CN203857325U - G9LED lamp bulb - Google Patents
G9LED lamp bulb Download PDFInfo
- Publication number
- CN203857325U CN203857325U CN201420263810.1U CN201420263810U CN203857325U CN 203857325 U CN203857325 U CN 203857325U CN 201420263810 U CN201420263810 U CN 201420263810U CN 203857325 U CN203857325 U CN 203857325U
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- lamp holder
- lamp
- heat radiation
- light source
- cooling base
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A G9LED lamp bulb comprises a lamp body, an AC (alternating current) LED light source 1 and a lampshade. A PCB (printed circuit board) is arranged in the lamp body, and the AC LED light source is installed on the PCB. The G9LED lamp bulb is characterized in that the lamp body comprises a G9 lamp holder and a heat radiation base, the PCB is connected with electrodes of the G9 lamp holder to form a current loop, heat radiation fins are circularly formed on the periphery of the heat radiation base, and the body of the heat radiation base is provided with a ventilating slot running through the axial section of the heat radiation base. The G9LED lamp bulb has the advantages that integral size is small, integral weight is controlled within 12 grams, the heat radiation base and the lamp holder are integrally designed and formed, heat radiation area is greatly enlarged, and heat radiation efficiency of the LED light source is improved; the vertical ventilating slot arranged in the heat radiation base has a chimney effect, so that heat source at the bottom of the LED lamp bulb is radiated in time through the ventilating slot, heat radiation of the LED light source is more uniform and faster, and the problem that heat radiation of the G9LED lamp is not sufficient due to weight limit of 12 grams is solved, consequently, heat radiation efficiency of the LED light source is greatly improved, and service life and quality of the LED are guaranteed.
Description
Technical field
The utility model relates to a kind of light fixture, particularly a kind of G9LED bulb.
Background technology
G9 type bulb is a kind of stitch type bulb, and this bulb is commonly used on modern European crystal pendant lamp.Traditional G9 lamp is all that employing halogen is light emitting source, and the G9 lamp of this halogen light source consumes energy greatly, light efficiency is low, and service life is short.Along with the development of LED technology, Novel LED light becomes the energy-conservation best substitute of light fixture with its environmental protection and long service life, and a lot of traditional light fixtures are all changed LED bulb as new light emitting source.
But, for G9 lamp bulb, because it is mainly used on crystal pendant lamp, the whole load-bearing of pendent lamp is subject to certain limitation, therefore,, according to the regulation of the international standard BS EN60061-1-1993+A46-2011 of light trade, for the weight of G9 lamp, there is special requirement, in general, the weight of G9 lamp bulb can not be over 12 grams.At present, the LED light source that market substitutes G9 Halogen lamp LED adopts direct-current LED light source more, and special driving power need to be installed, and this makes the overall volume of G9 lamp large, lighting angle is little, weight exceeds standard, and manufactures assembling complexity, with high costs; In addition, when traditional Halogen lamp LED replaces with after LED light source, the heat dissipation problem of LED chip becomes the key of light fitting quality quality, if poor heat radiation can significantly shorten the life-span.
Therefore, G9LED lamp will be considered the thermal diffusivity requirement of LED on the one hand, be confined to again on the other hand the weight requirement of 12 grams, the volume of radiator structure can not be accomplished too large, prior art often cannot be made and can be applicable to the required radiator structure of G9LED bulb heat radiation, can cause the problems such as G9LED lamp lighting angle is little, service life is short.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure and more compact small and exquisite G9LED bulb of volume for above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of G9LED bulb, include lamp body, AC LED light source and lampshade, in described lamp body, be provided with PCB circuit board, described AC LED light source is installed on this PCB circuit board, it is characterized in that: described lamp body includes G9 lamp holder and cooling base, the electrode of described PCB circuit board and described G9 lamp holder is connected and forms current loop, described cooling base and G9 lamp holder are one-body molded, the periphery of described cooling base is formed with a circle fin, the body of described cooling base also offers a ventilation slot that runs through the shaft section setting of this cooling base.
Consider the radiating effect of LED bulb, and the overall dimensions of G9 lamp and freight weight limit requirement, as preferably, the fluting interstice coverage of described ventilation slot is advisable with 0～3mm.If the fluting of ventilation slot is wide, not only can reduce the intensity of G9 lamp holder, destroy connection reliability, also can corresponding minimizing fin quantity and area of dissipation, can reduce the integral heat sink effect of light fixture.
For heat can further outwards be distributed fast, as preferably, described G9 lamp holder is flat, the draw-in groove on the both sides flat horizontal surface of this G9 lamp holder with grafting use, described G9 lamp holder also offers a slit vertically arranging above described draw-in groove, and the central axis of described slit and cooling base coincides.Therefore, LED lamp, except can dispelling the heat from the ventilation slot of cooling base, can also outwards dispel the heat by the slit gap of G9 lamp holder, and the weight limits that also guarantees G9 lamp when increasing radiating efficiency is within prescribed limit.
Above-mentioned slit and ventilation slot can be designed to mutual perforation, also in the middle of can being designed to, cut off and mutually do not connect, as preferably, described ventilation slot and slit connect mutually, the shaft section at described ventilation slot place and the flat horizontal surface of described G9 lamp holder intersect vertically, and the shaft section projection of described ventilation slot and the flat horizontal surface projection of described G9 lamp holder are cross shape.So, after being communicated with, ventilation slot and slit can form an elongated gap, ventilation slot bottom is communicated on G9 lamp holder by slit, just like vertically disposed chimney, the heat that concentrates on base after LED lamp is luminous can be discharged to both sides rapidly by this elongated gap, fully realize stack effect, can reach best radiating effect.
For easy to assembly, alleviate overall weight simultaneously, the body interior of described cooling base also offers the vestibule that arranges vertically and can pass for the electrode pin of G9 lamp holder in the both sides of ventilation slot, offer the through hole that can pass with the electrode pin of described vestibule perforation and the described G9 lamp holder of confession in described G9 lamp holder.
As further preferably, on described PCB circuit board, be also provided with thermistor, this thermistor and the series connection of described ACLED light source.Thermistor can play to AC LED the protective effect of overtemperature and overcurrent, in temperature, raises or when electric current is excessive, thermistor can start, thereby makes Current Control or be reduced to rational numerical value, to greatest extent LED light source is played a protective role.
Compared with prior art, the utility model has the advantage of: overall volume is little, compact conformation, whole lamp weight can be controlled in 12 grams; The one-body molded design of cooling base and lamp holder has increased area of dissipation greatly, improves the radiating efficiency of LED light source; The vertical ventilation slot that cooling base is offered has stack effect, this ventilation slot is just in time positioned on the shaft section of cooling base, consider LED bulb adstante febre, thermal source concentrates on bottom position, the bottom thermal source that is arranged so that LED bulb of ventilation slot can outwards distribute in time by this ventilation slot, thereby the heat radiation that guarantees LED light source is more even, heat radiation is faster, solved G9LED lamp and limited because being subject to 12 gram weight the inadequate problem of dispelling the heat, and then improved widely the radiating efficiency of LED light source, guarantee service life and the quality of LED; Thermistor the normal work that guarantees LED light source is set, can play the effect of controlling electric current when excessive at excess Temperature or electric current, LED light source is realized to effective overtemperature and overcurrent protection.
Accompanying drawing explanation
Fig. 1 is the bulb overall structure schematic diagram of the utility model embodiment.
Fig. 2 is the three-dimensional cutaway view shown in Fig. 1.
Fig. 3 is the bulb three-dimensional exploded view of the utility model embodiment.
Fig. 4 is the cooling base three-dimensional cutaway view (ventilation slot and slit are communicated with) of the utility model embodiment.
Fig. 5 is the cooling base front schematic view of the utility model embodiment.
Fig. 6 is another three-dimensional cutaway view of cooling base (ventilation slot and slit cut off) of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1～Fig. 6, the present embodiment discloses a kind of G9LED bulb structure, this G9LED bulb includes lamp body, AC LED light source 1 and lampshade 2, wherein, lampshade 2 is plastic lamp shade or remote fluorescence powder lampshade, lamp body is one-body molded by G9 lamp holder 3 and cooling base 4, lamp body is provided with the PCB circuit board 5 that thickness is 0.4～1.2mm at the top of cooling base 4, be of a size of long 3.5～7.0mm, SMD type AC LED light source 1 within the scope of wide 3.5～7.0mm is installed on this PCB circuit board 5, on PCB circuit board 5, be also provided with and be of a size of 0402-0603-0805 (representing the imperial sizing of different model), resistance value is the SMD type thermistor 6 of 33～680 ohm, the electrode of PCB circuit board 5 and G9 lamp holder 3 is connected and forms current loop, thermistor 6 and AC LED light source 1 are connected in the current loop of this PCB circuit board 5.
The cooling base 4 of the present embodiment is cylindric, cooling base 4 adopts aluminium oxide or aluminium nitride ceramics material and G9 lamp holder 3 to make overall structure, enclose and form fin 41 the outer Monday of cooling base 4, fin 41 is fin type structure, this finned radiator 41 structures make area of dissipation greatly increase (area of dissipation has increased by 1.7 times), have improved radiating efficiency.
The body of cooling base 4 also offers a ventilation slot 42 that runs through the shaft section setting of this cooling base 4, in order to guarantee area of dissipation, and guarantee overall appearance, easily processing, the fluting interstice coverage of ventilation slot 42 is advisable with 0～3mm, if fluting excesssive gap integral heat sink area reduces again, and ventilation slot 42 is positioned on the axis extended line of cooling base 4.
G9 lamp holder 3 is flat, has the draw-in groove 31 of grafting use on the both sides flat horizontal surface of G9 lamp holder 3, and draw-in groove 31 spaced four raised lines 311 that are from bottom to top parallel to each other form, and draw-in groove 31 is of a size of G9 lamp model specified standard structure.G9 lamp holder 3 also offers a slit 32 vertically arranging between (i.e. the top of the 4th raised line 311 from bottom to top) above draw-in groove 31 and the lower surface of cooling base 4, and the central axis of slit 32 and cooling base 4 coincides; Between ventilation slot 42 and slit 32, can cut off, referring to Fig. 6, also can mutually connect; In order to reach best radiating effect, the ventilation slot 42 of the present embodiment and slit 32 are formed through an elongated gap mutually, referring to Fig. 4, just as vertical chimney, ventilation slot 42 bottoms are communicated on G9 lamp holder 3 by slit 32 always, and the shaft section at ventilation slot 42 places and the flat horizontal surface of G9 lamp holder 3 intersect vertically, the shaft section projection of ventilation slot 42 and the flat horizontal surface projection of G9 lamp holder 3 are cross shape.
In order further to improve radiating effect, the lower surface 43 of cooling base 4 also offers a plurality of louvres 431; The louvre 431 of the present embodiment has four, and two the one group flat horizontal surface both sides that lay respectively at described G9 lamp holder 3.
The body interior of cooling base 4 also offers the vestibule 44 that arranges vertically and can pass for the electrode pin of G9 lamp holder 3 in the both sides of ventilation slot 42, offer the through hole 33 that can connect and supply the electrode pin of G9 lamp holder 3 to pass with vestibule 44 in G9 lamp holder 3; The current-limiting resistance 7 that is 150～5600 ohm by one or two resistance values inserts in the vestibule 44 of cooling bases 4, on wherein one end lead-in wire of current-limiting resistance 7 and PCB circuit board 5, be welded and fixed, the through hole 33 that the other end lead-in wire of current-limiting resistance 7 sees through G9 lamp holder 3 passes to G9 lamp holder 3 bottoms, and is bent to form the G9 lamp stitch 71 that meets IEC60061-1 standard.
When LED lamp is worked conventionally, higher being difficult to again of heat of pcb board bottom distributed, the ventilation slot 42 of the present embodiment and slit 32 arrange and effectively solve the higher problem of LED lamp bottom heat, can produce good cross-ventilation, form heat radiation " stack effect ", the heat of LED light source bottom can be distributed to both sides from the elongated gap of ventilation slot 42 and slit 32 formation, can accomplish the comprehensive heat radiation of whole lamp, improve radiating efficiency; On the other hand, ventilation slot 42 and slit 32 offer the overall weight that has also alleviated G9 lamp, G9LED bulb weight integral body can be able to be controlled in 12 grams, solve G9LED lamp inadequate problem of heat radiation in 12 gram weight restrictions, guarantee luminous flux and the service life of G9LED bulb.
The manufacture method of the G9LED bulb of the present embodiment comprises the following steps:
(1), by size, be that the AC LED light source 1 of SMD type of 3535-7070 and resistance value are that 33～680 ohm and size are that the SMD type thermistor 6 of 0402-0805 is welded on the PCB circuit board 5 that thickness is 0.4～1.2mm, AC LED light source 1 and thermistor 6 for be connected in series and and PCB circuit board 5 formation current loops;
(2), by resistance value, being 150～5600 ohm, one or two current-limiting resistance 7 inserts in cooling base 4 vestibules 44 of lamp bodies, wherein one end of current-limiting resistance 7 lead-in wire as the electrode pin of G9 lamp holder 3 again through the bottom of through hole 33 to the G9 lamp holders 3 of this G9 lamp holder 3;
(3), the back side of PCB circuit board 5 is coated to heat conductive silica gel or the heat-conducting silicone grease that thermal conductivity factor is 1.5-5.0w/m.k, and PCB circuit board 5 is affixed on to the top of cooling base 4, the other end lead-in wire of current-limiting resistance 7 is electrically connected on PCB circuit board 5, and current-limiting resistance 7, AC LED light source 1 are connected in current loop with thermistor 6;
(4), lampshade 2 is placed on PCB circuit board 5, lampshade 2 can be plastic lamp shade or remote fluorescence powder lampshade, and the lead-in wire that current-limiting resistance 7 is piercing in to G9 lamp holder 3 carries out bending, and forms the G9 lamp stitch 71 that meets IEC60061-1 standard.
The thermistor 6 of the present embodiment can carry out overtemperature and overcurrent protection to AC LED light source 1, and when temperature raises, thermistor 6 can start, and resistance value rises at double, and line electricity fails to be convened for lack of a quorum and drops to rational position, thereby AC LED light source 1 is played a protective role; When line voltage distribution raises; line current strengthens; can cause overcurrent; now thermistor 6 also can start, and by Current Control, in a maximum, surpassing this maximum will breaking circuit; when declining from height point Deng voltage; thermistor 6 can recover again automatically, again lights AC LED, can to AC LED, play overcurrent protection to greatest extent.The G9LED lamp technique of the present embodiment is simple, it is high and with low cost to manufacture acceptance rate, not only lighting angle is large, more than light efficiency can be brought up to 60LM/W, and volume is little, whole lamp weight is no more than 12 grams, can in the 12 gram weight restrictions of G9 lamp, guarantee good heat radiating and the normal stable work of LED light source.
Claims (6)
1. a G9 LED bulb, include lamp body, AC LED light source 1 and lampshade, in described lamp body, be provided with PCB circuit board, described AC LED light source is installed on this PCB circuit board, it is characterized in that: described lamp body includes G9 lamp holder and cooling base, the electrode of described PCB circuit board and described G9 lamp holder is connected and forms current loop, described cooling base and G9 lamp holder are one-body molded, the periphery of described cooling base is formed with a circle fin, and the body of described cooling base also offers a ventilation slot that runs through the shaft section setting of this cooling base.
2. G9 LED bulb according to claim 1, is characterized in that: the fluting interstice coverage of described ventilation slot is 0～3mm.
3. G9 LED bulb according to claim 1, it is characterized in that: described G9 lamp holder is flat, the draw-in groove on the both sides flat horizontal surface of this G9 lamp holder with grafting use, described G9 lamp holder also offers a slit vertically arranging above described draw-in groove, and the central axis of described slit and cooling base coincides.
4. G9 LED bulb according to claim 3, it is characterized in that: described ventilation slot and slit connect mutually, the shaft section at described ventilation slot place and the flat horizontal surface of described G9 lamp holder intersect vertically, and the shaft section projection of described ventilation slot and the flat horizontal surface projection of described G9 lamp holder are cross shape.
5. G9 LED bulb according to claim 1, it is characterized in that: the body interior of described cooling base also offers the vestibule that arranges vertically and can pass for the electrode pin of G9 lamp holder in the both sides of ventilation slot, in described G9 lamp holder, offer the through hole that can pass with the electrode pin of described vestibule perforation and the described G9 lamp holder of confession.
6. G9 LED bulb according to claim 1, is characterized in that: on described PCB circuit board, be also provided with thermistor, this thermistor and the series connection of described AC LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263810.1U CN203857325U (en) | 2014-05-21 | 2014-05-21 | G9LED lamp bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263810.1U CN203857325U (en) | 2014-05-21 | 2014-05-21 | G9LED lamp bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203857325U true CN203857325U (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420263810.1U Expired - Fee Related CN203857325U (en) | 2014-05-21 | 2014-05-21 | G9LED lamp bulb |
Country Status (1)
| Country | Link |
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| CN (1) | CN203857325U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968289A (en) * | 2014-05-21 | 2014-08-06 | 宁波福希光电有限公司 | G9 LED lamp and manufacturing method thereof |
| CN110360531A (en) * | 2019-06-28 | 2019-10-22 | 江苏鹏盛光电科技有限公司 | A kind of radiator with high performance and its installation method of bulkhead lamp |
-
2014
- 2014-05-21 CN CN201420263810.1U patent/CN203857325U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968289A (en) * | 2014-05-21 | 2014-08-06 | 宁波福希光电有限公司 | G9 LED lamp and manufacturing method thereof |
| CN110360531A (en) * | 2019-06-28 | 2019-10-22 | 江苏鹏盛光电科技有限公司 | A kind of radiator with high performance and its installation method of bulkhead lamp |
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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 |
Granted publication date: 20141001 Termination date: 20160521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |