CN110375262B - Lighting and light distribution system of bicycle lamp and bicycle lamp - Google Patents
Lighting and light distribution system of bicycle lamp and bicycle lamp Download PDFInfo
- Publication number
- CN110375262B CN110375262B CN201910752635.XA CN201910752635A CN110375262B CN 110375262 B CN110375262 B CN 110375262B CN 201910752635 A CN201910752635 A CN 201910752635A CN 110375262 B CN110375262 B CN 110375262B
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- light
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- segment
- optical axis
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- 230000003287 optical effect Effects 0.000 claims abstract description 51
- 238000005286 illumination Methods 0.000 claims abstract description 17
- 241001465382 Physalis alkekengi Species 0.000 claims 1
- 239000011324 bead Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/265—Composite lenses; Lenses with a patch-like shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
- F21W2107/13—Use or application of lighting devices on or in particular types of vehicles for land vehicles for cycles
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A bicycle lamp illumination and light distribution system and a bicycle lamp are provided, wherein the bicycle lamp illumination and light distribution system comprises an LED light source and a lens group. The lens group comprises a converging lens and a special-shaped lens. The converging lens comprises a first light incident surface and a first light emergent surface. The special-shaped lens comprises a second light incident surface and a second light emergent surface. The first light-emitting surface and the second light-emitting surface corresponding to the straight line segment adjust the emergent light of the LED light source to be parallel to the optical axis, and the first light-emitting surface and the second light-emitting surface corresponding to the arc segment adjust the emergent light of the LED light source to be divergent light far away from the optical axis. The illumination light distribution system of the bicycle lamp can enable the parallel light emitted from the second light emitting surface corresponding to the straight line section to form a bright light spot on the ground, and the divergent light emitted from the second light emitting surface corresponding to the arc section can form a light band on the ground, so that the requirements of some countries on the light spot structure can be met.
Description
Technical Field
The invention belongs to the technical field of lamp light distribution, and particularly relates to a lighting light distribution system of a bicycle lamp and a bicycle lamp.
Background
The bicycle is an indispensable transportation means in daily life of people, is used for going up and down or going down in suburbs, and along with social low-carbon calling and health attention of people, many people start riding the bicycle again. Nowadays, bicycles are very various, including mountain bikes, off-road bikes, and the like, each having its function. However, when people use the bicycle, particularly riding in the evening, people often find that the bicycle cannot be ridden because the bicycle is too dark, and even if street lamps are arranged, the people can hardly see the road clearly. Some people can use the flashlight to illuminate, but the flashlight is held by one hand, so that riding is unsafe, and the existing bicycle can be provided with the vehicle-mounted lamp arranged on the bicycle frame.
With the development of science and technology and the improvement of living standard, some countries have specific requirements on light spots formed by lamps loaded on bicycles, rather than just lighting.
Disclosure of Invention
In view of the above, the present invention provides an illumination and light distribution system of a bicycle lamp and a bicycle lamp capable of forming a predetermined light spot, so as to solve the above-mentioned problems.
A lighting distribution system of a bicycle lamp comprises an LED light source and a lens group arranged in the light path of the LED light source. The light source includes an optical axis. The lens group comprises a converging lens and a special-shaped lens arranged in the light emergent direction of the converging lens. The converging lens comprises a first light incident surface and a first light emergent surface. The first light-emitting surface is a rotation surface taking the optical axis as a central axis. The contour line of the first light-emitting surface on the section along the optical axis is an arc shape with positive curvature relative to the LED light source. The special-shaped lens comprises a second light incident surface and a second light emergent surface. The contour line of the second light incident surface on one of the sections along the optical axis includes a straight line section and an arc section connected to the straight line section. The second light incident surface is formed by scanning the straight line segment and the arc segment along a perpendicular line perpendicular to the arrangement direction of the straight line segment and the arc segment and the plane formed by the optical axis. And the contour line of the second light emitting surface on the section along the optical axis and parallel to the arrangement direction of the straight line section and the arc section is an arc line. The second light-emitting surface is formed by scanning the arc line along a perpendicular line perpendicular to the arrangement direction of the straight line section and the arc section and the plane formed by the optical axis. And in the direction along the optical axis, the second light-emitting surface corresponding to the first light-emitting surface and the straight line segment adjusts the emergent light of the LED light source into parallel light parallel to the optical axis, and the second light-emitting surface corresponding to the first light-emitting surface and the arc segment adjusts the emergent light of the LED light source into divergent light far away from the optical axis.
Further, the optical axis intersects and is perpendicular to the straight line segment.
Further, the LED light source and the converging lens are arranged at intervals, the converging lens and the special-shaped lens are arranged at intervals, and the converging lens is arranged between the LED light source and the special-shaped lens.
Further, a boundary line is formed when the straight line segment and the arc segment are scanned along a perpendicular line perpendicular to a plane formed by the arrangement direction of the straight line segment and the arc segment and the optical axis, and the boundary line is parallel to a horizontal plane when in use.
Further, when in use, the second light incident surface formed by the arc section scanning is positioned below the second light incident surface formed by the straight line section scanning.
Further, in a cross section along the optical axis and an arrangement direction of the straight line segment and the arc segment, the arc line takes the optical axis as a symmetry axis.
Further, the optical axis passes through a central axis of the converging lens in a light-emitting direction along the converging lens.
Further, the first light incident surface is a plane.
A bicycle light comprising a bicycle light illumination and distribution system as described above, and a lamp housing for assembling the bicycle light illumination and distribution system. The lamp housing includes an outer housing and an inner housing disposed within the outer housing. The special-shaped lens is arranged on the shell. The light source and the converging lens are arranged on the inner shell.
Further, on the section along the arrangement direction of the straight line section and the arc section and the optical axis, the first light incident surface formed by scanning the arc section is arranged towards the ground.
Compared with the prior art, in the illumination light distribution system of the bicycle lamp, when the bicycle lamp is started, light emitted by the LED light source is converged by the converging lens, the special-shaped lens is arranged in the light emitting direction of the converging lens, the first light incident surface of the special-shaped lens is divided into two parts, on the section along the optical axis, the two parts are formed by scanning straight line segments and arc segments, meanwhile, the second light emergent surface of the special-shaped lens is formed by scanning an arc line, and the second light emergent surface corresponding to the straight line segments and the first light emergent surface of the converging lens jointly regulate the light emitted by the LED light source into parallel light. The second light-emitting surface corresponding to the arc-shaped section and the first light-emitting surface of the converging lens jointly adjust the light emitted by the LED light source to diverge away from the optical axis, so that the parallel light emitted by the second light-emitting surface corresponding to the straight-line section forms a bright light spot on the ground, and the divergent light emitted by the second light-emitting surface corresponding to the arc-shaped section forms a light band on the ground, thereby meeting the requirements of some countries on the light spot structure.
Drawings
Fig. 1 is an exploded view of a bicycle lamp according to the present invention.
FIG. 2 is a schematic cross-sectional view of the bicycle lamp of FIG. 1
FIG. 3 is a schematic view of an optical path formed by the bicycle lamp of FIG. 1.
Detailed Description
Specific embodiments of the present invention are described in further detail below. It should be understood that the description herein of the embodiments of the invention is not intended to limit the scope of the invention.
Fig. 1 to 3 are schematic structural views of a bicycle lamp according to the present invention. The bicycle light includes a lighting distribution system 10 including a bicycle light fixture, and a lamp housing 20 for assembling the lighting distribution system of the bicycle light fixture. It is contemplated that the bicycle lamp may further include other functional modules such as a power module, an electrical connection assembly, an assembly, etc., which are well known to those skilled in the art and will not be described in detail herein.
The illumination and light distribution system 10 of the bicycle lamp comprises an LED light source 11 and a lens group 12 arranged in the light emitting direction of the LED light source 11. The LED light source 11 may be an LED lamp bead. The LED lamp beads should be a semiconductor electronic device capable of converting electric energy into light energy, which is also called a light emitting diode, which is a technology known to those skilled in the art. It is well known to those skilled in the art that each light source should include an optical axis, which should be the guiding and standard of optical design. In this embodiment, the LED light source 11 has an optical axis 111.
The lens group 12 includes a converging lens 121, and a shaped lens 122 disposed in the light-emitting direction of the converging lens 121. When assembling the LED light source 11 and the lens group 12, the LED light source 11 should be disposed at a distance from the converging lens 121, the converging lens 121 is disposed at a distance from the shaped lens 122, and the converging lens 121 is disposed between the LED light source 111 and the shaped lens 122. The converging lens 121 includes a first light incident surface 123 for receiving the light from the LED light source 11, and a first light emergent surface 124 for receiving the light from the first light incident surface 123. The first light incident surface 123 is a plane. When one light incident surface is a plane, the light emergent path of the light is not regulated except for the change of the light path which accords with the refraction law. The first light-emitting surface 124 is a rotation surface having the optical axis 111 as a central axis, and thus the optical axis 111 passes through the central axis of the converging lens 121 in the light-emitting direction along the converging lens 121. . The contour line of the first light-emitting surface 124 on a section along the optical axis 111 is an arc shape having a positive curvature with respect to the LED light source 11. The first light emitting surface 124 adjusts the light emitted from the LED light source 11 for the first time, and since the contour line of the first light emitting surface 124 is an arc shape with a positive curvature with respect to the LED light source 11, the first light emitting surface converges the light emitted from the LED light source 11. The degree of convergence is designed to fit the shaped lens 122, as will be described in more detail below.
The shaped lens 122 includes a second light incident surface 125 for receiving the light emitted from the first light incident surface 124, and a second light emergent surface 126 for receiving the light emitted from the second light incident surface 125. The contour line of the second light incident surface 125 in one of the cross sections along the optical axis 111 includes a straight line segment 127 and an arc segment 128 connected to the straight line segment 127. The second light incident surface 125 is formed by scanning the straight line segment 127 and the arc segment 128 along a perpendicular line perpendicular to the arrangement direction of the straight line segment 127 and the arc segment 128 and the plane formed by the optical axis 111. Also, therefore, a dividing line 129 is formed when the straight line segment 127 and the arc segment 128 are scanned along a perpendicular line perpendicular to the arrangement direction of the straight line segment 127 and the arc segment 128 and the plane formed by the optical axis 111, and the dividing line 129 should be parallel to a horizontal plane in use. The outline of the second light emitting surface 126 is an arc line on a section along the optical axis 111 and parallel to the arrangement direction of the straight line segment 127 and the arc segment 128. The second light emitting surface 126 is formed by scanning the arc line along a perpendicular line perpendicular to the arrangement direction of the straight line segment 127 and the arc segment 128 and the plane formed by the optical axis 111. Meanwhile, on the cross section along the optical axis 111 and the alignment direction of the straight line segment 127 and the arc segment 128, the arc line takes the optical axis 111 as a symmetry axis, so that the second light incident surface 125 is beneficial to adjusting the light output of different formed light spots. The shape of the second light emitting surface 126 is specifically defined by the requirement that, in the direction along the optical axis 111, the second light emitting surface 126 corresponding to the first light emitting surface 123 and the straight line segment 127 adjusts the light emitted from the LED light source 11 to be parallel to the optical axis 111, and the second light emitting surface 123 corresponding to the first light emitting surface 123 and the arc segment 128 adjusts the light emitted from the LED light source 11 to be divergent light away from the optical axis 11. In order to adjust the light output of the second light output surface 126 corresponding to the straight line segment 127, the optical axis 111 intersects with and is perpendicular to the straight line segment 127.
The lamp housing 20 includes an outer housing 21, and an inner housing 22 disposed within the outer housing 21. The specific shape of the housing 21 should be set according to practical needs, and is generally cylindrical, and in this embodiment, the housing 21 has a cylindrical shape with an oval cross section. The shaped lens 122 is fixedly arranged on the housing 21, and various fixing methods can be adopted, such as screwing, fixing by using a fastener or bonding by glue. In this embodiment, the steps that are coupled to each other are disposed on the housing 21 and the shaped lens 122, and then the housing 21 and the shaped lens 122 are fixed by glue. The inner case 22 is used for assembling the LED light source 11 and the condensing lens 121. The inner housing 22 is a circular cylinder structure, one side of which is used for assembling the LED light source 11, and the other side of which is used for assembling the converging lens 121, and the assembling manner should be the prior art, and will not be described herein.
In use, the second light incident surface 125 formed by scanning the arc segment 128 should be located below the second light incident surface 125 formed by scanning the straight segment 127. Therefore, on a cross section along the alignment direction of the straight line segment 127 and the arc segment 128 and the optical axis 111, the first light incident surface 125 formed by scanning the arc segment 128 is disposed towards the ground.
Compared with the prior art, in the illumination light distribution system of the bicycle lamp provided by the invention, when the bicycle lamp is started, the light emitted by the LED light source 11 is converged by the converging lens 121, the special-shaped lens 122 is arranged in the light emitting direction of the converging lens 121, the first light incident surface 125 of the special-shaped lens 121 is divided into two parts, on the section along the optical axis 111, the two parts are formed by scanning a straight line segment 127 and by scanning an arc segment 128, meanwhile, the second light emergent surface 126 of the special-shaped lens 122 is formed by scanning an arc line, and the second light emergent surface 126 corresponding to the straight line segment 127 and the first light emergent surface 124 of the converging lens 121 jointly regulate the light emitted by the LED light source 11 into parallel light. The second light emitting surface 126 corresponding to the arc segment 128 and the first light emitting surface 124 of the converging lens 121 together adjust the light emitted by the LED light source 111 to diverge away from the optical axis 111, so that the parallel light emitted from the second light emitting surface 126 corresponding to the straight line segment 127 forms a bright light spot on the ground, and the divergent light emitted from the second light emitting surface 126 corresponding to the arc segment 128 forms a light band on the ground, thereby meeting the requirements of some countries on the light spot structure.
The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a lighting distribution system of bicycle lamps and lanterns which characterized in that: the illumination light distribution system of the bicycle lamp comprises an LED light source and a lens group arranged in a light path of the LED light source, wherein the light source comprises an optical axis, the lens group comprises a converging lens and a special-shaped lens arranged in the light emitting direction of the converging lens, the converging lens comprises a first light inlet surface and a first light outlet surface, the first light outlet surface is a rotary surface taking the optical axis as a central axis, the contour line of the first light outlet surface on the section along the central axis is an arc-shaped surface which is in positive curvature relative to the light source, the special-shaped lens comprises a second light inlet surface, and a second light outlet surface, the contour line of the second light inlet surface on one section along the optical axis comprises a straight line segment, and an arc-shaped segment connected with the straight line segment, the second light inlet surface is formed by the straight line segment and the arc-shaped segment along the arrangement direction perpendicular to the straight line segment and the arc-shaped segment, the contour line of the first light outlet surface on the section along the section is in the direction parallel to the optical axis, the first light outlet surface is formed by the arc-shaped segment and the first light outlet surface on the plane which is formed by the straight line segment and the straight line segment, the first light outlet surface is formed by the arc-shaped segment and the straight line of the second light outlet surface on the plane which is formed by the straight line parallel to the straight line, the second light outlet surface on the plane is formed by the straight line and the straight line of the second light axis, the second light outlet surface on the straight line on the plane which is formed by the straight line and the straight line, the optical axis is intersected with the straight line segment and perpendicular to the straight line segment, the LED light sources are arranged at intervals with the converging lenses, the converging lenses are arranged at intervals with the special-shaped lenses, and the converging lenses are arranged between the LED light sources and the special-shaped lenses.
2. The bicycle light fixture illumination distribution system of claim 1, wherein: when the straight line segment and the arc segment scan along a vertical line perpendicular to a plane formed by the arrangement direction of the straight line segment and the arc segment and the optical axis, a dividing line is formed, and when the linear segment and the arc segment are used, the dividing line is parallel to a horizontal plane.
3. The bicycle light fixture illumination distribution system of claim 2, wherein: when the light source is used, the second light incident surface formed by the arc section scanning is positioned below the second light incident surface formed by the straight line section scanning.
4. The bicycle light fixture illumination distribution system of claim 1, wherein: the arc line takes the optical axis as a symmetry axis on a section along the optical axis and an arrangement direction of the straight line section and the arc section.
5. The bicycle light fixture illumination distribution system of claim 1, wherein: the optical axis passes through a central axis of the converging lens in a light-exiting direction along the converging lens.
6. The bicycle light fixture illumination distribution system of claim 1, wherein: the first light incident surface is a plane.
7. A bicycle lamp, characterized in that: the bicycle lamp comprises a bicycle lamp illumination and distribution system as claimed in any one of claims 1 to 6, and a lamp housing for assembling the bicycle lamp illumination and distribution system, wherein the lamp housing comprises an outer housing and an inner housing arranged in the outer housing, the special-shaped lens is arranged on the outer housing, and the light source and the converging lens are arranged on the inner housing.
8. The bicycle light of claim 7, wherein: and on the section along the arrangement direction of the straight line section and the arc section and the optical axis, the first light incident surface formed by scanning the arc section is arranged towards the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752635.XA CN110375262B (en) | 2019-08-15 | 2019-08-15 | Lighting and light distribution system of bicycle lamp and bicycle lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752635.XA CN110375262B (en) | 2019-08-15 | 2019-08-15 | Lighting and light distribution system of bicycle lamp and bicycle lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375262A CN110375262A (en) | 2019-10-25 |
| CN110375262B true CN110375262B (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910752635.XA Active CN110375262B (en) | 2019-08-15 | 2019-08-15 | Lighting and light distribution system of bicycle lamp and bicycle lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110375262B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3778359A1 (en) * | 2019-08-15 | 2021-02-17 | Jiashan Shengguang Electronics Co., Ltd. | Bicycle light distribution system and bicycle light having such a bicycle light distribution system |
| CN111853696A (en) * | 2020-08-05 | 2020-10-30 | 芜湖安瑞光电有限公司 | Car light optical assembly and car light with same |
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| FR2894322B1 (en) * | 2005-12-07 | 2015-09-18 | Koito Mfg Co Ltd | VEHICLE FIRE |
| JP4536017B2 (en) * | 2006-02-08 | 2010-09-01 | 株式会社小糸製作所 | Vehicle headlamp |
| JP6709651B2 (en) * | 2016-03-24 | 2020-06-17 | 株式会社小糸製作所 | Vehicle lamp, vehicle lamp control system, and vehicle equipped with these |
| JP6722030B2 (en) * | 2016-04-19 | 2020-07-15 | スタンレー電気株式会社 | Vehicle lighting |
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| US5068768A (en) * | 1990-03-28 | 1991-11-26 | Koito Manufacturing Co., Ltd. | Variable light distribution type automobile lamp |
| TW201219841A (en) * | 2010-11-03 | 2012-05-16 | Foxsemicon Integrated Tech Inc | Lens and light source module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110375262A (en) | 2019-10-25 |
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