinder and arranged below the lampshade 5. An
`accommodation hole 72 is defned on top face 71 of the
`reflection shell 7 and through holes 73a and 7312are defined
`011both sides of the acconunodation hole 72. Tl1epositions
`of the t_hroughholes 7311a11d73b are corresponding to the
`concave holes 142a and 142b. Therefore, when the heat­
`dissipation u11it1 is asse111bledwith the reflection shell 7, the
`isothermal body 16 is placed i11tothe accorrunodation space
`52 and passes through the accommodation hole 72 for
`placing into the reflection shell 7. Screw elements 9a and 9b
`are used to lock the heat-dissipation unit 1 with the reflection
`shell 7.
`
`[U020] HG. 3 shows the operation of the LED lamp
`according to t_hepresent invention. After the light-emitting
`unit 3 is powered by an external power source, the light
`emitted fro111the ligl1t-emitting u11it 3 is focused by the
`reflection shell 7 a11dprojected outward. Therefore, the LED
`lamp according to the present
`invention can have high
`brightness. As shown in HG. 6, the heat produced during the
`operation of the light-emitting unit 3 is absorbed by the
`isothermal body 16. Afterward the heat is conducted to the
`heat-dissipation unit 1 through the wick structure and work­
`ing fluid in the isothermal body 16. The heat
`is then
`dissipated through the heat-dissipating plates 51 of the
`lampshade 5, thus ensuring nom1al operation of the light­
`emitting unit 3 and prolonging lifetime.
`[0021] Although the present invention has been described
`with reference to the preferred embodiment thereof. it will
`be understood that the invention is not limited to the details
`thereof Various substitutions and modifications have sug­
`gested in the foregoing description, and other will occur to
`those of ordinary skill in the art. Therefore, all such substi­
`tutions and modifications are intended to be embraced
`within the scope of the invention as defined in the appended
`claims.
`
`\Vhat is claimed is:
`1. A lamp with multiple light emitting faces, comprising
`
`a heat-dissipation unit comprising a first casing and a
`second casing, an annulus space defined between the
`first casing and the second casing, an isothermal body
`placed on a bottom surface of the second casing and
`being a hollow cylinder and communicated with the
`annulus space, the isothennal body comprising a plu­
`rality of planes on outer face thereof, each ofthe plane
`being defined with a groove thereon: and
`
`light-emitting Lmitarranged on the groove.
`2. The lamp with multiple light emitting faces as in claim
`1, wherein the first casing and the second casing are hollow
`casmgs.
`3. The lamp with multiple ligl1temitting faces as in claim
`1, wherein the annulus space is filled with wick structure and
`working fluid.
`4. The lamp with multiple light emitting faces as in claim
`l, wherein the isothermal body is integral with the second
`casing.
`5. The lamp with multiple light emitting faces as in claim
`1, wherein the isothermal body contains wick structure and
`working fluid therein.
`6. The lamp with multiple light emitting faces as in claim
`1, wherein the isothermal body is hexagon cylinder.
`7. The lamp with multiple light emitting faces as in claim
`1, wherein the isothermal body is octagon cylinder.
`8. The lamp with multiple light emitting faces as in claim
`l, wherein the light-emitting unit is light-emitting diode.
`9. The lamp with multiple ligl1temitting faces as in claim
`l, further comprising a lampshade arotmd the heat-dissipa­
`tion unit
`10. The lamp with multiple light emitting faces as in claim
`9, wherein the lampshade comprises a plurality of heat
`dissipating plates.
`11. The lamp with multiple light emitting faces as in claim
`l, ftu"thercomprising a reflection shell on bottom face of the
`heat dissipation unit.
`
`‘Y
`
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`
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`