TWM459342U - LED sodium white light - Google Patents

Description

Light-emitting diode sodium white light

The present invention relates to a light-emitting diode (LED) sodium white lamp, and more particularly to an LED sodium white lamp capable of emitting a plurality of light.

The low-pressure sodium lamp was created by the Dutch GILES HOLST in 1932 and is the ancestor of high-intensity gas discharge (HID) lamps. After that, sodium lamps are widely used in road lighting with a luminous intensity of 131 lumens per watt, making them the most efficient source of light in existing artificial light sources. For example. When lit by a 180-watt lamp, its luminous intensity is 175 lumens/watt, and its luminous efficiency is almost three times that of a typical mercury lamp. In addition, the life of the sodium lamp is about 9000 hours, but the startup time is about 15 to 20 minutes before the steady state is reached.

The low-pressure sodium lamp emits a single wavelength of light at a wavelength of about 589 to 589.6 nm. The color of the light is yellow-orange, the color temperature is about 1700 K, and the color rendering Ra value is equal to zero. In addition, the low pressure sodium lamp must maintain a specific burning position, that is, the placement angle of the low pressure sodium lamp (such as horizontal, vertical or tilt) affects the color and life of the light. Therefore, the designer must design the burning position of the low-pressure sodium lamp, which causes the design to be too restrictive and makes the designer feel quite inconvenient.

The human retina is sensitive to the color of the light, especially the yellow and orange light, so the use of sodium can increase the range of illumination. In addition, the sodium lamp has high light transmittance and a single angle of reflection, and the human eye can more clearly see the area illuminated by the sodium lamp.

The life of low-pressure sodium lamps varies with the number of ignition points during use. It is 19,000 hours. Light decay is smaller than other light sources, and the end-of-life fashion can reach an initial luminous flux of 80 to 85%. Due to the long discharge of the low-pressure sodium lamp, the migration of sodium has a certain influence on the performance and life of the lamp. Therefore, the direction of the ignition point should be specified to prevent the migration of sodium (the horizontal angle is generally allowed to be within ±20%, small The allowable declination of the power low pressure sodium lamp can be larger). Low-pressure sodium lamp radiates monochromatic yellow light, and its color rendering is general. It is suitable for lighting places with high illumination requirements but no requirement for color rendering, such as highways, elevated railways, highway tunnels, bridges, ports, urban squares, urban and rural areas. , advanced intelligent residential areas, embankments, freight yards, building markings and various types of building security anti-theft lighting. Due to the strong yellow light transmission, the lamp is also suitable for illumination in foggy areas.

However, such sodium lamps are expensive, require a long warm-up time, and consume a considerable amount of power, so that they are becoming less and less suitable for modernization. In addition, such a low-pressure sodium lamp cannot be quickly adjusted to a normal working state because of the long reaction time of lighting, so that the dimming module cannot be used for dimming. In addition, the low-pressure sodium lamp needs to be kept lit at all times, so the life is short, and it is also quite power-consuming, and it generates radiant heat of ultraviolet light and infrared light, which may damage the eyes of the operator. Furthermore, the low-pressure sodium lamp is bulky and cannot meet the demand for miniaturization. Moreover, the low-pressure sodium lamp is not shock-resistant, and there is a problem that sodium vapor or mercury leaks out and causes pollution. In addition, conventional sodium lamps have a problem of light leakage because they are shielded by a mask. Furthermore, conventional low pressure sodium lamps can only be placed at specific angles (limited to the burning position) and are therefore inconvenient for design and use.

Because some tests require the use of sodium lamps, and some tests must be carried out with white lights as the source of light, in order to meet these different uses. Demand, the traditional inspection method must be taken under the sodium lamp and white light for inspection. However, this type of inspection is quite inconvenient, and the sodium and white lights need to be lit all the time. When a sodium or white light is not required, a mask is needed to cover the light of the sodium or white light. It is conceivable that such as complex inspection procedures, light leakage, and wasted energy are obvious disadvantages.

One object of the present invention is to provide a light-emitting diode (LED) sodium white lamp capable of selectively emitting a plurality of light beams, one of which is a light source simulating a sodium lamp, and can be switched to be used as a white light, and is not switched when switched. There will be time difference, adjustable brightness, and can be applied to various angles of use, so that LED sodium white light has a variety of uses.

To achieve the above object, the present invention provides an LED sodium white lamp comprising a body, a first light source and a second light source. The first light source is disposed on the body and emits the first light. The second light source is disposed on the body and emits a second light different from the first light. The second light has a dominant wavelength range between 589 and 589.6 nm. The first light source and the second light source each comprise a light emitting diode.

Therefore, the LED sodium white lamp of the present invention can use LEDs and filters to simulate the illuminating effect of the sodium lamp, and can also provide the illuminating effect of the white lamp. Since the LED's lighting reaction time is short, it can be immediately lit and immediately extinguished, so the present invention does not require conventional warm-up time. Furthermore, the low power consumption of LEDs can save energy. In addition, the life of the LED die is close to 50,000 hours and can be lit or extinguished at any time. Unlike the traditional sodium lamp, the LED sodium white lamp has a long service life and can save a considerable amount. Electricity. Because it can be based on needs The LEDs are arranged, for example, by arranging the LEDs at equal intervals or at different intervals, so that light with high uniformity can be generated. In addition, the LED is a cold light source, and the heat is low, so it is not easy for the operator to feel hot. Moreover, the LED does not have the radiant heat of ultraviolet light and infrared light, and does not harm the operator's eyes. In addition, the setting of the dimming module can facilitate the operator to adjust the required brightness of the light, and the setting of the foot switch module allows the operator who has already held the item to be tested to conveniently switch. Because the size of the LED is small, the arrangement of the LEDs does not occupy a small space, which is advantageous for miniaturization of the product. Because of the high shock resistance of the LED, the danger of gas leakage due to the easy breakage of the conventional light source is eliminated. Because the use of LEDs meets the environmental requirements of recyclability, there is no problem of contamination caused by mercury leakage from conventional light sources. Moreover, the LED sodium white lamp of the present invention does not require warm-up time, so it can be lit immediately. In addition, the light emitted by the LED sodium white lamp can be a 100% sodium lamp or a white lamp, so that there is no problem of light leakage. Furthermore, the LED sodium white lamp of the present invention can be placed at any angle, can be lying flat, standing or tilted at any angle, and is convenient to design and use.

In order to make the above description of the present invention more comprehensible, a preferred embodiment will be described below in detail with reference to the accompanying drawings.

1 shows a schematic cross-sectional view of an LED sodium white lamp in accordance with a first embodiment of the present invention. 2 shows a top view of an LED sodium white lamp in accordance with a first embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the LED sodium white lamp 1 of the present embodiment includes a body 10, a plurality of first light sources 20, and a plurality of second light sources 30. Although the embodiment is exemplified by a plurality of first light sources and a plurality of second light sources, those skilled in the art should understand that as long as The first light source and the second light source can achieve the effect of the novel.

The body 10 is a whole body of the LED sodium white lamp 1, preferably having a heat dissipation effect (such as having heat dissipation fins and/or a heat dissipation fan) to dissipate heat and maintain the first light source 20 and the second The preferred operating temperature of the light source 30 prevents the first source 20 and the second source 30 from shortening their life or burning due to overheating.

The first light sources 20 are disposed on the body 10 and emit a first light L1. Each of the first light sources 20 includes a plurality of first light emitting units 21, such as 3*14 light emitting diodes (LEDs), which emit a first light ray L1. In addition to using LEDs, other cold light sources can be used.

The second light sources 30 are disposed on the body 10 and emit a second light L2 different from the first light L1. Each of the second light sources 30 includes a plurality of second light emitting units 31 and a filter assembly 32. For example, the second light emitting unit 31 of the light emitting diode (LED) or the cold light emitting source emits the second original light L20, and the filter assembly 32 filters the second original light L20 to output the second light L2.

In the present embodiment, the first light source 20 and the second light sources 30 are alternately arranged on the same plane. Since one of the purposes of this embodiment is to simulate the illuminating effect of the sodium lamp, the dominant wavelength range of the second ray L2 is between 589 and 589.6 nanometers (nm). In this embodiment, the first light L1 is white light. However, the present invention is not limited to this. In other embodiments, the first light may also be other colored light. The LED sodium white lamp with multiple light sources of this embodiment can be used as a test light source for detecting defects of the backlight board, the transparent substrate and the display panel, and can also be regarded as His uses, such as decoration, lighting, etc.

In order to facilitate the control of the illumination state and characteristics of the LED sodium white lamp 1, the LED sodium white lamp 1 may further include a power supply 40, a dimming module 50, a foot switch module 60 and a spectrometer 90. The power supply 40 is electrically connected to the first light source 20 and the second light sources 30, and is supplied to the first light sources 20 and the second light sources 30. The dimming module 50 is electrically connected to the power supply 40 and adjusts the output of the power supply 40 to adjust the brightness of the first light source 20 and the second light sources 30. In this embodiment, since a light source (such as an LED light source) that does not require warming up is used, the dimming module 50 can be used for dimming. The foot switch module 60 is electrically connected to the power supply 40 and controls whether the power supply 40 supplies power to the first light source 20 and the second light sources 30. In particular, the foot switch module 60 can control whether the first light source 20 or the second light source 30 emits light or not, or control the first light source 20 to emit light together with the second light source 30, or control the first light source 20 or The luminance of the two light sources 30. For example, using a loop to enter various lighting states, or to control the brightness of the light by stepping on the length of the foot switch or the force. The user can hold the items to be detected with both hands, such as an LCD panel, a lens, a backlight, and the like, and use the foot switch module 60 to conveniently perform the detection. The spectrometer 90 is electrically connected to the power supply 40, and senses the second light L2 to monitor whether the second light L2 is normal, such as brightness attenuation, abnormal wavelength distribution, etc., and can also send a prompt message to the operator for maintenance under abnormal conditions. Or replacement action. Monitoring with spectrometer 90 is a preferred method because LEDs may vary in wavelength as a function of temperature. In another embodiment, the spectrometer 90 can also sense The first light L1 monitors whether the first light L1 is normal.

The illuminating effect of the above simulated sodium lamp can be achieved in the following manner. Figure 3 shows an example of a filter assembly. Figure 4 shows a plot of the wavelength versus relative intensity of the third ray. As shown in FIG. 3, the filter assembly 32 is composed of a high pass filter 32H and a low pass filter 32L. The second illuminating unit 31 emits the second primal light L20, and only the second illuminating light L20 having a wavelength shorter than 589.6 nm passes through the low pass filter 32L, that is, generates the second transition ray L23, wherein the wavelength of the second transition ray L23 The portion longer than 589.0 nm (which is part of the second original ray L20) passes through the high pass filter 32H to produce the second ray L2. In Figure 4, only light from 589.0 nm to 589.6 nm passes through the filter assembly 32. Of course, the effect of the filter filtering light also allows for certain tolerances. Therefore, the second light ray L2 has a light component corresponding to a different wavelength, and the dominant wavelength range of the second light ray L2 is a range of wavelengths of the light components of 80%, 90% or 95% or more. That is, the second light ray L2 may have some light components outside the range of 589 to 589.6 nanometers (nm), that is, have a sub-wavelength range.

Figure 5 shows another example of a filter assembly. As shown in FIG. 5, the filter assemblies 32 of the second light sources 30 are integrally formed as a filter plate 32' instead of a plurality of filter plates. The filter plate 32' has a plurality of openings 32A, and the first light sources 20 are exposed by the openings 32A, respectively. That is, the light of the first light source 20 is not filtered by the filter 32' because it passes through the opening portion 32A, and the light of the second light source 30 is filtered by the filter plate 32'. The advantage of this is that you can use only one filter, so you only need to position one filter, instead of positioning a lot of filters every time you assemble. Light board. This can effectively shorten the assembly time.

Figure 6 is a cross-sectional view showing the LED sodium white lamp 1M2 according to the second embodiment of the present invention. As shown in FIG. 6, the present embodiment is similar to the first embodiment except that the first light emitting unit 21 and the second light emitting unit 31 are both mounted on the circuit board 33, and the circuit board 33 is mounted on the body. 10 on. The advantage of this is that the LED can be mounted on the circuit board in advance, and then the circuit board is mounted on the body 10, so that the effects of the detailed work can be achieved at various stages of the production process, and the production efficiency can be effectively improved.

Figure 7 shows a plan view of an LED sodium white lamp 1M3 in accordance with a third embodiment of the present invention. As shown in FIG. 7, the present embodiment is similar to the first embodiment except that a first light source 20 and a second light source 30 are rotatably disposed on the body 10 by a rotatable body 25. The rotatable body 25 is rotatably disposed on the body 10. In this embodiment, although the two first light sources 20 are directly disposed on the body 10, the present invention is not limited thereto, and the first light source 20 and the second light source 30 are both rotatable. The main body 25 is rotatably disposed on the body 10, and all fall within the scope of the present invention. The first light source 20 and the second light source 30 are respectively disposed on the first surface S1 and the second surface S2 of the main body 25, and the first surface S1 is located on the reverse side of the second surface S2, as shown in FIG. And 31 are respectively mounted on the front and back sides of the main body 25 for the user to rotate the two to switch the light source. If the two first light sources 20 are turned upward, the two fixed first light sources 20 are also matched. The luminous intensity per unit area of white light can be increased. The main body 25 is mounted on the body 10 by means of the rotating shaft P, so that the light sources on the first surface and the second surface S1, S2 can have different light-emitting characteristics, such as color, brightness and the like. In another example, the first light source 20, the second light source 30, and the third light source 100 are respectively disposed on the first surface S1, the second surface S2, and the third surface S3 of the main body 25'. A light L1, the second light source 30 emits a second light L2, and the third light source 100 emits a third light L3. The first surface S1, the second surface S2, and the third surface S3 form a triangle, such as an equilateral triangle, or other triangles, as shown in FIG. 9, that is, the LEDs 21, 31, and 101 are mounted on the triangular prism of the main body 25'. The three faces S1, S2, S3, the LEDs thereon may have different illuminating properties, such as color, brightness, and the like. Users can control as needed.

Figure 10 is a cross-sectional view showing the LED sodium white lamp 1M4 according to the fourth embodiment of the present invention. As shown in FIG. 10, the present embodiment is similar to the first embodiment, except that the LED white light 1M4 further includes a diffusion plate 70 disposed on the body 10 to cover the first light source 20 and the like. The second light source 30 is equalized, and the first light L1 and the second light L2 are homogenized to output a uniform light L7. The arrangement of the diffuser plate 70 allows the output light to be more uniform and softened to meet the requirements of the inspection.

Figure 11 is a cross-sectional view showing the LED sodium white lamp 1M5 according to the fifth embodiment of the present invention. As shown in FIG. 11, the present embodiment is similar to the fourth embodiment except that the first light source 20 and the second light sources 30 are alternately arranged on different planes. This makes it easy for the assembler to assemble without the assembly of the first light source 20 and the second light source 30 at the wrong portion. Alternatively, the positions of the second light source 30 and the first light source 20 may be reversed to maintain the brightness of the light rays L1 and L2 reaching the diffusion plate 70, because the brightness of the light source is inversely proportional to the square of the distance, and the light can be balanced because of the filtering. The attenuation caused by component 32.

Figure 12 is a cross-sectional view showing the LED sodium white lamp 1M6 according to the sixth embodiment of the present invention. As shown in FIG. 12, the present embodiment is similar to the fourth embodiment except that the LED sodium white lamp 1 further includes a plurality of auxiliary light sources 80 disposed on the peripheral slope 10S of the body 10 and emitting auxiliary light L8. The surrounding bevel 10S may be a bevel on either side of the body 10 or a bevel around it. In the present embodiment, the diffusing plate 70 equalizes the first light L1, the second light L2, and the auxiliary light, and outputs a uniform light L7. The auxiliary light source 80 may be the same as the first light source 20 or the second light source 30, or different from the first light source 20 and the second light source 30. The user can also control the light-emitting characteristics of the first light source 20, the second light source 30, and the auxiliary light source 80 through the foot switch module 60 of the first embodiment to provide a variety of lighting effects for the user. It is worth noting that the number of auxiliary light sources can be one, and the effect of the present invention can also be achieved.

The LED sodium white lamp of the present invention can use LEDs and filters to simulate the illuminating effect of the sodium lamp, and can also provide the illuminating effect of the white lamp. Since the LED's lighting reaction time is short, it can be immediately lit and immediately extinguished, so the present invention does not require conventional warm-up time. Furthermore, the low power consumption of LEDs can save energy. In addition, the life of the LED die is close to 50,000 hours and can be lit or extinguished at any time. Unlike the traditional sodium lamp, the LED sodium white lamp has a long service life and can save a considerable amount of time. electric power. Since the LEDs can be configured as needed, for example, the LEDs are arranged at equal intervals or at different intervals, light having a high uniformity can be generated. In addition, the LED is a cold light source, and the heat is low, so it is not easy for the operator to feel hot. Moreover, the LED does not have the radiant heat of ultraviolet light and infrared light, and does not harm the operator's eyes. In addition, The setting of the dimming module can facilitate the operator to adjust the required brightness of the light, and the setting of the foot switch module allows the operator who has already held the item to be tested to conveniently switch. Because the size of the LED is small, the arrangement of the LEDs does not occupy a small space, which is advantageous for miniaturization of the product. Because of the high shock resistance of the LED, the danger of gas leakage due to the easy breakage of the conventional light source is eliminated. Because the use of LEDs meets the environmental requirements of recyclability, there is no problem of contamination caused by mercury leakage from conventional light sources. Moreover, the LED sodium white light of the present invention can be lit immediately without the need to warm up. In addition, the light emitted by the LED sodium white lamp of the present invention can simulate the light of the sodium lamp or the white lamp 100%, respectively, or at the same time, so that there is no problem of light leakage. Furthermore, the LED sodium white lamp of the present invention can be placed or held at any angle, can be lying, standing or tilted at any angle, and is convenient to design and use.

The specific embodiments set forth in the detailed description of the preferred embodiments are merely used to facilitate the description of the technical scope of the present invention, and are not intended to limit the present invention narrowly to the above embodiments, without departing from the spirit of the present invention and the following claims. The scope of the scope and the implementation of various changes are within the scope of this new model.

L1‧‧‧First light

L2‧‧‧second light

L20‧‧‧Second original light

L23‧‧‧second transitional light

L3‧‧‧3rd light

L7‧‧‧ Even light

L8‧‧‧Assisted light

P‧‧‧ shaft

S1, S2, S3‧‧‧ luminous surface

1, 1M2, 1M3, 1M4, 1M5, 1M6‧‧‧ LED sodium white light

10‧‧‧ Ontology

10S‧‧‧around bevel

20‧‧‧First light source

21, 31‧‧‧Lighting unit (LED)

25, 25' ‧ ‧ subject

30‧‧‧second light source

32‧‧‧Filter components

32'‧‧‧Filter Board

32A‧‧‧ openings

32H‧‧‧High Pass Filter

32L‧‧‧ low pass filter

33‧‧‧Circuit board

40‧‧‧Power supply

50‧‧‧ dimming module

60‧‧‧foot switch module

70‧‧‧Diffuser

80‧‧‧Auxiliary light source

90‧‧‧ Spectrometer

1 shows a schematic cross-sectional view of an LED sodium white lamp in accordance with a first embodiment of the present invention.

2 shows a top view of an LED sodium white lamp in accordance with a first embodiment of the present invention.

Figure 3 shows an example of a filter assembly.

Figure 4 shows a plot of the wavelength versus relative intensity of the third ray.

Figure 5 shows another example of a filter assembly.

Figure 6 is a cross-sectional view showing the LED sodium white lamp according to the second embodiment of the present invention.

Fig. 7 is a plan view showing an LED sodium white lamp according to a third embodiment of the present invention.

Figures 8 and 9 show two configurations of the first source/second source.

Figure 10 is a cross-sectional view showing the LED sodium white lamp according to the fourth embodiment of the present invention.

Figure 11 is a cross-sectional view showing the LED sodium white lamp according to the fifth embodiment of the present invention.

Figure 12 is a cross-sectional view showing the LED sodium white lamp according to the sixth embodiment of the present invention.

L1‧‧‧First light

L2‧‧‧second light

L20‧‧‧Second original light

1‧‧‧LED sodium white light

10‧‧‧ Ontology

20‧‧‧First light source

21, 31‧‧‧Lighting unit (LED)

30‧‧‧second light source

32‧‧‧Filter components

Claims (20)

A light-emitting diode (LED) sodium white lamp comprises: a body; a first light source disposed on the body and emitting a first light; and a second light source disposed on the body and emitting a different The second light of the first light has a dominant wavelength range of 589 to 589.6 nm. The LED sodium white lamp of claim 1, wherein the first light source comprises a plurality of first light emitting units that emit the first light. The LED sodium white lamp of claim 1, wherein the second light source comprises a plurality of second light emitting units and a filter component, and the second light emitting unit emits a second original light, and the filter component filters The second original light outputs the second light. The LED sodium white lamp of claim 3, wherein the filter assembly is composed of a high pass filter and a low pass filter, wherein the second original light having a wavelength shorter than 589.6 nm passes The low pass filter, and the second original light having a wavelength longer than 589.0 nm passes through the high pass filter. The LED sodium white lamp of claim 3, wherein the filter component of the second light source is integrally formed as a filter, the filter has an opening, and the first light source is respectively configured by the opening The department is exposed. The LED sodium white lamp of claim 1, wherein the second light has a light component corresponding to a different wavelength, and the second light The dominant wavelength range is a range of wavelengths of the light components of 80% or more. The LED sodium white lamp of claim 1, wherein the second light has a light component corresponding to a different wavelength, and the dominant wavelength range of the second light is 90% or more of a range of wavelengths of the light components. . The LED sodium white lamp of claim 1, wherein the second light has a light component corresponding to a different wavelength, and the dominant wavelength range of the second light is 95% or more of a wavelength range of the light components. . The LED sodium white lamp of claim 1, wherein the first light source and the second light source are disposed on the same plane. The LED sodium white lamp of claim 1, wherein the first light source and the second light source are disposed on different planes. The LED sodium white lamp of claim 1, further comprising: a power supply, electrically connected to the first light source and the second light source, and supplying power to the first light source and the second light source. The LED sodium white lamp of claim 11, further comprising: a foot switch module electrically connected to the power supply and controlling the power supply to the first light source and the second light source Whether or not. The LED sodium white lamp of claim 11, further comprising: a dimming module electrically connected to the power supply, and adjusting an output of the power supply to adjust the first light source and the second The brightness of the light source. For example, the LED sodium white lamp described in claim 11 of the patent scope, The method includes: a spectrometer electrically connected to the power supply, and sensing the second light to monitor whether the second light is normal. The LED sodium white lamp of claim 1, further comprising: a diffusion plate disposed on the body, covering the first light source and the second light source, and the first light and the second light The light is evenized and the uniform light is output. The LED sodium white lamp according to claim 1, further comprising: an auxiliary light source disposed on the surrounding inclined surface of the body and emitting auxiliary light. The LED sodium white lamp of claim 16, further comprising: a diffusion plate disposed on the body, covering the first light source, the second light source and the auxiliary light source, and the first light The second light and the auxiliary light are homogenized to output uniform light. A light-emitting diode (LED) sodium white lamp comprises: a body; a rotatable body rotatably disposed on the body; a first light source disposed on a first side of the body and emitting a first light source; and a second light source disposed on the second surface of the body and emitting a second light different from the first light, the main wavelength range of the second light being between 589 and 589.6 nm . The LED sodium white lamp of claim 18, wherein the first face is located on a reverse side of the second face. The LED sodium white light according to claim 18, further comprising: a third light source disposed on a third surface of the main body and emitting a third light, wherein the first surface and the second surface And the third side constitutes a triangle.