CN114033985A - Myopia prevention desk lamp - Google Patents
Myopia prevention desk lamp Download PDFInfo
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- CN114033985A CN114033985A CN202111395005.5A CN202111395005A CN114033985A CN 114033985 A CN114033985 A CN 114033985A CN 202111395005 A CN202111395005 A CN 202111395005A CN 114033985 A CN114033985 A CN 114033985A
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- myopia
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- 208000001491 myopia Diseases 0.000 title claims abstract description 31
- 230000004379 myopia Effects 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 208000003464 asthenopia Diseases 0.000 abstract description 9
- 230000004438 eyesight Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 description 24
- 230000008859 change Effects 0.000 description 15
- 210000003128 head Anatomy 0.000 description 9
- 210000000695 crystalline len Anatomy 0.000 description 5
- 230000004313 glare Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004331 refractive myopia Effects 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 206010052143 Ocular discomfort Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 230000004402 high myopia Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/36—Hoisting or lowering devices, e.g. for maintenance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a myopia-preventing desk lamp, and belongs to the technical field of lamps. A myopia prevention desk lamp comprises a base, a lamp post, a resistor disc, a cord, a through hole, a sliding block, a winding structure and a lighting lamp holder; the interior of the lamp post is of a hollow structure, and the resistance chip is arranged in the lamp post and divides the inner cavity of the lamp post into a left cavity and a right cavity; the through hole is formed in the left side wall of the lamp post and communicated with the left cavity of the lamp post, and a first sliding groove matched with the slider in shape is formed in the inner side wall of the through hole, the inner wall of the lamp post and the resistor disc. It is opening or the moment of closing, is illuminated the region and is lighted or darkened gradually, prevents that the contrast of the extreme luminance that appears in the user field of vision from leading to user's eyes uncomfortable, and can adjust the luminance of desk lamp as required and make the regional light luminance that needs to illuminate accord with user's demand, and then protects user's eyes, reduces the risk that the user leads to myopia because of the uncomfortable production visual fatigue of luminance.
Description
Technical Field
The invention relates to the technical field of lamps, in particular to a myopia-preventing desk lamp.
Background
The myopia is caused by the elongation of the axis of the eye, and is generally called refractive myopia. The refractive myopia refers to a myopia whose axial length is within a normal range and caused by the change of refractive factors such as crystalline lens, and its essence is to emphasize the effect of environmental factors, if the treatment is not timely performed, not only will the approximate degree be continuously deepened, but also the true high myopia is finally formed, which not only will seriously affect the physical and mental health of children, but also has great limitation on the selection of specialty and future employment when children go up to school. Modern medicine has demonstrated that myopia due to acquired factors will also inherit the offspring if not treated in time.
The most important reason is that the eyes are used excessively, the sight line distance is greatly shortened when the user reads and writes or works normally, and meanwhile, the user works or learns for a long time in a place with a dim light line or an excessively bright light line, and the main reason for causing the myopia is also.
Glare refers to the condition of vision in the field of view due to unfavorable luminance distributions, or extreme luminance contrast in space or time, so as to cause visual discomfort and reduce the visibility of objects. The visual field produces a sense of brightness that the human eye cannot adapt to, and may cause aversion, discomfort or even loss of visibility. An excessively high luminance occurs in a local place in the visual field or an excessively large luminance change occurs in front and rear. Glare is one of the important causes of visual fatigue.
The desk lamp has the glare phenomenon in the use process, and easily causes eye fatigue, so that eye diseases, particularly vision fatigue of teenagers, are easily caused by long-term use of the desk lamp with high illumination and overproof glare, and myopia or deepening is caused by long-term fatigue.
When reading and writing, the prior desk lamp has the following defects when illuminating;
(1) when the writing space is too dark, the desk lamp is turned on, the writing space is illuminated instantly, and a user can have a glare phenomenon;
(2) the brightness of the existing desk lamp is adjusted to be only exact, and a user cannot adjust the writing light to a proper position by adjusting the brightness of the desk lamp according to the environment of the writing light.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a myopia-preventing desk lamp, which is characterized in that at the moment of turning on or off, an illuminated area is gradually illuminated or darkened, so that discomfort of eyes of a user due to extreme brightness contrast in the visual field of the user is prevented, the brightness of the desk lamp can be adjusted according to needs, the brightness of light of the area needing to be illuminated meets the requirements of the user, the eyes of the user are protected, and the risk of myopia caused by visual fatigue of the user due to discomfort of the brightness is reduced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A myopia prevention desk lamp comprises a base, a lamp post, a resistor disc, a cord, a through hole, a sliding block, a winding structure and a lighting lamp holder; the interior of the lamp post is of a hollow structure, and the resistance chip is arranged in the lamp post and divides the inner cavity of the lamp post into a left cavity and a right cavity; the through hole is formed in the left side wall of the lamp post and communicated with the left cavity of the lamp post, and a first sliding groove matched with the slider in shape is formed in the inner side wall of the through hole, the inner wall of the lamp post and the resistor disc; one end of the sliding block is connected in the first sliding groove in a sliding manner, and the other end of the sliding block is rotationally connected with the lighting lamp holder; an electrode plate is installed in the sliding block, one end of the electrode plate is electrically connected with the resistance card, and the other end of the electrode plate is electrically connected with the lighting lamp holder; the lamp post is rotationally connected to the base, and the inner cavity of the lamp post is communicated with the inner cavity of the base; a power supply control device is arranged in the base and is electrically connected with the top end of the resistance card; the wire winding structure is arranged in the base, one end of a wire rope is connected with the wire winding structure, and the other end of the wire rope penetrates through the right chamber of the lamp post to be connected with the top end of the sliding block; the lighting lamp cap comprises a light-transmitting plate, iron powder, a first spiral coil, a mounting ring and a lamp panel; the lamp plate is positioned above the light-transmitting plate, and the lamp plate and the light-transmitting plate are both arranged in the mounting ring; the inside of the light-transmitting plate is provided with a hollow cavity, and the iron powder is arranged in the hollow cavity on the light-transmitting plate; the first spiral coil is wound outside the light-transmitting plate; first spiral coil series connection is in the one end that resistance card was kept away from to the electrode slice and lamp plate electric connection's circuit.
Preferably, the wire winding structure comprises a wire winding roller and a motor; the wire take-up stick and the motor are both arranged in the base, the output end of the motor is connected with the wire take-up stick, one end of a cord is wound on the wire take-up stick, and the other end of the cord penetrates through the right cavity of the lamp post to be connected with the top end of the sliding block; the motor drives the take-up roller to rotate to control the length of a cord outside the take-up roller so as to control the position of an electrode plate on the sliding block on the resistor disc, and the light brightness of the lighting lamp holder is controlled by changing the size of a resistor in the control circuit.
Preferably, the lighting head further comprises a lens mounted within the mounting ring and located directly below the light-transmitting panel.
Preferably, the lighting lamp holder further comprises a slide rheostat, a power supply device and a second solenoid coil; the mounting ring is provided with a mounting groove, the slide rheostat and the power supply device are mounted in the mounting groove, and the second spiral coil is wound outside the light-transmitting plate; the slide rheostat, the power supply device and the second spiral coil are sequentially connected in series to form a closed circuit.
Preferably, the top end in the right inner cavity of the lamp pole is provided with a wire supply rope which penetrates through the fixed pulley.
Preferably, a height adjusting assembly is arranged between the lamp post and the base; the height adjusting assembly comprises a connecting rod, a groove and two second sliding grooves; the groove is formed in the top end of the connecting rod, and the bottom end of the lamp post is inserted into the groove; the two second sliding chutes are respectively arranged on the front inner side wall and the rear inner side wall of the groove; the lamp post is provided with a moving post which slides along the second sliding groove; one end of the movable column, which is far away from the lamp post, is provided with an elastic piece which can move along the length direction of the movable column; a plurality of holes for the elastic pieces to pass through are formed in the two opposite side walls of the two second sliding grooves along the longitudinal direction; the double-head winder is arranged in the base; the power control device is electrically connected with the top end of the resistance card through an electric wire, and the electric wire is wound on the double-head winder.
Preferably, the front inner side wall and the rear inner side wall of the groove are both provided with inverted-L-shaped third sliding chutes; the third spout is located the second spout left side, and the third spout is linked together with the second spout, and the removal post on the lamp pole moves to the third spout along the second spout in, and the lamp pole can be folded around removing post anticlockwise rotation.
Preferably, the width of the moving column, the third sliding groove and the second sliding groove is equal.
Preferably, the outer surface of the lamp panel is coated with a transparent anti-magnetic interference film.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the invention, through the arrangement of the first spiral coil, the light-transmitting plate and the iron powder, the current in the first spiral coil is gradually increased, the magnetic induction intensity formed inside the first spiral coil is gradually increased, the iron powder is gathered together under the change of the magnetic force intensity, the stronger the magnetic induction intensity is, the denser the iron powder is, the larger the blank area left on the light-transmitting plate is, the stronger the light-transmitting intensity of the light-transmitting plate is, the light-transmitting intensity of the light-transmitting plate is adjusted through the current in the first spiral coil, so that the illuminated area is gradually illuminated or darkened at the moment of opening or closing the desk lamp, the discomfort of eyes of a user caused by the extreme brightness contrast in the visual field of the user is prevented, and the risk of myopia caused by visual fatigue of the user caused by the uncomfortable brightness is reduced.
(2) According to the invention, through the arrangement of the sliding rheostat, the power supply device and the second spiral coil, after the desk lamp is turned on, the magnetic induction intensity of the light-transmitting plate area is changed by changing the current magnitude and the current direction of the second spiral coil, iron powder in the light-transmitting plate is gathered together under the change of the magnetic force intensity, the stronger the magnetic induction intensity is, the denser the iron powder is, the larger a blank area is left on the light-transmitting plate, so that the stronger the light-transmitting intensity of the light-transmitting plate is, a user can adjust the brightness of the desk lamp according to the requirement, so that the brightness of the light in the area needing to be illuminated meets the requirement of the user, the eyes of the user are protected, and the risk of myopia caused by visual fatigue of the user due to the discomfort of the brightness is reduced.
(3) According to the invention, through the arrangement of the wire collecting rod, the motor, the lighting lamp holder, the resistor disc, the electrode plate, the sliding block, the light-transmitting plate, the iron powder and the first spiral coil, the lighting lamp holder gradually becomes bright or dark at the moment of starting or closing the desk lamp, when the output end of the motor drives the wire collecting rod to rotate, the length of a wire rope positioned outside the wire collecting rod is gradually shortened, the sliding block connected with the lighting lamp holder gradually moves upwards under the driving of the wire rope, the electrode plate on the sliding block also gradually moves upwards, the resistance value in the control circuit gradually becomes small, the current in the circuit gradually becomes large, the lamp plate gradually becomes bright, the light-transmitting strength of the light-transmitting plate gradually becomes large, and the irradiated area of the lighting lamp holder gradually becomes bright; the output of motor drives and receives the line rod and rotates, make the cotton rope length that is located outside receiving the line rod lengthen gradually, slider connected with the lighting lamp holder is the downstream gradually under the drive of gravity, electrode slice on the slider also moves down gradually, resistance value among the control circuit grow gradually, electric current in the circuit diminishes gradually, lamp plate luminance darkens gradually, and electric current through in the first spiral coil diminishes gradually, the printing opacity intensity of light-passing board is little less gradually, and then make the desk lamp open or the moment of closing, it is luminous or darkened gradually to be illuminated the region, prevent that the contrast of extreme luminance from appearing in the user's field of vision from leading to user's eye uncomfortable, reduce the user and produce the tired risk that leads to myopia because of luminance discomfort.
(4) According to the invention, through the arrangement of the two second sliding grooves, the moving column, the elastic piece and the plurality of holes, the height of the lighting lamp head can be conveniently adjusted, and the irradiation range of the lighting lamp head can be further adjusted.
(5) According to the folding desk lamp, the movable column on the lamp post moves into the third sliding groove along the second sliding groove through the arrangement of the third sliding groove, and the lamp post can rotate anticlockwise around the movable column to be folded, so that the folding desk lamp is folded, and the desk lamp is convenient to store.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic diagram of the structure at A in FIG. 2 according to the present invention;
FIG. 4 is a schematic view of a folded configuration of the present invention;
FIG. 5 is a schematic top view of the folding structure of the present invention;
FIG. 6 is a schematic structural view of a light pole of the present invention;
FIG. 7 is a schematic structural view of the height adjustment assembly of the present invention;
FIG. 8 is a cross-sectional structural schematic view of the lighting head of the present invention;
fig. 9 is a schematic cross-sectional structure of the present invention.
The reference numbers in the figures illustrate:
the lamp comprises a base 1, a lamp post 2, a resistor disc 3, a 4 cord, a 5 through hole, a 6 sliding block, a 7 take-up stick, a 8 motor, a 9 light-transmitting plate, 10 iron powder, a 11 first spiral coil, a 12 second spiral coil, a 13 lamp panel, a 14 mounting ring, a 15 lens, a 16 pulley, a 17 height adjusting component, a 171 connecting rod, a 172 groove, a 173 second sliding groove, a 174 hole, a 175 third sliding groove, an 18 moving column, a 19 elastic part, a 20 lighting lamp holder and a 21 first sliding groove.
Detailed Description
Referring to fig. 1-9, the myopia prevention desk lamp includes a base 1, a lamp post 2, a resistor disc 3, a cord 4, a through hole 5, a slider 6, a winding structure and a lighting lamp head 20; the interior of the lamp post 2 is of a hollow structure, and the resistance chip 3 is arranged in the lamp post 2 and divides the inner cavity of the lamp post 2 into a left cavity and a right cavity; the through hole 5 is formed in the left side wall of the lamp post 2 and communicated with the left cavity of the lamp post 2, and a first sliding groove 21 matched with the slider 6 in shape is formed by the inner side wall of the through hole 5, the inner wall of the lamp post 2 and the resistor disc 3; one end of the sliding block 6 is connected in the first sliding groove 21 in a sliding manner, and the other end of the sliding block 6 is rotationally connected with the lighting lamp holder 20; an electrode plate is installed in the slider 6, one end of the electrode plate is electrically connected with the resistance chip 3, and the other end of the electrode plate is electrically connected with the lighting lamp holder 20; the lamp post 2 is rotatably connected to the base 1, and the inner cavity of the lamp post 2 is communicated with the inner cavity of the base 1; a power supply control device is arranged in the base 1, the power supply control device is electrically connected with the top end of the resistance chip 3, and the voltage of the power supply control device is constant; the winding structure is arranged in the base 1, one end of the cord 4 is connected with the winding structure, and the other end of the cord passes through the right chamber of the lamp post 2 and is connected with the top end of the sliding block 6; the lighting lamp holder 20 comprises a light-transmitting plate 9, iron powder 10, a first spiral coil 11, a mounting ring 14 and a lamp panel 13; the lamp panel 13 is positioned above the light-transmitting plate 9, and both the lamp panel 13 and the light-transmitting plate 9 are arranged in the mounting ring 14; a hollow cavity is arranged in the light-transmitting plate 9, the iron powder 10 is arranged in the hollow cavity on the light-transmitting plate 9, and the iron powder 10 is flatly laid in the hollow cavity of the light-transmitting plate 9; the first spiral coil 11 is wound outside the light-transmitting plate 9; first spiral coil 11 series connection is in the electrode slice keep away from the one end of resistance card 3 and lamp plate 13 electric connection's circuit.
The winding structure comprises a winding roller 7 and a motor 8; the take-up roller 7 and the motor 8 are both arranged in the base 1, the output end of the motor 8 is connected with the take-up roller 7, one end of the cord 4 is wound on the take-up roller 7, and the other end of the cord passes through the right cavity of the lamp post 2 and is connected with the top end of the sliding block 6; the motor 8 controls the length of the cord 4 outside the take-up roller 7 by driving the take-up roller 7 to control the position of the electrode plate on the sliding block 6 on the resistor disc 3, and the light brightness of the lighting lamp holder is controlled by changing the resistance in the control circuit.
The motor 8 is a motor rotating in forward and reverse directions, the desk lamp is turned on, the motor 8 is started, when the output end of the motor 8 drives the take-up roller 7 to rotate, the length of the cord 4 positioned outside the take-up roller 7 is gradually shortened, the slide block 6 connected with the lighting lamp holder 20 is gradually moved upwards under the driving of the cord 4, the electrode plate on the slide block 6 is also gradually moved upwards, the resistance value in the control circuit is gradually reduced, the current in the circuit is gradually increased, the brightness of the lamp panel 13 is gradually lightened, the magnetic induction intensity formed inside the first spiral coil 11 is gradually strengthened through the gradual increase of the current in the first spiral coil 11, the iron powder 10 is gathered together under the change of the magnetic intensity, the stronger the magnetic induction intensity is, the denser the gathering degree of the iron powder 10 is, the larger the blank area left on the light-transmitting plate 9 is, the stronger the light-transmitting intensity of the light-transmitting plate 9 is further, and the stronger the magnetic induction intensity in the area of the light-transmitting plate 9 is, the stronger the light transmission strength of the light-transmitting plate 9; the output of motor 8 drives receipts line rod 7 and rotates, make 4 length of cotton rope that are located outside receipts line rod 7 grow gradually longer, slider 6 connected with lighting lamp holder 20 moves downwards gradually under the drive of gravity, the electrode slice on slider 6 also moves downwards gradually, the resistance value among the control circuit grow gradually, the electric current in the circuit diminishes gradually, lamp plate 13 luminance darkens gradually, and the electric current through first spiral coil 11 diminishes gradually, the printing opacity intensity of light-passing board 9 is less, and then make the desk lamp in the twinkling of an eye of opening or closing, it is luminous or darkened gradually to be shone the region, it leads to user's eye uncomfortable to prevent that the contrast of extreme luminance from appearing in the user's field of vision to lead to user's eye, reduce the user and produce visual fatigue and lead to near-sighted risk because of the luminance discomfort.
The lighting head 20 further comprises a lens 15, the lens 15 being mounted in the mounting ring 14 and directly below the light-transmitting panel 9.
The lighting lamp head also comprises a slide rheostat, a power supply device and a second solenoid coil 12; the mounting ring 14 is provided with a mounting groove, the slide rheostat and the power supply device are mounted in the mounting groove, and the second solenoid coil 12 is wound outside the light-transmitting plate 9; the sliding rheostat, the power supply device and the second solenoid 12 are sequentially connected in series to form a closed circuit.
After the desk lamp is turned on, the size of the slide rheostat is adjusted, the current passing through the second spiral coil 12 is further adjusted, the current direction is changed, and the magnetic induction intensity of the light transmitting plate area is changed, so that the iron powder 10 is gathered together under the change of the magnetic induction intensity in the first spiral coil 11 and the second spiral coil 12; the magnetic induction intensity in the light transmission plate 9 area is formed by superposing magnetic field intensity vectors generated by the second spiral coil 12 and the first spiral coil 11; when the current directions of the second spiral coil 12 and the first spiral coil 11 are the same, the slide rheostat is adjusted, the current passing through the second spiral coil 12 is increased, the stronger the magnetic induction intensity of the light-transmitting plate 9 area is, the denser the aggregation degree of the iron powder 10 is, the larger the blank area left on the light-transmitting plate 9 is, the stronger the light-transmitting intensity of the light-transmitting plate 9 is; when the current direction of second spiral coil 12 is opposite with first spiral coil 11, adjust the slide rheostat, make the electric current through second spiral coil 12 increase gradually, make the regional magnetic induction intensity of light-passing board 9 weaker, iron powder 10 degree of aggregation is less intensive more, the blank area that leaves on the light-passing board 9 is less, and then adjust the printing opacity intensity of light-passing board 9, and then change the luminance of illumination lamp holder 20, thereby adjust desk lamp luminance, make the user can adjust the luminance of desk lamp as required and make the regional light luminance that needs to illuminate accord with user's demand, and then protect user's eyes, reduce the risk that the user leads to near-sighted because of the uncomfortable production vision of luminance.
The top end in the right inner chamber of the lamp pole 2 is provided with a rope supply 4 which passes through the fixed pulley 16, so that the abrasion of the rope 4 is reduced.
A height adjusting component 17 is arranged between the lamp post 2 and the base 1; the height adjusting assembly 17 includes a connecting rod 171, a groove 172, and two second sliding grooves 173; the groove 172 is arranged at the top end of the connecting rod 171, and the bottom end of the lamp post 2 is inserted into the groove 172; two second sliding grooves 173 are respectively formed on the front and rear inner side walls of the groove 172; the lamp post 2 is provided with a moving column 18 sliding along the second sliding groove 173; one end of the movable column 18 far away from the lamp post 2 is provided with an elastic piece 19 which can move along the length direction of the movable column 18; two opposite side walls of the two second sliding grooves 173 are respectively provided with a plurality of holes 174 for the elastic element 19 to pass through along the longitudinal direction; the double-head winder is arranged in the base 1; the power control device is electrically connected with the top end of the resistance card 3 through an electric wire, and the electric wire is wound on the double-head winder.
The front inner side wall and the rear inner side wall of the groove 172 are both provided with inverted-L-shaped third sliding grooves 175; the third sliding groove 175 is located on the left side of the second sliding groove 173, the third sliding groove 175 is communicated with the second sliding groove 173, the movable column 18 on the lamp post 2 moves into the third sliding groove 175 along the second sliding groove 173, and the lamp post 2 can rotate counterclockwise around the movable column 18 to be folded.
Folding the desk lamp, the removal post 18 on the lamp pole 2 moves to the third spout 175 along second spout 173 in, and the lamp pole 2 can be folded around removing the 18 anticlockwise rotations of post to realize the folding of desk lamp, conveniently accomodate the desk lamp.
The moving post 18, the third slide groove 175 and the second slide groove 173 have the same width.
The outer surface cladding of lamp plate 13 has transparent anti-magnetic interference membrane, avoids the operation of the electronic components in lamp plate 13 of the magnetic field influence that first spiral coil 11 and second spiral coil 12 produced.
The desk lamp is started, the motor 8 is started, when the output end of the motor 8 drives the take-up roller 7 to rotate, the length of the cord 4 positioned outside the take-up roller 7 is gradually shortened, the slide block 6 connected with the lighting lamp holder 20 is gradually moved upwards under the driving of the cord 4, the electrode plate on the slide block 6 is also gradually moved upwards, the resistance value in the control circuit is gradually reduced, the current in the circuit is gradually increased, the brightness of the lamp plate 13 is gradually lightened, the magnetic induction intensity formed inside the first spiral coil 11 is gradually increased, the iron powder 10 is gathered together due to the change of the magnetic intensity, the magnetic induction intensity is stronger, the gathering degree of the iron powder 10 is denser, the blank area left on the light-transmitting plate 9 is larger, when the magnetic induction intensity formed inside the spiral coil 11 is gradually increased, the light-transmitting intensity of the light-transmitting plate 9 is gradually increased, and the irradiation area of the lighting lamp holder 20 is gradually illuminated, and further make the moment that the desk lamp was opened, the illuminated area is lighted gradually, prevents that the extreme luminance contrast from appearing in the user's field of vision from leading to user's eyes uncomfortable, reduces the user and produces the risk that visual fatigue leads to myopia because of the luminance discomfort.
When the desk lamp is turned off, when the output end of the motor 8 drives the take-up roller 7 to rotate, the length of the cord 4 positioned outside the take-up roller 7 is gradually lengthened, the slide block 6 connected with the lighting lamp holder 20 is gradually moved downwards under the driving of gravity, the electrode plate on the slide block 6 is also gradually moved downwards, the resistance value in the control circuit is gradually increased, the current in the circuit is gradually reduced, the brightness of the lamp panel 13 is gradually darkened, the magnetic induction intensity formed inside the first spiral coil 11 is gradually reduced, the iron powder 10 is gathered together under the change of the magnetic force intensity, the magnetic induction intensity is stronger, the gathering degree of the iron powder 10 is denser, the blank area left on the light-transmitting plate 9 is larger, the iron powder 10 is gradually reduced according to the magnetic induction intensity in the first spiral coil 11, the light-transmitting intensity of the light-transmitting plate 9 is gradually reduced until the lighting lamp holder 20 is dark, and the area irradiated by the lighting lamp holder 20 is gradually darkened, and further make the desk lamp close the moment, the illuminated area is darkened gradually, prevents that the user from appearing the contrast of extreme luminance in the field of vision and leading to user's eyes uncomfortable, reduces the user and produces the risk that visual fatigue leads to myopia because of the luminance discomfort.
Adjust desk lamp luminance, when turning bright desk lamp luminance, when the direction of current through second solenoid 12 is the same, second solenoid 12 is the same with first solenoid 11's magnetic field direction, adjust the slide rheostat, increase the electric current size through second solenoid 12, make the regional magnetic induction intensity grow of light-passing board 9, because iron powder 10 receives the change of magnetic strength, gather together, magnetic induction intensity is stronger, iron powder 10 gathers the degree more densely, the blank area that leaves on the light-passing board 9 is bigger, iron powder 10 is according to the change of the regional magnetic induction intensity of light-passing board 9, adjust the light-passing strength of light-passing board 9, make the light-passing strength grow of light-passing board 9, and then change the luminance of desk lamp.
Carry out the shading with desk lamp luminance, when the current direction through second solenoid 12 is opposite, second solenoid 12 and first solenoid 11's magnetic field direction is opposite, adjust the slide rheostat, the increase is through the electric current size of second solenoid 12, make the magnetic induction intensity in light-passing board 9 region diminish, because iron powder 10 receives the change of magnetic strength, gather together, the magnetic induction intensity is stronger, iron powder 10 degree of gathering is denser, the more big in the blank area that leaves on the light-passing board 9, iron powder 10 is according to the change of magnetic induction intensity, adjust the printing opacity intensity of light-passing board 9, make the printing opacity intensity of light-passing board 9 diminish, and then change the luminance of desk lamp.
The height of the lighting head 20 is adjusted, one hand presses the elastic member 19, so that the elastic member 19 moves to the second sliding groove 173, and the other hand pulls the lamp post 2 upwards or downwards, so that the height of the lighting head 20 can be adjusted.
Folding the desk lamp, the removal post 18 on the lamp pole 2 moves to the third spout 175 along second spout 173 in, and the lamp pole 2 can be folded around removing the 18 anticlockwise rotations of post to realize the folding of desk lamp, conveniently accomodate the desk lamp.
Claims (9)
1. A myopia prevention desk lamp is characterized in that: the lamp comprises a base (1), a lamp post (2), a resistance card (3), a cord (4), a through hole (5), a slider (6), a winding structure and a lighting lamp holder (20);
the interior of the lamp post (2) is of a hollow structure, and the resistance chip (3) is arranged in the lamp post (2) and divides the inner cavity of the lamp post (2) into a left cavity and a right cavity;
the through hole (5) is formed in the left side wall of the lamp post (2) and communicated with the left cavity of the lamp post (2), and a first sliding groove (21) matched with the slider (6) in shape is formed by the inner side wall of the through hole (5), the inner wall of the lamp post (2) and the resistor disc (3);
one end of the sliding block (6) is connected in the first sliding groove (21) in a sliding manner, and the other end of the sliding block (6) is rotationally connected with the lighting lamp holder (20); an electrode plate is installed in the sliding block (6), one end of the electrode plate is electrically connected with the resistance sheet (3), and the other end of the electrode plate is electrically connected with the lighting lamp holder (20); the lamp post (2) is rotatably connected to the base (1), and the inner cavity of the lamp post (2) is communicated with the inner cavity of the base (1); a power supply control device is arranged in the base (1) and is electrically connected with the top end of the resistance chip (3);
the winding structure is arranged in the base (1), one end of the cord (4) is connected with the winding structure, and the other end of the cord passes through the right chamber of the lamp post (2) and is connected with the top end of the sliding block (6);
the lighting lamp holder (20) comprises a light-transmitting plate (9), iron powder (10), a first spiral coil (11), a mounting ring (14) and a lamp plate (13);
the lamp plate (13) is positioned above the light-transmitting plate (9), and the lamp plate (13) and the light-transmitting plate (9) are both arranged in the mounting ring (14); the inside of the light-transmitting plate (9) is a hollow cavity, and the iron powder (10) is arranged in the hollow cavity on the light-transmitting plate (9); the first spiral coil (11) is wound outside the light-transmitting plate (9); first spiral coil (11) series connection is kept away from in the one end of resistance card (3) and lamp plate (13) electric connection's circuit in the electrode slice.
2. The myopia-preventing desk lamp as claimed in claim 1, wherein: the winding structure comprises a winding roller (7) and a motor (8); the take-up roller (7) and the motor (8) are both arranged in the base (1), the output end of the motor (8) is connected with the take-up roller (7), one end of the cord (4) is wound on the take-up roller (7), and the other end of the cord penetrates through the right cavity of the lamp post (2) and is connected with the top end of the sliding block (6);
the motor (8) controls the length of the cord (4) outside the take-up roller (7) by driving the take-up roller (7) to control the position of the electrode plate on the sliding block (6) on the resistor disc (3), and the light brightness of the lighting lamp holder is controlled by changing the resistor size in the control circuit.
3. The myopia-preventing desk lamp as claimed in claim 1, wherein: is characterized in that: the lighting lamp holder (20) further comprises a lens (15), and the lens (15) is installed in the mounting ring (14) and located right below the light-transmitting plate (9).
4. A myopia-preventing desk lamp as claimed in claim 3, wherein: the lighting lamp head also comprises a slide rheostat, a power supply device and a second solenoid coil (12);
the mounting ring (14) is provided with a mounting groove, the sliding rheostat and the power supply device are mounted in the mounting groove, and the second solenoid coil (12) is wound outside the light-transmitting plate (9);
the slide rheostat, the power supply device and the second spiral coil (12) are sequentially connected in series to form a closed circuit.
5. The myopia-preventing desk lamp as claimed in claim 1, wherein: the top end in the right inner chamber of the lamp post (2) is provided with a wire supply rope (4) which passes through the fixed pulley (16).
6. The myopia-preventing desk lamp as claimed in claim 1, wherein: a height adjusting component (17) is arranged between the lamp post (2) and the base (1);
the height adjusting assembly (17) comprises a connecting rod (171), a groove (172) and two second sliding grooves (173);
the groove (172) is formed in the top end of the connecting rod (171), and the bottom end of the lamp post (2) is inserted into the groove (172);
the two second sliding chutes (173) are respectively arranged on the front inner side wall and the rear inner side wall of the groove (172);
the lamp post (2) is provided with a movable post (18) which slides along the second sliding groove (173);
one end of the movable column (18) far away from the lamp post (2) is provided with an elastic piece (19) which can move along the length direction of the movable column (18);
a plurality of holes (174) for the elastic pieces (19) to pass through are formed in the two opposite side walls of the two second sliding grooves (173) along the longitudinal direction;
the double-head winder is arranged in the base (1);
the power supply control device is electrically connected with the top end of the resistance card (3) through an electric wire, and the electric wire is wound on the double-head winder.
7. The myopia-preventing desk lamp as claimed in claim 6, wherein: the front inner side wall and the rear inner side wall of the groove (172) are both provided with inverted-L-shaped third sliding chutes (175); the third sliding groove (175) is located on the left side of the second sliding groove (173), the third sliding groove (175) is communicated with the second sliding groove (173), the movable column (18) on the lamp post (2) moves into the third sliding groove (175) along the second sliding groove (173), and the lamp post (2) can rotate anticlockwise around the movable column (18) to be folded.
8. The myopia-preventing desk lamp as claimed in claim 7, wherein: the widths of the moving column (18), the third sliding groove (175) and the second sliding groove (173) are equal.
9. The myopia-preventing desk lamp as claimed in claim 1, wherein: the outer surface of the lamp panel (13) is coated with a transparent anti-magnetic interference film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395005.5A CN114033985B (en) | 2021-11-23 | 2021-11-23 | Myopia prevention desk lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111395005.5A CN114033985B (en) | 2021-11-23 | 2021-11-23 | Myopia prevention desk lamp |
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| CN114033985A true CN114033985A (en) | 2022-02-11 |
| CN114033985B CN114033985B (en) | 2023-11-21 |
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| CN114033985B (en) | 2023-11-21 |
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