CN111720765B - LED table lamp and light distribution method thereof - Google Patents
LED table lamp and light distribution method thereof Download PDFInfo
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- CN111720765B CN111720765B CN202010671094.0A CN202010671094A CN111720765B CN 111720765 B CN111720765 B CN 111720765B CN 202010671094 A CN202010671094 A CN 202010671094A CN 111720765 B CN111720765 B CN 111720765B
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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
- 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
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- 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 light bar is arranged on the mounting frame, the light bar of the LED table lamp is divided into at least 2 light source areas with different powers and luminous fluxes, each light source area comprises at least 2 groups of light sources with different irradiation directions, each light source area is provided with a corresponding projection light shape, and the projection light shapes of the at least 2 light source areas are provided with overlapping and intersecting parts. According to the invention, through at least two different light source areas, light reflection spots are effectively eliminated, the illumination comfort of the desk lamp is improved, and the problem of light reflection caused by light irradiating on a desktop or paper is avoided.
Description
Technical Field
The invention belongs to the technical field of table lamps, and particularly relates to an LED table lamp and a light distribution method thereof.
Background
The content of the coated paper can be dazzling and unclear, the content of the common paper can be blurred, so that the eyes are easy to fatigue and ache, and the table lamp is difficult to reflect light so far. Current desk lamp contains mounting bracket, lamp strip usually, has the light source in the lamp strip, and the lamp strip level sets up, and the light source is uniform erection usually, and the light source of each position is all the same in the lamp strip promptly, and the light beam of whole desk lamp is unanimous, does not distinguish, and certain reflection of light problem often can be brought to this kind of grading mode, and the degree of consistency of light is relatively poor.
Disclosure of Invention
In order to solve the technical problem, the invention provides an LED table lamp and a light distribution method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a LED table lamp, includes mounting bracket and lamp strip, and lamp strip one end dress is on the mounting bracket, install the light source of three at least different irradiation directions of group in the lamp strip, the lamp strip divides into two at least light source regions along axial direction, and the power and the luminous flux in these two at least light source regions are all inequality.
The light source regions comprise an A light source region and a B light source region which are respectively arranged, the light source regions are arranged from one end of the light bar, which is connected with the mounting frame, as a starting point meter and are sequentially arranged along the axial direction of the light bar, wherein the power and luminous flux of the A light source area are larger than those of the B light source area, and the A light source area and the B light source area both comprise at least 2 groups of light sources with different irradiation directions.
The light source region also comprises a light source region C, and the light source region C is arranged in the central position between the light source region A and the light source region B.
A light distribution method of an LED table lamp comprises the following steps:
the light bar on the mounting rack of the LED table lamp is divided into at least 2 light source areas with different powers and luminous fluxes, each light source area comprises at least 2 groups of light sources with different illumination directions, each light source area is provided with a corresponding projection light shape, and the projection light shapes of the at least 2 light source areas are provided with overlapped intersection parts.
The LED lamp strip is divided into two light source areas, namely an A light source area and a B light source area, the end of the lamp strip, which is connected with the mounting frame, is taken as a starting point, the A light source area and the B light source area are sequentially arranged along the axial direction of the lamp strip, wherein the power and the luminous flux of the A light source area are greater than those of the B light source area, and the A light source area and the B light source area both comprise at least 2 groups of light sources with different irradiation directions;
the projection light shape of the light source region A is correspondingly marked as a light shape region a, the projection light shape of the light source region B is correspondingly marked as a light shape region B, and the light shape region a and the light shape region B are provided with overlapping intersection parts;
an included angle N is formed by a connecting line of the center of the light-shaped area a and the center of the light source area A and a connecting line of the center of the light-shaped area B and the center of the light source area B, and the included angle N is 5-40 degrees.
The light bar is further divided into a light source area C, the light source area C is arranged in the center positions of the light source area A and the light source area B, the center of the projection light shape of the light source area C is located in the range of the overlapping and crossing part of the light shape area a and the light shape area B, and the light source area C only illuminates the area far away from the light bar.
The lamp strips are arranged in an up-and-down inclined mode with high end and low end, the lamp strips are arranged in a high position with one end installed on the mounting frame, and the other ends of the lamp strips are arranged in a low position, so that an included angle is formed between the lamp strips and the mounting frame.
According to the invention, the light source on the light bar is divided into at least 2 light source areas with different powers and luminous fluxes, each light source area irradiates different positions, and the light source areas are mixed and superposed to form asymmetric light distribution, so that the uniformity is better, the problem of light reflection can be better eliminated, and the irradiation comfort is improved.
Drawings
FIG. 1 is a schematic view of a light projection structure of the LED table lamp of the present invention;
FIG. 2 is a schematic side view of an LED table lamp according to the present invention;
FIG. 3 is a schematic view of the light shape area of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
On one hand, as shown in fig. 1 and 2, the invention provides an LED desk lamp, which comprises an installation frame and a lamp strip, wherein one end of the lamp strip is installed on the installation frame, three groups of light sources with different irradiation directions are installed in the lamp strip, the lamp strip is divided into three light source areas along the axial direction, and the power and the luminous flux of the three light source areas are different.
The light source area comprises an A light source area, a B light source area and a C light source area which are specifically divided, wherein the A light source area, the C light source area and the B light source area are sequentially arranged along the axial direction of a lamp strip from one end of the lamp strip, which is connected with the mounting frame, as a starting point meter, the power and the luminous flux of the A light source area are greater than those of the B light source area, the A light source area and the B light source area both comprise at least 2 groups of light sources in different irradiation directions, and the plurality of irradiation directions form asymmetric light distribution. And all light sources in the light source region C are in the same irradiation direction. To the light source of different irradiation directions, only need inside lamp strip, during the installation light source, make the illuminating surface of light source different can, to the concrete installation of light source, through screw or glue connection, only need satisfy have different irradiation directions can, form asymmetric grading.
In addition, the invention also provides a light distribution method of the LED table lamp, which comprises the following steps:
as shown in fig. 1, a light bar of the LED desk lamp is divided into three light source regions, namely, a light source region a, a light source region B and a light source region C, each light source region includes at least 2 groups of light sources with different irradiation directions, each light source region has a corresponding projection light shape, the light source regions a, C and B are sequentially arranged along an axial direction of the light bar from an end of the light bar connected to the mounting bracket as a starting point, wherein power and luminous flux of the light source region a are greater than power and luminous flux of the light source region B.
The projection light shape of the light source region A is correspondingly marked as a light shape region a, the projection light shape of the light source region B is correspondingly marked as a light shape region B, the projection light shape of the light source region C is correspondingly marked as a light shape region C, and the light shape region a and the light shape region B are provided with overlapping and crossing parts. The light-shaped areas a, b and c are approximately square shapes respectively.
an included angle N is formed by a connecting line of the center of the light-shaped area a and the center of the light source area A and a connecting line of the center of the light-shaped area B and the center of the light source area B, the size of the included angle N is 5-40 degrees, projected light can be more uniform by limiting the included angle within the angle range, and reflecting light spots are effectively reduced.
The light bar is further divided into a C light source area, the C light source area is arranged at the center positions of the A light source area and the B light source area, the center of the projected light shape of the C light source area is located in the range of the overlapping and crossing part of the a light shape area and the B light shape area, and the C light source area is used as a transition area and only illuminates the area far away from the light bar.
In addition, in the light source region B, a light source region B2 can be separated from a light source region C, and a light shape region projected by the light source region B2 is marked as a light shape region B2 and mainly plays a role in illuminating a region far away from the light bar.
In addition, as shown in fig. 2, the lamp strips are arranged in an up-and-down inclined manner with one high end and one low end, the lamp strips are arranged at the high position and the other end of the lamp strips are arranged at the low position, so that an included angle is formed between the lamp strips and the mounting frame, and the included angle can be flexibly adjusted to ensure that the lamp strips are not in a horizontal state.
In actual use, as shown in fig. 1, the position of a person sitting on a desk is defined as the back of the desk and the front is opposite to the back of the desk, which is taken as a reference of the desk. The LED desk lamp is preferably placed on the left side of the desk, the lamp bar is placed towards the back direction of the desk, and an included angle K is formed between the lamp bar and the left side of the desk. The light of the light source region B is projected to the rear area of the desk to form a light-shaped region B, the light of the light source region A is projected to the front area of the desk to form a light-shaped region a, the light-shaped region B and the light-shaped region a are overlapped and overlapped, and the light uniformity is higher. The light-shaped area a is mainly responsible for illumination of an area in front of a desk, the light-shaped area B is mainly responsible for illumination of an area behind the desk, and the central part of the light-shaped area a projected by the light source area A can be timely adjusted to be brighter and the two side parts of the light-shaped area B are darker, as shown in the attached drawing 3, the central part of the light-shaped area B projected by the light source area B is brighter and the two side parts of the light-shaped area B are darker, so that excellent illumination uniformity is obtained. Through the illumination limitation, the light reflecting spot projected by the A light source area can be positioned outside the a light shape area, so that the reverse intensity is zero. Since the small section near the middle of the desk in the c-shaped light area only illuminates the right back, the light-reflecting spot of the small section is on the left, so the intensity is also zero. Usually, only a small part of the B-shaped area projected by the B light source area can form reflecting light spots with intensity, but the light spots are positioned outside the book due to the excessively backward position, so that the reflecting problem is basically eliminated.
It should be noted that, although the present invention has been described in detail with reference to the embodiments, the technical solutions described in the foregoing embodiments or some of the technical features of the embodiments can be modified or replaced with equivalents by those skilled in the art, but any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A light distribution method of an LED table lamp is characterized by comprising the following steps:
the LED desk lamp comprises a mounting rack and a lamp strip, wherein one end of the lamp strip is arranged on the mounting rack, the lamp strip on the mounting rack of the LED desk lamp is arranged in an up-and-down inclined mode, one end of the lamp strip is higher than the other end of the lamp strip, and the other end of the lamp strip is lower than the mounting rack, so that an included angle is formed between the lamp strip and the mounting rack;
dividing a light bar on an installation frame into a light source area A, a light source area B and a light source area C, taking one end of the light bar, which is connected with the installation frame, as a starting point, sequentially arranging the light source area A, the light source area C and the light source area B along the axial direction of the light bar, wherein the power and the luminous flux of the three light source areas are different, the power and the luminous flux of the light source area A are larger than those of the light source area B, each light source area comprises at least 2 groups of light sources in different irradiation directions, and the asymmetrical light distribution is formed in multiple different irradiation directions; the projection light shape of the light source region A is correspondingly marked as a light shape region a, the projection light shape of the light source region B is correspondingly marked as a light shape region B, the projection light shape of the light source region C is correspondingly marked as a light shape region C, the light shape regions a, B and C are respectively approximate to a square shape, and the light shape regions a and B are provided with overlapping and crossing parts;
wherein, a connecting line of the center of the light-shaped area a and the center of the light source area A and a connecting line of the center of the light-shaped area B and the center of the light source area B form an included angle N, and the included angle N is 5-40 degrees, so that the projected light is uniform, and the reflection light spots are reduced;
the C light source area is arranged at the central positions of the A light source area and the B light source area, the center of the projection light shape of the C light source area is positioned in the range of the overlapping and crossing part of the a light shape area and the B light shape area, and the C light source area is used as a transition area and only illuminates the area far away from the light bar;
in the light source region B, a light source region B2 is separated from a light source region C, and a light shape region projected by the light source region B2 is marked as a light shape region B2 and is used for irradiating a region far away from the light bar.
2. A LED table lamp comprises a mounting frame and a lamp strip, wherein one end of the lamp strip is mounted on the mounting frame, and the lamp strip is obliquely arranged up and down, wherein one end of the lamp strip is higher than the other end of the lamp strip;
the light source device is characterized in that a starting point meter is arranged at one end, connected with the mounting frame, of the light bar, a light source area A, a light source area C and a light source area B are sequentially arranged along the axial direction of the light bar, and the power and the luminous flux of the three light source areas are different;
the power and the luminous flux of the light source area A are greater than those of the light source area B, each light source area comprises at least 2 groups of light sources with different irradiation directions, and asymmetric light distribution is formed in the plurality of different irradiation directions;
the projection light shape of the light source region A is correspondingly marked as a light shape region a, the projection light shape of the light source region B is correspondingly marked as a light shape region B, the projection light shape of the light source region C is correspondingly marked as a light shape region C, the light shape regions a, B and C are respectively approximately square, and the light shape regions a and B are provided with overlapping and crossing parts;
wherein, a connecting line of the center of the light-shaped area a and the center of the light source area A and a connecting line of the center of the light-shaped area B and the center of the light source area B form an included angle N, and the included angle N is 5-40 degrees, so that the projected light is uniform, and the reflection light spots are reduced;
the C light source area is arranged in the center of the A light source area and the B light source area, the center of the projected light shape of the C light source area is positioned in the range of the overlapping and crossing part of the a light shape area and the B light shape area, and the C light source area is used as a transition area and illuminates an area far away from the light bar;
in the light source region B, a light source region B2 is separated from a light source region C, and a light shape region projected by the light source region B2 is marked as a light shape region B2 and is used for irradiating a region far away from the light bar.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671094.0A CN111720765B (en) | 2020-07-13 | 2020-07-13 | LED table lamp and light distribution method thereof |
| PCT/CN2021/102875 WO2022012319A1 (en) | 2020-07-13 | 2021-06-28 | Led table lamp and light distribution method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671094.0A CN111720765B (en) | 2020-07-13 | 2020-07-13 | LED table lamp and light distribution method thereof |
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| Publication Number | Publication Date |
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| CN111720765A CN111720765A (en) | 2020-09-29 |
| CN111720765B true CN111720765B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010671094.0A Active CN111720765B (en) | 2020-07-13 | 2020-07-13 | LED table lamp and light distribution method thereof |
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| CN (1) | CN111720765B (en) |
| WO (1) | WO2022012319A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111720765B (en) * | 2020-07-13 | 2022-10-18 | 梁号 | LED table lamp and light distribution method thereof |
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- 2021-06-28 WO PCT/CN2021/102875 patent/WO2022012319A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022012319A1 (en) | 2022-01-20 |
| CN111720765A (en) | 2020-09-29 |
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