CN208241944U - A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp - Google Patents
A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp Download PDFInfo
- Publication number
- CN208241944U CN208241944U CN201820798589.8U CN201820798589U CN208241944U CN 208241944 U CN208241944 U CN 208241944U CN 201820798589 U CN201820798589 U CN 201820798589U CN 208241944 U CN208241944 U CN 208241944U
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- constant
- chip microcontroller
- desk lamp
- digital
- eye
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a kind of double-colored temperature of digital-control type without stroboscopic eye-protecting desk lamp, including constant pressure source, single-chip microcontroller, constant-flow driver, three terminal regulator, touch-switch and LED module, the three terminal regulator connects single-chip microcontroller, for providing the operating voltage of single-chip microcontroller, the touch-switch connects single-chip microcontroller, signal for control single chip computer exports, and the single-chip microcontroller connects LED module by constant-flow driver, and the constant pressure source is the working power of eye-protecting desk lamp.Using single-chip microcontroller Digital Control, guarantees that the duty ratio of constant-current pulse is 100%, can not only accomplish entirely without stroboscopic, but also can accomplish that light decay is small, long service life, while different-colour can be adjusted according to Various Seasonal, to increase the comfort level of light source.
Description
Technical field
The utility model relates to technical field of LED illumination more particularly to a kind of double-colored temperature of digital-control type without stroboscopic eye-protecting desk lamp.
Background technique
It is well known that LED belongs to current sensitivity original part, therefore cannot directly it be driven using constant pressure source, because of constant pressure
The working principle in source is: when the resistance of load end becomes smaller, it exports electric current and can become larger, to keep the constant of its output voltage.
LED makes its internal resistance become smaller due to junction temperature raising in use, and when the electric current for flowing through itself being caused to become larger, constant pressure source can be defeated
Bigger electric current keeps the constant of output voltage out, this process can accelerate the light decay of LED.Therefore LED must use constant current
Source drives, but also there are two problems for constant-current source, first is that the output voltage of constant-current source is unstable, it can be with output end resistance
Variation and change, second is that now most constant-current source using pulse width modulation mode progress electric current adjustment, work as duty ratio
When not being 100%, the electric current for flowing through LED is actually a pulsating current, most of using permanent just because of the two reasons
All there is a degree of stroboscopic problem in the LED lamp of stream source driving.In conclusion the LED of drive of constant voltage source is not easy to occur
Stroboscopic, but light decay is big, and service life is short；The LED light of constant-current source driving declines small, long service life, but is easy to appear stroboscopic.From electricity
From the point of view of the self-view of source, constant pressure source reliability is more many than constant-current source high reliablity, and 70% or more LED lamp failure is all according to statistics
Constant-current source failure.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of double-colored temperature of digital-control type without stroboscopic eye-protecting desk lamp, both may be used
Accomplish entirely without stroboscopic, and can accomplish that light decay is small, long service life, while different-colour can be adjusted according to Various Seasonal, to increase
Add the comfort level of light source.
A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp, including constant pressure source, single-chip microcontroller, constant-flow driver, three-terminal voltage-stabilizing
Device, touch-switch and LED module, the three terminal regulator connect single-chip microcontroller, described light for providing the operating voltage of single-chip microcontroller
Touching switch connection single-chip microcontroller, the signal for control single chip computer export, and the single-chip microcontroller is connect with constant-flow driver, constant current driving
Device connection is connected with LED module, and the constant pressure source is the working power of eye-protecting desk lamp.
In above scheme, the constant-flow driver is dual output constant-flow driver, including 2 bit shift registers, 2 latches
Device and 2 constant-flow drivers, 2 bit shift register, 2 latch and 2 constant-flow drivers are sequentially connected.
In above scheme, the LED module is two groups, and one group of colour temperature is 5600K, and another group of colour temperature is 3200K.
Compared with prior art the utility model has the following beneficial effects: 1, using constant pressure source guarantee output voltage stabilization, mention
The high reliability of power supply；2, using constant-flow driver, guarantee the constant of LED module operating current；3, using single-chip microcontroller number
Change control, guarantees that the duty ratio of constant-current pulse is 100%, can not only accomplish entirely without stroboscopic, but also can accomplish that light decay is small, service life
It is long, while different-colour can be adjusted according to Various Seasonal, to increase the comfort level of light source.
Detailed description of the invention
Fig. 1 is functional block diagram of the double-colored temperature of the utility model digital-control type without stroboscopic eye-protecting desk lamp.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp, including constant pressure source, single-chip microcontroller, constant current driving
Device, three terminal regulator, touch-switch and LED module.Three terminal regulator connects single-chip microcontroller, for providing the work electricity of single-chip microcontroller
Pressure.Touch-switch connects single-chip microcontroller, and the signal for control single chip computer exports.Single-chip microcontroller connects constant-flow driver, constant current driving
Device is serially connected in the circuit of double-colored temperature LED module, controls constant-flow driver using single-chip microcontroller, guarantees that the duty ratio of output pulse is
100%.Working power of the constant pressure source as eye-protecting desk lamp guarantees output voltage stabilization, improves the reliability of power supply.
Constant-flow driver is serially connected in LED module circuit, plays constant LED module operating current.Constant-flow driver
For dual output constant-flow driver, it is made of 2 bit shift registers, 2 latch and 2 high precision constant current drivers.In list
Under the action of piece machine exports clock pulses, the digital signal programmed in single-chip microcontroller moves into constant current with the way of output of connecting one by one and drives
In 2 bit shift registers inside dynamic device, then under the latch signal effect of single-chip microcontroller output, while being latching to constant current driving
In 2 latch inside device, finally under the enable signal effect of single-chip microcontroller output, while triggering inside constant-flow driver
2 high precision constant current driver work.Constant-flow driver output size of current is not influenced by its both end voltage variation, only by monolithic
The digital signal pulsewidth of machine output determines.According to loop current law it is found that flowing through each device in a series loop
Electric current be it is equal, similarly, if the electric current for flowing through constant-flow driver is invariable, flow through double-colored temperature connected in series
The electric current of LED module is also invariable.
Constant-flow driver is dual output constant-flow driver, and two-way exports the LED module that can respectively drive two-way different-colour,
The LED module of two-way different-colour can also be driven simultaneously, wherein one group of colour temperature is 5600K, and another group of colour temperature is 3200K.
The control signal output of single-chip microcontroller is completed by touch-switch, is often touched and is once successively controlled desk lamp: " opening (high color
Temperature)-centre colour temperature-low color temperature-pass ", circulation pattern.
Above embodiments are only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is all according to the utility model proposes technical idea, be made any change, each falls within this reality on the basis of technical solutions
With in novel protected range.
Claims (3)
1. a kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp, it is characterised in that: including constant pressure source, single-chip microcontroller, constant-flow driver,
Three terminal regulator, touch-switch and LED module, the three terminal regulator connect single-chip microcontroller, for providing the work electricity of single-chip microcontroller
Pressure, the touch-switch connect single-chip microcontroller, and the signal for control single chip computer exports, and the single-chip microcontroller and constant-flow driver connect
It connects, constant-flow driver is connected with LED module, and the constant pressure source is the working power of eye-protecting desk lamp.
2. the double-colored temperature of digital-control type as described in claim 1 is without stroboscopic eye-protecting desk lamp, it is characterised in that: the constant-flow driver is
Dual output constant-flow driver, including 2 bit shift registers, 2 latch and 2 constant-flow drivers, the 2 bit shift deposit
Device, 2 latch and 2 constant-flow drivers are sequentially connected.
3. the double-colored temperature of digital-control type as described in claim 1 is without stroboscopic eye-protecting desk lamp, it is characterised in that: the LED module is two
Group, one group of colour temperature are 5600K, and another group of colour temperature is 3200K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798589.8U CN208241944U (en) | 2018-05-28 | 2018-05-28 | A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798589.8U CN208241944U (en) | 2018-05-28 | 2018-05-28 | A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241944U true CN208241944U (en) | 2018-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820798589.8U Expired - Fee Related CN208241944U (en) | 2018-05-28 | 2018-05-28 | A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN208241944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113225873A (en) * | 2021-02-24 | 2021-08-06 | 深圳市海洋王照明工程有限公司 | Control circuit and lamp |
-
2018
- 2018-05-28 CN CN201820798589.8U patent/CN208241944U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113225873A (en) * | 2021-02-24 | 2021-08-06 | 深圳市海洋王照明工程有限公司 | Control circuit and lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 |