CN203671408U - Internal combustion locomotive power room LED (light-emitting diode) lamp - Google Patents
Internal combustion locomotive power room LED (light-emitting diode) lamp Download PDFInfo
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- CN203671408U CN203671408U CN201420057407.3U CN201420057407U CN203671408U CN 203671408 U CN203671408 U CN 203671408U CN 201420057407 U CN201420057407 U CN 201420057407U CN 203671408 U CN203671408 U CN 203671408U
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- pipe
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Abstract
An internal combustion locomotive power room LED (light-emitting diode) lamp comprises a direct-current driving module, a substrate and bulbs. The bulbs are uniformly distributed on the substrate, the direct-current driving module and the substrate are fixed into a sealed lamp shell, the bulbs face a diffuse reflection transparent lampshade, each bulb comprises an LED chip, an epoxy resin package and two pins, a positive electrode of each LED chip is connected with one pin through a gold wire, a negative electrode of each LED chip is connected with another pin through a gold wire, the epoxy resin package comprises a low-density epoxy resin circular tube and a transparent epoxy resin circular plate, the circular plate covers the top end of the circular tube, the LED chips are fixed into the circular tube, each pin comprises parallel metal sheets, gold wire connection ends of the metal sheets are fixed together, solder joint connection ends of the metal sheets are fixed together, the metal sheets on two sides are bent outwards, the pins penetrate the circular tube, the gold wire connection ends are positioned inside a cavity of the circular tube, and the solder joint connection ends are positioned outside the cavity of the circular tube. Heat can be effectively dissipated, and stable working time of the lamp is prolonged.
Description
Technical field
The utility model relates to a kind of lighting device, particularly relates to a kind of lighting for high temperature Flammable atmosphere.
Background technology
The diesel locomotive powerhouse of railway locomotive is locomotive heart, and powerful Diesel engine is installed.In the time of train high-speed cruising, the working environment of powerhouse is very severe, and main manifestations is for vibrations are large, temperature is high, gas concentration is high, because diesel locomotive continuous operating time is long, higher to the quality requirement of lighting for security consideration.Mechanical connection intensity reliably be should guarantee, leakproof and longer luminous lighting time and brightness preservation guaranteed again.
The luminescent material of the traditional powerhouse lighting defect that possesses skills, all shock adaptive environment well of the structure of incandescent lamp and fluorescent lamp, ability to bear is low, and service life is short, causes the fault of light fixture many, has potential safety hazard once lose efficacy to change.After also existing luminescent material brightness and illumination affected by oil gas, due to the higher problem that cannot be directly clean of luminescent material operating temperature simultaneously.More seriously powerhouse oil and gas environments, has lowered the insulating properties of conventional lamp, usually causes locomotive car body leaky (being commonly called as ground connection), affect locomotive and normally move, and trouble point is difficult to check more, has increased locomotive inspection and repair difficulty.
LED light fixture has certain use advantage under this environment, as " electronics and encapsulation " magazine, the 11st the 4th phase of volume, about what introduce in " great power LED base plate for packaging progress ", conventionally LED light fixture comprises substrate and LED chip, substrate generally includes heat-dissipating metal sheet from bottom to top, metallic circuit layer and weld layer, conventionally utilize epoxy resin that several LED chips are independently covered to be encapsulated in and on heat-dissipating metal sheet, form lamp pearl, by LED chip just, the gold thread of negative pole (just, the connection pin of negative pole) be fixed on weld layer, be connected to by weld layer on the related circuit node of metallic circuit layer.The DC output end sub-connection of DC driven module is LED chip power supply on the corresponding direct current input terminal of metallic circuit layer.DC driven module and substrate are fixed in the lamp casing of sealing, and LED chip is towards diffuse reflection Transparent lamp shade, and the fin on the heat-dissipating metal sheet of substrate stretches out to lamp casing rear portion.
In use, the high-power LED chip being arranged on LED lamp substrate can produce amount of heat, the packaging body forming due to epoxy resin is unfavorable for heat radiation, and apply the ultra-thin abnormal height of insulating heat-conductive pottery cost at heat-dissipating metal sheet, simply by gold thread to substrate transmission heat, can cause solder joint loosening, cause LED chip dead electricity, how improving radiating efficiency need to think better of.
Utility model content
The purpose of this utility model is to provide a kind of diesel locomotive powerhouse LED light fixture, solves the technical problem of light fixture heat radiation under adverse circumstances.
Diesel locomotive powerhouse LED light fixture of the present utility model, comprise DC driven module, substrate and lamp pearl, lamp pearl is evenly distributed on substrate, DC driven module and substrate are fixed in the lamp casing of sealing, and lamp pearl is towards diffuse reflection Transparent lamp shade, and described lamp pearl is made up of LED chip, epoxy encapsulation body and two pins, the positive pole of LED chip connects a pin by a gold thread, and negative pole connects another pin by a gold thread;
Epoxy encapsulation body is made up of the pipe 01 of a low density annulus epoxy resins and the plectane 02 of a transparent epoxy resin, and plectane covers the top of pipe, and LED chip is fixed in pipe;
Pin is made up of sheet metal arranged side by side, and the gold thread link of sheet metal is fixed together, and solder joint link is fixed together, the sheet metal of both sides is bending laterally, pin is through pipe, and gold thread link is positioned at pipe cavity, and solder joint link is positioned at outside pipe cavity.
Also comprise ceramic sheet, be radially fixed on tube wall along pipe, the heat absorbing end of ceramic sheet is positioned at pipe cavity, and near LED chip, the radiating end of ceramic sheet is positioned at outside pipe cavity.
Described sheet metal solder joint link forms connected several solder joints.
Described plectane has radian towards the one side of pipe.
The multirouting pin that diesel locomotive powerhouse LED light fixture of the present utility model utilization is connected with positive and negative electrode gold thread and solder joint reduces the exothermic temperature of the single pin of knowing clearly, make the same node of circuit layer can corresponding several weld layer solder joints, improve radiating efficiency, reduced the be heated possibility of loosening dead electricity of solder joint.The thermal conductive ceramic plate inserting in epoxy resin can be derived LED chip fast from encapsulated layer, reduce LED chip because fuel factor causes the drift of luminescent chromaticity, colour temperature, reduce the probability that the long-time overheated appearance of LED chip was lost efficacy, extend the service life of LED light fixture, guaranteed the luminance proportion on diffuse reflection Transparent lamp shade surface in the working time.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the upward view of the utility model diesel locomotive powerhouse LED lamp bulb in LED lamp;
Fig. 2 is the axle side schematic diagram of the utility model diesel locomotive powerhouse LED lamp bulb in LED lamp;
Fig. 3 is the axonometric drawing of the utility model diesel locomotive powerhouse LED lamp bulb in LED lamp.
The specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, lamp pearl is made up of LED chip 05, epoxy encapsulation body and two pins 03, and the positive pole of LED chip 05 connects a pin 03 by a gold thread 06, and negative pole connects another pin 03 by a gold thread 06.
Epoxy encapsulation body is made up of the pipe 01 of a low density annulus epoxy resins and the plectane 02 of a transparent epoxy resin, plectane 02 covers the top of pipe 01, LED chip 05 is fixed in pipe 01, plectane 02 has radian towards the inner surface of pipe 01, is used for guaranteeing that the light of LED chip 05 forms scattering.
The present embodiment is derived epoxy encapsulation body by multiple sheet metals fast by the heat of gold thread conduction, by heat-dissipating metal sheet quick heat radiating.The larger weld size that solder joint link forms can guarantee the firm of solder joint.
On above-described embodiment basis, the solder joint link of sheet metal can form several solder joints with weld layer, and these solder joints all connect identical circuit node, or forms the several solder joints that are connected.The single-point that can guarantee the like this solder joint inefficacy that gets loose.
On above-described embodiment basis, can also comprise the ceramic sheet 04 of several heat conduction, radially be fixed on tube wall along pipe 01, the heat absorbing end of ceramic sheet 04 is positioned at pipe 01 cavity, near LED chip 05, the radiating end of ceramic sheet 04 is positioned at outside pipe 01 cavity.The heat that ceramic sheet 04 distributes LED chip 05 is directly derived the airtight cavity of epoxy encapsulation body, has avoided heat to plectane 02 Quick diffusing.
On above-described embodiment basis, the radiating end of ceramic sheet 04 is connected with heat-dissipating metal sheet, and its processing technology difficulty is much smaller than apply ultra-thin thermal conductive ceramic on heat-dissipating metal sheet.
By above technical scheme, can be in guaranteeing LED light fixture insulation effect, the good heat radiating of light fixture own, realizes longer non-failure operation time, and illumination colourity, tone are stablized.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. a diesel locomotive powerhouse LED light fixture, comprise DC driven module, substrate and lamp pearl, lamp pearl is evenly distributed on substrate, DC driven module and substrate are fixed in the lamp casing of sealing, lamp pearl is towards diffuse reflection Transparent lamp shade, it is characterized in that: described lamp pearl is made up of LED chip (05), epoxy encapsulation body and two pins (03), the positive pole of LED chip (05) connects a pin (03) by a gold thread (06), and negative pole connects another pin (03) by a gold thread (06);
Epoxy encapsulation body is made up of the pipe (01) of a low density annulus epoxy resins and the plectane (02) of a transparent epoxy resin, and plectane (02) covers the top of pipe (01), and LED chip (05) is fixed in pipe (01);
Pin (03) is made up of sheet metal arranged side by side, the gold thread link of sheet metal is fixed together, solder joint link is fixed together, the sheet metal of both sides is bending laterally, pin (03) is through pipe (01), gold thread link is positioned at pipe (01) cavity, and solder joint link is positioned at outside pipe (01) cavity.
2. diesel locomotive powerhouse LED light fixture according to claim 1, it is characterized in that: also comprise ceramic sheet (04), radially be fixed on tube wall along pipe (01), the heat absorbing end of ceramic sheet (04) is positioned at pipe (01) cavity, near LED chip (05), the radiating end of ceramic sheet (04) is positioned at outside pipe (01) cavity.
3. diesel locomotive powerhouse LED light fixture according to claim 2, is characterized in that: described sheet metal solder joint link forms connected several solder joints.
4. according to claim 2 and 3 arbitrary described diesel locomotive powerhouse LED light fixtures, it is characterized in that: described plectane (02) has radian towards the one side of pipe (01).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057407.3U CN203671408U (en) | 2014-01-29 | 2014-01-29 | Internal combustion locomotive power room LED (light-emitting diode) lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057407.3U CN203671408U (en) | 2014-01-29 | 2014-01-29 | Internal combustion locomotive power room LED (light-emitting diode) lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671408U true CN203671408U (en) | 2014-06-25 |
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ID=50967698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420057407.3U Expired - Fee Related CN203671408U (en) | 2014-01-29 | 2014-01-29 | Internal combustion locomotive power room LED (light-emitting diode) lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135922A (en) * | 2015-08-28 | 2015-12-09 | 中山市绿涛电子科技有限公司 | Radiator |
-
2014
- 2014-01-29 CN CN201420057407.3U patent/CN203671408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135922A (en) * | 2015-08-28 | 2015-12-09 | 中山市绿涛电子科技有限公司 | Radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20170129 |