CN108180405B - LED lamp tube with self-adaptive installation height - Google Patents

LED lamp tube with self-adaptive installation height Download PDF

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Publication number
CN108180405B
CN108180405B CN201711237453.6A CN201711237453A CN108180405B CN 108180405 B CN108180405 B CN 108180405B CN 201711237453 A CN201711237453 A CN 201711237453A CN 108180405 B CN108180405 B CN 108180405B
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China
Prior art keywords
led
power supply
lamp
lamp shell
driving power
Prior art date
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Application number
CN201711237453.6A
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Chinese (zh)
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CN108180405A (en
Inventor
黄小文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI FEILO ACOUSTICS CO LTD
Shanghai Yaming Lighting Co Ltd
Original Assignee
SHANGHAI FEILO ACOUSTICS CO LTD
Shanghai Yaming Lighting Co Ltd
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Application filed by SHANGHAI FEILO ACOUSTICS CO LTD, Shanghai Yaming Lighting Co Ltd filed Critical SHANGHAI FEILO ACOUSTICS CO LTD
Priority to CN201711237453.6A priority Critical patent/CN108180405B/en
Publication of CN108180405A publication Critical patent/CN108180405A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • 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
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/023—Power supplies in a casing
    • 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
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention provides an LED lamp tube with self-adaptive installation height, which comprises: the LED lamp comprises a lamp shell, a driving power supply and a double-sided LED module arranged in the lamp shell, wherein the double-sided LED module is provided with LED light sources on the upper and lower surfaces extending along the length direction of the lamp shell, a light sensing element with a light sensing surface facing the upper part of the lamp shell is further arranged on the lamp shell, the driving power supply is connected with the LED light sources, the light sensing element transmits a brightness signal detected above the lamp shell to a controller in the driving power supply, and the controller changes the current output by the driving power supply for the two sets of LED light sources according to different brightness signals. The invention can automatically detect the height between the lamp tube and the ceiling, adjust the current and the light emitting ratio of the upper and lower LED light sources, not only does not waste the luminous flux required by main illumination, but also achieves the optical effect of top illumination.

Description

LED lamp tube with self-adaptive installation height
Technical Field
The invention relates to the technical field of illumination, in particular to an LED lamp tube with self-adaptive installation height.
Background
LED lamps replace traditional incandescent lamps and gas discharge lamps and are the major products in the field of lighting today. The LED lamp tube naturally becomes a substitute product of the fluorescent lamp tube, and the LED lamp tube can be used as the substitute product in various lamps and using environments of the fluorescent lamp tube, so that the aim of saving more energy is fulfilled. However, because of the directional light source characteristic of the lamp beads, the LED lamp tube is often designed to emit light on a single side, that is, the light-emitting surface of the lamp tube is downward after the lamp tube is installed. However, in some special occasions, such as subway stations, for example, warehouse corridors where few people pass, if the LED lamp tube with single-side light emitting is installed, the part above the lamp tube has no light, and the top wall or the ceiling of the station is completely painted with black paint, so that an unsafe feeling can be brought to people. At this time, the lamp tube needs to be made into double-sided light emission, but the double-sided light emission brings a great difficulty for designers, namely how to adjust the proportion of upper light emission and lower light emission under the condition that the power of the lamp tube, namely the total luminous flux is fixed. If the proportion is not suitable, if the upward luminous flux is too large, the downward main illuminating luminous flux is insufficient, which causes the waste of the luminous flux; or the upward light flux is too small, and the light on the upper part of the lamp tube is still dark, so that the expected effect cannot be achieved.
Therefore, a double-sided light-emitting LED lamp tube with self-adaptive installation height is needed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an LED lamp with an adaptive installation height, which is used to solve the problem that it is difficult for the LED lamp to automatically adjust the illuminance in the prior art.
To achieve the above and other related objects, the present invention provides an LED lamp with adaptive installation height, comprising: the LED lamp comprises a lamp shell, a driving power supply and a double-sided LED module arranged in the lamp shell, wherein the double-sided LED module is provided with LED light sources on the upper and lower surfaces extending along the length direction of the lamp shell, a light sensing element with a light sensing surface facing the upper part of the lamp shell is further arranged on the lamp shell, the driving power supply is connected with the LED light sources, the light sensing element transmits a brightness signal detected above the lamp shell to a controller in the driving power supply, and the controller changes the current output by the driving power supply for the two sets of LED light sources according to different brightness signals.
Preferably, the light sensing element is a photoresistor, a photodiode or a photosensitive chip.
Preferably, the number of the light sensing elements is two, and the two light sensing elements are respectively arranged at two ends of the lamp housing.
Preferably, the driving power supply is a constant current source with constant power output.
Preferably, the LED light source is composed of a circuit bottom plate and LED lamp beads arranged on the circuit bottom plate.
Preferably, the double-sided LED module further includes an aluminum heat sink for fixing the LED light source.
As mentioned above, the LED lamp tube with the self-adaptive installation height has the following beneficial effects: the LED ceiling lamp is provided with the double-sided LED module, can emit light in the up-and-down direction, and detects the illuminance reflected by the upper part of the LED lamp tube through the light sensation element, so that the height between the lamp tube and the ceiling can be automatically detected, the current and the light emitting proportion of the upper and lower LED light sources are adjusted, the luminous flux required by main illumination is not wasted, and the optical effect of top illumination is achieved.
Drawings
Fig. 1 is a schematic diagram of an LED lamp with adaptive installation height according to the present invention.
Fig. 2 is a partial schematic view of a double-sided LED module according to the present invention.
Description of the element reference numerals
1 Lamp body
2 double-sided LED module
21 LED light source
22 LED lamp bead
3 drive power supply
4 light-sensitive element
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the present invention provides an LED lamp tube with adaptive installation height, which includes: the lamp body 1, drive power supply 3 and arrange the two-sided LED module 2 in the lamp body 1 in, two-sided LED module 2 all is equipped with LED light source 21 on the upper and lower two sides that extend along lamp body length direction, it is shown in figure 2, still be equipped with photosensitive surface towards the light sense component 4 of lamp body top on the lamp body 1, drive power supply 3 with LED light source 21 links to each other, just light sense component 4 will detect the luminance signal transmission of lamp body top for the controller in drive power supply 3, and the controller changes the drive power supply output according to the luminance signal of difference and gives the electric current size of two sets of LED light sources 21. The double-sided LED module 2 is arranged in the ceiling lamp, can emit light in the vertical direction, and can detect the illuminance reflected from the upper part of the LED lamp tube through the light sensing element, so that the height between the LED lamp tube and the ceiling can be automatically detected, the current and the light emitting proportion of the LED light sources on the upper side and the lower side are adjusted, the luminous flux required by main illumination is not wasted, and the optical effect of top illumination is achieved.
The light sensing element 4 can be a photoresistor, a photodiode, a photosensitive chip or other elements capable of sensing different illuminance, and the light receiving surface of the light sensing element is upward, so that the light sensing element can receive the light reflected from the upper part of the LED lamp tube without being influenced by the lower light emitting surface or the reflected light. Because the LED lamp tubes are different in installation height or ceiling materials, the amount of light reflected by the ceiling is different, and the top illumination sensed by human eyes is different. The light sensing element 4 determines different heights and reflection effects according to different received luminous fluxes, and outputs different brightness signals to the driving power supply 3 to control the proportion of up-down light emission.
In order to more accurately sense the illuminance above the LED tube, the number of the light sensing elements 4 is two in the present embodiment, as shown in fig. 1,
are respectively arranged at two ends of the lamp shell 1. In this embodiment, the driving power supply 3 is a constant current source with constant power output, which can adjust the magnitude and proportion of the two paths of output currents and ensure that the total output power is unchanged.
In this embodiment, the light sensing element 4 is a photodiode, and can sense the darkness of ambient light to output photocurrent of different magnitudes, the photocurrent is converted into a voltage value that can be sampled by the controller through the amplifying circuit, and the controller identifies the darkness of ambient light around the photodiode according to the magnitude of the voltage value. The controller is a single chip microcomputer, and can also be other processors. The single chip microcomputer is provided with two paths of PWM dimming signal outputs and respectively controls two paths of output currents of the driving power supply, wherein the two paths of output currents are respectively an LED light source current emitting light in the warp direction and an LED light source current emitting light in the warp direction. When the illuminance detected by the light sensing element is lower than a set value preset in the single chip microcomputer, two paths of output PWM dimming signals of the single chip microcomputer are changed, so that the current in the LED light source emitting light upwards is increased, the current of the LED light source emitting light downwards is decreased, and the total output power is kept unchanged. On the contrary, when the illuminance detected by the light sensing element is higher than the set value, the two paths of output PWM dimming signals of the single chip microcomputer are changed, so that the current in the LED light source emitting upwards is reduced, the current in the LED light source emitting downwards is increased, and the total output power is kept unchanged.
As shown in fig. 2, the LED light source 21 of the present embodiment is composed of a circuit board and LED lamp beads 22 disposed on the circuit board. The double-sided LED module further includes an aluminum heat sink for fixing the LED light source 21. The circuit board can be two metal substrates, glass fiber boards or composite substrates, the circuit board is inserted into the aluminum radiator with grooves on the two sides, and the aluminum radiator is inserted into the two ends of the lamp shell 1 and fixed.
The LED light source 21 of the present embodiment uses the LED lamp bead 22 as a main light emitting element, which is G5 or G13 or other similar lamp head. The LED lamp tube can use a single white light LED lamp bead, and also can use LED lamp beads with two or more color temperatures. The LED lamp tube can adjust the brightness of each LED lamp bead 22 through the built-in or external driving power supply 3.
In summary, the LED lamp tube with the self-adaptive installation height of the present invention realizes that the LED lamp tubes with the same power can be installed at different heights, and also can be installed under different ceiling reflective materials, so as to ensure the constant illuminance at the top, and ensure the sufficient downward main illumination luminous flux while making people feel comfortable. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (6)

1. The utility model provides a LED fluorescent tube of self-adaptation mounting height which characterized in that includes: the LED lamp comprises a lamp shell, a driving power supply and a double-sided LED module arranged in the lamp shell, wherein the double-sided LED module is provided with LED light sources on the upper and lower sides extending along the length direction of the lamp shell, a light sensing element with a light sensing surface facing the upper part of the lamp shell is further arranged on the lamp shell, the driving power supply is connected with the LED light sources, the light sensing element transmits a brightness signal detected above the lamp shell to a controller in the driving power supply, and the controller changes the output of the driving power supply according to different brightness signals and outputs the current of the LED light sources on the upper and lower sides.
2. The LED lamp tube with the self-adaptive installation height as claimed in claim 1, wherein: the light sensing element is a photoresistor, a photosensitive diode or a photosensitive chip.
3. The LED lamp tube with the self-adaptive installation height as claimed in claim 1, wherein: the number of the light sensing elements is two, and the two light sensing elements are respectively arranged at two ends of the lamp shell.
4. The LED lamp tube with the self-adaptive installation height as claimed in claim 1, wherein: the driving power supply is a constant current source with constant power output.
5. The LED lamp tube with the self-adaptive installation height as claimed in claim 1, wherein: the LED light source is composed of a circuit bottom plate and LED lamp beads arranged on the circuit bottom plate.
6. The LED lamp tube with the self-adaptive installation height as claimed in claim 5, wherein: the double-sided LED module also comprises an aluminum heat radiation body for fixing the LED light source.
CN201711237453.6A 2017-11-30 2017-11-30 LED lamp tube with self-adaptive installation height Active CN108180405B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711237453.6A CN108180405B (en) 2017-11-30 2017-11-30 LED lamp tube with self-adaptive installation height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711237453.6A CN108180405B (en) 2017-11-30 2017-11-30 LED lamp tube with self-adaptive installation height

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CN108180405A CN108180405A (en) 2018-06-19
CN108180405B true CN108180405B (en) 2020-05-29

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Publication number Priority date Publication date Assignee Title
CN110005994A (en) * 2019-03-22 2019-07-12 海宁市鑫诚电子有限公司 A kind of LED flame lamp using two-sided luminous flame component
CN215411443U (en) * 2020-04-28 2022-01-04 嘉兴山蒲照明电器有限公司 LED straight lamp

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668663A (en) * 1994-05-05 1997-09-16 Donnelly Corporation Electrochromic mirrors and devices
US7490957B2 (en) * 2002-11-19 2009-02-17 Denovo Lighting, L.L.C. Power controls with photosensor for tube mounted LEDs with ballast
CN101071812A (en) * 2006-05-12 2007-11-14 启萌科技有限公司 Light-emitting diode packaging module
CN201555183U (en) * 2009-06-30 2010-08-18 黄火土 Desk lamp light source adjusting device
CN202660324U (en) * 2012-06-19 2013-01-09 云一科技有限公司 Electricity-saving illuminating device
CN207584418U (en) * 2015-11-27 2018-07-06 嘉兴山蒲照明电器有限公司 LED straight lamps
CN205480408U (en) * 2015-12-09 2016-08-17 马士科技有限公司 Sealed illumination fluorescent lamp

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