WO2014094485A1

WO2014094485A1 - Semiconductor lighting lamp and lampwick

Info

Publication number: WO2014094485A1
Application number: PCT/CN2013/085034
Authority: WO
Inventors: 秦彪
Original assignee: Qin Biao
Priority date: 2012-12-20
Filing date: 2013-10-11
Publication date: 2014-06-26
Also published as: CN103883893A

Abstract

Disclosed are a semiconductor lighting lamp which has a simple structure, low manufacturing costs and significant effects, and a lampwick thereof, to solve the problem of glare. A light source light distribution lens (4) or a lampwick reflector (7) is arranged in front of an LED light source (2) such that most (more than two thirds) of the light emitted from the LED light source (2) irradiates onto a lamp reflector (3) and then is reflected outwards, so that a local superhigh luminous flux which produces glare is uniformly distributed on the large-area lamp reflector (3), effectively reducing the local luminous flux density, and hence effectively solving the problem of glare. By means of the technical solution, a standardized and universalized lampwick (including the LED light source (2), a heat-conducting plate (1) or a heat-conducting core (10), the light source light distribution lens (4) or the lampwick reflector (7) and a lampwick cover (11)) can be easily realized.

Description

Semiconductor lighting and wick

Technical field

[0001] The present invention belongs to the field of LED lighting technology, and particularly relates to a technology for reducing glare generated by LED lighting fixtures. technical background

[0002] LED light source, due to the advantages of energy saving and environmental protection, is considered to be a new generation of lighting source for human beings. The light emitted by the LED has a very high light flux density. A l X lmm LED chip can emit 1001m of light. The human eye directly looks at such a light source. Because the local density of the luminous flux is too high, a strong glare will occur. . The existing LED illumination lamp solves the glare solution: a translucent cover made of astigmatism material is arranged at the light exit port of the illumination lamp; the LED light source substrate with a large area size is used, so that the distance between the LED chips can be increased. Open, coupled with a translucent cover (using the principle of refraction, total reflection) of the translucent cover; using a mixing cavity, the light is reflected in the mixing cavity in the luminaire. It is also very important to reduce the cost of LED lighting.

[0003] The technical solutions mentioned above have the following problems: light extraction efficiency and low efficiency of the lamp, for example, the light transmittance of the astigmatism material is not high, generally 80%, the price of the astigmatism material is not low, and the translucent cover of the astigmatism material not only emits light. The efficiency is reduced, the cost is also increased; the light is reflected multiple times, and the light-emitting efficiency is also reduced; the large-sized light source substrate is not easy to realize the standardized light source module (the invention is called the wick), and the module standardization is the necessity for the development of the LED lighting product. The astigmatism efficiency of astigmatic structures is also limited; with astigmatism or astigmatism, the illumination angle (irradiation range) of the luminaire is limited, such as not available for spotlights.

Summary of the invention

[0004] The object of the present invention is to provide a technical solution for the glare problem of LED lighting, not only can effectively reduce the glare problem of LED lighting, ensure high light extraction efficiency and luminaire efficiency, and easily realize various light distribution (illumination range) And the strength), it is also easy to standardize the LED wick (optical module), and the cost of the whole lamp can be effectively reduced.

[0005] The solution proposed by the present invention: main components include: LED light source and lamp reflector, LED light source is equipped with a heat conduction plate or a heat conduction core, and heat generated by the LED light source is transmitted through the heat conduction plate or the heat conduction core, and is emitted from the LED light source. More than two-thirds of the light is incident on the reflective surface of the reflector of the luminaire, and then reflected outside the luminaire. The area of the reflective surface of the refractory of the luminaire should be more than five times the area of the substrate where the LED light source is located.

[0006] More than two-thirds of the light emitted from the luminaire is reflected from the reflective surface of the luminaire reflector, and the reflective area of the luminaire reflector is sufficiently large (the present invention proposes more than five times the area of the light source substrate), which is emitted from the luminaire The luminous flux density of light is effectively reduced, and the factor of glare is eliminated. The present invention proposes that more than three or more of the light emitted from the luminaire is reflected from the luminaire reflector, indicating that most of the light emitted from the LED source is distributed to the luminaire reflector. In order to reduce the degree of glare more effectively, the reflective area of the luminaire reflector should be larger. It is better to take more than ten times the area of the light source substrate. The proportion of light reflected from the luminaire reflector should be more, preferably 80% or more of the light is Reflected from the luminaire reflector. The reflectivity of the mirror surface is very high, and the reflection efficiency of the vacuum-coated aluminum mirror surface can reach 98%. Through the use of different reflection angles and curved surfaces, different reflective surface structures, a variety of light distribution can be achieved. [0007] A specific technical solution for implementing the above solution (ie, the technical features of the present invention): (1) A light source light distribution lens is disposed in front of the LED light source, and the LED light source is concentrated forward by using the principle of refraction and total reflection (the present invention defines the LED The illumination direction of the light source is forward. The illumination light is changed to be concentrated to the side, so that two-thirds (preferably 80%) of the light emitted from the LED light source is irradiated onto the reflector of the lamp, and then to the outside of the lamp. reflection. (2) A wick reflector is placed in front of the LED light source. Two-thirds (preferably 80%) of the light emitted from the LED source is reflected by the wick reflector to the luminaire reflector and then reflected outside the luminaire. (3) A wick cover is disposed in front of the LED light source, and the wick cover is provided with a side wall facing the refractory of the luminaire, and the side wall is provided with an astigmatism structure or a astigmatism material.

[0008] The light emitted from the LED light source has a concentrated luminous flux toward the front, and the illumination angle (irradiation range) is not high, and is generally 60° (the illumination angle in the present invention is defined as the angle between the light and the axis of the LED light source toward the front). The three specific technologies proposed by the present invention have a simple structure and are very easy to change (increase) the illumination angle of the LED light source, which can significantly reduce the luminous flux directly in front of the LED light source, and realize most (two-thirds or more) LEDs. Light from the source illuminates the refractory of the luminaire. By adopting the technical solution proposed by the invention, the LED chips in the LED light source can be concentrated to reduce the size of the LED light source substrate, which is beneficial to the standard generalization of the LED wick (including the LED light source, the heat conducting plate or the heat conducting core, etc.).

[0009] According to the technical solution of the present invention described above, three illuminating cores for semiconductor lighting are also provided, including an LED light source and a heat conducting plate or a heat conducting core, and a light source lens, or a wick reflector, or a A wick cover for astigmatic structures or materials, the specific features are:

[0010] 1. A light source light distribution lens is disposed directly in front of the LED light source, and light emitted by the LED light source is emitted through the light distribution lens of the light source, and more than two-thirds of the light has an illumination angle greater than 50°.

[001 1 ] 2. The wick cover is arranged in front of the LED light source. In front of the LED light source, a wick reflector is arranged in the wick cover. The sidewall of the wick cover adopts astigmatism structure or astigmatism material.

[0012] 3, the LED light source is provided with a wick cover in front of the LED light source, in the wick cover, a wick reflector is arranged, the light emitted from the LED light source is irradiated onto the wick reflector, part or all of which is reflected, from the wick cover The side wall is emitted, and the light emitted from the wick has more than two-thirds of the illumination angle greater than 50°.

DRAWINGS

[0013] The following description will be made in conjunction with the accompanying drawings and specific embodiments.

1 is an illumination lamp of the present invention, which uses a light source lens to change the illumination angle of light emitted from the LED light source, where h represents the height of the reflector of the lamp, and a represents the light emitted from the light distribution lens of the light source. The angle of illumination.

2 is an illumination lamp of the present invention in which a wick reflector is used to change the illumination angle of light emitted from an LED light source.

[0016] FIG. 3 is a lighting lamp of the present invention, a design of a large angle illumination range.

4 is an illumination lamp of the present invention, equipped with a wick reflector reflector angle adjustment device.

[0018] FIG. 5 is a lighting lamp of the present invention, which employs a wick (optical module) structure.

6 is a illuminating lamp of the present invention, which employs a wick cover of astigmatic structure or astigmatism material.

[0020] FIG. 7 is a wick of the present invention employing a light source lens. [0021] FIG. 8 is a wick of the present invention employing a wick reflector and equipped with a bead concentrating cup.

[0022] FIG. 9 is an illumination lamp of the present invention, equipped with a wick reflector light reflection angle adjustable device.

[0023] 1, heat conduction plate, 2, LED light source, 3, lamp reflector, 4, light source lens, 5, dotted line (for light),

6, heat sink, 7, wick reflector, 8, thimble, 9, light transmissive cover, 10, thermal core, 11, wick cover, 12, power plug, 13, lamp spotlight cup.

Specific implementation

[0024] In the illumination lamp of the present invention shown in FIG. 1, the luminaire reflector 3 is a horn-like (large horn)-shaped structure, the inner side is a reflective surface, and the LED light source 2 is disposed in the middle of the luminaire reflector 3. The luminaire reflector is made of a metal plate (preferably aluminum plate), and is used as a heat sink of the LED light source 2, and the heat conducting plate 1 is attached to the illuminator reflector 3, and the contact area between them is the contact heat transfer surface. The heat generated by the LED light source 2 is conducted through the heat conducting plate 1 to the luminaire reflector 3 made of the metal plate. In the figure, the LED light source 2 is a light source of a single LED lamp bead. The light source lens 2 is disposed directly in front of the LED light source 2. The light source lens 4 illuminates the LED light source 2 by using the principle of refraction and total reflection. The light changes to the side, so that most (more than two-thirds) of the light emitted from the LED light source 2 illuminates the inner side (reflective surface) of the luminaire reflector 3, and then reflects off the luminaire, as shown by the broken line 5 in the figure. Therefore, it is directly seen that the light intensity (light flux density) of the LED light source 2 portion is reduced. The irradiation angle a of the light irradiated from the light distribution lens 4 is as large as possible, so that the height dimension h of the lamp reflector (that is, the size of the illumination lamp) can be reduced, and thus the present invention proposes light emitted from the LED light source 2. After passing through the light distribution lens 4, more than two-thirds of the light has an illumination angle greater than 50°. In the present invention, the illumination angle of light is defined as the angle between the light (including the illumination direction) and the axis (forward) of the LED light source, as shown by the angle a in the figure.

[0025] The illumination lamp of the present invention shown in FIG. 2 is provided with a heat sink 6, and the heat generated by the LED light source 2 is transmitted to the heat sink 6 through the heat conducting plate 1, and the wick reflector 7 is disposed directly in front of the LED light source 2, The light from the LED light source 2 is incident on the wick reflector, is reflected onto the luminaire reflector 3, and is reflected off the luminaire, as indicated by the dashed line 5 in the figure. The wick reflector can be made of a transparent material, and the reflective surface is made of a translucent reflective coating. Most of the light emitted from the LED source 2 (more than two-thirds) is reflected by the wick reflector 7 to the luminaire reflector 3 Further, part of the light emitted from the LED light source 2 is uniformly emitted through the wick reflector 7, in order to make the light emitted from the lamp more uniform. It is also possible to use a plurality of small openings uniformly on the wick reflector 7, and part of the light emitted from the LED light source 2 can be emitted through the wick illuminator 7.

[0026] The illumination lamp of the present invention shown in FIG. 3 is a lamp with a large illumination angle. The lamp reflector 3 is also similar to a flare, but the reflective surface is on the outer side, and the wick reflector 7 is disposed directly in front of the LED light source 2, The illumination angle a of the light reflected by the wick reflector 7 is larger (compared to a in FIGS. 1 and 2), and can be irradiated onto the luminaire illuminator 3, and the illumination angle of the light reflected by the luminaire reflector 3 is further increased. Big. The luminaire reflector 3 of Figure 3 is also utilized as a heat sink.

[0027] The illumination lamp of the present invention shown in FIG. 4 adopts a heat conducting core 10, and the heat generated by the LED light source 2 is conducted by the heat conducting core 10, and the heat conducting core 10 is covered with a heat sink 6, and the middle portion of the light reflector 3 (small end face) Where the flange is provided, and is placed on the heat conducting core 10, the contact surface between the flange and the heat conducting core 10 is a contact heat transfer surface, and the lamp reflector 3 is made of a metal plate, which is utilized as a part of the LED light source 2 heat sink. Figure 4 shows the light exit of the luminaire reflector (that is, the light exit of the luminaire) The light transmissive cover 9 has a light transmissive cover 9 for protecting internal components (such as LED light source, reflective surface, etc.), and in order to further soften the light emitted by the lamp, the light transmissive cover 9 of the lamp can adopt an astigmatism structure. The astigmatism structure is generally a structure with uneven surface, and the reflective surface of the illuminator reflector 3 can also adopt an uneven structure to produce a diffuse reflection effect.

[0028] Adjusting the angle of the light-emitting surface of the wick reflector by adjusting the curved surface shape (curved curvature) of the light-reflecting surface, that is, adjusting the light reflection angle of the wick reflector to adjust the illumination of the light emitted from the wick illuminator The angle, and then the illumination angle (irradiation range, light intensity distribution) of the lighting fixture can be adjusted, and the illumination range of the illumination lamp can be adjusted at any time, such as concentrating light at high beam and astigmatism at low beam. Figure 4 shows a wick reflector light reflection angle adjustable device, the wick reflector 7 is composed of a plurality of curved reflectors, by adjusting the depth of the thimble 8 inserted into the wick reflector 7, the wick reflector 7 The light back surface will change, that is, the light reflection angle can be adjusted.

[0029] In the illuminating lamp of the present invention shown in FIG. 5, the heat conducting core 10 is shown to have a tapered (preferably conical) structure, which is advantageous for solving the heat transfer resistance between the heat conducting core 10 and the heat sink 6, and conducting heat conduction. The center of the core 10 is hollowed out to reduce material. The power source plug 12 of the LED light source 2 passes through the heat conducting core 10. A wick cover 11 is disposed at the front end of the LED light source 2, and the wick cover 11 is made of a light transmissive material. The side wall of the wick cover 11 can be designed to surround the front circumference of the LED light source, and the wick reflector 7 is disposed in the wick cover 11, the wick cover 11 The functions of the LED light source 2 and the wick reflector 7 are protected from dust and moisture. The LED light source 2, the wick reflector 7 and the wick cover 3 can be combined into one integral standard component - the wick. The figure also shows that the luminaire reflector 3 adopts a stepped structure, which is advantageous for reducing the height h of the luminaire reflector 3, and obtaining a large-diameter luminaire light exit opening (ie, a large-area luminaire reflector reflecting surface) , to achieve a highly concentrated lighting.

[0030] The side wall of the wick cover 11 is provided with a astigmatism material or a astigmatism structure, and is designed to face the reflective surface of the luminaire reflector 3, and can also achieve most (more than two-thirds) of the light emitted from the LED light source 2. Change direction, illuminate the reflective surface of the luminaire reflector 3, and then reflect the luminaire. The fluorescent material (such as a phosphor that turns blue light into white light) has astigmatic characteristics, so that the fluorescent layer can be disposed inside or outside the sidewall of the wick cover 11, which is both the astigmatism material of the wick cover 11 and the LED light source 2 Light conversion material (such as blue light converted to white light)

[0031] In FIG. 6, the side wall of the wick cover 11 is provided with an astigmatism material or a astigmatism structure, and is designed to be inclined rearward, so that light emitted from the side wall of the wick cover 11 is more illuminating to the luminaire reflector 3. Reflective surface. The heat conducting core 10 in Fig. 6 adopts a tapered stud structure, which is advantageous for solving the heat transfer resistance between the heat conducting core 10 and the heat sink 6, and the lamp reflector 3 in the figure is a curved curved surface.

[0032] FIG. 7 shows a wick of the present invention including an LED light source 2 and a heat conducting plate 1, and a light source lens

4, its working principle is the same as in Figure 1. In the figure, a indicates the illumination angle of the wick, and more than two-thirds of the illumination angle of the light emitted from the wick should be greater than 50°, which is beneficial to reduce the height h of the luminaire reflector (the size of the luminaire) and to ensure the majority (three More than two) The light emitted from the luminaire is emitted from the luminaire reflector. The heat conducting plate 1 can also be replaced with the heat conducting core 10 shown in Figs.

[0033] FIG. 8 shows a wick of the present invention comprising an LED light source 2, a heat conducting core 10, a wick reflector 7 and a wick cover 11, a heat conducting core 10 having a tapered (conical) structure, a heat conducting core 10 can also be replaced by the heat conduction in Figure 1, 2, 3 Board 1 structure. In the figure, a indicates the illumination angle of the wick, and more than two-thirds of the illumination angle of the light emitted from the wick should be greater than 50°, which is beneficial to reduce the height h of the luminaire reflector (the size of the luminaire), and to ensure the majority (three More than two) The light from the luminaire is emitted from the luminaire reflector. Another technical feature is also shown in FIG. 8. The LED light source 2 is provided with a lamp bead collecting cup 13, and the LED lamp bead on the LED light source 2 is condensed by the lamp bead collecting cup 13, and the irradiation angle is reduced, so that the wick is easily reflected. The light distribution design of the lamp 7 reduces the size (diameter) of the wick reflector 7 (i.e., the size of the wick). The wick shown in Fig. 9 differs from that of Fig. 8 in that: the wick shown in Fig. 9 is provided with a wick reflector light reflection adjusting device, and its structural principle is the same as that shown in Fig. 4.

[0034] The light source substrate area in the present invention is defined as: the heat transfer area of the heat conductive plate and the LED light source (substantially the area of the heat conductive plate), or the contact heat transfer area between the front end of the heat conductive core and the LED light source (basically heat conduction) Core front end area). A light source of 10 IX lmm LED chips, the diameter of the light source substrate is 20mm (the light source substrate is very small), and its area is 31 times the area of 10 LED chips. If the reflective surface of the reflector is 5 times that of the light source substrate , the luminous flux density of the luminaire can be reduced to one-fifth (a reduction of 150 times) the luminous flux density of the largest part (LED wafer IX lmm), and the reflective surface of the luminaire reflector is 10 times the substrate area of the light source. It can be reduced by 300 times, which shows that the technical solution of the invention can be very simple (low cost), and the luminous flux density is very effectively reduced, and the glare problem is solved, and the effect is remarkable.

[0035] In FIGS. 1, 3, 4 and 5, the contact heat transfer surface between the heat conducting plate 1 or the heat conducting core 10 and the luminaire reflector 3 made of a metal plate is in direct contact, in actual product design, due to structural design The indirect contact contact heat transfer surface can also be used. The fundamental purpose is to use the lamp reflector as the heat sink of the LED light source, which can reduce the cost and reduce the size of the lamp. Aluminum material, high thermal conductivity, light weight, low price, easy to press and form, so aluminum sheet is the preferred material for the manufacture of luminaire reflectors.

[0036] According to the above proposal of the present invention, more than two-thirds of the light emitted from the wick is greater than 50°, and geometric relationships can be used to calculate that more than two-thirds of the light emitted by the luminaire is reflected from the luminaire. When the reflector (3) is reflected, the height h of the luminaire reflector (3) is equal to D 2 X tan50° (D is the diameter of the light exit of the luminaire reflector) = 0.42D, plus the height of the wick. It shows that the height h of the luminaire reflector has been effectively reduced, and it can be formed by one-time drawing of the punching machine. The punching process is much higher than the spinning process, and the production efficiency is much higher. When the height h is lowered, the reflective surface of the luminaire reflector is low, and the refractory of the luminaire can be directly processed by the sheet metal processing which has been processed by the mirror surface, and the cost of the mirror processing is not required, so the cost can be reduced. The height h is reduced and the height of the entire luminaire is also reduced. When designing, it is better to choose the light emitted from the wick. More than two-thirds of the illumination angle a is greater than 70°, so that the height h can be further reduced. More light is reflected from the luminaire reflector, and the luminous flux density of the whole lamp is more Even and softer.

[0037] The local light flux density of the LED light source is extremely high, which has the disadvantage of glare, but the LED light source has the characteristics of small size and concentrated illumination direction (one-way illumination). Compared with traditional light sources (incandescent lamps, fluorescent lamps, etc.), the size is 360°, and the illumination light that people need is more than one-way illumination. The characteristics of the LED light source are superior in the light distribution of the illumination lamp. The technical solution proposed by the present invention fully utilizes the superiority of the characteristics of the LED light source, and utilizes the specular reflection effect The high optical characteristics eliminate the glare problem, the light effect of the luminaire is higher, the structure of the luminaire is simpler, the cost is lower, and it is easy to realize the light distribution of various lamps. The light distribution design of the currently disclosed LED lamp does not fully utilize the characteristics of the LED light source.

[0038] Special statement: The LED light source in the present invention includes an OLED light source.

Claims

a semiconductor illumination lamp comprising an LED light source (2) and a lamp reflector (3), the LED light source (2) is provided with a heat conduction plate (1) or a heat conduction core (10), and the LED light source (2) is disposed on the lamp In the middle of the device (3), more than two-thirds of the light emitted by the LED light source (2) is incident on the reflective surface of the luminaire reflector (3), and then reflected outside the luminaire, which is characterized by:

A light source light distribution lens (4) is arranged in front of the LED light source (2), and more than two-thirds of the light emitted from the LED light source (2) passes through the light source lens (4) to the lamp reflector (3) On the reflective surface, or

A wick reflector (7) is disposed in front of the LED light source (2), and the wick reflector (7) reflects more than two-thirds of the light from the LED light source (2) to the reflective surface of the luminaire reflector (3). , or

A wicking cover (11) is arranged in front of the LED light source (2). In front of the LED light source (2), a wick reflector (7) is arranged in the wick cover (11), and the wick cover (11) is provided with a reflector facing the luminaire ( 3) The side wall of the reflective surface, which uses an astigmatic structure or a astigmatism material.

The semiconductor illuminating lamp according to claim 1, characterized in that: the luminaire reflector (3) is made of a metal plate and is provided with a heat conducting plate (1) or a heat conducting core (10) with the LED light source (2). Contact heat transfer surface in direct or indirect contact. A semiconductor lighting lamp according to claim 1 or 2, characterized in that, when the wick reflector (7) is used, the wick reflector (7) is provided with a light reflection angle adjusting means.

A semiconductor lighting lamp according to claim 3, characterized in that the wick reflector (7) is constructed using a plurality of reflectors and is provided with a ejector pin (8) inserted into the wick reflector (7).

A semiconductor lighting lamp according to claim 1 or 2, characterized in that the luminaire reflector (3) adopts a stepped structure.

A illuminating core for semiconductor lighting, comprising an LED light source (2), a heat conducting plate (1) or a heat conducting core (10), wherein: the LED light source (2) is disposed directly with a light source light distributing lens (4), The light emitted by the LED light source (2) is emitted through the light distribution lens (4), and more than two-thirds of the light has an illumination angle greater than 50°.

A illuminating core for semiconductor lighting, comprising an LED light source (2), a heat conducting plate (1) or a heat conducting core (10), characterized in that: the LED light source (2) is provided with a wick cover (11) in front of the LED light source ( 2) In front, in the wick cover (11), a wick reflector (7) is provided, and the wick cover (11) is provided with a side wall facing the reflective surface of the luminaire reflector (3), which adopts an astigmatism structure or astigmatism material.

A wick according to claim 7, characterized in that the side wall of the wicking cover (11) is inclined rearward.

A wick according to claim 7 or 8, characterized in that a fluorescent material layer is provided inside or outside the side wall of the wick cover (11).

0. A wick for semiconductor illumination, comprising an LED light source (2), a heat conduction plate (1) or a heat conduction core (10), characterized in that: the LED light source (2) is provided with a wick cover (11), and the LED light source (2) In front, inside the wicking cover (11), a wick reflector (7) is provided, and the light emitted from the LED light source (2) is irradiated onto the wick reflector (7), and some or all of it is reflected from the wick cover ( 11) The side wall is emitted, and the light emitted from the wick has more than two-thirds of the illumination angle of more than 50°. The wick according to claim 10, characterized in that: the LED light source (2) is provided with a lamp bead (13). The wick according to claim 10 or 11, characterized in that the wick reflector (7) is provided with a light reflection angle adjustable device.

The wick according to claim 12, characterized in that the wick reflector (7) is formed by a plurality of reflectors and is provided with a thimble (8) inserted into the wick reflector (7).