CN202473048U

CN202473048U - Demonstrating instrument based on high-brightness LED (light-emitting diode) tricolor theory

Info

Publication number: CN202473048U
Application number: CN2012201081002U
Authority: CN
Inventors: 高善坤; 徐忠根; 赵利平
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-15
Filing date: 2012-03-15
Publication date: 2012-10-03
Anticipated expiration: 2022-03-15

Abstract

A demonstrating instrument based on the high-brightness LED (light-emitting diode) tricolor theory, which can enable synthesis of three primary colors of light and photosynthesis phenomena to be intuitively and visually observed, comprises a base, a bracket, a cylinder shell, a collector lens, a lens displacement device, an LED light source module, an LED radiating device and an LED drive circuit, wherein the cylinder shell is connected with the base through the bracket, and is arranged horizontally; an opening is formed at the front end of the cylinder shell; the collector lens, the LED light source module, the LED radiating device are arranged in the cylinder shell in sequence from front to back; the collector lens can horizontally move in the cylinder shell through the lens displacement device; and the LED light source module is fixed on the LED radiating device, and comprises an LED for emitting light red, an LED for emitting green light, an LED for emitting blue light, which are arranged according to the equilateral triangle, connected in series, and connected with an output end of the LED drive circuit. The demonstrating instrument has the positive effects that the operation is convenient, the photosynthesis process is seen dynamically by students, the vivid effect is achieved, and the teaching effect is enhanced.

Description

A kind of principle of three primary colours demonstrator based on the bright LED of height

Technical field

The utility model belongs to a kind of synthetic physics teaching, experimental apparatus that is used to demonstrate light, concrete a kind of principle of three primary colours demonstrator based on the bright LED of height.

Background technology

Plurality of advantages such as light emitting diode (LED) is safe and reliable, energy-efficient, environment friendly and pollution-free with it, good visual effect, life-span length are replacing traditional lighting system, become the main flow of following lighting engineering development.

In optical theory, white light is broken down into the multiple color chromatogram of transition gradually after through prism, and color is followed successively by red, orange, yellow, green, blue, blue, purple, visible spectrum color that Here it is.Most color can produce according to different ratios is synthetic through red, green, blue three looks, and same most monochromatic light also can resolve into three kinds of coloured light of red, green, blue, and this is ultimate principle, the i.e. principle of three primary colours of colorimetry.Three kinds of primary colours are separate, and any primary colours all can not have other two kinds of colors synthetic.Red, green, blue is three primary colours; They are according to the synthetic different colours light of different ratio additions; The synthetic color gamut of these three kinds of colors is the most extensive, because traditional three primary colours synthetic technology principle is complicated more than adopting, it is not strong to implement intuitive; In teaching; The student is not easy to understand three primary colours and light compositing principle, on the classroom with in the laboratory, does not still have a kind of instrument that can demonstrate the principle of three primary colours intuitively, conveniently, visually at present, the situation of " the difficult religion of teacher, student find it difficult to learn " in the three primary colours teaching practice, occurred.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of three primary colours and the light compositing phenomenon that can observe light intuitively, visually, helps the student better to understand the principle of three primary colours demonstrator based on the bright LED of height of the principle of three primary colours.

The technical scheme that the utility model adopts is: it comprises base, support, cylinder cover, collector lens, lens displacement, led light source module, LED heat abstractor, led drive circuit; Cylinder cover is connected with base through support; Cylinder cover is horizontally disposed with; Its front end is provided with opening; In cylinder cover, be provided with collector lens, led light source module, LED heat abstractor from front to back successively, collector lens scioptics gearshift can move horizontally in cylinder cover, and the led light source module is fixed on the LED heat abstractor; The led light source module is made up of the LED that glows, green light LED, blue light-emitting LED; Glow LED, green light LED, blue light-emitting LED is according to triangular arranged and be cascaded, the LED that glows, green light LED, blue light-emitting LED are connected with the led drive circuit output terminal.

For reaching better radiating effect; Ensure the LED operate as normal; The LED heat abstractor is made up of aluminium base, fin formula heating radiator, and aluminium base is connected with fin formula heating radiator through heat-conducting silicone grease, and the LED that glows, green light LED, blue light-emitting LED are fixedly mounted on the surface of aluminium base.

For realizing the more light synthetic effect of Gao Liang, it is the high bright type LED of 1W that the LED that glows, green light LED, blue light-emitting LED all adopt power.

Be both convenient focal lengths of lens of regulating, make again the utility model compacter on structure is formed, simplify, lens displacement is set up jointly by a pair of set of displacements that is symmetricly set on upper and lower both sides of cylinder cover or and arranged on left and right sides; Every side displacement combination is formed by gear knob, tooth bar, web member; In the upper and lower both sides of cylinder cover sidewall or and arranged on left and right sides respectively be provided with a horizontal elongated groove; The homonymy tooth bar is arranged on the bottom of the elongated groove of homonymy, and gear knob and tooth bar engagement also can be moved along the elongated groove of homonymy; One end of homonymy web member is connected with the gear knob of homonymy, and the other end is connected with the collector lens frame.

The good effect of the utility model is: 1, compact conformation, stable performance, be easy to carry, requisite space is little during displaying; 2 adopt LED pipe advanced, that can send three kinds of monochromes of red, green, blue to replace natural red, yellow, blue three color light respectively as light source, vivid, riotous with colour, attract student's notice, increase study enjoyment, strengthen teaching efficiency; 2, adopt the monochromatic LED pipe of high brightness, structure is small and exquisite, monochromaticity good, and low price, light beam are evenly, imaging is clear; Directly connect indoor alternating current when 3, using, easy to operate, easy, only need to regulate the focal length of lens, just can intuitively see the dynamic building-up process of three primary colours; 4, LED pipe than other light sources, can be avoided danger such as scald, fire as cold light source fully, makes demo environment, experimental situation safer; 5, usable range is extensive, can be widely used in teaching or experiments such as the physics of colleges and universities, professorship, middle and primary schools, natural course, and the excellent popularization using value is arranged.

Description of drawings

Fig. 1 is the one-piece construction synoptic diagram of the utility model;

Fig. 2 is that the A-A of the utility model is to cut-open view;

Fig. 3 is that the B of Fig. 1 is to view;

Fig. 4 is the led drive circuit schematic diagram of the utility model.

Embodiment

As shown in Figure 1, the utility model is mainly by base 13, support 12, cylinder cover 1, collector lens 10, lens displacement, led light source module 9, and led drive circuit 15, LED heat abstractor 6 are formed; Cylinder cover 1 is connected with base 13 through a support 12, and support 12 is an adjustable height type support.Led drive circuit 15 is arranged on base 13 inside, and the CS 14 of led light source module is arranged on above the base 13.

As shown in Figure 1, cylinder cover 1 is horizontally disposed with, and its front end is provided with opening 11, and the rear end is provided with the heat radiation mesh, and cylinder cover 1 is as main structure body, the critical piece of support system: collector lens 10, led light source module 9, LED heat abstractor 6, lens displacement.Be provided with collector lens 10, led light source module 9, LED heat abstractor 6 from front to back successively in cylinder cover 1 inside.Wherein, led light source module 9 is made up of the LED19 that glows, green light LED20, blue light-emitting LED21, and LED heat abstractor 6 is made up of aluminium base 8, fin formula heating radiator 7, and aluminium base 8 is connected with fin formula heating radiator 7 through heat-conducting silicone grease.In order to satisfy three primary colours when synthetic; Should keep a suitable spacing between the ruddiness that each monochromatic light LED19,20,21 sends, green glow, the blue light; As shown in Figure 3; Requirement glows LED19, green light LED20, blue light-emitting LED21 should be according to being cascaded after the triangular arranged, and be connected with the output terminal of led drive circuit 15.Glow LED19, green light LED20, blue light-emitting LED21 is fixedly mounted on the surface of aluminium base 8.The equilateral triangle length of side that LED19, green light LED20, blue light-emitting LED21 form that glows is preferably between the 3--4CM, to reach best color matching effect.For satisfying the demand of luminous flux, the LED19 that glows, green light LED20, blue light-emitting LED21 adopt three single and are the high bright type LED of 1W, and it is higher, more clear to make it in the teaching demonstration process brightness, better effects if.The effect of collector lens 10 is to realize that the red, green, blue three beams light that LED is sent focuses on an equal basis, and preferred diameter is at the condenser lens of 10--15CM.

Like Fig. 1, shown in Figure 2, lens displacement is made up of two displacement combinations 3 that are symmetricly set on cylinder cover 1 upper and lower both sides; Every side displacement combination 3 is formed by gear knob 16, tooth bar 5, web member 4, and gear knob 16 1 ends are knob, and the other end is a gear 18.Respectively be provided with a horizontal elongated groove 2 in the upper and lower both sides of cylinder cover sidewall, homonymy tooth bar 5 is arranged on the bottom of the elongated groove 2 of homonymy, and the gear 18 of gear knob 16 is with tooth bar 5 engagements and can move along the elongated groove 2 of homonymy; Web member 4 one ends of homonymy are connected with the gear knob 16 of homonymy, and the elongated groove 2 that the other end passes homonymy is connected with the frame 17 of collector lens 10.Therefore, collector lens 10 can be along with upper and lower gear knob 16 same moved further, to focus.Also can be according to actual needs, be respectively equipped with displacement combination 3 and respective elongated groove 2 not in cylinder cover 1 upper and lower both sides in the and arranged on left and right sides of cylinder cover 1, annexation is the same.Except that two elongated grooves 2, opening 11 have little light gets into, cylinder cover 1 inside has formed the inner room of dark a, relative closure, has avoided the environment parasitic light that observing effect is influenced.

Led drive circuit 15 also is the LED driving power; As shown in Figure 4; The utility model led drive circuit is to be made up of input end, full bridge rectifier 22, filtering circuit 23, current regulation control circuit 24, output terminal; The core of current regulation control circuit 24 is that the triggering oscillatory circuit of core is formed by one with crowd's wave oscillator chip IC 410B, and the effect of current regulation control circuit 24 is: level output meets the electric current of each LED luminous lighting requirement backward.Each pin of IC410B connects wave of oscillation timing resistor R1 respectively, high-frequency bypass capacitor C1, C2, and feedback sample resistance R 2, R3, FET Q1, FET Q1 output connects inductance L 1, back level filter capacitor C3, sustained diode 1 respectively.

As shown in Figure 4; The principle of work of led drive circuit 15 is: input termination 220V alternating current;, full bridge rectifier 22, filtering circuit 23 become the direct current about 300V after being C4/450V/47 μ F capacitor filtering; This direct current is supplied with late-class circuit on the one hand and is exported as main energy, and another side directly is added in the 1. pin of crowd wave oscillator chip IC 410B, for IC410B provides WV.IC410B the 1. pin obtain supplying power the back, since IC410B the 5. pin the triggering input with 6., 7. pin short circuit, then from the oscillatory regime that is advanced into natural frequency, its oscillation frequency is decided by the resistance of R1; IC410B is through the 4. pin output pwm signal, and this signal is used for adjusting the Q1 ON time, and the time of Q1 conducting is long more, and the electric current of back level output is big more, is LED19,20 and 21 luminosity thereby regulate the light emitting diode D2, D3 and the D4 that are driven.When the Q1 conducting, L1 carries out energy storage, and when Q1 ended, L1 released energy and flows out through sustained diode 1.When practical set was welded, light emitting diode D2, D3 and D4 were cascaded according to equilateral triangle on the driving circuit output terminal.It is normally luminous to adopt above-mentioned preferred circuit just can drive three-primary color LED 19,20,21.

The method of application of the utility model is: be provided with a white background in the place ahead of the opening 11 of cylinder cover 1 and show screen; Carrying out three primary colours when synthetic,, realize the luminous flux stack through regulating the focal length of collector lens 10; Project white background again and show on the screen, verify the three primary colours composition principle.During test, let condenser lens 10 place the focal length part earlier, let red, green, blue three monochromic beams of equidistance pass through, project and form the red, green, blue hot spot on the screen; Regulate the focal length of lens then gradually, three-beam is evenly spread on screen realize folded mutual superposition, can see the Overlay of not sharing the same light in different overlap-add region, thereby realize dynamically synthesizing of three primary colours; Let the student see intuitively, clearly and decompose and building-up process, thereby help students understand and grasp the principle of three primary colours.

The figure of above-mentioned expression, explanation; Be merely several kinds of preferred embodiments of the utility model; Be not to be that protection domain to the utility model limits, all equivalent variations or modifications of being done according to the utility model claim are the utility model claim and contain.

Claims

1. the principle of three primary colours demonstrator based on the bright LED of height is characterized in that: comprise base (13), support (12), cylinder cover (1), collector lens (10), lens displacement, led light source module (9), LED heat abstractor (6), led drive circuit (15); Cylinder cover (1) is connected with base (13) through support (12); Cylinder cover (1) is horizontally disposed with; Its front end is provided with opening (11); In cylinder cover (1), be provided with collector lens (10), led light source module (9), LED heat abstractor (6) from front to back successively, collector lens (10) scioptics gearshift can move horizontally in cylinder cover (1), and led light source module (9) is fixed on the LED heat abstractor (6); Led light source module (9) is made up of the LED that glows (19), green light LED (20), blue light-emitting LED (21); Glow LED (19), green light LED (20), blue light-emitting LED (21) is according to triangular arranged and be cascaded, the LED that glows (19), green light LED (20), blue light-emitting LED (21) are connected with the output terminal of led drive circuit (15).

2. the principle of three primary colours demonstrator based on the bright LED of height according to claim 1; It is characterized in that: LED heat abstractor (6) is made up of aluminium base (8), fin formula heating radiator (7); Aluminium base (8) is connected with fin formula heating radiator (7) through heat-conducting silicone grease, and the LED that glows (19), green light LED (20), blue light-emitting LED (21) are fixedly mounted on the surface of aluminium base (8).

3. the principle of three primary colours demonstrator based on the bright LED of height according to claim 1 is characterized in that: it is the high bright type LED of 1W that the LED that glows (19), green light LED (20), blue light-emitting LED (21) adopt power.

4. the principle of three primary colours demonstrator based on the bright LED of height according to claim 1 is characterized in that: lens displacement is made up of two the displacement combinations (3) that are symmetricly set on upper and lower both sides of cylinder cover (1) or and arranged on left and right sides; The said displacement combination (3) of every side is formed by gear knob (16), tooth bar (5), web member (4); In the upper and lower both sides of cylinder cover (1) sidewall or and arranged on left and right sides respectively be provided with a horizontal elongated groove (2); Homonymy tooth bar (5) is arranged on the bottom of the elongated groove of homonymy (2), and gear knob (16) also can move along the elongated groove (2) of homonymy with tooth bar (5) engagement; Web member (4) one ends of homonymy are connected with the gear knob (16) of homonymy, and the other end is connected with the frame (17) of collector lens (10).