CN208418524U - A kind of optical energy streetlamp convenient for protecting light energy board - Google Patents
A kind of optical energy streetlamp convenient for protecting light energy board Download PDFInfo
- Publication number
- CN208418524U CN208418524U CN201821254742.7U CN201821254742U CN208418524U CN 208418524 U CN208418524 U CN 208418524U CN 201821254742 U CN201821254742 U CN 201821254742U CN 208418524 U CN208418524 U CN 208418524U
- Authority
- CN
- China
- Prior art keywords
- lamp stand
- light energy
- hollow lamp
- energy board
- metal plate
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims abstract description 54
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000005286 illumination Methods 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses a kind of optical energy streetlamps convenient for protecting light energy board, belong to city illumination technical field, including headlamp, strut, hollow lamp stand, ring flange, light energy board, charging-discharging controller and battery；Orbitron, sliding block and metal plate are additionally provided in the hollow lamp stand, the hollow lamp stand is open at one end.A kind of optical energy streetlamp convenient for protecting light energy board provided by the utility model, pass through the folding structure for being set as being made of multiple solar panels by light energy board, light energy board is connect with sliding block and metal plate, make light energy board folding storage in hollow lamp stand when, metal plate can be with the sliding of sliding block, form the hollow lamp stand of a closure, it can be effectively avoided and be chronically exposed to the extraneous aging and damage for causing solar panels, increase the service life of solar panels, it can be in the more luminous energy of the good weather collection of illumination, it is further converted to electric energy storage, it will not cause to power off or power unstable problem because of weather reason.
Description
Technical field
The utility model belongs to city illumination technical field, and in particular to a kind of optical energy streetlamp convenient for protecting light energy board.
Background technique
Optical energy streetlamp majority is powered using solar panel, and sealed cell stores electric energy, and ultra-bright LED lamps and lanterns are made
It for light source, and is controlled by intelligent charging-discharging controller, for replacing the street lamp of conventional electric power illumination.It is taken because solar energy belongs to
Not to the utmost, nexhaustible, cleanliness without any pollution and the reproducible environmentally protective energy, optical energy streetlamp have without being laid with cable, being not necessarily to
Alternating Current Power Supply does not generate the electricity charge, and stability is good, the service life is long, luminous efficiency is high, simple installation, security performance height, energy conservation and environmental protection,
The advantages that economical and practical.It can be widely applied to the places such as city primary and secondary arterial highway, cell, factory, parking lot.
The solar panel of existing optical energy streetlamp is installed at the top of the lamp stand of street lamp more or the lamp stand top of street lamp, big portion
Divide without masking, since outside climatic environmental change multiterminal or even some areas are existing extremely harsh climatic environments, is directly exposed to
The backboard of solar panel, encapsulating material, battery and circuit etc. can be caused different degrees of damage in external environment or added
Fast aging shortens solar panel physical life, and then increases cost.
Utility model content
In order to overcome the defects of the prior art described above, technical problem to be solved by the utility model is to provide one kind just
In the optical energy streetlamp of protection light energy board.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: a kind of convenient for protection light energy board
Optical energy streetlamp, including headlamp, strut, hollow lamp stand, ring flange, light energy board, charging-discharging controller and battery；The strut
One end connect the other end with hollow lamp stand and connect with headlamp, and the hollow lamp stand is connect with ring flange, and the ring flange is fixed
In on ground；The bottom that the charging-discharging controller and battery are electrically connected and are arranged in hollow lamp stand, the light energy board are set
It sets in hollow lamp stand；
Orbitron, sliding block and metal plate are additionally provided in the hollow lamp stand, the hollow lamp stand is open at one end；The track
Pipe is connect with the inner wall of hollow lamp stand, and the sliding block is slidably connected with orbitron, and the light energy board is for folding structure and by more
A solar panels composition, one end of first piece of solar panels of the light energy board is fixed on orbitron and and charging-discharging controller
Electrical connection, the other end are connect with second piece of light energy board, and the light energy board is connect with sliding block, last block sun of the light energy board
One end of energy plate and metal plate connects, and the other end of the metal plate is fixed in hollow lamp stand, and the metal plate and sliding block connect
It connects.
Wherein, two identical orbitrons up and down are set in the hollow lamp stand.
Wherein, the orbitron is circular rails deferent.
Wherein, the metal plate is arc sheetmetal and radian is identical as hollow lamp stand.
Wherein, the solar panels are hinged between any two.
Wherein, the outer wall of described hollow lamp stand opening one end is equipped with Button Block, and the metal plate is connect with solar panels
One end be equipped with hasp, the Button Block can connect to form hasp lock with hasp.
Wherein, the lower half of hollow lamp stand is arranged in the hollow lamp stand opening.
The utility model has the beneficial effects that: foldable by the way that light energy board to be set as being made of multiple solar panels
Structure, and light energy board is connect with sliding block, make light energy board when not in use can folding storage in hollow lamp stand；By light energy board
Last block solar panels connect with metal plate, metal plate is connect with sliding block, when light energy board folding storage is in hollow lamp stand
When, metal plate can slide on the orbitron of hollow lamp stand opening with the sliding of sliding block, form the hollow lamp of a closure
Bar can be effectively avoided and be chronically exposed to the extraneous aging and damage for causing solar panels, increases the use of solar panels
Service life, and muti-piece solar panels combine, and increase the usable floor area of light energy board, it can be more in the good weather collection of illumination
Luminous energy is further converted to electric energy storage, will not cause to power off or power unstable problem because of weather reason.
Detailed description of the invention
Fig. 1 show the schematic diagram of the optical energy streetlamp structure of the utility model；
Fig. 2 show the partial structural diagram in the hollow lamp stand of the utility model.
Label declaration: 1, headlamp；2, strut；3, hollow lamp stand；31, orbitron；32, sliding block；33, metal plate；4, method
Blue disk；5, light energy board；51, solar panels.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is:
It please refers to shown in Fig. 1 and Fig. 2, a kind of optical energy streetlamp convenient for protecting light energy board of the utility model, including illumination
Lamp 1, strut 2, hollow lamp stand 3, ring flange 4, light energy board 5, charging-discharging controller and battery；Described strut one end and hollow lamp
Bar 3 connects the other end and connect with headlamp 1, and the hollow lamp stand 3 is connect with ring flange 4, and the ring flange 4 is fixed on ground
On；The bottom that the charging-discharging controller and battery are electrically connected and are arranged in hollow lamp stand 3, the light energy board are arranged in
In empty lamp stand 3；
Orbitron 31, sliding block 32 and metal plate 33 are additionally provided in the hollow lamp stand, the hollow lamp stand 3 is open at one end；
The orbitron 31 is connect with the inner wall of hollow lamp stand 3, and the sliding block 32 is slidably connected with orbitron 31, and the light energy board 5 is
Folding structure is made of multiple solar panels 51, and one end of first piece of solar panels 51 of the light energy board 5 is fixed on track
It is electrically connected on pipe 31 and with charging-discharging controller, the other end is connect with second piece of solar panels 51, the light energy board 5 and sliding block 32
Connection, last block solar panels 51 of the light energy board 5 are connect with one end of metal plate 33, and the other end of metal plate 33 is fixed
In 3 in hollow lamp stand, the metal plate 33 is connect with sliding block 32.
The working principle of the utility model are as follows: push metal plate 33, metal plate 33 passes through the cunning being arranged on orbitron 31
Block 32, to the interior Slideslip of hollow lamp stand 3, one end of metal plate 33 is connect with last block solar panels of light energy board 5, luminous energy
Plate 5 is connect with sliding block 32, and under the drive of metal plate 33, the light energy board 5 under folded state is as the sliding of sliding block 32 is in track
It is unfolded on pipe, forms the light energy board of a monolith in hollow 3 opening of lamp stand, when the sun sets or external environment is bad, push
The solar panels of light energy board 5 are folded, are accommodated in hollow lamp stand 3 by the drive of sliding block 32 by light energy board 5, and metal plate 33
Under the drive of light energy board 5, as the sliding of sliding block 32 is on the orbitron 31 for sliding into hollow 3 opening of lamp stand, one is formed
The hollow lamp stand 3 of a closure.
As can be seen from the above description, the utility model has the beneficial effects that: light energy board is made of multiple solar panels
Folding structure can be connect according to the solar panels for the size setting different number that hollow lamp stand is open, light energy board with sliding block,
Make light energy board when not in use can folding storage in hollow lamp stand, while last block solar panels and metal of light energy board
Plate connection, metal plate is connect with sliding block, and when light energy board folding storage is in hollow lamp stand, metal plate can be with the cunning of sliding block
It is dynamic, it slides on the orbitron of hollow lamp stand opening, forms the hollow lamp stand of a closure, can be effectively avoided long-term sudden and violent
It is exposed at the extraneous aging and damage for causing solar panels, increases the service life of solar panels, the combination of muti-piece solar panels increases
The big usable floor area of light energy board, can be further converted to electric energy storage in the more luminous energy of the good weather collection of illumination,
It will not cause to power off or power unstable problem because of weather reason.
Further, two identical orbitrons 31 up and down are set in the hollow lamp stand 3.
As can be seen from the above description, two orbitrons up and down are arranged, light energy board and gold can be made when hollow lamp stand opening is longer
The connection for belonging to plate and sliding block is stronger, is not easy offset track, is easier to sliding control.
Further, the orbitron 31 is circular rails deferent.
As can be seen from the above description, lamp stand on the market is mostly cylinder, cooperates the shape of lamp stand itself, orbitron is arranged
Agree with metal plate and the opening of light energy board and hollow lamp stand for circular rails deferent conducive to the sliding of sliding block.
Further, the metal plate 33 is arc sheetmetal and radian is identical as the radian of hollow 3 opening of lamp stand.
As can be seen from the above description, lamp stand on the market is mostly cylinder, cooperates the shape of lamp stand itself, metal plate is arranged
For arc sheetmetal, while the radian of arc sheetmetal is identical as the radian of hollow lamp stand opening, guarantees that metal plate can be with
Hollow lamp stand opening is agreed with, and environmental contaminants is prevented to enter in hollow lamp stand.
Further, the solar panels 51 are hinged between any two.
As can be seen from the above description, solar panels hingedly enable multiple solar panels to link together between any two, together
When be foldable to the lesser entirety of volume again, convenient for being accommodated in hollow lamp stand.
Further, the outer wall of described 3 opening one end of hollow lamp stand be equipped with Button Block, the metal plate and solar panels
One end of connection is equipped with hasp, and the Button Block can connect to form hasp lock with hasp.
As can be seen from the above description, when metal plate is moved to hollow lamp stand opening, it can be by Button Block and hasp, it will be golden
Belong to plate to be locked on hollow lamp stand, prevents artificial or other factors from damaging to the other component in hollow lamp stand.
Further, the lower half of hollow lamp stand is arranged in the hollow lamp stand opening.
As can be seen from the above description, the lower half that hollow lamp stand is arranged in hollow lamp stand opening is conducive to carry out solar panels
Cleaning also avoids risk existing for high altitude operation, ensure that the safety of operating personnel.
It please refers to shown in Fig. 1 and Fig. 2, the embodiments of the present invention one are as follows:
A kind of optical energy streetlamp convenient for protecting light energy board, including headlamp 1, strut 2, hollow lamp stand 3, ring flange 4, luminous energy
Plate 5, charging-discharging controller and battery；Described 2 one end of strut connect the other end with hollow lamp stand 3 and connect with headlamp 1, described
3 high 6.1 meters of hollow lamp stand, back cut diameter are 0.7 meter, and lower port diameter is 1.26 meters, and the hollow lamp stand 3 is connect with ring flange 4,
The ring flange 4 is fixed on ground；The charging-discharging controller and battery are electrically connected and are set to hollow 3 bottom of lamp stand,
The light energy board 5 is arranged in hollow lamp stand 3；
Orbitron 31, sliding block 32 and metal plate 33 are additionally provided in the hollow lamp stand 3, the orbitron 31 is by upper and lower two
Identical circular rails deferent 31 forms, and the sliding block 32 is slidably connected with orbitron 31, hollow 3 Souteern Exposure of lamp stand
Open at one end, for the open lower side apart from 1.5 meters of ground, open height is 1 meter, and opening bottom edge lengths are 0.8 meter；The light
Can plate be made of 10 pieces wide 0.1 meter high 1.1 meters of solar panels, wherein first piece of solar panels one end be fixed on orbitron and
It is electrically connected with charging-discharging controller, the other end is connected with second piece of solar panels 51, and the solar panels 51 of the light energy board are two-by-two
Between it is hinged, last block solar panels 51 of the light energy board 5 connects with one end of metal plate 33, the metal plate 33 and cunning
Block 32 connects.The metal plate is arc sheetmetal and radian is identical as hollow lamp stand.Described 2 opening one end of hollow lamp stand
Outer wall is equipped with Button Block, and the one end of the metal plate 33 connecting with solar panels 51 is equipped with hasp, and the Button Block can connect with hasp
It connects to form hasp lock.
When sunlight irradiation is sufficient, metal plate 33 is pushed, metal plate 33 passes through the cunning being arranged on upper and lower circular rails deferent 31
Block 32, to the interior Slideslip of hollow lamp stand 3, one end of metal plate 33 is connect with last block solar panels of light energy board 5, luminous energy
Plate 5 is connect with the sliding block 32 being arranged on upper and lower circular rails deferent 31, the luminous energy under the drive of metal plate 33, under folded state
Plate 5 is unfolded on orbitron 31 with the sliding of sliding block 32, forms the light energy board of a monolith, luminous energy in hollow 3 opening of lamp stand
Plate 5 absorbs luminous energy under irradiation by sunlight, and luminous energy is converted to electric energy.When the sun sets or external environment is bad, light is pushed
Energy plate 5, the solar panels 51 of light energy board 5 are folded, and the drive for passing through the sliding block 32 being arranged on upper and lower circular rails deferent 31 is received
It is contained in hollow lamp stand 3, and metal plate 33 is under the drive of light energy board 5, with the cunning being arranged on upper and lower circular rails deferent 31
The sliding of block 32 slides on the orbitron 31 of hollow 3 opening of lamp stand, the hollow lamp stand 3 of a closure is formed, by metal plate
33 hasp is connect with the Button Block of hollow 3 opening of lamp stand, forms hasp lock, is locked metal plate 33, be moved it can not.
In conclusion a kind of optical energy streetlamp convenient for protecting light energy board provided by the utility model, light energy board are by multiple
The folding structure of solar panels composition, light energy board connect with sliding block, make light energy board when not in use can folding storage in
In empty lamp stand, while last block solar panels of light energy board are connect with metal plate, and metal plate is connect with sliding block, when light energy board is rolled over
When overlapping is contained in hollow lamp stand, metal plate can slide on the orbitron of hollow lamp stand opening, together with the sliding of sliding block
When metal plate on hasp can be connect with the Button Block of hollow lamp stand opening outer wall, form the hollow lamp stand of a closure, can be with
It is effectively prevented from and is chronically exposed to the extraneous aging and damage for causing solar panels, increase the service life of solar panels, it is more
The combination of block solar panels, increases the usable floor area of light energy board, can be in the more luminous energy of the good weather collection of illumination, into one
Step is converted into electric energy storage, will not cause to power off or power unstable problem because of weather reason.And hollow lamp stand opening setting
In the lower half of hollow lamp stand, the top of street lamp is set different from prior art solar panels, is convenient for cleaning, strengthens
To the safety guarantee of operating personnel.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (7)
1. a kind of optical energy streetlamp convenient for protecting light energy board, which is characterized in that including headlamp, strut, hollow lamp stand, flange
Disk, light energy board, charging-discharging controller and battery；Described strut one end is connect with hollow lamp stand, and the other end is connect with headlamp,
The hollow lamp stand is connect with ring flange, and the ring flange is fixed on ground；The charging-discharging controller and battery are electrically connected
The bottom in hollow lamp stand is connect and is arranged in, the light energy board is arranged in hollow lamp stand；
Orbitron, sliding block and metal plate are additionally provided in the hollow lamp stand, the hollow lamp stand is open at one end；The orbitron with
Hollow lamp stand inner wall connection, the sliding block are slidably connected with orbitron, and the light energy board is for folding structure and by multiple sun
Energy board group is at one end of first piece of solar panels of the light energy board is fixed on orbitron and is electrically connected with charging-discharging controller
It connects, the other end is connect with second piece of solar panels, and the light energy board is connect with sliding block, last block solar energy of the light energy board
The connection of one end of plate and metal plate, the other end of the metal plate are fixed in hollow lamp stand, and the metal plate is connect with sliding block.
2. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that set in the hollow lamp stand
Set two identical orbitrons up and down.
3. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that the orbitron is annular
Orbitron.
4. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that the metal plate is arc
Metal plate and radian is identical as hollow lamp stand.
5. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that the solar panels are two-by-two
Between it is hinged.
6. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that the hollow lamp stand opening
The outer wall for locating one end is equipped with Button Block, and one end that the metal plate is connect with solar panels is equipped with hasp, and the Button Block can be with hasp
Connection forms hasp lock.
7. the optical energy streetlamp according to claim 1 convenient for protection light energy board, which is characterized in that the hollow lamp stand opening
The lower half of hollow lamp stand is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254742.7U CN208418524U (en) | 2018-08-06 | 2018-08-06 | A kind of optical energy streetlamp convenient for protecting light energy board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254742.7U CN208418524U (en) | 2018-08-06 | 2018-08-06 | A kind of optical energy streetlamp convenient for protecting light energy board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208418524U true CN208418524U (en) | 2019-01-22 |
Family
ID=65121530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821254742.7U Expired - Fee Related CN208418524U (en) | 2018-08-06 | 2018-08-06 | A kind of optical energy streetlamp convenient for protecting light energy board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208418524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032646A (en) * | 2020-08-24 | 2020-12-04 | 和鸿电气股份有限公司 | Wisdom lighting device based on construction of wisdom city |
-
2018
- 2018-08-06 CN CN201821254742.7U patent/CN208418524U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032646A (en) * | 2020-08-24 | 2020-12-04 | 和鸿电气股份有限公司 | Wisdom lighting device based on construction of wisdom city |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103115311A (en) | Solar lawn light with mobile phone charging function | |
| CN201255350Y (en) | Scene complementation intelligent street lamp | |
| CN204345504U (en) | The street lamp umbrella that a kind of intelligence is dual-purpose | |
| CN205079164U (en) | Solar street lamp with haze monitor function | |
| CN208418524U (en) | A kind of optical energy streetlamp convenient for protecting light energy board | |
| CN206176204U (en) | Solar street lamp that can whether have traffic article automatically regulated light intensity according to road surface | |
| CN204962584U (en) | Multifunctional solar street lamp | |
| CN201536270U (en) | Combined power supply and billboard with the same | |
| CN204577908U (en) | A kind of outdoor warning transformer station | |
| CN208579269U (en) | A kind of wind power generation type rechargeable type street lamp using lithium battery energy storage battery | |
| CN204460067U (en) | A kind of new type solar energy street lamp | |
| CN206280904U (en) | A kind of solar street light | |
| CN202253320U (en) | Wind-light energy complementation concentration power supply road lamp system | |
| CN201655217U (en) | Solar energy LED advertising light box | |
| CN204730089U (en) | A kind of solar energy both arms street lamp | |
| CN204886383U (en) | Domestic solar energy lighting device | |
| CN203453977U (en) | Energy-saving street lamp applied to university campuses or park zones | |
| CN207065416U (en) | Solar energy electric light | |
| CN208901285U (en) | A kind of solar street light conducive to heat dissipation | |
| CN209130719U (en) | Intelligent solar garden lamp | |
| CN109185803B (en) | Energy-saving environment-friendly LED lamp | |
| CN207179464U (en) | A kind of high energy-saving LED road lamp | |
| CN214890876U (en) | Intelligent integrated street lamp taking solar energy as main energy | |
| CN104981068A (en) | Solar household lighting system | |
| CN205351178U (en) | Novel landscape lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |