WO2014194662A1 - Desk lamp having hybrid lighting modes - Google Patents

Abstract

Disclosed is a desk lamp having hybrid lighting modes, comprising a lampshade (102), a bottom case (103) and a control circuit (120), wherein the bottom case (103) is arranged on the lampshade (102); the bottom case (103) is provided with a substrate (104), an upper side of the substrate (104) is provided with a radiator (105), and a lower side thereof is provided with two LED lamp beads (106, 107) with different powers; and an LED dimmer (121) is arranged in the control circuit (120). The two LED lamp beads (106, 107) are electrically connected to at least two outputs of the LED dimmer (121), respectively, and the current output intensities/pulses of the two outputs are respectively adjustable, so as to enable the two LED lamp beads to work at different illumination intensities. The desk lamp has various hybrid lighting modes to fit the needs of different occasions.

Description

Table lamp with mixed lighting mode

 Technical field

 The utility model relates to the technical field of lighting lamps, and more particularly to a table lamp with a mixed lighting mode.

 Background technique

 The desk lamp is a kind of household appliance used for lighting in people's life. Its working principle is mainly to concentrate the light in a small area, which is convenient for work and study. among them, LED table lamp is LED (Light Emitting Diode) That is to say, the light-emitting diode is a light source table lamp, which is energy-saving, environmentally friendly, safe and reliable compared with the conventional incandescent lamp and fluorescent lamp.

 In the prior art, the LED desk lamp part adopts high power LED The optical lens has the advantages of small volume, low power consumption, small heat generation, long life, fast response, safe low voltage, good weather resistance, good directionality, and no influence on the non-irradiation range. Strong, concentrated range of light, But sometimes it is more glaring, and the eyes are prone to fatigue or even injury after a long time. Some lamps use multiple low-power LEDs The array layout and the diffusion plate are uniform, which has the characteristics of weak light intensity and wide illumination range, but also due to the wide illumination range and low illumination brightness, which easily causes light pollution and waste in the non-irradiated area. In addition, in the prior art, there is also a multi-mode lighting table lamp, which is provided with high power at the same time. LED lamp beads and low-power LED lamp beads, two LED lamp beads are controlled by the control circuit, when the spotlight illumination is needed, the LED with higher power can be selected. The operation mode of the lamp bead plus the optical lens; conversely, when the flood illumination is required, the LED with lower power can be selected. The working mode of the lamp bead and the diffuser plate can meet the needs of different occasions, but in real life, the demand for the light source mode is more and more diversified. For example, in the exhibition occasions of jewelry, goldware and other jewelry, people hope to be in the showcase. At the same time, two modes of adjustable spotlighting and floodlighting are applied at the same time. The floodlighting mode makes the surrounding of the product full of brilliance to attract buyers. When the buyer needs to carefully tasting the product, the brightness of the two light sources is adjusted. The ratio allows the product to be carefully observed in the spotlight illumination mode. For example, indoors, people can work and learn in the spotlight illumination mode, and in the floodlight mode, the room can obtain a soft lighting atmosphere, but because of The above two light source modes are respectively controlled to be turned on and off, and the brightness cannot be adjusted, or the light source is a specific power, and the mode is single, which cannot meet various needs of people, so the prior art has a large use restriction, resulting in The LED table lamp is not suitable for use.

 Utility model content

 The present invention aims to solve the above technical problems at least to some extent.

 SUMMARY OF THE INVENTION An object of the present invention is to provide a table lamp having a mixed illumination mode that is easy to use and easy to use.

A desk lamp with a mixed illumination mode includes a lamp cover, a bottom case, a control circuit, the bottom case is disposed on the lamp cover, the bottom case is provided with a substrate, the upper side of the substrate is provided with a heat sink, and the lower side is provided with two Different power LEDs An LED dimmer is disposed in the control circuit, and the two LED bead are electrically coupled to the output of the LED dimmer and operate at different illumination intensities. Preferably, the LED The current output intensity/pulse width of the at least two output ends of the dimmer are respectively adjustable. To achieve different illumination intensities, the LED dimmer can be configured according to the prior art to provide two outputs with different current output intensity levels, or utilize PWM dimming technology, set two output terminals with different pulse widths, that is, by adjusting the LED dimmer, the current intensity/pulse width of the two output terminals in the dimmer are matched in a certain ratio, therefore, two different powers The LED lamp beads can work at the same time, and the brightness ratio of the two LED lamp beads can be separately adjusted by the LED dimmer. When the spotlight illumination is required, the LED with higher power can be added. The light intensity of the lamp bead works with the optical lens. When the floodlighting is required, the LED with less power can be added. The light intensity of the lamp bead works with the diffuser, so the lamp has a variety of mixed lighting modes to meet the needs of different occasions. Therefore, the utility model has wider adaptability for use, and the same lamp has different mixed illumination modes, which is convenient for the user to use.

 Further, the LED lamp bead comprises at least one high power LED lamp bead and at least one low power LED lamp bead. Due to high power LEDs and low-power LEDs are common terms used by those skilled in the art, and their definitions are not described here. Among them high power LED When the lamp bead is used for spotlighting, it is suitable for fine work or bedside reading does not affect the sleep of others. The low-power LED lamp bead is used for floodlighting, such as general writing and normal working conditions.

 Preferably, an optical lens is disposed on a lower side of the high power LED lamp bead, and a diffuser is disposed on a lower side of the low power LED lamp bead. The optical lens is mainly used for collecting and guiding light of LED cold light source series products. It can design the light distribution curve according to the angle of different LED exiting light, increase optical reflection, reduce light loss and improve light efficiency. Diffuser can make The light from the LED lamp beads is evenly visible.

 Since the illumination of the high-power LED is strong, the illumination range is concentrated; the low-power LED has a weak illumination and a wide illumination range, so preferably, The high power LED lamp bead is disposed at the center of the substrate, and the low power LED lamp bead is disposed around the high power LED lamp bead.

 In one embodiment, different power LEDs There are lighting accessories between the chips to block the two kinds of light sources, and to improve the aesthetics and competitiveness of the products, and to attract consumers' attention.

 The utility model has the beneficial effects that: the two different power LED lamp beads of the utility model can work at the same time or through the LED The dimmer adjusts the brightness ratio of the two LED bead separately. When the spotlight illumination is required, the LED with higher power can be added. The light intensity of the lamp bead works with the optical lens. When the floodlighting is required, the LED with less power can be added. The light intensity of the lamp bead works with the diffuser plate, so the table lamp has a variety of mixed lighting modes to meet the needs of different occasions. The utility model has wider adaptability, and the same lamp has different mixed illumination modes, which is convenient. User use.

 DRAWINGS

 1 is a schematic cross-sectional view of an embodiment of the present invention.

 Figure 2 is a partial enlarged view of Figure 1.

 3 is a schematic perspective view of an embodiment of the present invention.

 Figure 4 is a partial enlarged view of Figure 3.

 Figure 5 is a schematic diagram of a control circuit of the illumination mode of the present invention

 Figure 6 is a schematic view showing the use of a lighting mode of the present invention.

 Figure 7 is a schematic view showing the use of another illumination mode of the present invention.

The drawings are for illustrative purposes only and are not to be considered as limiting of the present invention; some of the components of the drawings may be omitted, enlarged or reduced for better illustration of the embodiments, and do not represent the dimensions of the actual product; It will be understood by those skilled in the art that certain known structures and their description may be omitted.

 detailed description

 The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

 As shown in FIG. 1 to FIG. 5, a desk lamp with a mixed illumination mode of the present invention includes a bottom bracket 101 and a lamp cover 102. The lamp cover 102 is supported by the bottom bracket 101. The bottom of the lamp cover 102 is provided with a bottom case 103. The bottom case 103 is located at a portion inside the lamp cover and is provided with a substrate 104. In this embodiment, an aluminum substrate commonly used in the art is used. A heat sink 105 is disposed on a side of the substrate 104 facing the lamp cover 102 for heat dissipation; and the substrate 104 faces away from the lamp cover 102. One side of the LED lamp bead is provided with at least two different powers. In this embodiment, the LED lamp bead includes a high-power LED lamp bead 106 and a low-power LED lamp bead 107. And controlled by the control circuit 120, wherein the control circuit 120 is provided with an LED dimmer 121, and the LED dimmer 121 is provided with two output terminals, respectively, an output terminal a And the output end b, the output current a and the output b of the current output intensity / pulse width are respectively adjustable, so that the current intensity / pulse width of the output terminal a / output b gradually increases, the output end b/ output a gradually decreases, high power LED lamp bead 106 is connected to output a, low power LED lamp bead 107 is connected to output b, therefore, two different power The LED bead can work at the same time, and the brightness ratio of the two LED bead can be adjusted separately by the LED dimmer.

 The high-power LED lamp bead 106 is fixed in the center of the substrate 104 through the fixing member 108, and the low-power LED lamp bead 107 Surrounding high-power LED lamp beads 106 Arrangement, increase the power of LED when concentrated illumination is required The light intensity of the lamp bead works with the optical lens. When floodlighting is required, the light intensity of the LED lamp bead of less power can be increased and work with the diffuser to meet the needs of different occasions. Of course, in other embodiments, The LED bead can include a high power LED bead and a variety of low power LED bead, or a combination of high power LED bead and low power LED bead.

 In this embodiment, the side of the high-power LED lamp bead 106 facing away from the substrate 104 is provided with an optical lens 109, and the low power The LED lamp bead 107 is provided with a diffusion sheet 110 on one side of the back substrate 104. There are also lighting parts between the high-power LED chip 106 and the low-power LED lamp bead 107. .

 As shown in Figure 6, when concentrated illumination is required, and floodlighting is secondary, increase the power of the LED. The light intensity of the lamp bead, the concentrated light in the middle is enhanced, and the divergent light around it is weakened. As shown in Figure 7, when the floodlighting is required, and the spotlighting is secondary, the LED with less power can be added. The light intensity of the lamp bead, the divergent light around it is enhanced, and the concentrated light in the middle is weakened. Therefore, the desk lamp has a variety of mixed lighting modes to meet the needs of different occasions. Therefore, the utility model has wider adaptability for use, and the same lamp has different mixed illumination modes, which is convenient for the user to use.

It is apparent that the above-described embodiments of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims (5)

1. A desk lamp with a mixed illumination mode includes a lamp cover, a bottom case, a control circuit, the bottom case is disposed on the lamp cover, the bottom case is provided with a substrate, the upper side of the substrate is provided with a heat sink, and the lower side is provided with two Different power LEDs a lamp bead, wherein the control circuit is provided with an LED dimmer, and the two LED bead are electrically connected to the LED respectively At least two outputs of the dimmer, the current output intensity or pulse width of the two outputs are respectively adjustable, so that the two LED beads operate at different illumination intensities.
2. The desk lamp with hybrid lighting mode according to claim 1, wherein the LED lamp bead comprises at least one high power LED Lamp beads and at least one low power LED lamp bead.
3. The desk lamp with hybrid lighting mode according to claim 2, wherein the lower side of the high-power LED lamp bead is provided with an optical lens, and the low-power LED A diffuser is provided on the lower side of the lamp bead.
4. The desk lamp with a hybrid illumination mode according to claim 1, wherein the high-power LED lamp bead is disposed at a center of the substrate, and the low-power LED The lamp bead surrounds the high power LED lamp bead.
5. The multi-mode lighting table lamp according to any one of claims 1 to 4, characterized in that the lighting fixtures are arranged between the LED beads of different powers.

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