High-illumination light-emitting structure and lamp

Abstract

The invention provides a high-illumination light-emitting structure which comprises a light source, a first-stage optical part and a second-stage optical part. The secondary optical part, the primary optical part and the light source are sequentially arranged from top to bottom; the first-stage optical part and the second-stage optical part are used for conducting two-stage condensation on light rays emitted by the light source in sequence. By adopting the scheme that light rays are optically condensed twice, the problem that the forward light emitting intensity of most lighting equipment is not high enough is solved.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a high-illuminance light-emitting structure and a lamp. Background Art

[0002] Light Emitting Diode (LED) has the advantages of high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long life, so it can be widely used as a light source in the field of lighting.

[0003] At present, lighting devices on the market usually use atomized lampshades to increase the uniformity of light output of lighting devices, thereby expanding the light output angle of LED components, but at the same time it will cause the problem of low forward light output intensity. If an extruded single serration design is made on the lampshade, although the light intensity is slightly improved, the problem of insufficient forward light output intensity still exists. Summary of the invention

[0004] In order to solve the above technical problems, a high-illuminance light-emitting structure is proposed in the first aspect of the present application, including: a light source, a primary optical part and a secondary optical part; the secondary optical part, the primary optical part and the light source are arranged in sequence from top to bottom; the primary optical part and the secondary optical part are used to sequentially focus the light emitted by the light source in two levels.

[0005] In this solution, during the first focusing process, the scattered light is initially converged through specific optical elements (such as convex lenses, parabolic reflectors, etc.). This causes the light that originally diverged in all directions to begin to converge to a specific area, increasing the energy density of the light. By focusing the light from a wider spatial range into a relatively small angle range, the light is reduced from escaping in the lateral and other non-frontal directions, and more light is guided into the subsequent optical path, laying the foundation for improving the intensity of the front light output.

[0006] Based on the light after the first concentration, the second concentrating element re-concentrates the light that has been initially concentrated, which can further compress the distribution range of the light and greatly increase the energy density of the light in the front direction.

[0007] After two levels of focusing, the propagation direction of light is highly adjusted and optimized, and most of the light can travel along the front light-emitting direction.

[0008] Compared with single-shot focusing, it can more effectively overcome the loss of light during propagation and the scattering problem in other directions, thereby significantly improving the intensity of the front light and making the front light brighter and more concentrated.

[0009] Specifically, the secondary optical part includes: a first secondary optical part and a second secondary optical part arranged on both sides of the first secondary optical part; the first secondary optical part forms a Fresnel sawtooth structure; the second secondary optical part forms a plurality of sawtooths, the sawtooths on the second secondary optical part are symmetrically arranged along the center line of the secondary optical part, and the sawtooths on the second secondary optical part have different tooth heights from top to bottom.

[0010] Specifically, the shape of the primary optical part is a linear step; the outer arc surface and the inner arc surface of the primary optical part are formed with a plurality of saw teeth.

[0011] Specifically, the secondary optical part adopts transparent light-transmitting material; the primary optical part adopts high-fog transparent material. The primary optical part made of high-fog transparent material can scatter and diffusely reflect light, so that light that may have been absorbed or blocked has the opportunity to be emitted, thereby increasing the possibility and amount of frontal light emission as a whole, and improving the frontal light emission intensity.

[0012] Specifically, the saw teeth on the outer arc surface and the saw teeth on the inner arc surface of the primary optical part have different spacings.

[0013] Specifically, the saw teeth on the outer arc surface of the primary optical part and the saw teeth on the inner arc surface have different spacings.

[0014] The above technical solution avoids multiple interface reflections of LED light in the structural layer of the stripe inner cover, thereby improving the light extraction efficiency of the double-layer sawtooth stripes.

[0015] Specifically, the shape of the primary optical part is an arc-shaped semicircular arc; the shape of the primary optical part is an arc-shaped semicircular arc; the outer arc surface of the primary optical part is formed with multiple saw teeth, and the inner arc surface is a smooth semicircular arc.

[0016] In a second aspect of the present application, a high-illuminance lamp is provided, comprising the light-emitting structure as described above and a base; the light-emitting structure is fixed on the base.

[0017] Specifically, a card slot is formed in the base; the light source includes a light source board; the card slot is used to fix the light source board; the light source board includes a circuit board and a light emitting diode arranged on the circuit board.

[0018] Specifically, the light source setting positions include: 1 / 4R, 1 / 5R, 1 / 7R and 1 / 9R, wherein R is the radius of a circle formed by the base and the secondary optical part.

[0019] Adding a double-layer optical nested structure with a transparent Fresnel sawtooth outer cover and a semi-atomized stripe inner cover has the following effects on improving the front light intensity:

[0020] To increase the chance of light emission, the transparent Fresnel sawtooth outer cover can refract and transmit more light from different angles, providing more emission paths for the light. The semi-atomized striped inner cover can scatter and diffusely reflect the light, so that the light that might have been absorbed or blocked can also have the opportunity to emit, thereby generally increasing the possibility and amount of frontal light emission and improving the frontal light emission intensity.

[0021] By changing the direction of light propagation, the Fresnel sawtooth structure can refract and converge light in a specific direction. Through the precisely designed sawtooth shape and angle, the light originally scattered in all directions can be guided to a more concentrated direction, especially in the front direction. The stripe structure of the semi-atomized stripe inner cover can also guide the propagation of light to a certain extent, so that when the light passes through the inner cover, it propagates more in a direction that is conducive to the front light, thereby increasing the intensity of the front light.

[0022] Reduce light loss and absorption, the transparent outer cover ensures a high light transmittance and reduces the loss of light during propagation. Although the semi-atomized inner cover will have a certain scattering effect on the light, compared with the material that completely absorbs the light, it reduces the proportion of light that is completely absorbed while ensuring a certain scattering effect to improve the uniformity of light output, so that more light can eventually be emitted from the front, which helps to improve the intensity of light output from the front.

[0023] Improve the efficiency of light utilization. This double-layer optical nested structure manages and guides light more effectively through the synergy of the outer cover and the inner cover. It enables the light emitted from the light source to be more fully utilized, reduces the disordered propagation and loss of light inside, and guides more light to the front light output direction, thereby improving the intensity and efficiency of the front light output as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and are used together with the description to explain the principles of the present application. It will be easy to recognize other embodiments and many expected advantages of the embodiments because they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar parts.

[0025] Figure 1 is a structural schematic diagram of a high-illuminance lamp according to an embodiment of the present application;

[0026] Figure 2 is a cross-sectional view of a high-illuminance lamp according to the first embodiment of the present application;

[0027] Figure 3is a cross-sectional view of a high-illuminance lamp according to a second embodiment of the present application;

[0028] Figure 4 is a cross-sectional view of a high-illuminance lamp according to a third embodiment of the present application;

[0029] Figure 5 is a cross-sectional view of a high-illuminance lamp according to a fourth embodiment of the present application;

[0030] Figure 6 is a cross-sectional view of a high-illuminance lamp according to a fifth embodiment of the present application;

[0031] Figure 7 is a cross-sectional view of a high-illuminance lamp according to a sixth embodiment of the present application;

[0032] Figure 8 is a light distribution curve diagram of a high-illuminance lamp according to the fifth embodiment of the present application;

[0033] Fig. 9 is a light distribution curve diagram of a high-illuminance lamp according to the sixth embodiment of the present application;

[0034] Fig.10 is a light distribution curve diagram of a high-illuminance lamp according to the first embodiment of the present application;

[0035] Fig.11 This is a light distribution curve diagram of a high-illuminance lamp according to the second embodiment of the present application.

[0037] 1. Lamp; 2. Lamp holder; 3. Lampshade; 4. Base; 5. Primary optical part; 6. Light source board; 31. First and second optical parts; 32. Second and second optical parts; 41. Card slot; 61. Circuit board; 62. Light emitting diode. DETAILED DESCRIPTION

[0038] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by illustrative specific embodiments in which the present application can be practiced. To this end, directional terms, such as "top", "bottom", "left", "right", "up", "down", etc., are used with reference to the orientation of the figures described. Because the components of the embodiments can be positioned in several different orientations, directional terms are used for the purpose of illustration and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be adopted in a limiting sense, and the scope of the present application is defined by the appended claims.

[0039] like Figure 1-Figure 6As shown, in the first aspect of the present application, a high-illuminance light-emitting structure is proposed, comprising: a light source, a primary optical part 5 and a secondary optical part; the secondary optical part, the primary optical part 5 and the light source are arranged in sequence from top to bottom; the primary optical part 5 and the secondary optical part are used to sequentially focus the light emitted by the light source in two stages.

[0040] In this solution, during the first focusing process, the scattered light is initially converged through specific optical elements (such as convex lenses, parabolic reflectors, etc.). This causes the light that originally diverged in all directions to begin to converge to a specific area, increasing the energy density of the light. Reduce lateral light loss: Concentrate the light from a wider spatial range into a relatively small angle range, reducing the light's escape in the lateral and other non-frontal directions, and more light is guided into the subsequent optical path, laying the foundation for improving the intensity of the front light output.

[0041] The second focusing further enhances the energy density: Based on the light after the first focusing, the second focusing element re-converges the light that has been initially concentrated. This can further compress the distribution range of the light, greatly increasing the energy density of the light in the front direction.

[0042] Improve the front light output efficiency: After two levels of focusing, the propagation direction of the light is highly adjusted and optimized, and most of the light can travel along the front light output direction.

[0043] Compared with single-shot focusing, it can more effectively overcome the loss of light during propagation and the scattering problem in other directions, thereby significantly improving the intensity of the front light and making the front light brighter and more concentrated.

[0044] Specifically, the secondary optical part adopts transparent light-transmitting material; the primary optical part 5 adopts highly atomized transparent material. The primary optical part 5 made of highly atomized transparent material can scatter and diffusely reflect light, so that light that might have been absorbed or blocked has the opportunity to be emitted, thereby generally increasing the possibility and amount of frontal light emission and improving the frontal light emission intensity.

[0045] Specifically, the secondary optical part includes: a first secondary optical part 31 and a second secondary optical part 32 arranged on both sides of the first secondary optical part 31; the first secondary optical part 31 is formed with a Fresnel sawtooth structure; the second secondary optical part 32 is formed with a plurality of sawtooths, and the sawtooths on the second secondary optical part 32 are symmetrically arranged along the center line of the secondary optical part, and the sawtooths on the second secondary optical part 32 have different tooth heights from top to bottom.

[0046] Specifically, the shape of the primary optical part 5 is a linear step; the outer arc surface and the inner arc surface of the primary optical part 5 are formed with a plurality of saw teeth.

[0047] Specifically, the saw teeth on the outer arc surface and the saw teeth on the inner arc surface of the primary optical part 5 have different spacings.

[0048] Specifically, the saw teeth on the outer arc surface of the primary optical part and the saw teeth on the inner arc surface have different spacings.

[0049] The above technical solution avoids multiple interface reflections of LED light in the structural layer of the stripe inner cover, thereby improving the light extraction efficiency of the double-layer sawtooth stripes.

[0050] Specifically, the shape of the primary optical portion 5 is an arc-shaped semicircular arc; the shape of the primary optical portion 5 is an arc-shaped semicircular arc; the outer arc surface of the primary optical portion 5 is formed with a plurality of saw teeth, and the inner arc surface is a smooth semicircular arc.

[0051] In the second aspect of the present application, a high-illuminance lamp 1 is proposed, comprising the light-emitting structure as described above, a base 4 and a lamp holder 2 ; the light-emitting structure is fixed on the base 4 ; and the lamp holder 2 is installed on both sides of the base 4 .

[0052] Specifically, a slot 41 is formed in the base 4 ; the light source includes a light source board 6 ; the slot 41 is used to fix the light source board 6 ; the light source board 6 is composed of a circuit board 61 and a light emitting diode 62 disposed on the circuit board 61 .

[0053] Specifically, the light source setting positions include: 1 / 4R, 1 / 5R, 1 / 7R and 1 / 9R, wherein R is the radius of the circle formed by the base 4 and the secondary optical part.

[0054] The lamp holder 2 is equipped with a conductive PIN pin for inputting power supply, and the lamp holder 2 is also equipped with an AC to DC module for converting the input AC power supply into a DC power supply output;

[0055] The base 4 is formed with a slot 41; the light source board 6 is fixed in the slot 41; the light source board 6 includes a circuit board 61 and a plurality of light emitting diodes 62;

[0056] After the PIN pin is energized, the light-emitting diode 62 lights up, and the optical fiber undergoes the first optical focusing through the primary optical part 5, and then undergoes the second optical focusing through the first and second optical parts 31 and the second and second optical parts 32. The method of optical focusing twice solves the problem of insufficient forward light intensity, and meets the needs of increasing brightness and light efficiency in specific areas in special scenarios.

[0057] In addition, different locations of the light source plate 6 and different structures of the primary optical part 5 can achieve different lighting effects, which are described below through several embodiments.

[0058] like Figure 2As shown, in the first embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, which are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes uniformly from top to bottom. The light source board 6 is installed in the card slot 41, and the installation position of the light source board 6 is 1 / 7R away from the bottom end of the base 4; the first optical part 5 is in the shape of a linear step; the outer arc surface and the inner arc surface of the first optical part 5 are formed with a plurality of sawtooths, and the spacing between the sawtooths on the outer arc surface is greater than the spacing between the sawtooths on the inner arc surface.

[0059] In this embodiment, the light source emitted by the light emitting diode 62 is optically concentrated twice, so that when 3000 lm of light passes through, the illumination angle is 49° and the illumination at the 3M position reaches 359LX. At this time, the optical efficiency is 72 lm / W.

[0060] Further, such as Fig.10 Reflecting the light distribution curves of the lamp in this embodiment on the horizontal and vertical planes, it can be seen that the strongest light intensity is between 0 and 10 degrees, and as the angle of incidence increases, the light intensity decreases continuously; this embodiment greatly improves the front light intensity and light uniformity of the LED lamp. More specifically, in this embodiment, the maximum light intensity value is 1478.6cd.

[0061] like Figure 3 As shown, in the second embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, which are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes evenly from top to bottom. The light source board 6 is installed in the card slot 41, and the installation position of the light source board 6 is 1 / 9R away from the bottom end of the base 4; the primary optical part 5 is in the shape of a linear step; the outer arc surface and the inner arc surface of the primary optical part 5 are formed with a plurality of sawtooths, and the spacing between the sawtooths on the outer arc surface is greater than the spacing between the sawtooths on the inner arc surface, and the sawtooths on the outer arc surface of the primary optical part and the sawtooths on the inner arc surface have different spacings.

[0062] In this embodiment, the light source emitted by the light emitting diode 62 is optically concentrated twice, so that when 3000 lm of light passes through, the illumination angle is 53° and the illumination at the 3M position reaches 279LX. At this time, the optical efficiency is 75 lm / W.

[0063] Further, such as Fig.11Reflecting the light distribution curves of the lamp in this embodiment on the horizontal and vertical planes, it can be seen that the strongest light intensity is between -10 and 10 degrees, and as the angle increases, the light intensity decreases; this embodiment greatly improves the front light intensity and light uniformity of the LED lamp. More specifically, in this embodiment, the maximum light intensity value is 1404.1cd.

[0064] like Figure 4 As shown, in the third embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, and the sawtooths are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes uniformly from top to bottom. The light source board 6 is installed in the card slot 41, and the installation position of the light source board 6 is 1 / 7R away from the bottom end of the base 4; the shape of the primary optical part 5 is an arc-shaped semicircular arc; the outer arc surface of the primary optical part 5 is formed with a plurality of sawtooths, and the inner arc surface is a smooth semicircular arc.

[0065] In this embodiment, the light source emitted by the light emitting diode 62 is optically focused twice, so that when 3000lm of light passes through, a lighting angle of 56° is achieved and the illumination at the 3M position reaches 278LX.

[0066] like Figure 5 As shown, in the fourth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, which are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes uniformly from top to bottom. The light source board 6 is installed in the card slot 41, and the installation position of the light source board 6 is 1 / 9R away from the bottom end of the base 4; the shape of the primary optical part 5 is an arc-shaped semicircular arc; the outer arc surface of the primary optical part 5 is formed with a plurality of sawtooths, and the inner arc surface is a smooth semicircular arc.

[0067] In this embodiment, the light source emitted by the light emitting diode 62 is optically focused twice, so that when 3000 lm of light passes through, a lighting angle of 59° is achieved and the illumination at the 3M position reaches 206 LX.

[0068] like Figure 6As shown, in the fifth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, which are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes uniformly from top to bottom. The light source board 6 is installed in the slot 41, and the installation position of the light source board 6 is 1 / 4R away from the bottom end of the base 4; the first optical part 5 is in the shape of a linear step; the outer arc surface and the inner arc surface of the first optical part 5 are formed with a plurality of sawtooths, and the spacing between the sawtooths on the outer arc surface is greater than the spacing between the sawtooths on the inner arc surface.

[0069] Further, such as Figure 8 Reflecting the light distribution curves of the lamp in this embodiment on the horizontal and vertical planes, it can be seen that the strongest light intensity is between -10 and 0 degrees, and as the angle of incidence increases, the light intensity decreases continuously; this embodiment greatly improves the front light intensity and light uniformity of the LED lamp. More specifically, in this embodiment, the maximum light intensity value is 1621.3cd.

[0070] In this embodiment, the light emitted by the light emitting diode 62 is optically concentrated twice, and the optical efficiency is 69.8 lm / W.

[0071] like Figure 7 As shown, in the sixth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel sawtooth. Specifically, the first and second optical parts 31 are Fresnel sawtooth structures, and the second and second optical parts 32 are provided with a plurality of sawtooths, the sawtooths are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the sawtooth changes uniformly from top to bottom. The light source board 6 is installed in the card slot 41, and the installation position of the light source board 6 is 1 / 5R away from the bottom end of the base 4; the first optical part 5 is in the shape of a linear step; the outer arc surface and the inner arc surface of the first optical part 5 are formed with a plurality of sawtooths, and the spacing between the sawtooths on the outer arc surface is greater than the spacing between the sawtooths on the inner arc surface.

[0072] In this embodiment, the light emitted by the light emitting diode 62 is optically concentrated twice, and the optical efficiency is 71 lm / W.

[0073] Further, such as Fig. 9 Reflecting the light distribution curves of the lamp in this embodiment on the horizontal and vertical planes, it can be seen that the strongest light intensity is at 0 degrees, and as the angle increases, the light intensity decreases; this embodiment greatly improves the front light intensity and light uniformity of the LED lamp. More specifically, in this embodiment, the maximum light intensity value is 1533.7cd.

[0074] The lampshade, base and primary optical part in the above 6 embodiments can be made of two-color extrusion process. In addition, the base 4 and the primary optical part 5 are high-atomization materials with a transmittance greater than 97%. Through the optical and light source matching design of the above-mentioned lampshade 3, a high-transmittance atomization striped inner cover with a mist transmittance greater than 97% can be used, and then a fully transparent Fresnel serrated outer cover can be used to achieve the optical effect of concentrated light intensity, while improving the light efficiency.

[0075] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalents, the present application is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recorded in mutually different dependent claims does not indicate that the combination of these measures cannot be used to profit. Any figure mark in the claims should not be considered to limit the scope.

Claims

1. A high-illuminance light-emitting structure, comprising: Light source, primary optical section and secondary optical section; The secondary optical part, the primary optical part and the light source are arranged in sequence from top to bottom; the primary optical part and the secondary optical part are used to sequentially perform two-stage focusing on the light emitted by the light source.

2. The high-illuminance light-emitting structure according to claim 1, characterized in that: The secondary optical part includes: a first secondary optical part and a second secondary optical part arranged on both sides of the first secondary optical part; the first secondary optical part forms a Fresnel sawtooth structure; the second secondary optical part forms a plurality of sawtooths, the sawtooths on the second secondary optical part are arranged symmetrically along the center line of the secondary optical part, and the sawtooths on the second secondary optical part have different tooth heights from top to bottom.

3. The high-illuminance light-emitting structure according to claim 1, characterized in that: The shape of the primary optical part is a linear step; the outer arc surface and the inner arc surface of the primary optical part are formed with a plurality of saw teeth.

4. The high-illuminance light-emitting structure according to claim 1, characterized in that: The secondary optical part adopts transparent light-transmitting material; the primary optical part adopts atomized light-transmitting material.

5. The high-illuminance light-emitting structure according to claim 4, characterized in that: The saw teeth on the outer arc surface of the primary optical part and the saw teeth on the inner arc surface have different spacings.

6. The high-illuminance light-emitting structure according to claim 5, characterized in that: The spacing between the outer arc surface teeth is greater than the spacing between the inner arc surface teeth.

7. The high-illuminance light-emitting structure according to any one of claims 1 to 6, characterized in that: The shape of the primary optical part is an arc-shaped semicircular arc; the outer arc surface of the primary optical part is formed with multiple serrations, and the inner arc surface is a smooth semicircular arc.

8. A high-illuminance lamp, comprising the light-emitting structure according to any one of claims 1 to 7 and a base; the light-emitting structure is fixed on the base.

9. The high-illuminance lamp according to claim 8, characterized in that: A card slot is formed in the base; the light source includes a light source board; the card slot is used to fix the light source board; the light source board includes a circuit board and a light emitting diode arranged on the circuit board.

10. The high-illuminance lamp according to claim 9, characterized in that: The light source setting positions include: 1 / 4R, 1 / 5R, 1 / 7R and 1 / 9R, wherein R is the radius of a circle formed by the base and the secondary optical part.

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