CN102080792B - Reflection type light-emitting diode (LED) cyclorama light - Google Patents

Reflection type light-emitting diode (LED) cyclorama light Download PDF

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Publication number
CN102080792B
CN102080792B CN201010619913.3A CN201010619913A CN102080792B CN 102080792 B CN102080792 B CN 102080792B CN 201010619913 A CN201010619913 A CN 201010619913A CN 102080792 B CN102080792 B CN 102080792B
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led
light
light source
reflector
backdrop
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CN102080792A (en
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刘宝旺
蒋金波
甄何平
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Beijing Xingguang Film and TV Equipment Technologies Co Ltd
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Beijing Xingguang Film and TV Equipment Technologies Co Ltd
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Abstract

The invention discloses a reflection type light-emitting diode (LED) cyclorama light. The reflection type LED cyclorama light comprises an LED light source (1), a base board (2) provided with a control circuit, and a light-reflecting board (4), wherein the LED light source (1) is arranged on the base board (2); the base board (2) is fixed on the light-reflecting board (4); and the light-emitting direction of the LED light source (1) faces the light-reflecting board (4) and the arrangement position of the LED light source (1) leans to one side of the light-reflecting board (4), so that the light emitted to a light high-density range of the light-reflecting board is reflected to one side, which is far away from the LED light source (1), of a lighted object, and the light emitted to a light low-density range of the light-reflecting board is reflected to one side, which is close to the LED light source (1), of the lighted object. The reflection type LED cyclorama light can generate an asymmetric light field with uniform illumination in each distance.

Description

Reflective LED backdrop lamp
Technical Field
The invention relates to a reflective LED backdrop lamp for movie and television stage lighting, and belongs to the technical field of movie and television stage lamps.
Background
The backdrop lamp is an essential lamp for stage light distribution in theaters and studios. The stage awning can be irradiated in a large area to enable the awning to be bright, the background to be gorgeous and the performance effect to be increased, and the performance is more vigorous. At present, various types of backdrop lamps are used on stages, and most of the backdrop lamps adopt halogen tungsten lamp light sources. The halogen tungsten lamp is a heat light source, about 90% of consumed electric energy is converted into heat energy, and about 10% of consumed electric energy is converted into visible light. In order to obtain sufficient brightness and meet the requirements of stage lighting, the number of lamps is increased and the power of bulbs is increased. Therefore, the indoor environment temperature is too high, and the requirements of energy conservation and environmental protection are not met.
LEDs (light emitting diodes) have been widely used in various fields due to their outstanding advantages of high luminous efficiency, energy saving, environmental protection, long service life, and the like. At present, LED lamps are also beginning to be applied to stage lighting such as a backdrop lamp, a spotlight, a projection lamp, etc. required in stage movie theaters and stage performances.
With the development and application of the LED, people develop a high-power LED dome lamp. In chinese utility model patent No. ZL200820233849.3, a high-power LED sky screen lamp suitable for multiple sites such as theatre, studio uses is disclosed, be equipped with special design's three dog-ear on the lamp body installation face, make the lamp body installation face form four installation faces that the angle is different, be equipped with the mounting hole of evenly arranging on every installation face, single LED has been installed in every mounting hole, wherein the first installation face is installed the LED that the beam angle is 12, the second installation face is installed the LED that the beam angle is 24, the third installation face is installed the LED that the beam angle is 36, the fourth installation face is installed the LED that the beam angle is 60.
However, the high-power LED canopy light uses LED light source modules with different beam angles to be mounted on different mounting surfaces to generate asymmetric light fields to meet the stage lighting requirements, and has the disadvantage that when a light fixture is manufactured, LED light sources with various beam angles must be selected to be mounted on mounting surfaces with different break angles, which brings a certain trouble to the production and manufacturing. And the light sources of the light outlets of all the backdrop lamps are direct lights, so that the players who contact with the backdrop lamps at a close distance have dazzling feelings. In addition, although the power of the LED is low, a point light source formed by the LED is very dazzling, and dazzling glare is very easy to generate. The light-emitting device made of the LED is used for indoor illumination and is close to a human body, so that the eye stimulation is severe, and the eye injury is easily caused.
Therefore, there is an urgent need in the market to develop a reflective LED lamp capable of making the illumination at various distances uniform to meet the requirement of the stage awning lamp for illuminating an asymmetric light field.
Disclosure of Invention
The invention aims to provide a reflective LED backdrop lamp. The reflective LED backdrop lamp can enable illumination of various distances on a stage to be uniform.
In order to achieve the purpose, the invention adopts the following technical scheme:
a reflective LED backdrop lamp comprises an LED light source 1, a substrate 2 provided with a control circuit and a reflector 4, wherein the LED light source 1 is arranged on the substrate 2, and the substrate 2 is fixed on the reflector 4; wherein,
the light emitting direction of the LED light source 1 faces the reflector 4, and the installation position of the LED light source 1 is deviated to one side of the reflector 4, so that the light in the high-density range of the light emitted to the reflector is reflected to one side of the illuminated object far away from the LED light source 1, and the light in the low-density range of the light emitted to the reflector is reflected to one side of the illuminated object near the LED light source 1.
The reflective LED dome lamp provided by the invention forms a linear light source by a single row of LEDs, irradiates a reflector by utilizing a light reflection principle, forms an asymmetric light field after reflection, can ensure that the light source does not directly irradiate an irradiated object, has no direct light as the light source of the lamp, prevents dazzling and is beneficial to stage performance, and has the advantages of energy conservation, environmental protection and low cost.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of a reflective LED backdrop lamp according to the present invention;
FIG. 2 is a side view of the reflective LED backdrop lamp of FIG. 1;
FIG. 3 is an optical schematic diagram of a reflective LED backdrop lamp;
fig. 4 is an enlarged schematic view of a portion I in fig. 3.
The reference numbers in the figures illustrate: 1: an LED light source; 2: a substrate; 3: the high-density area LED light source is incident light; 3': the high-density area LED light source reflects light; 4: a reflector; 5: the high-density area LED light source is incident light; 5': the high-density area LED light source reflects light; 6: low-density area LED light source incident light; 6': the LED light source in the low-density area reflects light; 7: low-density area LED light source incident light; 7': the LED light source in the low-density area reflects light; 8: a backdrop; 9: a side reflector.
Detailed Description
The reflective LED backdrop lamp is characterized in that a plurality of LEDs are arranged in a single line in a single row and irradiate the reflector, so that the reflected light of the reflector forms an asymmetric light field with similar short-distance and long-distance irradiation light intensity on an irradiated object.
Referring to fig. 1 and 2, the reflective LED backdrop lamp includes an LED light source 1, a substrate 2, a reflector 4, and a side reflector 9. The side reflecting plate 9 may be formed integrally with the reflecting plate 4, and is collectively referred to as the reflecting plate 4. Only the form in which both are formed separately will be described in this embodiment.
The LED light source 1 is formed by horizontally arranging a plurality of LEDs at equal intervals and vertically mounting the LEDs on a substrate 2. Moreover, the heads of the LEDs face the reflector 4, perpendicular to the substrate 2. In the present embodiment, the LED light source 1 is mounted on the substrate 2 by soldering, but may be mounted by other means depending on the form of LED leads. For example, a corresponding number of clips arranged at equal intervals are formed in advance on the substrate 2, and the LED light source 1 is held and electrically connected to the substrate 2 by the metal clips as necessary, so that the LED can be conveniently replaced. Of course, a metal clip may be used instead of the clip.
The substrate 2 is electrically connected to the LED light source 1. Because of the adoption of the aluminum material, the heat dissipation is convenient. Those skilled in the art will appreciate that other conductive materials may be used even if aluminum is not used. The substrate 2 is provided with a control circuit for controlling the on and off of the LED light source 1.
The reflector 4 is an arc-shaped plate having a length corresponding to the arrangement length of the LED light sources 1. The bottom edge of the arc is connected to the bottom edge of the substrate 2 and the LED heads are located between the substrate and the reflector and towards the reflector 4. It will be appreciated that the base plate need only be attached to the reflector, and that it is not necessary to join the bottom edge of the reflector 4 to the bottom edge of the base plate 2 as in the present embodiment. Thus, the LED light source 1 is located between the upper and lower sides of the reflector 4.
Two side reflecting plates 9 with planes with the same arc edges as the reflecting plates 4 are arranged on the left side and the right side of the reflecting plates 4, and form a reflector together with the reflecting plates 4. The reflecting plate 4 and the side reflecting plate 9 are made of the same material, and the surface facing the light source is a reflecting surface. The light reflecting surface can be specially treated, such as optical material (such as fluorescent powder) attachment, mirror surface polishing and the like; it is also possible to increase the light reflectivity by choosing reflectors of a material with a high reflectivity.
The position of the LED light source 1 in the reflector enables the LED reflected light to be reflected to the illuminated object to obtain a uniform asymmetric light field. In one embodiment of the present invention, as shown in fig. 2, the arc opening of the reflector is 178.794mm, the position of the LED light source 1 is at point C of the mounting position of the substrate 2, the connection point of the substrate 2 and the reflector 4 is point D, and the distance between point C and point D is 26mm, which is the best design solution.
The working principle of the reflective LED backdrop lamp is described in detail with reference to FIGS. 3 and 4.
The reflector 4 is made according to a special curve, preferably curved. But not limited thereto, for example, an asymmetric ballistic shape is also possible. The light reflected by the reflecting surface can be projected on the illuminated object through optical calculation to obtain a uniform asymmetric light field.
The LED light source 1 is installed at a specific position deviated from the symmetrical plane of the symmetrical shape of the reflector 4, i.e., deviated to one side of the reflector, so that the light density of the reflector near the light source is high (3-5 high density region) and the light density of the reflector far from the light source is low (6-7 low density region). The high reflection light of density shines in the long-range scope of curtain (B section curtain) near the light source, and the low reflection light of density shines in the curtain closely position (A section curtain) far away from the light source, and B section curtain scope is about 6 times of A section curtain scope, and same B section curtain illumination also is about 6 times of A section curtain, forms the large tracts of land and shines and make whole curtain illuminance even.
As shown in fig. 3, the LED light source 1 irradiates the reflector 4, at the position where the reflector is close to the LED light source 1, at one end of the reflector light high density range, the incident light 3 irradiates the reflector, and the reflected light 3' is reflected to the B-segment curtain wall of the canopy 8. The incident light 5 irradiates the other end of the high-density range of the light of the reflector, and the reflected light 5' is still reflected to the B-section curtain wall of the backdrop 8. The position of the reflector far away from the LED light source 1 and one end of the reflector light low-density range, the incident light 6 irradiates the reflector, and the reflected light 6' is reflected to the section A curtain wall of the backdrop 8. At the other end of the low-density range of the light of the reflector, the incident light 7 irradiates the reflector, and the reflected light 7' is still reflected to the section A curtain wall of the backdrop 8. Therefore, a plurality of LEDs are irradiated in an interactive mode and reflected to the backdrop 8 to form an asymmetrical light field with uniform illumination in a large range, namely an A-section curtain wall and a B-section curtain wall on the backdrop 8.
The invention uses the light reflection principle, the reflector is a specific curve, and the light emitted by the LED light source is reflected to the illuminated object, so that the illuminating surface with a wide area is obtained. The reflective LED backdrop lamp manufactured by the principle is applied to a movie stage and can replace the traditional backdrop lamp. The reflective LED backdrop lamp has no direct light and low glare, and the LED light source can not be seen from the front of the lamp, so that dazzling glare can not be generated.
The reflective LED backdrop lamp provided by the present invention has been described in detail, but it is obvious that the specific implementation form of the present invention is not limited thereto. It will be apparent to those skilled in the art that various obvious changes may be made therein without departing from the scope of the invention as defined in the appended claims.

Claims (6)

1. The utility model provides a reflective LED backdrop lamp, includes LED light source (1), is equipped with control circuit's base plate (2) and reflector panel (4), install LED light source (1) on base plate (2), base plate (2) are fixed on reflector panel (4), its characterized in that:
the reflector (4) is of an arc or asymmetric ballistic shape;
the LED light source (1) comprises a plurality of LEDs which are arranged in a straight line, a plurality of clamping pieces which are arranged at equal intervals are formed on the substrate (2) in advance, and the LEDs are clamped by the clamping pieces and are electrically connected to the substrate (2);
the light emitting direction of the LED light source (1) faces the reflector (4), and the installation position of the LED light source is deviated to one side of the reflector (4), so that the light in the high-density range of the light emitted to the reflector is reflected to one side of the illuminated object far away from the LED light source (1), and the light in the low-density range of the light emitted to the reflector is reflected to one side of the illuminated object near the LED light source (1).
2. The reflective LED backdrop lamp of claim 1, wherein:
when the reflector (4) is arc-shaped, the LED light source (1) is close to one side of the arc and far away from the opposite side of the arc.
3. The reflective LED backdrop lamp of claim 1, wherein:
the bottom edge of the reflecting plate (4) is connected with the bottom edge of the base plate (2).
4. The reflective LED backdrop lamp of claim 1, wherein:
the reflective LED backdrop lamp further comprises side reflecting plates (9) connected with two ends of the reflecting plates (4), two sides of the substrate (2) are connected with the side reflecting plates (9), and the bottom edges of the substrate are connected with the reflecting plates (4).
5. The reflective LED backdrop lamp of claim 1, wherein:
the LED light source (1) is positioned between the upper side and the lower side of the reflector.
6. The reflective LED backdrop lamp of claim 1, wherein:
when the arc opening of the reflector (4) is 178.794mm, the installation position of the LED light source (1) on the substrate (2) is point C, the connection point of the substrate (2) and the reflector (4) is point D, and the distance between the point C and the point D is 26 mm.
CN201010619913.3A 2010-12-31 2010-12-31 Reflection type light-emitting diode (LED) cyclorama light Active CN102080792B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201010619913.3A CN102080792B (en) 2010-12-31 2010-12-31 Reflection type light-emitting diode (LED) cyclorama light

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CN102080792B true CN102080792B (en) 2014-11-12

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102927502B (en) * 2012-11-09 2016-05-04 上海理工大学 A kind of high-power LED strip-light lamp based on penalty method
US10378730B2 (en) 2016-11-03 2019-08-13 Electronic Theatre Controls, Inc. Cyc light
CN111076117A (en) * 2019-12-25 2020-04-28 胡培佳 Split type shadowless lighting system composed of light source group and large-area backdrop reflector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6220731B1 (en) * 1998-11-10 2001-04-24 Altman Stage Lighting Co., Inc. Cyclorama light
US20090296383A1 (en) * 2005-05-25 2009-12-03 Koninklijke Philips Electronics N.V. Illumination system, shelf-lighting system and wall-washer lighting system
CN201326957Y (en) * 2008-12-29 2009-10-14 北京星光影视设备科技股份有限公司 High-power LED strip-light lamp
TWM371086U (en) * 2009-06-03 2009-12-21 Depo Auto Parts Ind Co Ltd Illumination apparatus for vehicle
CN101922678B (en) * 2009-06-10 2011-11-16 上海三思电子工程有限公司 Design method of small angle projection lamp reflection surface
CN202032384U (en) * 2010-12-31 2011-11-09 北京星光影视设备科技股份有限公司 Reflection-type LED cyclorama light

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