CN107682956A - A kind of light fixture with fan - Google Patents
A kind of light fixture with fan Download PDFInfo
- Publication number
- CN107682956A CN107682956A CN201710942802.8A CN201710942802A CN107682956A CN 107682956 A CN107682956 A CN 107682956A CN 201710942802 A CN201710942802 A CN 201710942802A CN 107682956 A CN107682956 A CN 107682956A
- Authority
- CN
- China
- Prior art keywords
- fan
- lamp bead
- led lamp
- group
- parallel
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention discloses a kind of light fixture with fan, including：LED constant current driving power, fan and multigroup LED lamp bead group being serially connected；The LED constant current driving power is electrically connected and is used for LED lamp bead group powers for the LED lamp bead group；The fan is in parallel with any LED lamp bead group, and the LED lamp bead group in parallel with the fan is reduced to the fan by voltage and powered.It using the present invention, can effectively simplify drive circuit, reduce process costs, save space.
Description
Technical field
The present invention relates to lighting technical field, more particularly to a kind of light fixture with fan.
Background technology
Bulb lamp is the Novel energy-saving lamp for substituting conventional incandescent bulb.Conventional incandescent (tengsten lamp) power consumption is high, the life-span
It is short, under the nervous overall situation of global resources, forbid producing by national governments gradually, substitute products are electric energy-savings therewith
Lamp, although electronic energy-saving lamp improves energy-saving effect, but due to having used the heavy metal element of many pollution environment, run counter to again
The main trend of environmental protection.As the high speed development LED illumination of LED technology is increasingly becoming the only choosing of novel green illumination.
Generally require to design two sets of drive circuits in existing bulb lamp, wherein, a set of drive circuit is used for in bulb lamp
LED lamp bead power supply, another set of drive circuit is used to power (referring to Fig. 1 and Fig. 2) for fan, therefore, existing bulb lamp electricity
Road is complicated, and process costs are higher, wasting space.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of light fixture simple in construction, with fan, can be effectively simple
Change drive circuit, reduce process costs, save space.
In order to solve the above-mentioned technical problem, the invention provides a kind of light fixture with fan, including：LED constant current driving electricity
Source, fan and multigroup LED lamp bead group being serially connected；The LED constant current driving power is electrically connected and is used for LED lamp bead group
The LED lamp bead group power supply；The fan is in parallel with any LED lamp bead group, and the LED lamp bead group in parallel with the fan passes through electricity
Pressure drop is powered for the fan.
As the improvement of such scheme, the voltage drop of LED lamp bead group in parallel with the fan and the operating voltage of fan
It is identical.
As the improvement of such scheme, every group of LED lamp bead group includes multiple LED lamp beads parallel with one another.
As the improvement of such scheme, the light fixture with fan also includes voltage-regulator diode, the voltage-regulator diode with
Fan is in parallel.
As the improvement of such scheme, the light fixture with fan also includes current-limiting resistance group, the current-limiting resistance group with
It is in parallel with any LED lamp bead group after fan series connection.
As the improvement of such scheme, the current-limiting resistance group includes multiple current-limiting resistances parallel with one another.
As the improvement of such scheme, the light fixture with fan also includes being used to monitor LED lamp bead operating temperature in real time
Paster thermistor, the paster thermistor one end connection LED lamp bead group negative pole, the other end connection LED constant current drive
Dynamic power supply.
Implement the present invention, have the advantages that：
The present invention is in parallel with LED lamp bead group by fan, and fan is powered using the voltage drop of LED lamp bead group, because
This need not be the constant voltage drive circuit of fan design independence, can effectively simplify drive circuit, reduce process costs, save
Space.Meanwhile fan is connected with other LED lamp bead groups again with after LED lamp bead group parallel connection in the present invention, makes LED lamp bead below
Group can normal luminous.
The present invention carries out over-voltage clamping protection using voltage-regulator diode to fan.
The present invention flows through the maximum current of fan by the regulation of current-limiting resistance group, so as to limit the maximum current of fan, protects
Card fan will not damage because of high current.
The present invention monitors LED lamp bead operating temperature by paster thermistor in real time, realizes that overheat protector point is advantageous to protect
Hinder product reliability.
Brief description of the drawings
Fig. 1 is the circuit diagram of BUCK constant pressures Switching Power Supply in existing light fixture；
Fig. 2 is the circuit diagram of transformer assists winding+LDO power supplys in existing light fixture；
Fig. 3 is the first embodiment circuit diagram of the light fixture of the invention with fan；
Fig. 4 is the circuit theory diagrams of LED constant current driving power in the light fixture of the invention with fan；
Fig. 5 is the second embodiment circuit diagram of the light fixture of the invention with fan；
Fig. 6 is the 3rd embodiment circuit diagram of the light fixture of the invention with fan；
Fig. 7 is the fourth embodiment circuit diagram of the light fixture of the invention with fan.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
It is described in detail on step ground.Only this is stated, appearance in the text of the invention or the side such as the up, down, left, right, before and after that will appear from, inside and outside
Position word, only on the basis of the accompanying drawing of the present invention, it is not the specific restriction to the present invention.
Referring to Fig. 3, Fig. 3 shows the first embodiment of the light fixture of the invention with fan, and it includes LED constant current driving electricity
Source, fan M and multigroup LED lamp bead group being serially connected, every group of LED lamp bead group include multiple LED lamp beads parallel with one another；
The LED constant current driving power is electrically connected and is used for LED lamp bead group powers for the LED lamp bead group；The fan M with it is any
LED lamp bead group is in parallel, and the LED lamp bead group in parallel with the fan M is reduced to the fan M by voltage and powered.
It should be noted that the present invention is powered by the voltage drop of LED lamp bead group to fan M, therefore need not be
Fan M designs independent constant voltage drive circuit, can effectively simplify drive circuit, reduces process costs, saves space.
In order to ensure fan M normal work, need to only choose with appropriate electrical pressure drop (VF) one or more groups of lamp bead groups
Carry out in parallel, it is preferable that the voltage drop of the light fixture with the fan LED lamp bead group in parallel with the fan M and fan M
Operating voltage it is identical.For example, fan M operating voltages are 12V then optional specified VFOne group of LED lamp bead group and wind equal to 12V
It is in parallel to fan M, also optional specified VFSum is in parallel with fan M equal to 12V multigroup LED lamp bead group.
As shown in figure 4, the present invention is powered using LED constant current driving power to LED lamp bead group, wherein, LED constant current is driven
The output voltage of dynamic power supply is more than fan higher than the minimum voltage needed for fan M normal works, the output of LED constant current driving power
Minimum current needed for M normal works.
Therefore, the present invention by by fan M it is in parallel with LED lamp bead group be in order to utilization LED lamp bead group voltage drop to wind
Fan M be powered (that is, during using LED lamp bead group by suitable electric current, both ends can produce more stable voltage drop, and this
Individual voltage drop and can meets the voltage required for fan M normal works).Meanwhile fan M is in parallel with LED lamp bead group in the present invention
Connected again with other LED lamp bead groups afterwards, enable LED lamp bead group normal luminous below.
As shown in figure 5, Fig. 5 shows the second embodiment of the light fixture of the invention with fan, implement with first shown in Fig. 3
Unlike example, the light fixture with fan described in the present embodiment also includes voltage-regulator diode ZD, the voltage-regulator diode ZD and wind
It is in parallel to fan M.
It should be noted that the present invention carries out over-voltage clamping protection using voltage-regulator diode ZD to fan M.
As shown in fig. 6, Fig. 6 shows the 3rd embodiment of the light fixture of the invention with fan, implement with second shown in Fig. 5
Unlike example, the light fixture with fan described in the present embodiment also includes current-limiting resistance group, and the current-limiting resistance group is gone here and there with fan M
It is in parallel with any LED lamp bead group after connection, meanwhile, the LED lamp bead group in parallel with the current-limiting resistance group and fan M passes through voltage drop
Powered for the fan M.Wherein, the current-limiting resistance group includes multiple current-limiting resistances parallel with one another, preferably 2~3 phases
Mutually current-limiting resistance in parallel.
It should be noted that the present invention flows through fan M maximum current by the regulation of current-limiting resistance group, so as to limit fan
M maximum current, ensure that fan M will not damage because of high current, wherein the DC current scope for flowing through fan M is usually 50-
150mA.Specifically, the current-limiting resistance group need to meet following condition:
(VF-VM)/IM max≤R≤(VF-VM)/IM min, wherein, VFFor the voltage drop of the LED lamp bead group in parallel with fan M,
R be current-limiting resistance parallel connection after total resistance, VMFor fan M operating voltage, IM maxFor fan M maximum operating currenbt, IM min
For fan M minimum working current.
RIt is actual=(VF-VM)/IM, wherein, RIt is actualFor the actual resistance after current-limiting resistance parallel connection, IMFor fan M work electricity
Stream.
N≥(IM×IM×RIt is actual)/PR, wherein, N be current-limiting resistance quantity, IMFor fan M operating current, PRFor current limliting
The power of resistance.
As shown in fig. 7, Fig. 7 shows the fourth embodiment of the light fixture of the invention with fan, implement with the 3rd shown in Fig. 6
Unlike example, the light fixture with fan described in the present embodiment also includes being used for the paster for monitoring LED lamp bead operating temperature in real time
The negative pole of thermistor NTC, the paster thermistor NTC one end connection LED lamp bead group, other end connection LED constant current are driven
Dynamic power supply.
It should be noted that LED lamp bead drops power automatically by the whole lamp of temperature, LED lamp bead temperature is high, paster thermistor
NTC resistance diminishes, and so as to trigger overheat protector point, driving LED constant current driving power reduces duty cycle of switching, turns down output electricity
Stream, so as to reach reduction power, be advantageous to ensure product reliability.
From the foregoing, it will be observed that the present invention is powered using the voltage drop of LED lamp bead group to fan M, therefore need not be fan M
Independent constant voltage drive circuit is designed, can effectively simplify drive circuit, reduces process costs, saves space.Meanwhile this hair
It is bright that over-voltage clamping protection is carried out to fan M using voltage-regulator diode ZD；Fan M maximum electricity is flowed through by the regulation of current-limiting resistance group
Stream, so as to limit fan M maximum current, ensure that fan M will not damage because of high current；It is real by paster thermistor NTC
When monitor LED lamp bead operating temperature, realize overheat protector point be advantageous to ensure product reliability.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. a kind of light fixture with fan, it is characterised in that including LED constant current driving power, fan and multigroup LED being serially connected
Lamp bead group；
The LED constant current driving power is electrically connected and is used for LED lamp bead group powers for the LED lamp bead group；
The fan is in parallel with any LED lamp bead group, and the LED lamp bead group in parallel with the fan is reduced to the fan by voltage
Power supply.
2. the light fixture with fan as claimed in claim 1, it is characterised in that the electricity of the LED lamp bead group in parallel with the fan
Pressure drop is identical with the operating voltage of fan.
3. the light fixture with fan as claimed in claim 1, it is characterised in that every group of LED lamp bead group includes multiple mutual
LED lamp bead in parallel.
4. the light fixture with fan as claimed in claim 1, it is characterised in that also including voltage-regulator diode, the pole of voltage stabilizing two
Pipe is in parallel with fan.
5. the light fixture with fan as claimed in claim 1, it is characterised in that also including current-limiting resistance group, the current-limiting resistance
Group is in parallel with any LED lamp bead group after being connected with fan.
6. the light fixture with fan as claimed in claim 5, it is characterised in that the current-limiting resistance group includes multiple parallel with one another
Current-limiting resistance.
7. the light fixture with fan as claimed in claim 1, it is characterised in that also include being used to monitor LED lamp bead work in real time
The paster thermistor of temperature, the negative pole of one end connection LED lamp bead group of the paster thermistor, other end connection LED are permanent
Flow driving power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942802.8A CN107682956A (en) | 2017-10-11 | 2017-10-11 | A kind of light fixture with fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942802.8A CN107682956A (en) | 2017-10-11 | 2017-10-11 | A kind of light fixture with fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107682956A true CN107682956A (en) | 2018-02-09 |
Family
ID=61140475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710942802.8A Pending CN107682956A (en) | 2017-10-11 | 2017-10-11 | A kind of light fixture with fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107682956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478590A (en) * | 2020-04-13 | 2020-07-31 | 中国电子科技集团公司第五十八研究所 | Magnetic isolation type ultrathin dc-dc converter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100181833A1 (en) * | 2009-01-22 | 2010-07-22 | Nanker (Guangzhou) Semiconductor Manufacturing Corp. | LED Lamp Circuit |
| CN202587492U (en) * | 2012-03-28 | 2012-12-05 | 李洪资 | High-power LED constant-voltage stable-current driving light source |
| US9206972B1 (en) * | 2013-01-25 | 2015-12-08 | LEDLab, LLC | Compact LED device with cooling fan |
| CN205793512U (en) * | 2016-06-01 | 2016-12-07 | 重庆霖萌电子科技有限公司 | A kind of LED of fan series connection |
| CN106231741A (en) * | 2016-10-13 | 2016-12-14 | 伊戈尔电气股份有限公司 | The anti-dim light circuit of the LED light source that a kind of linear constant current drives |
| JP2017117975A (en) * | 2015-12-25 | 2017-06-29 | Ｉｐｆ株式会社 | Power supply device for led illumination |
| CN107237995A (en) * | 2017-07-10 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of LED bulb of high efficiency and heat radiation |
| CN207652724U (en) * | 2017-10-11 | 2018-07-24 | 佛山电器照明股份有限公司 | A kind of lamps and lanterns with fan |
-
2017
- 2017-10-11 CN CN201710942802.8A patent/CN107682956A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100181833A1 (en) * | 2009-01-22 | 2010-07-22 | Nanker (Guangzhou) Semiconductor Manufacturing Corp. | LED Lamp Circuit |
| CN202587492U (en) * | 2012-03-28 | 2012-12-05 | 李洪资 | High-power LED constant-voltage stable-current driving light source |
| US9206972B1 (en) * | 2013-01-25 | 2015-12-08 | LEDLab, LLC | Compact LED device with cooling fan |
| JP2017117975A (en) * | 2015-12-25 | 2017-06-29 | Ｉｐｆ株式会社 | Power supply device for led illumination |
| CN205793512U (en) * | 2016-06-01 | 2016-12-07 | 重庆霖萌电子科技有限公司 | A kind of LED of fan series connection |
| CN106231741A (en) * | 2016-10-13 | 2016-12-14 | 伊戈尔电气股份有限公司 | The anti-dim light circuit of the LED light source that a kind of linear constant current drives |
| CN107237995A (en) * | 2017-07-10 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of LED bulb of high efficiency and heat radiation |
| CN207652724U (en) * | 2017-10-11 | 2018-07-24 | 佛山电器照明股份有限公司 | A kind of lamps and lanterns with fan |
Non-Patent Citations (1)
| Title |
|---|
| 曲远方, 华东理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478590A (en) * | 2020-04-13 | 2020-07-31 | 中国电子科技集团公司第五十八研究所 | Magnetic isolation type ultrathin dc-dc converter |
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