CN210662713U - LED (light-emitting diode) backlighting lens and LED lamp - Google Patents
LED (light-emitting diode) backlighting lens and LED lamp Download PDFInfo
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- CN210662713U CN210662713U CN201921793484.4U CN201921793484U CN210662713U CN 210662713 U CN210662713 U CN 210662713U CN 201921793484 U CN201921793484 U CN 201921793484U CN 210662713 U CN210662713 U CN 210662713U
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Abstract
The utility model discloses a LED backlighting lens and LED lamps and lanterns, LED backlighting lens includes: a lens body; the lens body includes: a transmission cavity composed of a first transmission inner curved surface and a transmission outer curved surface; and the reflecting cavity consists of a second transmission inner curved surface, a reflecting inclined plane and a reflecting vertical plane. The utility model discloses can reduce road surface barrier and receive illuminance to reach the effect that improves tunnel environment and road surface barrier surface brightness contrast.
Description
Technical Field
The utility model relates to a lens structure technical field, concretely relates to LED backlighting lens and LED lamps and lanterns.
Background
Backlighting is understood to mean, from the direction of light, illumination in which the light source or the polarization direction is directed essentially in the direction of the observer. Generally, the brightness of sky, open road, nearby buildings and the like in the field of vision of a driver is far higher than that of a tunnel portal, and when a vehicle enters a long tunnel portal, the driver feels that the portal is dark, so that the situation of nearby portals and road obstacles cannot be recognized, namely the 'black-hole' effect.
The longer tunnel portal light distribution must ensure that the tunnel environment and the road surface obstacles in the field of view of the observer have certain brightness contrast. In the CR-14380:2003 standard, it is specified that the contrast display coefficient qc needs to be not less than 0.6, which cannot be satisfied by general symmetric illumination, and a backlight tunnel illumination needs to be applied to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the to-be-solved technical problem of the utility model is to provide a LED backlighting lens and LED lamps and lanterns for solve among the prior art technical problem that the illumination of backlighting tunnel can't satisfy the demand.
To achieve the above and other related objects, the present invention provides a LED backlighting lens, which includes: a lens body; the lens body includes: a transmission cavity composed of a first transmission inner curved surface and a transmission outer curved surface; and the reflecting cavity consists of a second transmission inner curved surface, a reflecting inclined plane and a reflecting vertical plane.
In an embodiment of the present invention, one end of the first transmission inner curved surface is integrally connected to one end of the second transmission inner curved surface; one end of the transmission outer curved surface is integrally connected with one end of the reflection inclined plane.
In an embodiment of the present invention, the first transmission inner curved surface and the second transmission inner curved surface are integrally connected with each other and the transmission outer curved surface and the reflection inclined plane are integrally connected with each other to form a downward extension line for placing the LED light source.
In an embodiment of the present invention, the first transmissive inner curved surface and the transmissive outer curved surface are free-form surfaces; the first transmission inner curved surface and the transmission outer curved surface can deflect and transmit emitted light at a certain angle.
In an embodiment of the present invention, the second transmission inner curved surface is a free-form surface; the second transmission inner curved surface deflects the emitted light at a certain angle and transmits the deflected light to the reflection inclined surface and/or the reflection vertical lifting surface.
In an embodiment of the present invention, the reflection inclined plane is provided with a refractive index to enable the total reflection of the light transmitted from the second transmission inner curved surface to the reflection vertical lifting surface, and simultaneously enable the total reflection of the light transmitted from the reflection vertical lifting surface to exit.
In an embodiment of the present invention, the reflection vertical lifting surface is used for totally reflecting the light transmitted by the second transmission inner curved surface and/or the light reflected by the reflection inclined surface to the reflection inclined surface.
To achieve the above and other related objects, the present invention provides a LED lamp, including: the LED backlighting lens and the LED light source as described above; the LED backlighting lens comprises a transmission cavity body and a reflection cavity body, wherein the transmission cavity body is composed of a first transmission inner curved surface and a transmission outer curved surface, and the reflection cavity body is composed of a second transmission inner curved surface, a reflection inclined plane and a reflection vertical plane; the LED light source is arranged on a downward extension line formed by the integral connection position of the first transmission inner curved surface and the second transmission inner curved surface and the integral connection position of the transmission outer curved surface and the reflection inclined plane.
In an embodiment of the present invention, the light emitted from the LED light source enters the transmission cavity through the deflection transmission of a certain angle generated by the first transmission inner curved surface, and the light transmitted from the transmission outer curved surface exits through the deflection transmission of a certain angle.
In an embodiment of the present invention, the light emitted from the LED light source is transmitted through the second transmission inner curved surface to generate a deflection of a certain angle and transmitted into the reflection cavity, the reflection inclined plane totally reflects the light coming from the transmission to the reflection vertical lifting surface, the reflection vertical lifting surface totally reflects the light coming from the transmission or the reflection inclined plane totally reflects the light coming from the reflection inclined plane to the reflection inclined plane, and the reflection inclined plane will reflect the light coming from the reflection vertical lifting surface and transmit the light.
As described above, the utility model discloses a LED backlighting lens and LED lamps and lanterns, LED backlighting lens includes: a lens body; the lens body includes: a transmission cavity composed of a first transmission inner curved surface and a transmission outer curved surface; and the reflecting cavity consists of a second transmission inner curved surface, a reflecting inclined plane and a reflecting vertical plane. The utility model discloses can reduce road surface barrier and receive illuminance to reach the effect that improves tunnel environment and road surface barrier surface brightness contrast.
Drawings
Fig. 1 is a schematic structural diagram of a side viewing angle of an LED backlighting lens according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a depression angle of the LED backlighting lens according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a bottom view angle of the LED backlighting lens according to the embodiment of the present invention.
Fig. 4 is a schematic view of a light distribution curve corresponding to the LED backlighting lens or the LED lamp in the embodiment of the present invention.
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 be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
To the defect in general tunnel lighting, the utility model aims at providing a LED backlighting lens can let almost all light that LED sent deflect to an orientation for back luminous flux is minimum, reduces road surface barrier and receives illuminance, in order to reach the effect that improves tunnel environment and road surface barrier surface brightness contrast.
As shown in fig. 1, a schematic side view of an LED backlighting lens according to an embodiment of the present invention is shown. As shown, the LED backlighting lens includes: a lens body 1; the lens body 1 includes:
a transmission cavity 11 composed of a first transmission inner curved surface 111 and a transmission outer curved surface 112; and the reflecting cavity 12 is composed of a second transmission inner curved surface 121, a reflecting inclined surface 122 and a reflecting vertical lifting surface 123.
In addition, fig. 2 is a schematic view of a top view of the LED backlighting lens, and fig. 3 is a schematic view of a bottom view of the LED backlighting lens.
In this embodiment, one end of the first transmissive inner curved surface 111 is integrally connected to one end of the second transmissive inner curved surface 121; one end of the transmission outer curved surface 112 is integrally connected to one end of the reflection inclined surface 122.
It should be noted that the lens body itself is an irregular cavity, and the transmission cavity 11 and the reflection cavity 12 are divided into two cavity spaces on the basis of the complete space of the lens body 1 for easy understanding and description, but it can be understood that the lens body 1 is integrally formed, that is, one end of the first transmission inner curved surface 111 is integrally connected with one end of the second transmission inner curved surface 121; one end of the transmission outer curved surface 112 is integrally connected with one end of the reflection inclined surface 122.
In this embodiment, the downward extension line formed by the integral connection between the first transmission inner curved surface 111 and the second transmission inner curved surface 121 and the integral connection between the transmission outer curved surface 112 and the reflection inclined surface 122 is used for placing the LED light source 2.
The extension line is shown in fig. 1, the LED light source may be placed on the extension line, or the extension line may be understood as a dividing line between the transmission cavity 11 and the reflection cavity 12, and the LED light source is placed on the line, so that the emitted light can be projected and/or reflected to emit to one direction (e.g. to the left in fig. 1) after entering the respective cavities, and thus almost all light emitted by the LED can be refracted to one direction, so that the amount of the emitted light is very small, and the receiving illumination of the road obstacle is reduced, so as to achieve the effect of improving the contrast between the tunnel environment and the surface brightness of the road obstacle.
In the present embodiment, the first transmissive inner curved surface 111 and the transmissive outer curved surface 112 are free-form surfaces; the first transmissive inner curved surface 111 and the transmissive outer curved surface 112 can deflect and transmit the emitted light at a certain angle.
It should be noted that, the first transmissive inner curved surface 111 and the transmissive outer curved surface 112 are selected as curved surfaces, and compared with a planar projection surface, a curved lens or a curved lens can diffuse or disperse light, so as to increase the light exit area and reduce the defect of uneven light intensity distribution, and a light pattern required for application in tunnel illumination is obtained through the combination of the first transmissive inner curved surface 111 and the transmissive outer curved surface 112.
In this embodiment, the second transmissive inner curved surface 121 is a free curved surface; the second transmissive inner curved surface 121 deflects the emitted light at an angle and transmits the deflected light to the reflective inclined surface 122 and/or the reflective vertical rising surface 123.
In the above embodiment, the second transmissive inner curved surface 121 is a free curved surface, which can also increase the light emitting area, so that more light can be projected onto the reflective inclined surface 122 and/or the reflective vertical surface 123.
In this embodiment, the reflection slope 122 has a refractive index that enables the light transmitted from the second transmission inner curved surface 121 to be totally reflected to the reflection raised surface 123, and enables the light totally reflected from the reflection raised surface 123 to be transmitted.
It should be noted that, in the present application, it is necessary that the reflection inclined plane 122 performs total reflection on the light transmitted by the second transmission inner curved surface 121, and the light reflected by the reflection raised surface 123 is projected, so that a certain refractive index is set for the reflection inclined plane 122, that is, the light with a certain incident angle is refracted. Therefore, when the incident angle between the light transmitted from the second transmission inner curved surface 121 and the reflection inclined surface 122 is smaller, the total reflection effect can be generated, and the incident angle between the light totally reflected from the reflection raised surface 123 and the reflection inclined surface 122 is larger, the light cannot be reflected but is transmitted with a certain angle.
In this embodiment, the reflective vertical rising surface 123 is configured to totally reflect the light transmitted by the second transmissive inner curved surface 121 and/or the light reflected by the reflective inclined surface 122 to the reflective inclined surface.
In the above embodiment, the reflective vertical lifting surface 123 can convert the back reflection light into the front reflection light, or convert the light emitted rightward in fig. 1 into the light emitted leftward, so that almost all the light emitted by the LEDs can be deflected to one direction, the back reflection light flux is very small, the contrast display coefficient is reduced, the receiving illuminance of the road surface obstacle is reduced, and the effect of improving the contrast between the tunnel environment and the surface brightness of the road surface obstacle is achieved
Solve the technical problem that the backlight tunnel illumination can't satisfy the demand among the prior art, the utility model also provides a LED lamps and lanterns specifically can refer to fig. 1 to fig. 3, and it includes: an LED backlight illumination lens 1 and an LED light source 2.
The LED backlighting lens 1 comprises a transmission cavity 11 consisting of a first transmission inner curved surface 111 and a transmission outer curved surface 112, and a reflection cavity 12 consisting of a second transmission inner curved surface 121, a reflection inclined plane 122 and a reflection vertical plane 123;
the LED light source 2 is disposed on a downward extension line formed by a connection point of the first transmission inner curved surface 111 and the second transmission inner curved surface 121 and a connection point of the transmission outer curved surface 112 and the reflection inclined surface 122.
In this embodiment, light emitted by the LED light source 2 is deflected at a certain angle by the first transmission inner curved surface 111 and is transmitted into the transmission cavity 11, and the transmission outer curved surface 112 deflects at a certain angle and transmits the transmitted light; and/or, light emitted by the LED light source 2 is deflected by a certain angle by the second transmission inner curved surface 121 and enters the reflection cavity 12, the reflection inclined surface 122 totally reflects the transmitted light to the reflection vertical rising surface 123, the reflection vertical rising surface 123 totally reflects the transmitted light or the light reflected by the reflection inclined surface 122 to the reflection inclined surface 122, and the reflection inclined surface 122 transmits the light reflected by the reflection vertical rising surface 123.
To sum up, LED lamps and lanterns, almost all light that can let LED in it send is bent to a direction for back luminous flux is few, reduces road surface barrier and receives illuminance, in order to reach the effect that improves tunnel environment and road surface barrier surface brightness contrast. As shown in fig. 4, a schematic diagram of a light distribution curve corresponding to the LED backlighting lens or the LED lamp is shown.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may 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 (10)
1. An LED backlighting lens, comprising: a lens body; the lens body includes:
a transmission cavity composed of a first transmission inner curved surface and a transmission outer curved surface;
and the reflecting cavity consists of a second transmission inner curved surface, a reflecting inclined plane and a reflecting vertical plane.
2. The LED backlighting lens of claim 1, wherein the first transmissive inner curved surface is integrally connected at one end to the second transmissive inner curved surface; one end of the transmission outer curved surface is integrally connected with one end of the reflection inclined plane.
3. The LED backlighting lens of claim 2, wherein the downward extension of the integral connection of the first transmissive inner curved surface and the second transmissive inner curved surface and the integral connection of the transmissive outer curved surface and the reflective angled surface is used to position the LED light source.
4. The LED backlighting lens of claim 1, wherein the first transmissive inner curved surface and transmissive outer curved surface are free-form surfaces; the first transmission inner curved surface and the transmission outer curved surface can deflect and transmit emitted light at a certain angle.
5. The LED backlighting lens of claim 1, wherein the second transmissive inner curve is a free-form surface; the second transmission inner curved surface deflects the emitted light at a certain angle and transmits the deflected light to the reflection inclined surface and/or the reflection vertical lifting surface.
6. The LED backlighting lens of claim 1, wherein the reflective sloped surface has a refractive index such that light transmitted through the second transmissive inner curved surface is totally reflected to the reflective raised surface and light totally reflected from the reflective raised surface is transmitted.
7. The LED backlighting lens of claim 1, wherein the reflective riser is configured to totally reflect light transmitted by the second transmissive inner curved surface and/or light reflected by the reflective angled surface to the reflective angled surface.
8. An LED lamp, comprising: the LED backlighting lens as recited in any one of claims 1 to 7, and an LED light source;
the LED backlighting lens comprises a transmission cavity body and a reflection cavity body, wherein the transmission cavity body is composed of a first transmission inner curved surface and a transmission outer curved surface, and the reflection cavity body is composed of a second transmission inner curved surface, a reflection inclined plane and a reflection vertical plane;
the LED light source is arranged on a downward extension line formed by the integral connection position of the first transmission inner curved surface and the second transmission inner curved surface and the integral connection position of the transmission outer curved surface and the reflection inclined plane.
9. The LED lamp of claim 8, wherein light emitted from the LED light source is transmitted into the transmissive cavity by the first transmissive inner curved surface with an angular deflection, and the transmissive outer curved surface is transmitted out by the transmissive outer curved surface with an angular deflection.
10. The LED lamp of claim 8, wherein light emitted from the LED light source is deflected by a certain angle by the second inner curved transmission surface and transmitted into the reflective cavity, the reflective slope totally reflects the transmitted light to the reflective vertical plane, the reflective vertical plane totally reflects the transmitted light or the light reflected from the reflective slope to the reflective slope, and the reflective slope transmits the light reflected from the reflective vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921793484.4U CN210662713U (en) | 2019-10-23 | 2019-10-23 | LED (light-emitting diode) backlighting lens and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921793484.4U CN210662713U (en) | 2019-10-23 | 2019-10-23 | LED (light-emitting diode) backlighting lens and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210662713U true CN210662713U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921793484.4U Active CN210662713U (en) | 2019-10-23 | 2019-10-23 | LED (light-emitting diode) backlighting lens and LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210662713U (en) |
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- 2019-10-23 CN CN201921793484.4U patent/CN210662713U/en active Active
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