CN204554530U - A kind of LED down - Google Patents
A kind of LED down Download PDFInfo
- Publication number
- CN204554530U CN204554530U CN201520207074.2U CN201520207074U CN204554530U CN 204554530 U CN204554530 U CN 204554530U CN 201520207074 U CN201520207074 U CN 201520207074U CN 204554530 U CN204554530 U CN 204554530U
- Authority
- CN
- China
- Prior art keywords
- reflector
- cover
- heat radiating
- led
- radiating cup
- 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
Links
- 201000009310 astigmatism Diseases 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000005286 illumination Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The utility model provides a kind of LED down, and it comprises holder housing, supply unit, heat radiating cup cover, LED light source component, reflector, astigmatism lid and clasp; Described holder housing is located at the bottom of heat radiating cup cover, and described supply unit is arranged in holder housing, and supply unit is connected with LED light source component provides power supply; Described reflector is arranged on the inner and flared structure that cover body is big up and small down of heat radiating cup cover, LED light source component is located in the middle of the bottom of reflector, astigmatism cover buckle is put in the upper end open of reflector, and clasp is buckled on the periphery, upper end at astigmatism lid and is fixed on reflector by astigmatism lid; The utility model LED down can be arranged on simultaneously 5 inches with the light fixture of 6 inches on use, and cost is low, and luminous intensity distribution is concentrated, and can reach Energy Star standard, simultaneously the vision of lamp and good illumination effect.
Description
Technical field
The utility model belongs to lighting field, particularly a kind of for 5 inches of LED down with 6 inches of light fixtures.
Background technology
Tradition 5 inches and 6 inches of Down lamps need first install 5 inches with the trim (TRIM) of 6 inches, then load onto conventional lamp; Tradition 5 inches and 6 inches of Down lamps belong to directionality lighting, and its light angle of emergence is usually much larger than PAR lamp, is widely used in general lighting in North America.
Take LED as the 5-6 inch Down lamp of light source design, its light efficiency level is approximately 6 times of traditional Down lamp, has obvious energy-saving effect.But existing LED 5 inches is with 6 inches of Down lamps because bright dipping is concentrated not, and light distribution effect is poor, seldom have product can reach the asterisk standard of american energy, and the vision of lamp and illuminating effect also poor.In addition, existing most LED 5 inches adopts to separate with 6 inches of Down lamp products and designs, and can not share; And a lot of die casting aluminium structure that adopts carries out global design, cause whole lamp heavier-weight, production cost is higher.
Utility model content
The technical problems to be solved in the utility model, be to provide a kind of LED down, it has fully utilized the optically focused of reflector and the diffusion of astigmatism lid, thus can reach the light distribution effect of expection, make this LED down not only can reach Energy Star standard lamp, and vision and illuminating effect better.
The utility model is achieved in that a kind of LED down, and it comprises holder housing, supply unit, heat radiating cup cover, LED light source component, reflector, astigmatism lid and clasp; Described holder housing is located at the bottom of heat radiating cup cover, and described supply unit is arranged in holder housing, and supply unit is connected with LED light source component provides power supply; Described reflector is arranged on the inner and flared structure that cover body is big up and small down of heat radiating cup cover, LED light source component is located in the middle of the bottom of reflector, astigmatism cover buckle is put in the upper end open of reflector, and clasp is buckled on the periphery, upper end at astigmatism lid and is fixed on reflector by astigmatism lid.
For the ease of installing Down lamp, the flared structure that the cover body of described heat radiating cup cover is big up and small down, the upper end of the cover body of heat radiating cup cover is provided with the annular flange flange extended to peripheral direction; Described LED down also comprises the symmetrical two groups of torsion spring member being arranged on the cover body both sides external of heat radiating cup cover respectively, often organizes torsion spring member and comprises the support and torsion spring that is rack-mount and that open in splayed structure that are arranged on heat radiating cup cover outside downwards.
Conveniently fixation reflex cover astigmatism lid and clasp, the bell-mouthed periphery in described reflector upper end is provided with the annular flange flange extended to peripheral direction, this annular flange flange is provided with multiple thin rectangular installing hole penetrating up and down, and the cover body outer wall of reflector is provided with the draw-in groove being positioned at side below installing hole; Described astigmatism lid periphery is provided with the gap slot corresponding with each position of mounting hole, and the lower end of astigmatism lid periphery is provided with adjacent gap slot side and arranges and multiple L-type buckles that can insert downwards in installing hole; The lower end of clasp periphery is provided with multiple corresponding with each gap slot position respectively and Elastic buckle that can be arranged on through gap slot in installing hole, and the lower end of Elastic buckle slopes inwardly and is provided with in inside portion and can hook the snap fit in draw-in groove.
In order to protect and install power circuit, described holder housing comprises the upper cover and protective cover be made up of insulating materials, and protective cover is installed and is connected to the below of upper cover, and bottom and the upper cover of described reflector are bolted part to carry out installation and be connected.
For the ease of Down lamp is arranged on light fixture, described supply unit comprises power supply circuit board, described power supply circuit board is placed between upper cover and protective cover, power supply circuit board is connected with the lamp holder connector be placed on outside protective cover, the activity of lamp holder connector is plugged with the connecting piece of lamp cap for being connected with lamp installation cylinder, and described lamp installation cylinder is the installed part being installed on LED down outside.
In order to increase light distribution effect, described LED light source component is welded on aluminium base by multiple LED particle and forms, and the aluminium base being welded with LED particle is fixed on the center of heat radiating cup cover inner bottom.The reflection bore of described reflector is 75-84mm, and the height of reflector is 25-32mm.The interior reflective surface curvature of described reflector is 0-150mm.
The utility model has the advantage of: 1, the utility model comprehensive utilization optically focused of reflector and the diffusion of astigmatism lid reach the light distribution effect of expection, not only can reach Energy Star standard lamp, and vision and illuminating effect are better, are conducive to reducing costs simultaneously.2, the utility model adopts the torsion spring member of splayed structure, during installation, torsion spring member directly can compress light fixture, the size of the annular flange flange of outer, heat radiating cup cover top is mated with 6 inches of light fixtures simultaneously, can realize meeting 5 inches simultaneously and use with 6 inches of two kinds of light fixtures.3, the utility model heat radiating cup cover is that sheet metal is formed by spinning, and directly exposes setting, can reduce the weight of Down lamp, and reduce the cost of lamp.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is the decomposition texture schematic diagram of LED down of the present utility model.
Fig. 2 is the overall structure schematic diagram of LED down of the present utility model.
Fig. 3 is the reflection cover structure schematic diagram of LED down of the present utility model.
Fig. 4 is the astigmatism lid structural representation of LED down of the present utility model.
Fig. 5 is the snap ring structure schematic diagram of LED down of the present utility model.
Fig. 6 is the package assembly schematic diagram of the reflector of LED down of the present utility model, astigmatism lid and clasp.
Fig. 7 is the structural representation that LED down of the present utility model is arranged on mounted lamp.
Symbol description in figure: 1, clasp, 11, buckle, 111, snap fit, 2, astigmatism lid, 21, L-type buckle, 22, gap slot, 3, reflector, 31, installing hole, 32, draw-in groove, 4, LED light source component, 5, heat radiating cup cover, 6, torsion spring member, 61, support, 62, torsion spring; 7, supply unit, 8, holder housing, 81, upper cover, 82, protective cover, 9, lamp holder connector, 10, connecting piece of lamp cap; 100, lamp installation cylinder, 101, mounting bracket.
Detailed description of the invention
Refer to shown in Fig. 1,2, be a kind of LED down described in the utility model, it comprises holder housing 8, supply unit 7, heat radiating cup cover 5, LED light source component 4, reflector 3, astigmatism lid 2 and clasp 1; Described holder housing 8 is located at the bottom of heat radiating cup cover 5, and described heat radiating cup cover 5 is formed by spinning for sheet metal, and directly exposes setting, and described supply unit 7 is arranged in holder housing 8, and supply unit 7 is connected with LED light source component 4 provides power supply; Described reflector 3 is arranged on the inner and flared structure that cover body is big up and small down of heat radiating cup cover 5, LED light source component 4 is located in the middle of the bottom of reflector 3, astigmatism lid 2 buckles in the upper end open of reflector 3, and clasp 1 is buckled on the periphery, upper end at astigmatism lid 2 and is fixed on reflector 3 by astigmatism lid 2.Described LED light source component 4 is welded on aluminium base by multiple LED particle and forms, and LED light source both can carry out connection in series-parallel combination by some packaged single LEDs, also plurality of LEDs integrated chip can be packaged into COB light source.
As shown in Figure 1, 2, for the ease of installing Down lamp, the flared structure that the cover body of described heat radiating cup cover 5 is big up and small down, the height of cover body is not more than 200mm, the upper end of the cover body of heat radiating cup cover 5 is provided with the annular flange flange extended to peripheral direction, the internal diameter of annular flange flange is not more than 153mm, and external diameter is not less than 160mm; Described LED down also comprises the symmetrical two groups of torsion spring member 6 being arranged on the cover body both sides external of heat radiating cup cover 5 respectively, often organizes torsion spring member 6 and comprises the support 61 that is arranged on heat radiating cup cover 5 outside and be arranged on the torsion spring 62 opened on support 61 and in splayed structure downwards.
As in Figure 3-5, conveniently fixation reflex cover astigmatism lid and clasp, the bell-mouthed periphery in described reflector 3 upper end is provided with the annular flange flange extended to peripheral direction, this annular flange flange is provided with multiple thin rectangular installing hole 31 penetrating up and down, and the cover body outer wall of reflector 3 is provided with the draw-in groove 32 being positioned at side below installing hole 31; Described astigmatism lid 2 periphery is provided with the gap slot 22 corresponding with each installing hole 31 position, and the lower end of astigmatism lid 2 periphery is provided with adjacent gap slot 22 side and arranges and multiple L-type buckles 21 that can insert downwards in installing hole 31; The lower end of clasp 1 periphery is provided with multiple corresponding with each gap slot 22 position respectively and Elastic buckle 11 that can be arranged on through gap slot 22 in installing hole 31, and the lower end of Elastic buckle 11 slopes inwardly and is provided with the snap fit 111 that can hook in draw-in groove 32 in inside portion.
As shown in Fig. 1,7.In order to protect and install power circuit, described holder housing 8 comprises the upper cover 81 and protective cover 82 be made up of insulating materials, and protective cover 82 is installed and is connected to the below of upper cover 81, and bottom and the upper cover 81 of described reflector 3 are bolted part to carry out installation and be connected.For the ease of Down lamp is arranged on light fixture, described supply unit 7 comprises power supply circuit board, described power supply circuit board is placed between upper cover 81 and protective cover 82, power supply circuit board is connected with the lamp holder connector 9 be placed on outside protective cover 82, lamp holder connector 9 activity is plugged with the connecting piece of lamp cap 10 for being connected with lamp installation cylinder 100, and described lamp installation cylinder 100 is the installed parts being installed on LED down outside.
For realizing light distribution effect further, the reflection bore of reflector 3 is 75-84mm, is highly 25-32mm; Reflector 2 material is high reflectance polycarbonate, and by mold polish and injection mo(u)lding realizes high reflectance, the interior reflective surface curvature of reflector 3 is 0-150mm.Its optic angle controls at 90-100 degree, ensures that the luminous flux in beam angle 120 reaches more than 80% of whole lamp.Astigmatism lid 2 is made up of major ingredient clear polycarbonate a certain proportion of diffusion particle that adulterates, and by regulating its ratio, can realize different scattering degree, coordinating with reflector 3, thus reaches the object changing rising angle and light reduction of fractions to a common denominator cloth.
As shown in Figure 7, Down lamp described in the utility model is arranged on mounted lamp, put on the mounting bracket 101 of lamp installation cylinder 100 after torsion spring 62 pressing of the splayed structure of described two groups of torsion spring member 6, after removing pressure, torsion spring 62 compresses mounting bracket 101 under elastic force effect, can described Down lamp be arranged in light fixture, the annular flange flange size of outer, heat radiating cup cover 5 top is mated with 6 inches of mounted lamps simultaneously, can realize meeting 5 inches simultaneously and use with 6 inches of two kinds of light fixtures.The annular flange flange size of outer, the utility model Down lamp heat radiating cup cover 5 top can make the full-size being greater than lamp installation cylinder, the cover body of heat radiating cup cover 5 can make the minimum dimension being less than lamp installation cylinder simultaneously, makes the utility model Down lamp can adapt to be arranged on the light fixture of any size.
Another embodiment of Down lamp described in the utility model is: described Down lamp comprises supply unit, barrel cover and LED light assembly; Described supply unit comprises drive circuit and actuator chamber, and described drive circuit is installed in actuator chamber, is made up of in described actuator chamber upper cover and protective cover; Described barrel cover comprises horn cover and fixation kit, and described fixation kit comprises two torsion springs, and torsion spring is fixed on horn cover outer wall; Described LED light assembly comprises at least 1 LEDs light source, reflector, astigmatism lid and clasp, and described LED light source is placed in the middle of bottom reflector, and described astigmatism lid is placed in reflector top, and described clasp is buckled in astigmatism lid outer rim; Barrel cover outer bottom is located at by described supply unit, and barrel cover inner bottom part is located at by described LED light assembly, and described supply unit is connected with LED light assembly provides power supply.
Above-mentioned detailed description of the invention is just explained in detail the technical solution of the utility model; the utility model has more than and is only confined to above-described embodiment; every any improvement according to the utility model principle or replacement, all should within protection domain of the present utility model.
Claims (8)
1. a LED down, is characterized in that: it comprises holder housing (8), supply unit (7), heat radiating cup cover (5), LED light source component (4), reflector (3), astigmatism lid (2) and clasp (1); Described holder housing (8) is located at the bottom of heat radiating cup cover (5), described supply unit (7) is arranged in holder housing (8), and supply unit (7) is connected with LED light source component (4) provides power supply; Described reflector (3) is arranged on the inner and flared structure that cover body is big up and small down of heat radiating cup cover (5), LED light source component (4) is located in the middle of the bottom of reflector (3), astigmatism lid (2) buckles in the upper end open of reflector (3), and clasp (1) is buckled in the periphery, upper end of astigmatism lid (2) and is fixed on reflector (3) by astigmatism lid (2).
2. LED down according to claim 1, is characterized in that: the flared structure that the cover body of described heat radiating cup cover (5) is big up and small down, and the upper end of the cover body of heat radiating cup cover (5) is provided with the annular flange flange extended to peripheral direction; Described LED down also comprises two groups of torsion spring member (6) that symmetry is respectively arranged on the cover body both sides external of heat radiating cup cover (5), often organize torsion spring member (6) comprise be arranged on the outside support (61) of heat radiating cup cover (5) and be arranged on support (61) upper and be the torsion spring (62) that splayed structure is opened downwards.
3. LED down according to claim 1 and 2, it is characterized in that: the bell-mouthed periphery in described reflector (3) upper end is provided with the annular flange flange extended to peripheral direction, this annular flange flange is provided with multiple thin rectangular installing hole (31) penetrating up and down, and the cover body outer wall of reflector (3) is provided with the draw-in groove (32) being positioned at installing hole (31) below side; Described astigmatism lid (2) periphery is provided with the gap slot (22) corresponding with each installing hole (31) position, and the lower end of astigmatism lid (2) periphery is provided with adjacent gap slot (22) side and arranges and the multiple L-type buckles (21) can inserted downwards in installing hole (31); The lower end of clasp (1) periphery is provided with multiple corresponding with each gap slot (22) position respectively and can pass gap slot (22) and be arranged on Elastic buckle (11) in installing hole (31), and the lower end of Elastic buckle (11) slopes inwardly and is provided with the snap fit (111) that can hook in draw-in groove (32) in inside portion.
4. LED down according to claim 1, it is characterized in that: described holder housing (8) comprises the upper cover (81) and protective cover (82) be made up of insulating materials, protective cover (82) is installed and is connected to the below of upper cover (81), and bottom and the upper cover (81) of described reflector (3) are bolted part to carry out installation and be connected.
5. LED down according to claim 4, it is characterized in that: described supply unit (7) comprises power supply circuit board, described power supply circuit board is placed between upper cover (81) and protective cover (82), power supply circuit board is connected with the lamp holder connector (9) being placed on protective cover (82) outside, lamp holder connector (9) activity is plugged with the connecting piece of lamp cap (10) for being connected with lamp installation cylinder (100), and described lamp installation cylinder (100) is the installed part being installed on LED down outside.
6. LED down according to claim 1, is characterized in that: described LED light source component (4) is welded on aluminium base by multiple LED particle and forms.
7. LED down according to claim 1, is characterized in that: the reflection bore of described reflector (3) is 75-84mm, and the height of reflector (3) is 25-32mm.
8. LED down according to claim 1, is characterized in that: the interior reflective surface curvature of described reflector (3) is 0-150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207074.2U CN204554530U (en) | 2015-04-08 | 2015-04-08 | A kind of LED down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207074.2U CN204554530U (en) | 2015-04-08 | 2015-04-08 | A kind of LED down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204554530U true CN204554530U (en) | 2015-08-12 |
Family
ID=53829637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520207074.2U Expired - Fee Related CN204554530U (en) | 2015-04-08 | 2015-04-08 | A kind of LED down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204554530U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114869A (en) * | 2015-09-08 | 2015-12-02 | 欧普照明股份有限公司 | LED lamp |
| CN105972518A (en) * | 2016-02-17 | 2016-09-28 | 福建永德吉灯业股份有限公司 | LED replacement light source matched with traditional tube light and LED ceiling light |
| CN106090749A (en) * | 2016-04-07 | 2016-11-09 | 漳州立达信灯具有限公司 | Tube lamp installing structure |
| CN106195667A (en) * | 2016-08-25 | 2016-12-07 | 美翔照明科技(深圳)有限公司 | A kind of LED illumination lamp |
| CN106764495A (en) * | 2016-12-30 | 2017-05-31 | 深圳民爆光电技术有限公司 | LED module down lamps |
| CN106931319A (en) * | 2015-10-19 | 2017-07-07 | Lg伊诺特有限公司 | Lighting apparatus |
-
2015
- 2015-04-08 CN CN201520207074.2U patent/CN204554530U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114869A (en) * | 2015-09-08 | 2015-12-02 | 欧普照明股份有限公司 | LED lamp |
| CN106931319A (en) * | 2015-10-19 | 2017-07-07 | Lg伊诺特有限公司 | Lighting apparatus |
| CN106931319B (en) * | 2015-10-19 | 2020-07-31 | Lg伊诺特有限公司 | Lighting device |
| CN105972518A (en) * | 2016-02-17 | 2016-09-28 | 福建永德吉灯业股份有限公司 | LED replacement light source matched with traditional tube light and LED ceiling light |
| CN105972518B (en) * | 2016-02-17 | 2019-06-18 | 福建永德吉灯业股份有限公司 | The LED replacement light source and LED ceiling light being adapted to traditional downlight |
| CN106090749A (en) * | 2016-04-07 | 2016-11-09 | 漳州立达信灯具有限公司 | Tube lamp installing structure |
| CN106195667A (en) * | 2016-08-25 | 2016-12-07 | 美翔照明科技(深圳)有限公司 | A kind of LED illumination lamp |
| CN106764495A (en) * | 2016-12-30 | 2017-05-31 | 深圳民爆光电技术有限公司 | LED module down lamps |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204554530U (en) | A kind of LED down | |
| CN206918824U (en) | down lamp | |
| AU2018318793A1 (en) | Led bulb having light guide body | |
| CN203363898U (en) | Separating LED down lamp | |
| CN204042603U (en) | A kind of LED spotlight | |
| CN208349115U (en) | A kind of bicyclic attaching type Landscape Lamp | |
| CN207455365U (en) | A kind of LED ceiling lamp lens module | |
| CN203115749U (en) | Modular light-emitting diode (LED) down lamp | |
| CN202546609U (en) | LED lens | |
| CN202176944U (en) | Decorative lamp | |
| CN205299277U (en) | LED spotlight | |
| CN201902922U (en) | High-power LED (light-emitting diode) track spot lamp | |
| CN201983105U (en) | LED (light-emitting diode) cabinet lamp | |
| CN203068346U (en) | Light-emitting diode (LED) ceiling lamp | |
| CN203082606U (en) | Light-emitting diode (LED) bulb | |
| CN202719476U (en) | LED(light-emitting diode) reflector lamp with novel lens | |
| CN211952512U (en) | Lamp with grille lens | |
| CN202613262U (en) | Photoelectric separate heat dissipation-type LED pendant lamp with groove | |
| CN203215482U (en) | Integrated suspended ceiling aluminum pinch plate LED lamp | |
| CN102606921A (en) | Flat bulb | |
| CN202419398U (en) | LED ceiling lamp | |
| CN202065724U (en) | LED bulb with large illuminating surface | |
| CN209801267U (en) | Ceiling spotlight with simple structure | |
| CN205424537U (en) | Interior recessed lamp with integration lamp stand | |
| CN207005941U (en) | High-brightness down lamp with strong heat dissipation |
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: 20150812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |