CN100507348C - Copper coin type projector and its light-emitting unit - Google Patents
Copper coin type projector and its light-emitting unit Download PDFInfo
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- CN100507348C CN100507348C CNB2006101269561A CN200610126956A CN100507348C CN 100507348 C CN100507348 C CN 100507348C CN B2006101269561 A CNB2006101269561 A CN B2006101269561A CN 200610126956 A CN200610126956 A CN 200610126956A CN 100507348 C CN100507348 C CN 100507348C
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Abstract
The invention discloses a copper coin type projection lamp and the luminescence unit thereof, and comprises a projection lamp casing and a copper coin type luminescence unit arranged in the projection lamp casing. The copper coin type luminescence unit is a luminescence component formed by enclosing a plurality of LED chips, and is matched with a constant current controller to form a constant current and high power thin luminescence unit; the projection lamp casing comprises a casing body and a front cover provided with transmission areas, the bottom part of the casing body is allocated with an external electric power line through a water resistance bolt connector, an inner cylinder base is arranged in the hollow part of the casing body, the copper coin type luminescence unit and the constant current controller and the connector are electrically allocated, the connector is connected with the external electric power line to get a working power supply, thus the problems that the projection lamp is miniaturization, the application of the supply voltage of most LED luminescence units connected in series is restricted, the energy saving property is poor, and the service life is short are overcome.
Description
Technical field
Copper coin type projector of the present invention and luminescence unit thereof, especially the LED luminescence unit that refers to a kind of tool constant current, high-power and copper coin formula slimming, collocation projection lamp housing Combination Design, form small size, be easy to a plurality of series and parallels and connect and set the projecting lamp of putting, have slimming of the projecting lamp of improvement volume and track restriction is set, and LED luminescence unit job stability, energy saving and increase the service life.
Background technology
Known, be applied to the projecting lamp of projection illumination at present, all be to use general based on halogen bulb, but problems such as highly energy-consuming and High Temperature are arranged, again, low power consuming characteristic along with light emitting diode (LED), and no matter be on brightness or the application technology maturation with progress greatly, the low power consuming that utilizes light emitting diode (LED) to make is arranged then, the LED bulb of high brightness uses to substitute traditional based on halogen bulb, only, present commercially available most applications is all still possessed the external form of traditional based on halogen bulb in the LED of projecting lamp bulb, certainly the projecting lamp volume formed of institute's lamp housing that is disposed at also can't dwindle, and all still needs matching track to do to electrically connect the location to dispose; In addition, above-mentioned LED bulb, even have powerful luminous efficacy, but its operating voltage applicatory is very narrow, in other words, has relatively high expectations for the supply voltage of electrical assembling, especially when external power supply voltage produces instability, the LED bulb promptly can't remain in the constant or stable current status and work, and makes shorten the service life of LED bulb, and its energy saving also can be affected certainly.
Again, " high conduction radiator structure " utility model patent that this country's patent gazette is M269398 number, the emphasis of this patent case institute demand is to be a plurality of tradition are formed the LED array with the LED of individual packages on a circuit board, the power supply circuit of arranging in pairs or groups is arranged in the lamp outer casing, below the LED array, be provided with fin and fan in addition, make product brightness be promoted to peak and life of product prolongation.
Above-mentioned patent is identical with the LED projecting lamp of existing based on halogen bulb external form, all the LED by a plurality of individual packages forms LED array luminescence unit on a circuit board, directly produce light source by power supply unit control, there is supply voltage requirement height equally with existing structure, can't remain in the constant or stable current status and work, to shorten its service life, problems such as energy saving is not good, certain volume at the composition projecting lamp also can't be improved and dwindle, therefore, the LED projecting lamp desires to take into account service life, under energy saving and the stable duty thereof, cube slimming again obviously has its technical bottleneck to remain to be broken through.
Summary of the invention
Main purpose of the present invention, promptly be to solve the restriction and the disappearance of above-mentioned projecting lamp and LED luminescence unit thereof, avoid restriction and exist, the present invention becomes a plurality of led chip package group the luminescence component of one copper coin formula slimming, cooperate constant-current controller to form constant current, powerful luminescence unit, the projection lamp housing of collocation cartridge type design, to form the projecting lamp of miniaturization, for projecting lamp and LED luminescence unit thereof, and the supply voltage that improves projecting lamp volume and LED luminescence unit is suitable for restriction, energy saving and service life etc. problem, providing the user easier, cheap and practical projecting lamp that constant current is stable.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is: a kind of copper coin type projector and luminescence unit thereof comprise a copper coin type luminescence unit and a projection lamp housing;
Aforesaid copper coin type luminescence unit comprises:
One luminescence component utilizes the encapsulation technology lens packages of arranging in pairs or groups to form by a plurality of led chips;
One constant-current controller is composed in parallel by two constant-current control circuits, and electrically connecting with above-mentioned luminescence component provides constant operating current;
A connector is in order to electrically connect above-mentioned luminescence component, constant-current controller and circumscripted power line the supply working power;
Aforesaid projection lamp housing comprises:
One shell body, tool hollow inside;
One protecgulum combines with an end of above-mentioned shell body, is provided with a transparent area that runs through in its lid end face;
Cylinder base in one is located at above-mentioned shell body hollow inside, to set firmly above-mentioned luminescence component, constant-current controller and connector;
One device that is spirally connected, formed by the first spiral shell spare, the second spiral shell spare and the assembly that blocks water, run through in the assembly that blocks water in addition and be provided with circumscripted power line, this first spiral shell spare screws togather with the other end of above-mentioned shell body, screw togather packing by the second spiral shell spare and block water assembly, and make circumscripted power line extend shell body hollow inside in the first spiral shell spare.
This luminescence component has a substrate and a great power LED array optical assembly, this great power LED array optical assembly is made of above-mentioned a plurality of led chip, this great power LED array optical assembly cooperates said lens and encapsulation technology to be packaged in aforesaid substrate one end face, on substrate, more be provided with in addition at least one lockhole, with cooperate lock-in component sealed be positioned above-mentioned in cylinder base.
In a preferred embodiment of the present invention, this constant-current controller is to be composed in parallel by two constant-current control circuits; Each constant-current control circuit comprises:
One operational amplifier;
One pedestal generator provides the work bias current by first resistance that electrically connects, to produce the negative input end of a reference voltage to above-mentioned operational amplifier;
One sample resistance provides a sampling voltage to input to the positive input terminal of above-mentioned operational amplifier;
One switch module by the comparative result of above-mentioned operational amplifier according to reference voltage and sampling voltage, is controlled its conducting degree to control powerful copper coin type luminescence unit in constant-current supply work.
This connector sees through lead and above-mentioned constant-current controller and electrically connects, and is provided with a plurality of splicing ears to connect external power supply.
This protecgulum more comprises: be provided with a transparent area that runs through in its lid end face.
This protecgulum more comprises: be provided with a transparent area that runs through in its lid end face, and be provided with the lens of a tool light transmission.
Should in cylinder base more comprise: the barrel of a tool hollow bulb and by the positioning seat of barrel one end elongation moulding, at least one end face of this barrel be provided with at least one screw with lock above-mentioned luminescence component with set firmly constant-current controller, this positioning seat then cooperates a steady pin to set firmly above-mentioned connector.
Described copper coin type projector is characterized in that, this device that is spirally connected is made up of the first spiral shell spare, the second spiral shell spare and the assembly that blocks water; Be hollow in this first spiral shell spare, be respectively equipped with first screw part and second screw part in the outside side face of its two end, being provided with one below second screw part splits groove in addition; This second spiral shell spare screws togather with second screw part of the above-mentioned first spiral shell spare, closes in conjunction with above-mentioned assembly and the described groove bundle that splits of blocking water with packing; This assembly that blocks water is provided with at least one perforation that runs through, and forms the hollow inside that water proofing property extends shell body to wear circumscripted power line, with above-mentioned connector electric connection.
A kind of copper coin type luminescence unit is characterized in that, comprising: a luminescence component, utilize the encapsulation technology lens packages of arranging in pairs or groups to form by a plurality of led chips; One constant-current controller, this constant-current controller are to be composed in parallel by two constant-current control circuits, and provide constant operating current with above-mentioned luminescence component electric connection, and aforesaid each constant-current control circuit is to comprise: an operational amplifier; One pedestal generator provides the work bias current by first resistance that electrically connects, to produce the negative input end of a reference voltage to above-mentioned operational amplifier; One sample resistance provides a sampling voltage to input to the positive input terminal of above-mentioned operational amplifier; And a switch module by the comparative result of above-mentioned operational amplifier according to reference voltage and sampling voltage, is controlled its conducting degree to control powerful copper coin type luminescence unit in constant-current supply work; A connector is in order to electrically connect above-mentioned luminescence component, constant-current controller and circumscripted power line the supply working power.
This luminescence component has a substrate and a great power LED array optical assembly, this great power LED array optical assembly is made of above-mentioned a plurality of led chip, and this great power LED array optical assembly cooperates said lens and encapsulation technology to be packaged in aforesaid substrate one end face.
This great power LED array optical assembly be with above-mentioned a plurality of led chips with the naked core packaged type, the series and parallel that cooperates the routing technology to form between each naked core electrically connects, and is high-power to form one, the LED array optical assembly of long-pending bodyization.
This connector sees through lead and above-mentioned constant-current controller and electrically connects, and is provided with a plurality of splicing ears to connect external power supply.
Adopt beneficial effect of the present invention to be: a kind of copper coin type projector and luminescence unit thereof, especially the LED luminescence unit that refers to a kind of tool constant current, high-power and copper coin formula slimming, collocation projection lamp housing Combination Design, form small size, be easy to a plurality of series and parallels and connect and set the projecting lamp of putting, have slimming of the projecting lamp of improvement volume and track restriction is set, and LED luminescence unit job stability, energy saving and increase the service life.
See also the detailed description and the accompanying drawing thereof of following relevant a preferred embodiment of the present invention, can further understand technology contents of the present invention, purpose effect; And the accompanying drawing of relevant this embodiment.
Description of drawings
Fig. 1 is the composition structural upright decomposing schematic representation of one embodiment of the invention;
Fig. 2 is the LED array optical assembly electrical block diagram of one embodiment of the invention;
Fig. 3 is the routing kenel schematic diagram of the LED array optical assembly structure of one embodiment of the invention;
Fig. 4 is that the LED array optical assembly structure of one embodiment of the invention is formed the back schematic appearance;
Fig. 5 is the constant-current controller built-up circuit figure of one embodiment of the invention;
Fig. 6 is the Application Example wiring schematic diagram of the present invention with a plurality of copper coin type projectors;
Fig. 7 is the another Application Example wiring schematic diagram of the present invention with a plurality of copper coin type projectors;
Fig. 8 is the Another Application embodiment wiring schematic diagram of the present invention with a plurality of copper coin type projectors.
The specific embodiment
Relevant technology contents of the present invention and detailed description now cooperate graphic being described as follows:
See also shown in Figure 1ly, be the composition structural upright decomposing schematic representation of copper coin type projector of the present invention and luminescence unit thereof.As shown in the figure: copper coin type projector of the present invention and luminescence unit thereof, include: a copper coin type luminescence unit 1 and in order to the projection lamp housing 2 of installing copper coin type luminescence unit 1, constituting constant current, powerful slimming LED luminescence unit, and form small size, be easy to the projecting lamp that a plurality of series and parallels connect configuration.
The above-mentioned copper coin type luminescence unit of carrying 1 is made up of luminescence component 11, constant-current controller 12 and connector 13;
This luminescence component 11, have a substrate 111 and a great power LED array optical assembly 110, fit lens 14 is solidly plugged in corresponding four jacks 114 of substrate 111 with its four leg 141 and with encapsulation technology each emitting led single bare chip 113 of one great power LED array optical assembly 110 is packaged in the end face central authorities of aforesaid substrate 11, on substrate 11, more be provided with at least one lockhole 112 in addition, see through lockhole 112 sealed being positioned on the interior cylinder base 23 to cooperate lock-in component 15;
This constant-current controller 12 sees through lead and above-mentioned luminescence component 11 and LED array optical assembly 110 electrically connects, and in the work of constant current state, not influenced by outside input the unsettled of power supply with control LED array optical assembly 110;
This connector 13 sees through lead 132 and electrically connects with above-mentioned constant-current controller 12, and is provided with a plurality of splicing ears 131 to connect a pair of above external power supply.
Described projection lamp housing 2 is made of shell body 21, protecgulum 22, interior cylinder base 23 and the device 24 that is spirally connected;
This shell body 21 is one to have the cartridge type shell of hollow inside, and screw part 211 outside the outside end face of one end is provided with is preferably a pin thread moulding, and other holds screw part 212 in hollow inside is provided with, and is preferably a fine thread moulding;
The lid end face of this protecgulum 22 is provided with a transparent area that runs through 221, the lens 222 that transparent area 221 is preferably by a tool light transmission constitute, these lens 222 are closed on the flange 225 that radially extends one day on the flange that extends down on tool one day 223 tops with the marine glue (not shown), these lens 222 can be as reinforced plastics PC, and perhaps general glass or general acrylic plate are let alone one and made the water proofing property sealing.For making screwing togather of 21 of this protecgulum 22 and this shell bodies reach waterproof effect, flange 225 lower edges in flange 223 inwall tools one internal thread 224 tops, the water proof ring 226 of can arranging in pairs or groups is screwed together on the top 214 of outer screw part 211 of above-mentioned shell body 21, and the internal thread 224 of the flange 223 of this protecgulum 22 of a water proof ring 220 mats of arranging in pairs or groups again between the bottom of the flange 223 of the shoulder 213 of this shell body 21 and this protecgulum 22 reaches waterproof effect with the screwing togather of outer screw part 211 of this shell body 21;
Cylinder base 23 in being somebody's turn to do, has a barrel 231 that is provided with hollow bulb 232, and formed by the positioning seat 233 of barrel 231 1 end elongation mouldings, to be sheathed on the hollow inside of above-mentioned shell body 21, wherein this barrel 231 is provided with at least one screw 235 in its at least one end face, collocation hollow bulb 232 sets firmly with constant-current controller 12 and electrically connects with it with the luminescence component 11 that above-mentioned copper coin type luminescence unit 1 is provided, and 233 of this positioning seats cooperate the connector 13 of a steady pin 234 to set firmly copper coin type luminescence unit 1;
This device 24 that is spirally connected, formed by the first spiral shell spare 241, the second spiral shell spare 242 and the assembly 243 that blocks water, be hollow in this first spiral shell spare 241, outside side face in its two end, be made as first screw part 244 respectively with fine thread, and second screw part 245 that is provided with coarse-pitch thread, between these first screw part, 244 root edges and the first spiral shell spare 241, establish an annular ditch 248, establish the assembly 249 that blocks water in this annular ditch 248 again, being provided with one below second screw part 245 splits groove 246 in addition; These second spiral shell spare, 242 inwalls are provided with coarse-pitch thread, screw togather with second screw part 245 of the corresponding first spiral shell spare 241, and collocation is split groove 246 with the above-mentioned assembly 243 that blocks water of packing; This assembly 243 that blocks water runs through and is provided with at least one perforation 247, form the hollow inside that water proofing property extends shell body 21 to wear circumscripted power line 251, electrically connect with the connector 13 of above-mentioned copper coin type luminescence unit 1, with supply copper coin type luminescence unit 1 working power.
As shown in the above description, copper coin type projector of the present invention is by the top setting layer by layer of the assembly 243 that blocks water of second screw part 245 of block water assembly 249 and below of assembly 220,226, the first spiral shell spare 241 assembly that blocks water that blocks water, no matter copper coin type projector of the present invention is used in all have in indoor, outdoor, the floor water-proof function.
See also Fig. 2 to shown in Figure 4, for built-up circuit, the routing of the LED array optical assembly structure of copper coin type projector of the present invention and luminescence unit thereof and form schematic diagram.As shown in the figure: the LED array optical assembly 110 that is packaged in aforesaid substrate 111 in the present embodiment, be with the naked core packaged type with four large-power light-emitting diodes (LED) 113, the series and parallel that cooperates the routing technology to form between each naked core electrically connects, as Fig. 2, shown in Figure 3, high-power to form one, the LED array optical assembly 110 of long-pending body thin typeization, as shown in Figure 3.
See also shown in Figure 5ly, be the constant-current controller built-up circuit of copper coin type projector of the present invention and luminescence unit thereof and the schematic diagram that is connected with the luminescence component circuit.As shown in the figure: this constant-current controller 12 is that constant-current control circuit 121,122 by two same circuits structures composes in parallel in the present embodiment, to be connected to above-mentioned luminescence component 11; Each above-mentioned constant- current control circuit 121 or 122 comprises: an operational amplifier 123,123 '; One pedestal generator 124,124 ' provides the work bias current by first resistance 125,125 ' that electrically connects, to produce a reference voltage to above-mentioned operational amplifier 123,123 ' negative input end; One sample resistance 126,126 ' provides a sampling voltage to input to above-mentioned operational amplifier 123,123 ' positive input terminal; An and switch module 127,127 ', be preferably a triode, by above-mentioned operational amplifier 123,123 ' according to the reference voltage of input and the comparative result of sampling voltage, gauge tap assembly 127,127 ' conducting degree are to control powerful copper coin type luminescence unit 1 in constant current power supply environmental work.
See also Fig. 6, Fig. 7, shown in Figure 8, be the various different application wiring schematic diagrams of copper coin type projector of the present invention and luminescence unit thereof.As shown in the figure: after the copper coin type projector of present embodiment and luminescence unit thereof are formed according to said structure, use in the connection of most copper coin type projectors, the external power supply 25 of can parallel way and connecing a plurality of copper coin type projectors is connected lead 251 and connects use with one of power connector 13, as shown in Figure 6, certainly, on other is used, the external power supply 25 that also can series system connects a plurality of copper coin type projectors and power connector 13 be connected lead 251, as shown in Figure 7, in addition, also can see through a plurality of connection leads 251 and independently connect each copper coin type projector respectively, and the input power supply produces light source projects, as shown in Figure 8 by external power supply 25.
Above-mentioned luminescence component 11 is with the naked core packaged type with a plurality of large-power light-emitting diodes (LED) 113, cooperate the routing technology to form a LED array optical assembly 110, and application encapsulation technology fit lens 14 is packaged in aforesaid substrate 11 1 upper surfaces, control the constant of input currents with constant-current controller 12, with formation have constant current, high-power, operating voltage is wide and the copper coin type luminescence unit 1 of high energy saving, and prolongs its service life.
Simultaneously, above-mentioned copper coin type luminescence unit 1 cooperates projection lamp housing 2 configurations of tubular design, to form the projecting lamp of skilful small size (about 25mm diameter x 80mm length), be easy to the projecting lamp that a plurality of series and parallels connect configuration, to answer the user's demand and the application of various different occasions.
Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting the scope of the present invention.Be that all equalizations of being done according to the present patent application claim change and modification, be all claim of the present invention and contain.
Claims (12)
1, a kind of copper coin type projector is characterized in that, comprises a copper coin type luminescence unit and a projection lamp housing;
Aforesaid copper coin type luminescence unit comprises:
One luminescence component utilizes the encapsulation technology lens packages of arranging in pairs or groups to form by a plurality of led chips;
One constant-current controller provides constant operating current with above-mentioned luminescence component electric connection;
A connector is in order to electrically connect above-mentioned luminescence component, constant-current controller and circumscripted power line the supply working power;
Aforesaid projection lamp housing comprises:
One shell body, tool hollow inside;
One protecgulum combines with an end of above-mentioned shell body, is provided with a transparent area that runs through in its lid end face;
Cylinder base in one is located at above-mentioned shell body hollow inside, to set firmly above-mentioned luminescence component, constant-current controller and connector;
One device that is spirally connected screws togather with the other end of above-mentioned shell body, extends shell body hollow inside to form water proofing property location circumscripted power line.
2, copper coin type projector according to claim 1, it is characterized in that, this luminescence component has a substrate and a great power LED array optical assembly, this great power LED array optical assembly is made of above-mentioned a plurality of led chip, this great power LED array optical assembly cooperates said lens and encapsulation technology to be packaged in aforesaid substrate one end face, on substrate, more be provided with in addition at least one lockhole, with cooperate lock-in component sealed be positioned above-mentioned in cylinder base.
3, copper coin type projector according to claim 1 is characterized in that, this constant-current controller is to be composed in parallel by two constant-current control circuits; Aforesaid each constant-current control circuit comprises:
One operational amplifier;
One pedestal generator provides the work bias current by first resistance that electrically connects, to produce the negative input end of a reference voltage to above-mentioned operational amplifier;
One sample resistance provides a sampling voltage to input to the positive input terminal of above-mentioned operational amplifier; And,
One switch module by the comparative result of above-mentioned operational amplifier according to reference voltage and sampling voltage, is controlled its conducting degree to control powerful copper coin type luminescence unit in constant-current supply work.
4, copper coin type projector according to claim 1 is characterized in that, this connector sees through lead and above-mentioned constant-current controller and electrically connects, and is provided with a plurality of splicing ears to connect external power supply.
5, copper coin type projector according to claim 1 is characterized in that, this protecgulum more comprises: be provided with a transparent area that runs through in its lid end face.
6, copper coin type projector according to claim 1 is characterized in that, this protecgulum more comprises: be provided with a transparent area that runs through in its lid end face, and be provided with the lens of a tool light transmission.
7, copper coin type projector according to claim 1, it is characterized in that, should in cylinder base more comprise: the barrel of a tool hollow bulb and by the positioning seat of barrel one end elongation moulding, at least one end face of this barrel be provided with at least one screw with lock above-mentioned luminescence component with set firmly constant-current controller, this positioning seat then cooperates a steady pin to set firmly above-mentioned connector.
8, copper coin type projector according to claim 1 is characterized in that, this device that is spirally connected is made up of the first spiral shell spare, the second spiral shell spare and the assembly that blocks water;
Be hollow in this first spiral shell spare, be respectively equipped with first screw part and second screw part in the outside side face of its two end, being provided with one below second screw part splits groove in addition;
This second spiral shell spare screws togather with second screw part of the above-mentioned first spiral shell spare, closes in conjunction with above-mentioned assembly and the described groove bundle that splits of blocking water with packing;
This assembly that blocks water is provided with at least one perforation that runs through, and forms the hollow inside that water proofing property extends shell body to wear circumscripted power line, with above-mentioned connector electric connection.
9, a kind of copper coin type luminescence unit is characterized in that, comprising:
One luminescence component utilizes the encapsulation technology lens packages of arranging in pairs or groups to form by a plurality of led chips;
One constant-current controller, this constant-current controller are to be composed in parallel by two constant-current control circuits, and provide constant operating current with above-mentioned luminescence component electric connection, and aforesaid each constant-current control circuit is to comprise:
One operational amplifier;
One pedestal generator provides the work bias current by first resistance that electrically connects, to produce the negative input end of a reference voltage to above-mentioned operational amplifier;
One sample resistance provides a sampling voltage to input to the positive input terminal of above-mentioned operational amplifier; And,
One switch module by the comparative result of above-mentioned operational amplifier according to reference voltage and sampling voltage, is controlled its conducting degree to control powerful copper coin type luminescence unit in constant-current supply work;
A connector is in order to electrically connect above-mentioned luminescence component, constant-current controller and circumscripted power line the supply working power.
10, copper coin type luminescence unit according to claim 9, it is characterized in that, this luminescence component has a substrate and a great power LED array optical assembly, this great power LED array optical assembly is made of above-mentioned a plurality of led chip, and this great power LED array optical assembly cooperates said lens and encapsulation technology to be packaged in aforesaid substrate one end face.
11, copper coin type luminescence unit according to claim 10, it is characterized in that, this great power LED array optical assembly is with the naked core packaged type with above-mentioned a plurality of led chips, the series and parallel that cooperates the routing technology to form between each naked core electrically connects, one high-power to form, the LED array optical assembly of long-pending bodyization.
12, copper coin type luminescence unit according to claim 9 is characterized in that, this connector sees through lead and above-mentioned constant-current controller and electrically connects, and is provided with a plurality of splicing ears to connect external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101269561A CN100507348C (en) | 2006-09-11 | 2006-09-11 | Copper coin type projector and its light-emitting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101269561A CN100507348C (en) | 2006-09-11 | 2006-09-11 | Copper coin type projector and its light-emitting unit |
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| Publication Number | Publication Date |
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| CN101144575A CN101144575A (en) | 2008-03-19 |
| CN100507348C true CN100507348C (en) | 2009-07-01 |
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| CNB2006101269561A Expired - Fee Related CN100507348C (en) | 2006-09-11 | 2006-09-11 | Copper coin type projector and its light-emitting unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI638961B (en) | 2018-05-18 | 2018-10-21 | 瑩林有限公司 | A led lamp and a lamp assembly having the same |
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2006
- 2006-09-11 CN CNB2006101269561A patent/CN100507348C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI638961B (en) | 2018-05-18 | 2018-10-21 | 瑩林有限公司 | A led lamp and a lamp assembly having the same |
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| CN101144575A (en) | 2008-03-19 |
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Granted publication date: 20090701 Termination date: 20190911 |