CN101451660A - Luminous module - Google Patents
Luminous module Download PDFInfo
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- CN101451660A CN101451660A CNA200710194089XA CN200710194089A CN101451660A CN 101451660 A CN101451660 A CN 101451660A CN A200710194089X A CNA200710194089X A CN A200710194089XA CN 200710194089 A CN200710194089 A CN 200710194089A CN 101451660 A CN101451660 A CN 101451660A
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- light emitting
- emitting module
- circuit board
- electrode cable
- pin
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Abstract
The invention relates to a lighting module, comprising a back panel, at least a fluorescent tube, a circuit board and a voltage transformation unit; the fluorescent tube is arranged at a surface of the back panel and is provided with an electrode cable; the circuit board is arranged at another surface of the back panel; the voltage transformation unit is positioned at the circuit board and is provided with at least a pin which is directly connected with the electrode cable.
Description
Technical field
The present invention relates to a kind of light emitting module, particularly about a kind of light emitting module with voltage transformation unit.
Background technology
Along with the arriving of digital Age, the various kinds flat display apparatus is also grown up fast, and in these flat display apparatus, light emitting module is played the part of indispensable role, for example in liquid crystal indicator, by a light emitting module as a backlight module so that light source to be provided.Certainly, light emitting module also can be applicable to various lighting apparatus or outdoor display board except can be used as the usefulness of backlight module.
Below be example with the direct type backlight module of liquid crystal indicator in the prior art, existing light emitting module is described.As shown in Figure 1, light emitting module 1 comprises a backboard 11, a plurality of fluorescent lamp 12, one drive circuit plate 13 and a diffuser plate 14.Fluorescent lamp 12 and drive circuit board 13 are arranged at two sides of backboard 11 respectively, and diffuser plate 14 is adjacent to fluorescent lamp 12.
Drive circuit board 13 has a plurality of transformer T (as shown in phantom in FIG.), each transformer T all electrically connects with a splicing ear 17, and two ends of fluorescent lamp 12 are provided with many high pressure flexible cords 15, and the electrode cable (not shown) welding of itself and fluorescent lamp 12 also is connected on a connector 16.Then, electrically connect by the splicing ear on connector 16 and the drive circuit board 13 17, the high pressure signal that transformer T is exported just can be sent to fluorescent lamp 12, and then makes fluorescent lamp 12 luminous.
Yet concerning light emitting module 1, each fluorescent lamp 12 all need dispose a connector 16 and high pressure flexible cord 15, and also need dispose corresponding splicing ear 17 on drive circuit board 13.Thus, not only increase material cost, also can increase the workload of material keyholed back plate.
Therefore, how to provide a kind of light emitting module that need not use high pressure flexible cord and connector, and then reduce cost and simplify material keyholed back plate, one of current just important topic.
Summary of the invention
Because above-mentioned problem the objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of light emitting module that need not use high pressure flexible cord and connector is proposed.
For reaching above-mentioned purpose, the invention provides a kind of light emitting module, comprise a backboard, at least one fluorescent lamp, a circuit board and a voltage transformation unit.Fluorescent lamp is arranged at a surface of backboard and has an electrode cable.Circuit board is arranged at another surface of backboard.Voltage transformation unit is arranged at circuit board and has at least one pin, and electrode cable directly is connected with pin.
The present invention has following useful technique effect: a kind of light emitting module of the present invention, the electrode cable of its fluorescent lamp directly is connected with the pin of voltage transformation unit, makes that fluorescent lamp can be luminous according to the high pressure signal of voltage transformation unit.Compare with prior art, the present invention need not use expensive high pressure flexible cord and connector, does not also need splicing ear is set on drive circuit board, so the present invention can significantly reduce material cost and simplify the material keyholed back plate.
Description of drawings
Fig. 1 is an a kind of schematic diagram of existing light emitting module;
Fig. 2 is the schematic diagram according to a kind of light emitting module of preferred embodiment of the present invention;
Fig. 3 is the part sectioned view according to a kind of light emitting module of preferred embodiment of the present invention;
Fig. 4 and Fig. 5 are according to the partial bottom view of a kind of light emitting module of preferred embodiment of the present invention;
Fig. 6 is the schematic diagrames that have different variation aspects according to the pin of the voltage transformation unit of a kind of light emitting module of preferred embodiment of the present invention.
Symbol description among the figure
1,2 light emitting modules
11,21 backboards
12,22 fluorescent lamps
13 drive circuit boards
14,26 diffuser plates
15 high pressure flexible cords
16 connectors
17 splicing ears
211 first openings
221,221 ' electrode cable
222,223 kinks
23 circuit boards
231,231 ' the second openings
24 isolating pad
241 the 3rd openings
25 fixtures
27 optical diaphragm group
28 frameworks
29 voltage transformation unit
291,291 ', 293 pins
292,292 ' connecting portion
The H spacing
The T transformer
The specific embodiment
Hereinafter with reference to relevant drawings, a kind of light emitting module according to preferred embodiment of the present invention is described.
As shown in Figure 2, a kind of light emitting module 2 of preferred embodiment of the present invention comprises a backboard 21, at least one fluorescent lamp 22 and a circuit board 23.Wherein, light emitting module 2 is an example with the bottom-lighting type back light module in the liquid crystal indicator, but not as limit.Light emitting module 2 also can be the light source module of a side light type back light module, a lighting device, an outdoor advertising billboard or the light source module of other electronic installation.
Two ends of fluorescent lamp 22 respectively are provided with an electrode cable 221, each electrode cable 221 and each first opening, 211 corresponding setting.Fluorescent lamp 22 can be a cold cathode fluorescent lamp pipe or a hot-cathode fluorescent light tube, in the present embodiment, do not limit the shape and the kind of fluorescent lamp 22, for example the shape of fluorescent lamp 22 can be linear pattern, U type, C type, S type or W type, first opening 211 can be a perforation or a breach, and fluorescent lamp 22 is an example with the linear pattern among Fig. 2, and first opening 211 is an example with a perforation.
The circuit board 23 of present embodiment is the one drive circuit plate, and is luminous in order to drive control fluorescent lamp 22, and circuit board 23 is arranged at another surface of backboard 21.
A plurality of voltage transformation unit 29 (as shown in phantom in FIG.) are arranged on the surface of circuit board 23 back to backboard 21, give fluorescent lamp 22 so that the high pressure signal to be provided.The voltage transformation unit 29 of present embodiment can be a transformer, does not limit size, shape and kind of voltage transformation unit 29 or the like in this.
In addition, light emitting module 2 can more comprise a plurality of isolating pad 24 (lamp rubber), two fixtures 25 (lamp holder), a diffuser plate 26, an optical diaphragm group 27 and a framework 28.Wherein, two ends that isolating pad 24 can ccontaining fluorescent lamp 22 and electrode cable 221 are to provide the effect of guard lamp pipe electrode and insulation.Fixture 25 can be pushed down isolating pad 24, in order to fixing isolating pad 24 on backboard 21.Diffuser plate 26 is arranged at the light that is sent with diffusion fluorescent lamp 22 on the fixture 25.Optical diaphragm group 27 is arranged on the diffuser plate 26 with convection light and promotes positive briliancy, and wherein, optical diaphragm group 27 can comprise diffusion barrier sheet on diffusion barrier sheet, the prism diaphragm and.Framework 28 fastens mutually with fixture 25, in order to the effect of strengthening fixing.
Fig. 3 is the part sectioned view after the light emitting module 2 of Fig. 2 makes up.As shown in Figure 3, an end of fluorescent lamp 22 is installed in the isolating pad 24.The electrode cable 221 of fluorescent lamp 22 forms a kink 222 being adjacent to fluorescent lamp 22 places, with one the 3rd opening 241 that wears isolating pad 24, first opening 211 of backboard 21 and one second opening 231 of circuit board 23, and form another kink 223 directly to be connected being adjacent to circuit board 23 places, for example can connect, welding, welding, riveted joint, crimping or laser welding modes such as (laser welding) by scolding tin with the pin 291 of the secondary side (high-tension coil) of voltage transformation unit 29.Certainly, if the size of circuit board 23 is less, then circuit board 23 need not be provided with second opening 231, and electrode cable 221 can be along the periphery of circuit board 23 and directly be connected with pin 291.In addition, if light emitting module 2 does not use isolating pad 24, then electrode cable 221 also need not wear the 3rd opening 241 of isolating pad 24.
In the present embodiment, the pin 291 of voltage transformation unit 29 stretches out from the body of voltage transformation unit 29, and the direction to parallel backboard 21 is extended, electrode cable 221 can be unsettled with the junction of pin 291 or cooperates electrode cable 221 surfaces to be coated with insulator, then can be provided with along the surface of circuit board 23.In addition, it should be noted that and for example extend the pin 291 of voltage transformation unit 29 ' also can extend in (shown in the dotted line of Fig. 3) perpendicular to backboard 21 to direction away from backboard 21, the electrode cable 221 of fluorescent lamp 22 ' also increase with pin 291 ' welding.So can increase electrode cable 221 ' with the spacing H of backboard 21, and then reduce signal and disturb.In the prior art, often add the spacing of large circuit board 23 and backboard 21, yet this can cause overall dimensions to become big for the spacing that increases electrode cable 221 and backboard 21.Review present embodiment, just can increase spacing H not needing to change under the situation of overall dimensions, and then reduce signal and disturb.
In addition, in the present embodiment, a pin 293 of the primary side of voltage transformation unit 29 (low-voltage coil) can plug (DIP) and electrically connect in circuit board 23 and with a circuit layer (not shown).Circuit layer is positioned at the side of circuit board 23 towards backboard 21.So, the circuit board 23 of present embodiment can be a single layer board, compares with the employed double-layer circuit board of prior art, only needs in the present embodiment to use single layer board so more can reduce material cost.
Fig. 4 is the partial bottom view after the light emitting module 2 of Fig. 2 makes up.As shown in Figure 4, second opening 231 of circuit board 23 is the perforation of a circle, wears for electrode cable 221.In addition, Fig. 5 show second opening 231 of present embodiment ' another change aspect, in this, the opening 231 of circuit board 23 ' be a breach that splits from the edge.
In addition, Fig. 6 shows the variation aspect of the pin 291 of present embodiment.As shown in Figure 6, pin 291 extends out to outside the circuit board 23 from the body of voltage transformation unit 29, and have endways a junction 292,292 '.In this, pin 291 is provided with along circuit board 23 surfaces.Connecting portion 292, the 292 ' welding of electrode cable 221 and pin 291.Wherein, connecting portion 292,292 ' can be forked or ring-type, and shape is as limit, connecting portion 292,292 ' can strengthen strength of connection and convenient the binding.In addition, electrode cable 221 is the L type.
In sum, according to a kind of light emitting module of the present invention, the electrode cable of its fluorescent lamp directly is connected with the pin of voltage transformation unit, makes that fluorescent lamp can be luminous according to the high pressure signal of voltage transformation unit.Compare with prior art, the present invention need not use expensive high pressure flexible cord and connector, does not also need splicing ear is set on drive circuit board, so the present invention can significantly reduce material cost and simplify the material keyholed back plate.
The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the scope of claims its equivalent modifications of carrying out or change.
Claims (12)
1. a light emitting module is characterized in that, comprises:
One backboard;
At least one fluorescent lamp is arranged at a surface of this backboard and has an electrode cable;
One circuit board is arranged at another surface of this backboard; And
One voltage transformation unit is arranged at this circuit board, and has at least one pin, and this electrode cable directly is connected with this pin.
2. light emitting module as claimed in claim 1, wherein, this backboard has more one first opening, and this electrode cable passes this first opening.
3. light emitting module as claimed in claim 2, wherein, this first opening is a perforation or a breach.
4. light emitting module as claimed in claim 1, wherein, this circuit board has at least one second opening, and this electrode cable passes this second opening and is connected with this pin.
5. light emitting module as claimed in claim 4, wherein, this second opening is a perforation or a breach.
6. light emitting module as claimed in claim 1, wherein, this pin stretches out from a body of this voltage transformation unit.
7. light emitting module as claimed in claim 1, wherein, this pin has a junction, and this electrode cable is connected with this connecting portion.
8. light emitting module as claimed in claim 7, wherein, this connecting portion is for being forked or ring-type.
9. light emitting module as claimed in claim 1, wherein, the junction of this electrode cable and this pin is a hanging shape.
10. light emitting module as claimed in claim 1, wherein, this voltage transformation unit is a transformer.
11. light emitting module as claimed in claim 1, wherein, this electrode cable has one first kink, and this first kink is adjacent to this fluorescent lamp.
12. light emitting module as claimed in claim 11, wherein, this electrode cable has more one second kink, and this second kink is adjacent to this circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710194089XA CN101451660A (en) | 2007-11-30 | 2007-11-30 | Luminous module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710194089XA CN101451660A (en) | 2007-11-30 | 2007-11-30 | Luminous module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451660A true CN101451660A (en) | 2009-06-10 |
Family
ID=40734063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710194089XA Pending CN101451660A (en) | 2007-11-30 | 2007-11-30 | Luminous module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136586A (en) * | 2019-05-27 | 2019-08-16 | Oppo广东移动通信有限公司 | Backlight assembly, display module and electronic equipment |
-
2007
- 2007-11-30 CN CNA200710194089XA patent/CN101451660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136586A (en) * | 2019-05-27 | 2019-08-16 | Oppo广东移动通信有限公司 | Backlight assembly, display module and electronic equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090610 |