CN204465988U - A kind of LED driver - Google Patents
A kind of LED driver Download PDFInfo
- Publication number
- CN204465988U CN204465988U CN201520167767.3U CN201520167767U CN204465988U CN 204465988 U CN204465988 U CN 204465988U CN 201520167767 U CN201520167767 U CN 201520167767U CN 204465988 U CN204465988 U CN 204465988U
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- China
- Prior art keywords
- conductive chassis
- led driver
- conducting connecting
- overvoltage crowbar
- connecting bar
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The application provides a kind of LED driver, and by conducting connecting bar through through wires hole, and one end is positioned at conductive chassis is connected with the earth terminal of overvoltage crowbar, and the other end is positioned at conductive chassis and is electrically connected by detachable conducting connecting part and conductive chassis outward; Insulation inclusion enclave is arranged between conducting connecting bar and conductive chassis, conducting connecting bar and conductive chassis is insulated fixing; The earth terminal of overvoltage crowbar and the earth terminal of drive circuit are not electrically connected in conductive chassis inside.When LED driver is when carrying out voltage-withstand test; the connection of detachable conducting connecting part and conductive chassis can be disconnected from conductive chassis outside; namely the earth terminal of overvoltage crowbar and the connection on ground is disconnected; without the need to taking the step of conductive chassis in prior art apart; the voltage-withstand test of drive circuit in LED driver can be realized, solve the problem of voltage-withstand test complex steps in prior art.
Description
Technical field
The utility model relates to LED Driving technique field, particularly relates to a kind of LED driver.
Background technology
In order to ensure that electric equipment is not damaged in surge situation, usually the input of electric equipment is provided with excess voltage protection, such as in order to be not struck by lightning damage and the lightning protection circuit designed; Also comprise described excess voltage protection in LED driver, in order to ensure the protected effect of described overvoltage crowbar, the withstand voltage of described overvoltage crowbar is arranged can not be too large.
And described LED driver; usually need to pass through voltage-withstand test before dispatching from the factory; when preventing voltage-withstand test described overvoltage crowbar work cause leakage current excessive cause voltage-withstand test not by, the withstand voltage of described overvoltage crowbar arranges the magnitude of voltage that need be greater than voltage-withstand test.Therefore in order to not be subject to the impact of described overvoltage crowbar when ensureing voltage-withstand test; often choose withstand voltage larger overvoltage crowbar; this not only can cause cost to increase; and affect Anti-surging effect; such as in order to ensure that voltage-withstand test can pass through; the withstand voltage of described overvoltage crowbar is 3000V, if now surge voltage is only 2900V, then described overvoltage crowbar does not play a protective role to described surge.
In order to ensure the protected effect not affecting again described overvoltage crowbar while voltage-withstand test can pass through, usually at present when voltage-withstand test, described overvoltage crowbar and ground to be disconnected, the main circuit of described LED driver to be tested; But; the earth terminal of overvoltage crowbar described in prior art is all the conductive chassis inside being connected to described LED driver; described conductive chassis is connected to ground; want to disconnect the connection between described overvoltage crowbar and ground; need to take described conductive chassis apart could realize, this will make testing procedure loaded down with trivial details, and increases testing cost; especially carry out the driver of encapsulating process, and likely damage other devices.
Utility model content
In view of this, the utility model provides a kind of LED driver, to solve the problem of voltage-withstand test complex steps in prior art.
To achieve these goals, the technical scheme that provides of the utility model embodiment is as follows:
A kind of LED driver, comprising: conducting connecting bar, detachable conducting connecting part, the inclusion enclave that insulate, the conductive chassis being provided with through wires hole and the drive circuit be arranged in described conductive chassis; Described drive circuit comprises overvoltage crowbar; Wherein:
Described conductive chassis ground connection;
Described conducting connecting bar is through described through wires hole, and one end is positioned at described conductive chassis is connected with the earth terminal of described overvoltage crowbar, and the other end is positioned at described conductive chassis and is electrically connected by described detachable conducting connecting part and described conductive chassis outward; Described insulation inclusion enclave is arranged between described conducting connecting bar and described conductive chassis, described conducting connecting bar and described conductive chassis is insulated fixing;
The earth terminal of described overvoltage crowbar and the earth terminal of described drive circuit are not electrically connected in described conductive chassis inside.
Preferably, described conducting connecting bar is metal screw.
Preferably, one end that described metal screw is positioned at described conductive chassis is provided with external screw thread;
Described LED driver also comprises:
Be arranged at the conducting terminal that described conductive chassis is interior, snare is connected on described metal screw, with the earth terminal of described overvoltage crowbar;
Be arranged in described conductive chassis, match with described external screw thread, the first nut that described conducting terminal and described metal screw are connected and fixed.
Preferably, also comprise: snare on described metal screw, be arranged at insulating washer between described insulation inclusion enclave and described conducting terminal.
Preferably, described conducting connecting bar is positioned at one end hollow of described conductive chassis;
Described LED driver also comprises: conducting terminal; Described conducting terminal is arranged in described conductive chassis; one end of described conducting terminal is connected with the earth terminal of described overvoltage crowbar, is riveted together and realizes electrical connection in one end that the other end of described conducting terminal is nested in described conducting connecting bar hollow by external force.
Preferably, one end that described metal screw is positioned at outside described conductive chassis is provided with external screw thread;
Described detachable conducting connecting part is the metal clips of snare on described metal screw;
Described LED driver also comprises: the second nut matched with described external screw thread; Described metal clips is realized and the electrical connection of described metal screw and described conductive chassis and fixing by described second nut.
Preferably, described metal screw is positioned at one end hollow outside described conductive chassis, and is provided with internal thread;
Described detachable conducting connecting part is the metal screws matched with described internal thread.
Preferably, also comprise: be arranged at the sealing ring between described metal screws and described metal screw.
Preferably, described insulation inclusion enclave comprises:
Plastic nut;
Wrap up described conducting connecting bar, with the externally threaded plastic fastening matched with described plastic nut.
Preferably, described conductive chassis is cuboid, and described through wires hole is arranged on the end cap of described conductive chassis.
Preferably, described overvoltage crowbar is common mode lightning protection circuit.
The application provides a kind of LED driver, by conducting connecting bar through through wires hole, and one end is positioned at conductive chassis is connected with the earth terminal of overvoltage crowbar, the other end is positioned at that described conductive chassis is outer to be electrically connected by detachable conducting connecting part and described conductive chassis; Described insulation inclusion enclave is arranged between described conducting connecting bar and described conductive chassis, described conducting connecting bar and described conductive chassis is insulated fixing; The earth terminal of described overvoltage crowbar and the earth terminal of described drive circuit are not electrically connected in described conductive chassis inside.When described LED driver is when carrying out voltage-withstand test; the connection of described detachable conducting connecting part and described conductive chassis can be disconnected from described conductive chassis outside; also the earth terminal of described overvoltage crowbar and the connection on ground is namely disconnected; without the need to taking the step of conductive chassis in prior art apart; the voltage-withstand test of drive circuit in described LED driver can be realized, solve the problem of voltage-withstand test complex steps in prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of LED driver schematic diagram that Fig. 1 provides for the embodiment of the present application;
A kind of LED driver schematic diagram that Fig. 2 provides for another embodiment of the application;
A kind of LED driver schematic diagram that Fig. 3 provides for another embodiment of the application;
A kind of LED driver schematic diagram that Fig. 4 provides for another embodiment of the application;
A kind of LED driver schematic diagram that Fig. 5 provides for another embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of LED driver, to solve the problem of voltage-withstand test complex steps in prior art.
Concrete, as shown in Figure 1, described LED driver comprises:
Conducting connecting bar 101, detachable conducting connecting part 102, insulation inclusion enclave 103, the conductive chassis being provided with through wires hole and the drive circuit be arranged in described conductive chassis; Described drive circuit comprises overvoltage crowbar; Wherein:
Described conductive chassis ground connection;
Conducting connecting bar 101 is through described through wires hole, and one end is positioned at described conductive chassis is connected with the earth terminal of described overvoltage crowbar, and the other end is positioned at described conductive chassis and is electrically connected by detachable conducting connecting part 102 and described conductive chassis outward; Insulation inclusion enclave 103 is arranged between conducting connecting bar 101 and described conductive chassis, conducting connecting bar 101 and described conductive chassis is insulated fixing;
The earth terminal of described overvoltage crowbar and the earth terminal of described drive circuit are not electrically connected in described conductive chassis inside.
It should be noted that; the earth terminal of described drive circuit connects described conductive chassis; and the earth terminal of the earth terminal of described overvoltage crowbar and described drive circuit is not electrically connected, mean that the earth terminal of described overvoltage crowbar is not connected with described conductive chassis in described conductive chassis inside.
In Fig. 1 104 represents a part for described conductive chassis, is provided with described through wires hole.
Concrete operation principle is:
Conducting connecting bar 101 is arranged in described through wires hole, and one end is positioned at described conductive chassis is connected with the earth terminal of described overvoltage crowbar, the other end is positioned at that described conductive chassis is outer to be electrically connected with described conductive chassis by detachable conducting connecting part 102; The earth terminal of described overvoltage crowbar and the earth terminal of described drive circuit are not electrically connected in described conductive chassis inside, but are connected to ground through described through wires hole by detachable conducting connecting part 102 by conducting connecting bar 101.
When voltage-withstand test, detachable conducting connecting part 102 and described conductive chassis, the separated state of conducting connecting bar 101, then the earth terminal of described overvoltage crowbar is not connected with described conductive chassis, namely described overvoltage crowbar does not connect does not affect voltage-withstand test in circuit, and the withstand voltage preset value of described overvoltage crowbar can according to designing the magnitude of voltage needing set without the need to considering voltage-withstand test; After voltage-withstand test completes; detachable conducting connecting part 102 and described conductive chassis, conducting connecting bar 101 are in connection status; then under lightning test or the limit high-pressure situations occurred after coming into operation, described overvoltage crowbar normally works the effect played and protect described LED driver.
The described LED driver that the present embodiment provides; when described LED driver is when carrying out voltage-withstand test; the connection of detachable conducting connecting part 102 and described conductive chassis can be disconnected from described conductive chassis outside; also the earth terminal of described overvoltage crowbar and the connection on ground is namely disconnected; without the need to taking the step of described conductive chassis in prior art apart; the voltage-withstand test of drive circuit in described LED driver can be realized, solve the problem of voltage-withstand test complex steps in prior art.
Preferably, described conducting connecting bar is metal screw.
It should be noted that, metal screw refers to and described conducting connecting bar is threaded, and the earth terminal of described overvoltage crowbar can by realizing being electrically connected and locking with the electric conductor and described conducting connecting bar that mate screw thread; Described detachable connecting part realizes being electrically connected and locking by coupling screw thread and described conducting connecting bar.
Preferably, as shown in Figure 2, one end that metal screw 101 is positioned at described conductive chassis is provided with external screw thread.
Described LED driver also comprises:
Be arranged at the conducting terminal 105 that described conductive chassis is interior, snare is connected on metal screw 101, with the earth terminal of described overvoltage crowbar;
Be arranged in described conductive chassis, match with described external screw thread, the first nut 106 that conducting terminal 105 and metal screw 101 are connected and fixed.
In Fig. 2 104 represents a part for described conductive chassis, is provided with described through wires hole.
One end that metal screw 101 is positioned at described conductive chassis is provided with external screw thread, can for the earth terminal of described overvoltage crowbar by with coupling screw thread electric conductor and be electrically connected with its realization.
Conducting terminal 105 can be provided with through hole, make conducting terminal 105 snare on metal screw 101, be electrically connected with its realization.
Conducting terminal 105 snare easily slides or comes off on metal screw 101, and the first nut 106 can make the position of conducting terminal 105 on metal screw 101 maintain static.First nut 106 and metal screw 101 are positioned at the external screw thread that one end of described conductive chassis is arranged and match.
Preferably, as shown in Figure 2, described LED driver also comprises: snare on metal screw 101, be arranged at insulation inclusion enclave 103 and conducting terminal 105 between insulating washer 107.
Insulating washer 107 is arranged between insulation inclusion enclave 103 and conducting terminal 105, can strengthen the insulation distance of conducting terminal 105 and described conductive chassis, and is fixed with booster action to conducting terminal 105 position.
Preferably, as shown in Figure 3, conducting connecting bar 101 is positioned at one end hollow of described conductive chassis;
Described LED driver also comprises: conducting terminal 105; Conducting terminal 105 is arranged in described conductive chassis; one end of conducting terminal 105 is connected with the earth terminal of described overvoltage crowbar, is riveted together and realizes electrical connection in one end that the other end of conducting terminal 105 is nested in conducting connecting bar 101 hollow by external force.
One end that conducting connecting bar 101 is positioned at described conductive chassis can adopt any one form shown in Fig. 2 or Fig. 3; but the application is not limited thereto two kinds of ways of realization; as long as the mode that conducting connecting bar 101 is connected with the earth terminal of described overvoltage crowbar can be realized, all in the protection range of the application.
Preferably, as shown in Figure 2, one end that metal screw 101 is positioned at outside described conductive chassis is provided with external screw thread;
Detachable conducting connecting part 102 is the metal clips of snare on metal screw 101;
Described LED driver also comprises: the second nut 108 matched with described external screw thread; Described metal clips passes through the electrical connection of the second nut 108 realization and metal screw 101 and described conductive chassis and fixes.Second nut 108 and metal screw 101 are positioned at the external screw thread that the one end outside described conductive chassis is arranged and match.
Described metal clips snare is on metal screw 101; Rotate the second nut 108 and make described metal clips and described conductive chassis close contact, thus form electrical connection between metal screw 101 and described conductive chassis.
Preferably, as shown in Figure 4, metal screw 101 is positioned at one end hollow outside described conductive chassis, and is provided with internal thread;
Detachable conducting connecting part 102 is the metal screws matched with described internal thread.
In Fig. 4 104 is a part for described conductive chassis, is provided with described through wires hole.Conducting terminal 105 is a kind of implementation that metal screw 101 is connected with described overvoltage crowbar earth terminal with the first nut 106, might not be defined in this.
Rotating described metal screws makes its metal edges along contacting with described conductive chassis, thus forms electrical connection between metal screw 101 and described conductive chassis.
Preferably, as shown in Figure 4, described LED driver also comprises: be arranged at the sealing ring 109 between described metal screws and metal screw 101.
Sealing ring 109 makes metal screw 101 hollow and arranges female one end not easily to intake and get rusty, and makes the connection between described metal screws and metal screw 101 more tight in addition, not easily loosens.
Preferably, as shown in Figure 4, described insulation inclusion enclave comprises:
Plastic nut 1031;
Wrap up conducting connecting bar 101, with the externally threaded plastic fastening 1032 matched with plastic nut 1031.
By the described insulation inclusion enclave that the plastic fastening 1032 of plastic nut 1031 and hollow is formed, then with the nested designs of conducting connecting bar 101, achieve conducting connecting bar 101 both through described conductive chassis, insulate with described conductive chassis again and fix.
Preferably, as shown in Figure 5, conductive chassis 200 is cuboid, and through wires hole 201 is arranged on the end cap of described conductive chassis 200.
As shown in Figure 5, the end cap of conductive chassis 200 has two sides, and the present embodiment for right side one side, but might not be defined in this.
In concrete application, conductive chassis 200 can also be provided with wire hole 202 and ground hole 203 as shown in Figure 5.As shown in Figure 5, conductive chassis 200 there are three holes, are from left to right followed successively by through wires hole 201, wire hole 202, and ground hole 203.The input line of described LED driver is convenient in the setting of wire hole 202 and output line is drawn outside conductive chassis 200, and the setting of ground hole 203 is used for the earth terminal of fixing described LED driver.
Preferably, described overvoltage crowbar is common mode lightning protection circuit.
Described LED driver disclosed in the present embodiment, when described LED driver is when carrying out voltage-withstand test, the connection of detachable conducting connecting part 102 and described conductive chassis can be disconnected from described conductive chassis outside, also the earth terminal of described overvoltage crowbar and the connection on ground is namely disconnected, ensure that the impact not by described overvoltage crowbar in voltage-withstand test process, make in described overvoltage crowbar that choosing of device can be freer, such as only need consider thunderbolt factor when overvoltage crowbar is common mode lightning protection circuit, without the need to comprehensive consideration thunderbolt and voltage-withstand test.In sum, the selectivity that described LED driver disclosed in the present embodiment utilizes structural detachable design to achieve overvoltage crowbar earth terminal connects, easy to operate.
In concrete application, described conductive chassis can be aluminium shell.
In concrete practical application, described conducting connecting bar and described conductive chassis can be the material of conduction arbitrarily, might not be defined in aluminium shell, can depending on its concrete applied environment.
In the utility model, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Below be only preferred implementation of the present utility model, those skilled in the art understood or realizes the utility model.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a LED driver, is characterized in that, comprising: conducting connecting bar, detachable conducting connecting part, the inclusion enclave that insulate, the conductive chassis being provided with through wires hole and the drive circuit be arranged in described conductive chassis; Described drive circuit comprises overvoltage crowbar; Wherein:
Described conductive chassis ground connection;
Described conducting connecting bar is through described through wires hole, and one end is positioned at described conductive chassis is connected with the earth terminal of described overvoltage crowbar, and the other end is positioned at described conductive chassis and is electrically connected by described detachable conducting connecting part and described conductive chassis outward; Described insulation inclusion enclave is arranged between described conducting connecting bar and described conductive chassis, described conducting connecting bar and described conductive chassis is insulated fixing;
The earth terminal of described overvoltage crowbar and the earth terminal of described drive circuit are not electrically connected in described conductive chassis inside.
2. LED driver according to claim 1, is characterized in that, described conducting connecting bar is metal screw.
3. LED driver according to claim 2, is characterized in that, one end that described metal screw is positioned at described conductive chassis is provided with external screw thread;
Described LED driver also comprises:
Be arranged at the conducting terminal that described conductive chassis is interior, snare is connected on described metal screw, with the earth terminal of described overvoltage crowbar;
Be arranged in described conductive chassis, match with described external screw thread, the first nut that described conducting terminal and described metal screw are connected and fixed.
4. LED driver according to claim 3, is characterized in that, also comprises: snare on described metal screw, be arranged at insulating washer between described insulation inclusion enclave and described conducting terminal.
5. LED driver according to claim 1, is characterized in that, described conducting connecting bar is positioned at one end hollow of described conductive chassis;
Described LED driver also comprises: conducting terminal; Described conducting terminal is arranged in described conductive chassis; one end of described conducting terminal is connected with the earth terminal of described overvoltage crowbar, is riveted together and realizes electrical connection in one end that the other end of described conducting terminal is nested in described conducting connecting bar hollow by external force.
6. LED driver according to claim 2, is characterized in that, described metal screw is positioned on the one end outside described conductive chassis and is provided with external screw thread;
Described detachable conducting connecting part is the metal clips of snare on described metal screw;
Described LED driver also comprises: the second nut matched with described external screw thread; Described metal clips is realized and the electrical connection of described metal screw and described conductive chassis and fixing by described second nut.
7. LED driver according to claim 2, is characterized in that, described metal screw is positioned at one end hollow outside described conductive chassis, and is provided with internal thread;
Described detachable conducting connecting part is the metal screws matched with described internal thread.
8. LED driver according to claim 7, is characterized in that, also comprises: be arranged at the sealing ring between described metal screws and described metal screw.
9. LED driver as claimed in any of claims 1 to 8, is characterized in that, described insulation inclusion enclave comprises:
Plastic nut;
Wrap up described conducting connecting bar, with the externally threaded plastic fastening matched with described plastic nut.
10. LED driver according to claim 1, is characterized in that, described conductive chassis is cuboid, and described through wires hole is arranged on the end cap of described conductive chassis.
11. LED drivers according to claim 1, is characterized in that, described overvoltage crowbar is common mode lightning protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167767.3U CN204465988U (en) | 2015-03-24 | 2015-03-24 | A kind of LED driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167767.3U CN204465988U (en) | 2015-03-24 | 2015-03-24 | A kind of LED driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204465988U true CN204465988U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520167767.3U Active CN204465988U (en) | 2015-03-24 | 2015-03-24 | A kind of LED driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204465988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182011A (en) * | 2015-07-20 | 2015-12-23 | 柏宜照明（上海）股份有限公司 | Dielectric voltage withstand test-used grounding wire device of street lamp power source with built-in lightning protection device |
| CN110556809A (en) * | 2019-09-09 | 2019-12-10 | 贵州天义电器有限责任公司 | lightning protection assembly based on primary power distribution device of airplane |
-
2015
- 2015-03-24 CN CN201520167767.3U patent/CN204465988U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182011A (en) * | 2015-07-20 | 2015-12-23 | 柏宜照明（上海）股份有限公司 | Dielectric voltage withstand test-used grounding wire device of street lamp power source with built-in lightning protection device |
| CN110556809A (en) * | 2019-09-09 | 2019-12-10 | 贵州天义电器有限责任公司 | lightning protection assembly based on primary power distribution device of airplane |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |