CN101210666B - Lifting system and combined unit thereof - Google Patents
Lifting system and combined unit thereof Download PDFInfo
- Publication number
- CN101210666B CN101210666B CN200610171754A CN200610171754A CN101210666B CN 101210666 B CN101210666 B CN 101210666B CN 200610171754 A CN200610171754 A CN 200610171754A CN 200610171754 A CN200610171754 A CN 200610171754A CN 101210666 B CN101210666 B CN 101210666B
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- section portion
- jacking system
- basal plane
- section
- contact site
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Abstract
The invention discloses a lifting system which comprises a pedestal, a positioning element and a combined unit. The pedestal comprises a first base plane and a second base plane, wherein the second base plane comprises at least one first section and at least one second section. The positioning element can move between a first reference position and a first established position. The combined unit is connected with the positioning element and comprises a first device and a second device. The first device comprises a first body and the second device comprises a first element which has a first connection portion and a first contact portion, wherein the first connection portion of the first element is articulated with the first body, the first contact portion of the first element extends away from the first contact portion, and the first contact portion of the first element is detachably contacted with the first base plane.
Description
Technical field
The present invention relates to a kind of jacking system and assembled unit thereof, particularly relate to a kind of can for the object desiring the to hang jacking system and the assembled unit thereof that position, install or remove.
Background technology
Generally speaking, the illumination zone of less, the required setting of the shared area of high mast light fixture extensively and average height very high.Be the carrying out of convenient staff's maintenance activity, the height that the lamp socket that relevant lowering or hoisting gear needs light fixture can be used is reduced to the staff is good.
Yet, under the operation of wind-force than strong or the staff that experience is not good, lamp socket is to be increased to set locking point reposefully, and when be about to arriving the locking point, lamp socket also is easy to generate situations such as crooked, skew, cause trip can't correctly insert the locking point, so may cause lamp socket crooked, hang improperly or even have a generation of the situation of falling.
Summary of the invention
In view of this, the invention provides a kind of assembled unit, can position with respect to one first basal plane.Assembled unit of the present invention comprises one first device and one second device.First device comprises one first body, and first body can move between a primary importance and a second place.Second device comprises one first element, one second element and a three element, and first element moves between the primary importance and the second place in order to drive first body.First element comprises one first connecting portion and one first contact site, and wherein, first connecting portion of first element is articulated in first body, and first contact site of first element is to be contacted with first basal plane in separable mode.
When first element drove first body and moves to the second place by primary importance, first contact site of first element was contacted with first basal plane; When first element drove first body and moves to primary importance by the second place, first contact site of first element was contacted with first basal plane.First element can be a cantilever rod member.
Second device can comprise that more one second element, second element comprise one second connecting portion and one second contact site, and wherein, second connecting portion of second element is articulated in first body, and second contact site of second element is to be contacted with first basal plane in separable mode.Second element can be a cantilever rod member.Second element is in being parallel to first element in fact.Second element can be connected in first element.
Second device more can comprise one second element and a three element, wherein, second element comprises one second connecting portion and one second contact site, second connecting portion of second element is articulated in first body, second contact site of second element is to be contacted with first basal plane in separable mode, and three element is arranged between first element and second element.Second element can be a cantilever rod member.Second element is in being parallel to first element in fact.First element, second element and three element constitute a double rocker mechanism.
Assembled unit of the present invention more can comprise one the 3rd device, and the 3rd device is connected in second device, and the 3rd device moves between the primary importance and the second place in order to drive first body.The 3rd device can comprise a hawser, and hawser is connected in first element of second device.The 3rd device can comprise a hawser and a motor, and hawser is connected in first element of second device, and motor so moves between the primary importance and the second place with first body that drives first device in order to drive hawser.
Assembled unit of the present invention more can comprise a plurality of second devices, and these second devices are to be arranged at first device in the space mode.The quantity of second device is 3.
In addition, the present invention also provides a kind of jacking system, by jacking system with for the object being desired to hang (for example: light fixture) position, install or remove.
Jacking system of the present invention comprises a pedestal, a setting element and an assembled unit.Pedestal comprises one first basal plane and one second basal plane, and wherein, second basal plane comprises at least one first section portion and at least one second section portion.Setting element can both move between the allocation in one first reference position and one first.Assembled unit is connected in setting element.Assembled unit comprises one first device and one second device.First device comprises one first body.Second device comprises one first element, and first element comprises one first connecting portion and one first contact site, wherein, first connecting portion of first element is articulated in first body, first contact site of first element is extending away from the mode of first connecting portion, and first contact site of first element is first basal plane that is contacted with pedestal in separable mode.
When setting element moves to first both during allocation by first reference position, setting element is to move along first section portion and be positioned between first section portion and the second section portion, and first contact site of first element is contacted with first basal plane of pedestal.When setting element when both allocation had moved towards first reference position by first, setting element is to leave between first section portion and second section portion, and setting element moves along second section portion and first section portion in regular turn, and first contact site of first element is contacted with first basal plane of pedestal.First element can be a cantilever rod member.
Second device more can comprise one second element, second element comprises one second connecting portion and one second contact site, wherein, second connecting portion of second element is articulated in first body, and second contact site of second element is first basal plane that is contacted with pedestal in separable mode.Second element can be a cantilever rod member.Second element is in being parallel to first element in fact.Second element can be connected in first element.
Second device more can comprise one second element and a three element, wherein, second element comprises one second connecting portion and one second contact site, second connecting portion of second element is articulated in first body, second contact site of second element is first basal plane that is contacted with pedestal in separable mode, and three element is arranged between first element and second element.Second element can be a cantilever rod member.Second element is in being parallel to first element in fact.First element, second element and three element constitute a double rocker mechanism.
Assembled unit more can comprise one the 3rd device, and the 3rd device is connected in second device, and the 3rd device moves between the primary importance and the second place in order to drive first body.The 3rd device can comprise a hawser, and hawser is connected in first element of second device.In addition, the 3rd device can comprise a hawser and a motor, and hawser is connected in first element of second device, and motor so moves between the primary importance and the second place with first body that drives first device in order to drive hawser.
Assembled unit comprises a plurality of second devices, and these second devices are to be arranged at first device in the space mode.The quantity of second device can be 3.
Second basal plane more can comprise at least one positioning section portion, and positioning section portion is positioned between first section portion and the second section portion.Positioning section portion can be a groove that forms between first section portion and the second section portion.
Second basal plane more can comprise at least one positioning section portion and at least one the 3rd section portion, and positioning section portion is positioned between first section portion and the second section portion, and the 3rd section portion is positioned between first section portion and the second section portion.First section portion of second basal plane, positioning section portion, second section portion and the 3rd section portion's common formation one continuous enclosed type curved surface.
Thus, by jacking system just can be easily for the object desiring to hang position and attachment/detachment.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below:
Description of drawings
Fig. 1 is the stereogram of a jacking system E1 of the present invention, and wherein, jacking system E1 comprises a pedestal B, a setting element T1 and an assembled unit M1, and assembled unit M1 comprises one first device, 1,1 second device, 2 and 1 the 3rd device 3;
Fig. 2 A is the partial side view of the jacking system E1 of Fig. 1, and wherein, first device 1 of assembled unit M1 is in a primary importance h1;
Fig. 2 B is the partial side view of the jacking system E1 of Fig. 1, and wherein, first device 1 of assembled unit M1 is in a second place h2;
Fig. 2 C is the partial side view of the jacking system E1 of Fig. 1, and wherein, setting element T1 is in one first both allocation h3; And
Fig. 3 is the schematic diagram of the relevant mobile route of setting element T1.
The main element symbol description
1～the first device
11～the first bodies
110～hollow bulb
1100～madial wall
12～the second bodies
121～the first articulated sections
122～the second articulated sections
2～the second devices
21～the first elements
211～the first connecting portions
212～the first contact sites
22～the second elements
221～the second connecting portions
222～the second contact sites
23～the three element
230～Y type member
2300～U type opening
231～the first axle part
232～the second axle part
3～the 3rd devices
A-a～line segment
B～pedestal
B01～first basal plane
B02～second basal plane
B-1～first parts
B-2～second parts
B20～positioning section portion
B21～first section portion
B22～second section portion
B23～3rd section portion
B-3～the 3rd parts
D1～direction
D2～direction
E1～jacking system
H01～first reference position
H02～second reference position
H03～the 3rd reference position
H1～primary importance
H2～second place
H3～first be allocation both
M1～assembled unit
R～guiding area
R01～arc end part
R02～arc end part
R1～first guidance part
R2～second guidance part
R3～the 3rd guidance part
T1～setting element
W '～part weight
Z～zone
The specific embodiment
Fig. 1 is a jacking system E1 of the present invention.Jacking system E1 comprises a pedestal B, a setting element T1 and an assembled unit M1, and wherein, assembled unit M1 can carry out upper and lower moving with respect to pedestal B and the direction d1 direction opposite each other with direction d2 along a direction d1 or other direction d2.
Assembled unit M1 comprises one first device, 1,1 second device, 2 and 1 the 3rd device 3, and wherein, second device 2 is arranged on first device 1, and the 3rd device 3 is connected in second device 2.In the present embodiment, included second device, 2 the quantity of assembled unit M1 is 3, and between these second devices 2 be with mutually uniformly-spaced mode be arranged at first device 1.
Setting element T1 is connected in assembled unit M1, utilizes setting element T1 to carry out moving between the diverse location in the mode with respect to pedestal B for assembled unit M1.In the present embodiment, setting element T1 is a cylinder component.
Fig. 2 A, Fig. 2 B, Fig. 2 C carry out schematic diagram under three kinds of different conditions under the part section for the jacking system E1's of Fig. 1 along a line segment a-a, wherein, Fig. 2 A represents that first device 1 of assembled unit M1 is in a primary importance h1, Fig. 2 B represents that first device of assembled unit M1 1 is in a second place h2, and Fig. 2 C represents that setting element T1 is in one first both allocation h3.Primary importance h1, second place h2 represent first device, 1 any different both heights position in moving process of assembled unit M1 respectively, first both allocation h3 represent that then setting element T1 is in one under the state that be positioned and locatees the position.
Fig. 3 represents according to the partial sectional view among the regional Z of Fig. 2 C, wherein, when setting element T1 is positioned at first both during allocation h3, represent that then setting element T1 is positioned at the position location, that is assembled unit M1 is in a location state.
In the present embodiment, jacking system E1 is a kind of erecting by overhang that is applied in high mast light fixture, thus with can with the object being desired to hang (for example: light fixture) (but not icon) positions, installs or remove via assembled unit M1, and utilizes setting element T1 to position for the light fixture on first device 1 that is arranged at assembled unit M1.
By Fig. 1, Fig. 3 as can be known, pedestal B is T type member just like, and pedestal B includes one first parts b-1, one second parts b-2 and one the 3rd parts b-3.The first parts b-1 be a cylindrical component (for example: electric pole), and have one first basal plane b01 in the outside of the first parts b-1.The second parts b-2 is a discoid component that is arranged at the top of the first parts b-1.The 3rd parts b-3 is that member is used in a location that is arranged at the second parts b-2, and comprises just like U type guiding area R and one second basal plane b02 in the 3rd parts b-3.Guiding area R comprises one first guidance part r1, one second guidance part r2 and one the 3rd guidance part r3, and wherein, the first guidance part r1 and the second guidance part r2 are connected in the 3rd guidance part r3 and have constituted the seemingly outward appearance of U type.The second basal plane b02 is a particular curvature of the outside of the first guidance part r1, the second guidance part r2 of guiding area R and the 3rd guidance part r3.The second basal plane b02 comprises a b20 of positioning section portion, one first section b21 of portion, one second section b22 of portion and one the 3rd section b23 of portion, wherein, the b20 of positioning section portion is between first section b21 of portion and second section b22 of portion, the 3rd section b23 of portion is between first section b21 of portion and second section b22 of portion, and setting element T1 is positioned the b20 of positioning section portion between first section b21 of portion and the second section b22 of portion in separable mode.
In the present embodiment, first section b21 of portion, second section b22 of portion and the 3rd section b23 of portion are the face that inclines with bent type shape, the b20 of positioning section portion is for forming the bent type groove (recess) between first section b21 of portion and the second section b22 of portion, and first section b21 of portion of the second basal plane b02, the b20 of positioning section portion, second section b22 of portion and the 3rd section b23 of portion formation one continuous enclosed type curved surface jointly.
Second device 2 comprises one first element 21, one second element 22 and a three element 23.First element 21 comprises one first connecting portion 211 and one first contact site 212, wherein, first connecting portion 211 is articulated in first articulated section 121 of second body 12, first contact site 212 is to extend away from the mode of first connecting portion 211, and first contact site 212 is the first basal plane b01 that are contacted with pedestal B in separable mode, so to have constituted a cantilever rod member.Second element 22 comprises one second connecting portion 221 and one second contact site 222, wherein, second connecting portion 221 is articulated in second articulated section 122 of first body 11, second contact site 222 is to extend away from the mode of second connecting portion 221, and second contact site 222 is the first basal plane b01 that are contacted with pedestal B in separable mode, so to have constituted another cantilever rod member.Three element 23 articulates a Y type member that is arranged between first element 21 and second element 22, and setting element T1 is arranged on the three element 23 in the mode of protruding.Three element 23 comprises a Y type body 230, a first axle part 231 and a second axle part 232.Setting element T1 is to protrude from the outer surface of Y type body 230.Y type body 230 comprises a U type opening 2300, wherein, Y type body 230 is cross-placed on second body 12 via U type opening 2300, be to be arranged at Y type body 230 between the first axle part 231 and the second axle part 232, and the first axle part 231 and the second axle part 232 are articulated in first element 21, second element 22 of second device 2 respectively with space and the mode by U type opening 2300.Hence one can see that, first element 21 of second device 2 is articulated in first articulated section 121 of second body 12, the first axle part 231 of three element 23 in order, and second element 22 of second device 2 is articulated in second articulated section 122 of second body 12, the second axle part 232 of three element 23 in order.Under the induced effect of three element 23 movably with the restriction of second body 12 of first device 1 under, first element 21 that is parallel to each other, second element 22 and first install 1 second body 12 and have constituted a double rocker mechanism jointly.In the present embodiment, first element 21, second element 22 are for having two rod members of same structure.
The 3rd device 3 is for power set of the Y type body 230 that is connected in second device, 2 three element 23, and is mobile between primary importance h1 and second place h2 to drive first body 11 by the 3rd device 3.The 3rd device 3 comprises a hawser 31, a motor 32 and a guide wheel group 33.Motor 32 is arranged on the first parts b-1 of pedestal B, and guide wheel group 33 is arranged on the second parts b-2 of pedestal B.Hawser 31 is connected in first element 21 of second device 2 via guide wheel group 33, motor 32 so moves between primary importance h1 and second place h2 with first body 11 that drives first device 1 in order to drive hawser 31.
Therefore, install at each second device, 2 first element 21 and second element the 22, the 3rd under the co-operate of 3 hawser 31, keep a both set a distance and guarantee that first installs 1 first body 11 and (for example: level) remain on a set state between the interior sidewall surface 110 of first device, 1 first body 11 and the first basal plane b01 of the first parts b-1 of pedestal B, and under the driving effect of the 3rd device 3 hawser 31, first body 11 of first device 1 can move back and forth between primary importance h1 and second place h2.
By the mobile route figure of setting element T1 shown in Figure 3 as can be known, be subjected to as setting element T1 under the driving of the 3rd device 3 hawser 31, setting element T1 moves along direction d1 and when being contacted with first section b21 of portion of the second basal plane b02, at this position that setting element T1 is contacted with first section b21 of portion of the second basal plane b02 is defined as one first reference position h01.
When by the 3rd device 3 hawser 31 continue to drive for setting element T1 the time, setting element T1 just moves along first section b21 of portion and has passed through the arc end part r01 of the first guidance part r1, and at first device 1 and a plurality of second device, part weight W of 2 that setting element T1 is connected ' effect under, setting element T1 just is led to the b20 of positioning section portion between first section b21 of portion and the second section b22 of portion, and this moment, first contact site 212, second contact site 222 of second element 22 of first element 21 kept in touch in the first basal plane b01.
When the 3rd device 3 hawser 31 stops to drive for setting element T1, setting element T1 just can be located in the b20 of positioning section portion between first section b21 of portion and the second section b22 of portion, will be defined as the first both allocation h3 in the position of the setting element T1 of the b20 of positioning section portion between first section b21 of portion and the second section b22 of portion in this.In other words, when the 3rd device 3 hawser 31 stops to drive for setting element T1 and setting element T1 when being positioned the b20 of positioning section portion between first section b21 of portion and the second section b22 of portion, just first of the assembled unit M1 device 1 is in a location state, and first contact site 212 of first element 21, second contact site 222 of second element 22 still keep in touch in the first basal plane b01 at this moment.
When by the driving once more for the b20 of positioning section portion of position between first section b21 of portion and second section b22 of portion of the 3rd device 3 hawser 31, setting element T1 has left the b20 of positioning section portion and has moved and passed through the arc end part r02 of the second guidance part r2 along second section b22 of portion along direction d1.At this position that setting element T1 is contacted with the arc end part r02 of the second guidance part r2 is defined as one second reference position h02.At first device 1 and a plurality of second device, part weight W of 2 that setting element T1 is connected ' effect under, setting element T1 just is led to the 3rd section b23 of portion and carries out along the moving down of direction d2 along the 3rd section b23 of portion, and this moment, first contact site 212, second contact site 222 of second element 22 of first element 21 still kept in touch in the first basal plane b01.
Under the driving force of the hawser 31 of suitably adjusting the 3rd device 3, the setting element T1 that moves along the 3rd section b23 of portion just can fully break away from from the second basal plane b02 of the 3rd parts b-3, in this setting element T1 is defined as one the 3rd reference position h03 from the position that the second basal plane b02 of the 3rd parts b-3 breaks away from fully.Under the second basal plane b02 with respect to the 3rd parts b-3, the second reference position h02 is the accessible extreme higher position of setting element T1, and the 3rd reference position h03 is the accessible extreme lower position of setting element T1.
In brief, no matter be the forward and backward of the setting element T1 second basal plane b02 that is contacted with the 3rd parts b-3, or setting element T1 contacts mobile along the second basal plane b02 of the 3rd parts b-3, first contact site 212 of first element 21, second contact site 222 of second element 22 remain and are contacted with the first basal plane b01, remain on set state with first body 11 of guaranteeing first device 1 thus.
Thus, by jacking system E1 just can be easily for the objects such as light fixture desiring to hang position, install or remove.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to restriction the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; change and retouching when doing, thus protection scope of the present invention should with enclose claim was defined is as the criterion.
Claims (15)
1. jacking system comprises:
One pedestal comprises one first basal plane and one second basal plane, and wherein, this second basal plane comprises at least one first section portion and at least one second section portion;
One setting element can both move between the allocation in one first reference position and one first; And
One assembled unit is connected in this setting element, and this assembled unit comprises:
One first device comprises one first body; And
One second device, comprise one first element, one second element and a three element, this first element comprises one first connecting portion and one first contact site, wherein, this first connecting portion of this first element is articulated in this first body, this first contact site of this first element is to extend away from the mode of this first connecting portion, and this first contact site of this first element is to be contacted with this first basal plane in separable mode, this second element comprises one second connecting portion and one second contact site, this second connecting portion of this second element is articulated in this first body, this second contact site of this second element is to be contacted with this first basal plane in separable mode, this three element articulates this first element and this second element, and be arranged between this first element and this second element, and this setting element is to be arranged on the three element in the mode of protruding;
When this setting element moves to this first both during allocation by this first reference position, this setting element is to move and be positioned between this first section portion and this second section portion along this first section portion, and this first contact site of this first element is contacted with this first basal plane;
When this setting element by this first when both allocation had moved towards this first reference position, this setting element is to leave between this first section portion and this second section portion, and this setting element moves along this second section portion and this first section portion in regular turn, and this first contact site of this first element is contacted with this first basal plane.
2. jacking system as claimed in claim 1, wherein, this first element comprises a cantilever rod member.
3. jacking system as claimed in claim 1, wherein, this second element comprises a cantilever rod member.
4. jacking system as claimed in claim 1, wherein, this second element is in being parallel to this first element in fact.
5. jacking system as claimed in claim 1, wherein, this second element is connected in this first element.
6. jacking system as claimed in claim 1, wherein, this first element, this second element and this three element constitute a double rocker mechanism.
7. jacking system as claimed in claim 1, wherein, this assembled unit more comprises one the 3rd device, and the 3rd device is connected in this second device, and the 3rd device moves between a primary importance and a second place in order to drive this first body.
8. jacking system as claimed in claim 7, wherein, the 3rd device comprises a hawser, this hawser is connected in this first element of this second device.
9. jacking system as claimed in claim 7, wherein, the 3rd device comprises a hawser and a motor, this hawser is connected in this first element of this second device, this motor so moves between this primary importance and this second place with this first body that drives this first device in order to drive this hawser.
10. jacking system as claimed in claim 1, wherein, this assembled unit more comprises a plurality of second devices, these second devices are to be arranged at this first device in the space mode.
11. jacking system as claimed in claim 10, wherein, the quantity of these second devices is 3.
12. jacking system as claimed in claim 1, wherein, this second basal plane more comprises at least one positioning section portion, and this positioning section portion is positioned between this first section portion and this second section portion.
13. jacking system as claimed in claim 12, wherein, this positioning section portion is for forming the groove between this first section portion and this second section portion.
14. jacking system as claimed in claim 1, wherein, this second basal plane more comprises at least one positioning section portion and at least one the 3rd section portion, and this positioning section portion is positioned between this first section portion and this second section portion, and the 3rd section portion is positioned between this first section portion and this second section portion.
15. jacking system as claimed in claim 14, wherein, first section portion of this of this second basal plane, this positioning section portion, this second section portion and the 3rd section portion's common formation one continuous enclosed type curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610171754A CN101210666B (en) | 2006-12-29 | 2006-12-29 | Lifting system and combined unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610171754A CN101210666B (en) | 2006-12-29 | 2006-12-29 | Lifting system and combined unit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101210666A CN101210666A (en) | 2008-07-02 |
| CN101210666B true CN101210666B (en) | 2010-05-19 |
Family
ID=39610863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610171754A Expired - Fee Related CN101210666B (en) | 2006-12-29 | 2006-12-29 | Lifting system and combined unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101210666B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182970B (en) * | 2011-05-03 | 2012-07-04 | 谢明江 | Bright safe landscape floodlight |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237530A (en) * | 1977-12-12 | 1980-12-02 | Rowe Industries Inc., Division Of Groman Corporation | High mast light support system |
| US4348717A (en) * | 1977-07-25 | 1982-09-07 | General Electric Company | Luminaire lowering device with centering means |
| US5975726A (en) * | 1997-09-19 | 1999-11-02 | Quality Lighting | High mast lighting system |
| CN2562066Y (en) * | 2002-08-01 | 2003-07-23 | 北京爱德威金属杆交通照明技术有限公司 | Liftable post light |
| EP1674791A1 (en) * | 2004-01-15 | 2006-06-28 | Light Boy Co., Ltd | Projector |
-
2006
- 2006-12-29 CN CN200610171754A patent/CN101210666B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348717A (en) * | 1977-07-25 | 1982-09-07 | General Electric Company | Luminaire lowering device with centering means |
| US4237530A (en) * | 1977-12-12 | 1980-12-02 | Rowe Industries Inc., Division Of Groman Corporation | High mast light support system |
| US5975726A (en) * | 1997-09-19 | 1999-11-02 | Quality Lighting | High mast lighting system |
| CN2562066Y (en) * | 2002-08-01 | 2003-07-23 | 北京爱德威金属杆交通照明技术有限公司 | Liftable post light |
| EP1674791A1 (en) * | 2004-01-15 | 2006-06-28 | Light Boy Co., Ltd | Projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101210666A (en) | 2008-07-02 |
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