CN202733570U - LED lamp tube - Google Patents
LED lamp tube Download PDFInfo
- Publication number
- CN202733570U CN202733570U CN2012204100715U CN201220410071U CN202733570U CN 202733570 U CN202733570 U CN 202733570U CN 2012204100715 U CN2012204100715 U CN 2012204100715U CN 201220410071 U CN201220410071 U CN 201220410071U CN 202733570 U CN202733570 U CN 202733570U
- Authority
- CN
- China
- Prior art keywords
- light shield
- circuit board
- radiator
- led
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
The utility model relates to an LED lamp tube which is simple in structure and good in uniformity of surface illumination of a light emitting cover. The LED lamp tube comprises an elongated heat radiator, a circuit board, a group of LEDs and the light emitting cover, wherein the circuit board is tightly attached on the heat radiator, the LEDs are mounted on the circuit board, and the light emitting cover is connected with the heat radiator. Two ends of the light emitting cover are respectively hermetically connected with two end caps, each end cap is provided with a conductive terminal electrically connected with the circuit board, and the other end of each conductive terminal is connected with a driving circuit used for supplying power to the circuit board. The LED lamp tube is characterized in that the light emitting cover is in the shape of a hollow cylinder, the heat radiator is arranged in the light emitting cover, and one side, without the circuit board, of the heat radiator is tightly attached to the inner wall of the light emitting cover, a gap is reserved between each LED and the axis of the light emitting cover, and the LEDs are distributed by rightly aligning to the axis. The LED lamp tube is applicable to LED lighting appliances.
Description
Technical field
The utility model belongs to the LED ligthing paraphernalia, particularly a kind of LED spot.
Background technology
As shown in Figure 1, existing LED spot lamp body shell is commonly part bar shaped heat sink section bar 1 ' and part PC goes out light shield 4 ' composition, it is interior or external that drive circuit is arranged at the bar shaped radiator casing, circuit board 2 ' is fixed on the bar shaped heat sink section bar 1 ', LED3 ' is mounted on the circuit board 2 ', LED3 ' light-emitting area is positioned at the lamp body circle centre position, and bar shaped heat sink section bar 1 ' and PC go out light shield 4 ' to be fixed by draw-in groove, and sealing is relatively poor; Temperature is higher during drive circuit works, and bar shaped heat sink section bar 1 ' homogeneous temperature type is relatively poor; It is relatively poor that PC goes out light shield the 4 ' surperficial uniformity of illuminance, and dark line is obvious.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence provide a kind of simple in structure, go out the good LED spot of light shield surface uniformity of illuminance.
The technical scheme that the utility model adopts is: the LED spot, comprise the bar shaped radiator, be close to the circuit board on this radiator, be mounted on one group of LED on this circuit board, and be connected with radiator go out light shield, this goes out the light shield two ends end cap that is tightly connected respectively, be respectively equipped with the conducting terminal that is electrically connected with circuit board on each end cap, the other end of each conducting terminal all connects for the drive circuit to the circuit board power supply, it is characterized in that: described to go out light shield be the cylindrical shape of hollow, radiator integral is positioned at this and goes out light shield, and do not arrange that circuit board one side is close to the light shield inwall, each LED and go out between the light shield axis to leave the gap, and over against this axis arranged.
Offer two chutes along its length direction symmetry on the described radiator, go out simultaneously on the light shield inwall and be shaped with two fins that are complementary with this chute along its length direction symmetry.
Be shaped with some heat radiation fin rays of arranging along its length direction on the described radiator.
Describedly go out between light shield and the end cap fluid sealant is set.
Described drive circuit is positioned at the light shield outside.
Describedly go out light shield and adopt the PC material to make.
The beneficial effects of the utility model are: 1, by the LED position is moved down, namely LED is not positioned on the axis of light shield, and over against this axis arranged, has greatly improved PC and gone out light shield surface uniformity of illuminance; 2, PC goes out light shield and has scattering power, and part LED light is because scattering changes the path, and the lamp luminescence angle is greater than 300 °, thereby has improved illuminating effect; 3, go out the hollow circle tube that light shield is global formation, and go out between light shield and the end cap fluid sealant is set, strengthened significantly light fixture antifogging and dustproof waterproof ability; 4, radiator, circuit board and LED all are positioned at light shield inside, the possibility of having avoided the light fixture user to get an electric shock; 5, drive circuit is external, so that the bar shaped radiator temperature is more even.
Description of drawings
Fig. 1 is the structure of the utility model background technology and goes out light shield surface illumination analysis figure.
Fig. 2 is stereogram of the present utility model.
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 2.
Fig. 4 is the A section enlarged drawing of Fig. 3.
Fig. 5 is side-looking of the present utility model and goes out light shield surface illumination analysis figure.
Fig. 6 is index path of the present utility model.
The specific embodiment
Such as Fig. 2-shown in Figure 4, the present embodiment comprises bar shaped radiator 1, is pasted on circuit board 2 on this radiator, is mounted on one group of LED3 on this circuit board by heat conduction film 9, and be connected with radiator 1 go out light shield 4; Describedly go out the light shield 4 two ends end cap 5 that is tightly connected respectively, be respectively equipped with the conducting terminal 6 that is electrically connected with circuit board 2 on each end cap, the other end of each conducting terminal all connects drive circuits by connecting line 8, is used for the LED3 power supply on the circuit board 2.In this example, radiator 1 integral body is positioned at light shield 4, and radiator 1 not mounting circuit boards 2 one sides be the circular arc identical with going out light shield 4 radians; Describedly going out the abbreviation that light shield 4 adopts the PC(Merlon) material makes, and the hollow circle tube that is formed in one, one is shaped with two fin 4-1 that are arranged symmetrically with on its inwall, each fin 4-1 all arranges along the length direction that goes out light shield 4, accordingly, offer two chute 1-1 that are complementary with described fin 4-1 along its length direction symmetry on the radiator 1; During installation with chute 1-1 with after fin 4-1 aims at, again radiator 1 integral body is pushed out in the light shield 4 and get final product, simultaneously because chute 1-1 and fin 4-1 are interference fits, after the installation, radiator 1 and go out between the light shield 4 not can relative sliding, and its cambered surface (mounting circuit boards one side) with go out light shield 4 inwalls and be close to and contact.Each LED3 is in one line to be linked to be the linearity parallel with going out light shield 4 axis, article two, leave gap (being that each LED all is not positioned on the light shield axis) between the straight line (straight line that LED is linked to be and go out the light shield axis), and all over against going out light shield 4 axis arranged, this structure is so that PC goes out light shield 4 surperficial uniformity of illuminances improvement to each LED3; Illumination is with reference to computational methods: E ≈ Icos θ/r
2, illumination approximately is directly proportional with angle cosine, square is about inverse ratio with irradiation distance.Shown in Fig. 1,5, A, 2 of B lay respectively at take the center of circle and are datum mark, 0 ° and 45 ° PC bright dipping cover outer surface 2 points of angle, as calculated, the utility model A, 2 illumination ratios of B be 0.98(as shown in Figure 5), existing spot A, 2 illumination ratios of B be 0.7(as shown in Figure 1).By the contrast of illumination ratio, it is obvious that the utility model LED spot PC goes out light shield 4 surperficial uniform-illumination property improvements.
As to further the improving and replenishing of technique scheme, the utility model also comprises the additional technical feature that following each section addressed, and they can be selected on the described technical scheme of epimere according to concrete effect when implementing the utility model.
Be shaped with some heat radiation fin ray 1-2 that arrange along its length direction on the described radiator 1, to increase the area of dissipation of radiator, improve radiating efficiency.
Describedly go out between light shield 4 and the end cap 5 fluid sealant is set, strengthened significantly light fixture antifogging and dustproof waterproof ability.
Described drive circuit is positioned at light shield 4 outsides, so that the bar shaped radiator temperature is more even.
Described PC goes out light shield 4 and contains diffusant, possesses the light scattering function, as shown in Figure 6, when light goes out light shield 4 through PC, because the scattering that PC goes out light shield 4 interior medias, part light has changed radiation direction to many-side, so that this routine LED spot lighting angle is greater than 300 °.
Claims (6)
1. LED spot, comprise bar shaped radiator (1), be close to the circuit board (2) on this radiator, be mounted on one group of LED(3 on this circuit board), and be connected with radiator (1) go out light shield (4), this goes out the light shield two ends end cap (5) that is tightly connected respectively, be respectively equipped with the conducting terminal (6) that is electrically connected with circuit board (2) on each end cap, the other end of each conducting terminal all connects for the drive circuit to circuit board (2) power supply, it is characterized in that: describedly go out light shield (4) and be the cylindrical shape of hollow, radiator (1) integral body is positioned at this and goes out light shield, and do not arrange that circuit board (2) one sides are close to light shield (4) inwall, each LED(3) and go out between light shield (4) axis to leave the gap, and over against this axis arranged.
2. LED spot according to claim 1, it is characterized in that: described radiator (1) is upper offers two chutes (1-1) along its length direction symmetry, goes out simultaneously on light shield (4) inwall to be shaped with two fins that are complementary with this chute (4-1) along its length direction symmetry.
3. LED spot according to claim 1 and 2 is characterized in that: be shaped with some heat radiation fin rays (1-2) of arranging along its length direction on the described radiator (1).
4. LED spot according to claim 1 and 2 is characterized in that: describedly go out between light shield (4) and the end cap (5) fluid sealant is set.
5. LED spot according to claim 1 and 2, it is characterized in that: described drive circuit is positioned at light shield (4) outside.
6. LED spot according to claim 1 and 2 is characterized in that: describedly go out light shield (4) and adopt the PC material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204100715U CN202733570U (en) | 2012-08-17 | 2012-08-17 | LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204100715U CN202733570U (en) | 2012-08-17 | 2012-08-17 | LED lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733570U true CN202733570U (en) | 2013-02-13 |
Family
ID=47659266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204100715U Expired - Fee Related CN202733570U (en) | 2012-08-17 | 2012-08-17 | LED lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629569A (en) * | 2013-06-18 | 2014-03-12 | 宁波亿佳电子照明有限公司 | Waterproof LED lamp and sealing method |
-
2012
- 2012-08-17 CN CN2012204100715U patent/CN202733570U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629569A (en) * | 2013-06-18 | 2014-03-12 | 宁波亿佳电子照明有限公司 | Waterproof LED lamp and sealing method |
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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: 20130213 Termination date: 20150817 |
|
| EXPY | Termination of patent right or utility model |