CN101901704A - Power-off protector and lighting device using same - Google Patents
Power-off protector and lighting device using same Download PDFInfo
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- CN101901704A CN101901704A CN2010102158172A CN201010215817A CN101901704A CN 101901704 A CN101901704 A CN 101901704A CN 2010102158172 A CN2010102158172 A CN 2010102158172A CN 201010215817 A CN201010215817 A CN 201010215817A CN 101901704 A CN101901704 A CN 101901704A
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Abstract
The invention is applied to the technical field of power-off protection, disclosing a power-off protector and a lighting device using the same. The power-off protector comprises a first basal lamina and a second basal lamina, wherein the first basal lamina is fixedly provided with a draw bar, the second basal lamina is movably sheathed on the draw bar, and a first elastic member is arranged between the first basal lamina and the second basal lamina; and one side of the first basal lamina opposite to the second basal lamina is fixedly provided with a first conducting strip, and one side of the second basal lamina opposite to the first basal lamina is fixedly provided with a second conducting strip which can be contacted with or separated from the first conducting strip. The lighting device comprises a shell component and a luminous component, wherein the luminous component is fixedly arranged in the shell component; and the shell component comprises an upper shell and a lower shell and is internally provided with a power-off protector. The power-off protector and the luminous device using the same provided by the invention have the characteristics of small volume, simple and easy installation and good reliability.
Description
Technical field
The invention belongs to the power-off protection technical field, relate in particular to a kind of power-off protection apparatus and use the lighting device of this power-off protection apparatus.
Background technology
In lighting device, particularly adopt in the lighting device of both-end HID light source, because the two ends connecting line of light source exposes in the outer end; when changing light source, the people might touch electrified body, therefore must install power-off protection apparatus additional; get an electric shock when preventing to change light source, avoid causing security incident.The general at present power-off protection apparatus that uses; basically be the structure that adopts plug-in; it comprises first substrate and second substrate; first substrate is fixed in the upper casing of lighting device; second substrate is fixed in the lower casing of lighting device; lead all is connected on the terminal on second substrate, and first substrate is provided with the conducting sheet, and the conducting sheet only works to be communicated with terminal when upper casing and lower casing are closed.When upper casing and lower casing closed, conducting sheet and corresponding termination contact made lead be communicated with closing of circuit; When upper casing was opened, the conducting sheet left terminal, and circuit is in off state.In the such structure of prior art, lead all is connected on second substrate, causes the overall volume of second substrate and device excessive, the installation of unfavorable product; And first substrate and second substrate need be individually fixed on upper casing and the lower casing, and complexity is installed, and higher to deciding required precision, poor reliability; In addition; contacting between the power-off protection apparatus of the prior art, conducting strip and terminal is the rigidity contact, and such structure is to product size required precision height; when the tolerance on the product corresponding construction is big, cause power-off protection apparatus to produce the bad phenomenon that lost efficacy or damaged easily.First substrate and second substrate in the power-off protection apparatus generally adopt the plastic material manufacturing; its thermal conductivity; heat resistance is relatively poor; and easy deformation; especially under the big situation of each electric conductor self-heating amount,, the temperature of first substrate and second substrate is constantly raise because heat can not in time be derived; the final bad phenomenon that produces distortion even burn, reliability of products is poor.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of power-off protection apparatus is provided and has used the lighting device of this power-off protection apparatus, its volume is little, it is simple and easy to install, and reliability is good.
Technical scheme of the present invention is: a kind of power-off protection apparatus, comprise first substrate and second substrate, and be installed with pull bar on described first substrate, described second substrate is movably set in described pull bar, is provided with first elastic component between described first substrate and second substrate; Be installed with first conducting strip with described second substrate side in opposite directions on described first substrate, be installed with second conducting strip that can contact or separate with described first conducting strip with described first substrate side in opposite directions on described second substrate.
Particularly, described first elastic component is sheathed on described pull bar.
More specifically, described pull bar one end is fixed in first substrate, and the other end is installed with locating part.
Preferably, described locating part is a nut.
Preferably, described first elastic component is a spring.
Further, be provided with second elastic component between described first conducting strip and described first substrate, be provided with the 3rd elastic component between described second conducting strip and described second substrate, the described first conducting strip central authorities are convex, and the described second conducting strip central authorities are convex.
Preferably, described second elastic component is a spring, and described the 3rd elastic component is a spring.
Preferably, the quantity that described first conducting strip is provided with is at least two, becomes two and is provided with, and the quantity that described second conducting strip is provided with is identical with the quantity that described first conducting strip is provided with.
Preferably, described first substrate and second substrate all adopt the ceramic material manufacturing.
Another technical scheme of the present invention is: a kind of lighting device, comprise that one is used for the housing unit of ccontaining illuminated component, described housing unit comprises upper casing and lower casing, be installed with a power-off protection apparatus that comprises first substrate and second substrate on the described lower casing, be installed with pull bar on described first substrate, described second substrate is movably set in described pull bar, is provided with first elastic component between described first substrate and second substrate; Be installed with first conducting strip with described second substrate side in opposite directions on described first substrate, be installed with second conducting strip with described first substrate side in opposite directions on described second substrate, be installed with a briquetting that can compress or unclamp first substrate on the described upper casing, make described first conducting strip contact or separate with second conducting strip.
A kind of power-off protection apparatus provided by the invention and use the lighting device of this power-off protection apparatus, it is arranged at first conducting strip on first substrate, and second conducting strip is arranged on second substrate, to dwindle the volume of power-off protection apparatus; First substrate is connected by pull bar with second substrate, makes power-off protection apparatus can connect into an integral module, is convenient to the installation of power-off protection apparatus; The 3rd elastic component that is provided with between second elastic component that further is provided with between first conducting strip and first substrate and second conducting strip and second substrate, but the tolerance of each part on the compensating illumination device, make first conducting strip and second conducting strip can be closely, contact reliably, product reliability is good; Material by first substrate, second substrate is set to ceramic material simultaneously, prevents the bad phenomenon that first substrate and second substrate produce distortion or burn, and product can at high temperature long-term operate as normal, and product reliability is good.
Description of drawings
Fig. 1 is the generalized section of a kind of power-off protection apparatus of providing of the embodiment of the invention;
Fig. 2 is another generalized section of a kind of power-off protection apparatus of providing of the embodiment of the invention;
Fig. 3 is the schematic perspective view of a kind of power-off protection apparatus of providing of the embodiment of the invention;
Fig. 4 is the partial cutaway schematic of a kind of lighting device of providing of the embodiment of the invention;
Fig. 5 is the schematic perspective view behind the dismounting upper casing of a kind of lighting device of providing of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As Fig. 1～shown in Figure 3, a kind of power-off protection apparatus that the embodiment of the invention provides in the device that can be used for cutting off the electricity supply automatically when uncapping, particularly, is used in the lighting device or other appropriate electrical device of air of cutting off the electricity supply automatically when uncapping.In the present embodiment, be applied in the lighting device, above-mentioned power-off protection apparatus comprises first substrate 100 and second substrate 200, be installed with pull bar 300 on first substrate 100, second substrate 200 is movably set in pull bar 300, so that first substrate 100 can move up and down by relative reliably second substrate 200, and need not first substrate 100 is aligned with second substrate 200 no contraposition required precision when installing; Be provided with first elastic component 410 between first substrate 100 and second substrate 200; Be installed with first conducting strip 110 with second substrate 200 side in opposite directions on first substrate 100, be electrically connected between first conducting strip 110 and the electrical appliance, be installed with between the power supply of second conducting strip, 210, the second conducting strips 210 that can contact with first conducting strip 110 or separate and power supply with first substrate 100 side in opposite directions on second substrate 200 and be electrically connected.First conducting strip 110 lock onto on first substrate 100 by bolt, and second conducting strip 210 lock onto on second substrate 200 by bolt.In the present embodiment, second conducting strip 210 is electrically connected on the power supply.Additionally, also electrical appliance can be electrically connected with second conducting strip 210, simultaneously power supply be electrically connected with first conducting strip 110, all belong to protection scope of the present invention.During installation, second substrate 200 is fixed on the lower casing 510 of lighting device, the upper casing of lighting device can compress or unclamp first substrate 100; Particularly, when upper casing and lower casing 510 were in place, upper casing was pressed in first substrate 100; When upper casing is taken apart, first substrate 100 will be in free state (with reference to shown in Figure 5).Under free state, under the restoring force effect of first elastic component 410, first conducting strip 110 on first substrate 100 and second conducting strip 210 on second substrate 200 are separated, first conducting strip 110 and second conducting strip 210 do not contact, power supply can't be connected on the electrical appliance, and circuit is in off-state (with reference to shown in Figure 1).When first substrate 100 to downward pressure the time, first elastic component 410 is compressed, first conducting strip 110 on first substrate 100 is contacted with second conducting strip 210 on second substrate 200, power supply can be connected with first conducting strip 110 and with electrical appliance by second conducting strip 210, and circuit can be in closure state (with reference to shown in Figure 4).When the pressure cancellation on effect first substrate 100, under the reset response of first elastic component 410, first substrate 100 moves upward, and first conducting strip 110 and second conducting strip 210 are separated, and make circuit be in off-state.To prevent that the operator from getting an electric shock, and avoids causing security incident when changing electrical appliance.Owing on first substrate 100 and second substrate 200, conducting strip is set respectively, power supply, electrical appliance can be connected to first substrate 100 and second substrate 200 respectively, the overall dimensions of first substrate 100 and second substrate 200 is dwindled, help the installation of power-off protection apparatus; With respect to power-off protection apparatus of the prior art, the size of first substrate 100 and second substrate 200 can be dwindled as far as possible, can save product such as lighting device volume inside, help improving the radiating effect of product internal electronic component, meet the lightening development trend of product; And when mounted, only need second substrate 200 is fixed on the lower casing of lighting device, and make fore shell be pressed in first substrate 100, install very simply, help improving the installation effectiveness of product.
Particularly, as depicted in figs. 1 and 2, first elastic component 410 is sheathed on pull bar 300 and between first substrate 100 and second substrate 200, prevents that first elastic component 410 from arbitrarily moving the reliability of structure height.Preferably, in the present embodiment, the quantity of the pull bar 300 and first elastic component 410 all is set to 4, so that first substrate 100 can move up and down by relative reliably second substrate 200 reliably.
Further, as depicted in figs. 1 and 2, pull bar 300 1 ends are fixed in first substrate 100, and the other end is installed with the locating part (not shown), and locating part is sheathed on the pull bar 300, skid off from pull bar 300 to prevent first substrate 100.By the setting of pull bar 300 and locating part, make first substrate 100 and second substrate 200 can be connected to an overall structure, be convenient to the modularization production and the installation of device.
Additionally, in structural design particularly, it is spacing also can to adopt gathering sill or guide post that first substrate 100 and second substrate 200 are carried out, and relative only second substrate 200 of first substrate 100 is moved up and down.Perhaps, also can on first substrate 100 and second substrate 200, offer depression in opposite directions respectively, first elastic component 410 is arranged in the depression, thereby relative only second substrate 200 of first substrate 100 is moved up and down.Owing to only need when installing second substrate 200 is fixed on the lower casing of lighting device, install very simply, help improving the installation effectiveness of product.
Preferably, locating part is a nut, can adopt standard component, and cost is low and be convenient to dismounting, offers external screw thread on the pull bar 300, and locating part is sheathed on the pull bar 300.
Preferably, first elastic component 410 is a spring, can adopt standard component, and its good springiness and cost are low.
Further, as Fig. 1, Fig. 2 and shown in Figure 4, be provided with between second elastic component, 420, the second conducting strips 210 and second substrate 200 between first conducting strip 110 and first substrate 100 and be provided with the 3rd elastic component 430, first conducting strip, 110 central authorities are convex, and second conducting strip, 210 central authorities are convex.Preferably, in the present embodiment, first conducting strip 110 and second conducting strip 210 all are " several " font.By the strain of second elastic component 420 and the 3rd elastic component 430, make first conducting strip 110 and second conducting strip 210 can correspondingly produce to a certain degree strain.By such design, between first conducting strip 110 and second conducting strip 210 is Elastic Contact, between first conducting strip 110 and second conducting strip 210 certain buffering surplus is arranged, to the dimensional accuracy of each parts of product and installation accuracy require low, at first substrate 100 when second substrate, 200 directions are moved, strain by first conducting strip 110 and second conducting strip 210, can eliminate the tolerance on each part of product, make first conducting strip 110 can keep closely, to contact reliably with second conducting strip 210, reliability of products is good.
Preferably, second elastic component 420 is a spring, and the 3rd elastic component 430 is a spring, can select standard component for use, and its good springiness, reliability is good and cost is low.
Preferential treatment, the quantity that first conducting strip 110 is provided with is at least two, becomes two and is provided with, the quantity that second conducting strip 210 is provided with is identical with the quantity that first conducting strip 110 is provided with.In the present embodiment; the quantity of first conducting strip 110 and second conducting strip 210 all is set to two; the positive and negative electrode of power supply can be connected on two second conducting strips 210; and the positive and negative electrode of electrical appliance is connected on two first conducting strips 110; can obtain the protection effect of two-way outage, the reliability of products height.Additionally, the quantity of first conducting strip 110 and second conducting strip 210 also can be set to one, three, nine, ten or other suitable quantity, all belong to protection scope of the present invention, can be connected in second conducting strip 210 by a wherein utmost point, and a wherein utmost point of electrical appliance is connected in first conducting strip 110 power supply; Also positive pole, negative pole, the earth electrode of one or more power supplys can be connected to first conducting strip 110, and positive and negative electrode, the earth electrode of one or more electrical appliances connected respectively on second conducting strip 210.The quantity of first conducting strip 110 and second conducting strip 210 can be set according to actual conditions.
Preferably, first substrate 100 and second substrate 200 all adopt the ceramic material manufacturing, ceramic material thermal conductivity, good, the on-deformable advantage of heat resistance have been utilized, electric conductor can in time be derived as the heat on first conducting strip 110, second conducting strip 210, avoid the temperature of first substrate 100 and second substrate 200 too high, prevent the bad phenomenon that first substrate 100 and second substrate 200 produce distortion or burn, product can at high temperature long-term operate as normal, and product reliability is good.
A kind of power-off protection apparatus that the embodiment of the invention provides, it is arranged at first conducting strip 110 on first substrate 100, and second conducting strip 210 is arranged on second substrate 200, to dwindle the volume of power-off protection apparatus; First substrate 100 is connected by pull bar 300 with second substrate 200, makes power-off protection apparatus can connect into an integral module, is convenient to the installation of power-off protection apparatus; The 3rd elastic component 430 that is provided with between second elastic component 420 that further is provided with between first conducting strip 110 and first substrate 100 and second conducting strip 210 and second substrate 200, but the tolerance of each part on the compensating illumination device, make first conducting strip 110 and second conducting strip 210 can be closely, contact reliably, product reliability is good; Material by first substrate 100, second substrate 200 is set to ceramic material simultaneously, prevents the bad phenomenon that first substrate 100 and second substrate 200 produce distortion or burn, and product can at high temperature long-term operate as normal, and product reliability is good.
The embodiment of the invention also provides a kind of lighting device, as Fig. 1, Fig. 2, Fig. 4 and shown in Figure 5, comprise that one is used for the housing unit of ccontaining illuminated component 520, described housing unit comprises upper casing (not shown) and lower casing 510, be installed with a power-off protection apparatus that comprises first substrate 100 and second substrate 200 on the described lower casing 510, be installed with pull bar 300 on described first substrate 100, described second substrate 200 is movably set in described pull bar 300, is provided with first elastic component 410 between described first substrate 100 and second substrate 200; Be installed with first conducting strip 110 with described second substrate 200 side in opposite directions on described first substrate 100, be installed with second conducting strip 210 with described first substrate 100 side in opposite directions on described second substrate 200, be installed with a briquetting (not shown) that can compress or unclamp first substrate 100 on the described upper casing, make described first conducting strip 110 contact or separate with second conducting strip 210.Preferably, in the present embodiment, illuminated component 520 is the both-end Metal halogen lamp of 1000W for power.The quantity of first conducting strip 110 is set to two, and is electrically connected by the positive and negative electrode of lead with illuminated component 520 respectively; The quantity that second conducting strip 210 is provided with is two, and is electrically connected with the positive and negative electrode of power supply with lead respectively.When upper casing is fixed on the lower casing 510 and upper casing when being in place, the briquetting on the upper casing is pressed on first substrate 100, and first conducting strip 110 on first substrate 100 is contacted with second conducting strip 210 on second substrate 200, and circuit is in closure state.When operating personnel with upper casing when lower casing 510 is pulled down, upper casing does not contact with first substrate 100, the pressure that upper casing is acted on first substrate 100 disappears, first substrate 100 is under the resetting of first elastic component 410, first conducting strip 110 is separated mutually with second conducting strip 210, and circuit is in off-state.Power is that the average life span of the both-end Metal halogen lamp of 1000W has only 4000 hours, will change the both-end Metal halogen lamp inevitably.Though could change illuminated component 520 after in sign, having requirement to cut off the power supply, but because lighting device generally has the function of remote triggering, mains switch is generally all far from lighting device, therefore can not get rid of the possibility that mains switch is connected in personnel's misoperation.In the present embodiment; because lower casing 510 also needs to be used for singl-end lamp tool; the fixed position of leaving power-off protection apparatus for is very little; have only one side can draw lead; because first conducting strip 110 and second conducting strip 210 are set respectively on first substrate 100 and second substrate 200; power supply, illuminated component 520 are connected to first conducting strip 110 and second conducting strip 210 on first substrate 100 and second substrate 200 respectively; the overall dimensions of first substrate 100 and second substrate 200 is dwindled, help the installation of power-off protection apparatus.Simultaneously, because the power of both-end Metal halogen lamp is 1000W, caloric value is big, the housing unit temperature inside can reach more than 230 degree, and the electric current by lead can reach 7A, the caloric value of lead, first conducting strip 110, second conducting strip 210 self is also very big, therefore there is not plastic material can be used as first substrate 100 and second substrate, 200 materials reliably, present embodiment passes through the material of ceramic material as first substrate 100 and second substrate 200,, can make first substrate 100 and second substrate 200 can high temperature under long-term operate as normal.When first substrate 100 and second substrate 200 are fitted, elastic compression distortion by first conducting strip 110, second conducting strip 210, second elastic component 420 and the 3rd elastic component 430, can make contact between first conducting strip 110 and second conducting strip 210 closely, reliable, but the influence that each part tolerance of compensation product brings, the product required precision is low.Used the lighting device of above-mentioned power-off protection apparatus, satisfied harsh requirement simultaneously, realized the function of uncovering power-off protection well the material and parts size.Operating personnel are when taking that upper casing is changed illuminated component 520 apart or other internal electronic device safeguarded, can guarantee that product is when taking upper casing apart, the two-way circuit of power supply and illuminated component 520 and other electronic device disconnects, prevent that operating personnel from getting an electric shock when changing illuminated component 520 or maintain internal electronic device spare, avoid causing security incident, the product reliability height.
Below only be preferred embodiment of the present invention,, all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (10)
1. a power-off protection apparatus comprises first substrate and second substrate, it is characterized in that: be installed with pull bar on described first substrate, described second substrate is movably set in described pull bar, is provided with first elastic component between described first substrate and second substrate; Be installed with first conducting strip with described second substrate side in opposite directions on described first substrate, be installed with second conducting strip that can contact or separate with described first conducting strip with described first substrate side in opposite directions on described second substrate.
2. a kind of power-off protection apparatus as claimed in claim 1 is characterized in that: described first elastic component is sheathed on described pull bar.
3. a kind of power-off protection apparatus as claimed in claim 1 is characterized in that: described pull bar one end is fixed in first substrate, and the other end is installed with locating part.
4. a kind of power-off protection apparatus as claimed in claim 3 is characterized in that: described locating part is a nut.
5. a kind of power-off protection apparatus as claimed in claim 1, it is held to levy and is: described first elastic component is a spring.
6. as each described a kind of power-off protection apparatus in the claim 1 to 5; it is characterized in that: be provided with second elastic component between described first conducting strip and described first substrate; be provided with the 3rd elastic component between described second conducting strip and described second substrate; the described first conducting strip central authorities are convex, and the described second conducting strip central authorities are convex.
7. a kind of power-off protection apparatus as claimed in claim 6 is characterized in that: described second elastic component is a spring, and described the 3rd elastic component is a spring.
8. as each described a kind of power-off protection apparatus in the claim 1 to 5, it is characterized in that: the quantity that described first conducting strip is provided with is at least two, becomes two and is provided with, and the quantity that described second conducting strip is provided with is identical with the quantity that described first conducting strip is provided with.
9. as each described a kind of power-off protection apparatus in the claim 1 to 5, it is characterized in that: described first substrate and second substrate all adopt the ceramic material manufacturing.
10. lighting device, comprise that one is used for the housing unit of ccontaining illuminated component, it is characterized in that: described housing unit comprises upper casing and lower casing, be installed with a power-off protection apparatus that comprises first substrate and second substrate on the described lower casing, be installed with pull bar on described first substrate, described second substrate is movably set in described pull bar, is provided with first elastic component between described first substrate and second substrate; Be installed with first conducting strip with described second substrate side in opposite directions on described first substrate, be installed with second conducting strip with described first substrate side in opposite directions on described second substrate, be installed with a briquetting that can compress or unclamp first substrate on the described upper casing, make described first conducting strip contact or separate with second conducting strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215817.2A CN101901704B (en) | 2010-06-30 | 2010-06-30 | Power-off protector and lighting device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215817.2A CN101901704B (en) | 2010-06-30 | 2010-06-30 | Power-off protector and lighting device using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101901704A true CN101901704A (en) | 2010-12-01 |
| CN101901704B CN101901704B (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010215817.2A Expired - Fee Related CN101901704B (en) | 2010-06-30 | 2010-06-30 | Power-off protector and lighting device using same |
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| Country | Link |
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| CN (1) | CN101901704B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820147A (en) * | 2011-06-09 | 2012-12-12 | 海洋王照明科技股份有限公司 | Uncovering power-off protection structure and illuminating device |
| CN103311061A (en) * | 2012-03-08 | 2013-09-18 | 海洋王照明科技股份有限公司 | Power off protection device |
| CN109557492A (en) * | 2018-12-26 | 2019-04-02 | 申通庞巴迪(上海)轨道交通车辆维修有限公司 | A kind of train voltage and current sensor detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB579177A (en) * | 1943-10-18 | 1946-07-25 | Gen Electric Co Ltd | Improvements in lightning arresters |
| US5369237A (en) * | 1992-01-28 | 1994-11-29 | Marquardt Gmbh | Electrical switch |
| CN2452117Y (en) * | 2000-11-16 | 2001-10-03 | 新进工业股份有限公司 | Pressing switch |
| CN1858486A (en) * | 2006-02-27 | 2006-11-08 | 仇星火 | Safety miner's lamp head |
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2010
- 2010-06-30 CN CN201010215817.2A patent/CN101901704B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB579177A (en) * | 1943-10-18 | 1946-07-25 | Gen Electric Co Ltd | Improvements in lightning arresters |
| US5369237A (en) * | 1992-01-28 | 1994-11-29 | Marquardt Gmbh | Electrical switch |
| CN2452117Y (en) * | 2000-11-16 | 2001-10-03 | 新进工业股份有限公司 | Pressing switch |
| CN1858486A (en) * | 2006-02-27 | 2006-11-08 | 仇星火 | Safety miner's lamp head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820147A (en) * | 2011-06-09 | 2012-12-12 | 海洋王照明科技股份有限公司 | Uncovering power-off protection structure and illuminating device |
| CN103311061A (en) * | 2012-03-08 | 2013-09-18 | 海洋王照明科技股份有限公司 | Power off protection device |
| CN103311061B (en) * | 2012-03-08 | 2016-01-13 | 海洋王照明科技股份有限公司 | Power-off protection apparatus |
| CN109557492A (en) * | 2018-12-26 | 2019-04-02 | 申通庞巴迪(上海)轨道交通车辆维修有限公司 | A kind of train voltage and current sensor detector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101901704B (en) | 2014-02-26 |
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