A lighting fixture with visible purple light

Abstract

The present invention discloses a lighting fixture of visible purple light, comprising a substrate and an LED light source group; the LED light source group is arranged on the substrate, and the LED light source group is driven to emit light by a driving circuit arranged on the substrate; the number of LED light source groups is at least one group, and each LED light source group comprises UV LED lamp beads and white light LED lamp beads, the number ratio of UV LED lamp beads to white light LED lamp beads is 1:4-1:6, the white light LED lamp beads are distributed around the UV LED lamp beads, and the wavelength of the UV LED lamp beads is 395nm±2nm. The present invention makes the wavelength of the ultraviolet light emitted by it be 399nm±8nm, which is within the ultraviolet light spectrum UVA, has a narrow bandwidth, and a pure spectrum.

Description

Technical Field

[0001] The invention relates to the technical field of LEDs, and in particular to a lighting fixture with visible purple light. Background Art

[0002] Existing ultraviolet lamps usually include two types: one is a fluorescent ultraviolet lamp, which is a gas discharge lamp that emits 330nm-400nm ultraviolet light waves. This ultraviolet light wave is insensitive to light, so the lamp made of this insensitive ultraviolet light is called a black light lamp. The lamp tube structure and electrical characteristics of the black light lamp are the same as those of general lighting fluorescent lamps, except that the fluorescent powder coated inside the tube wall is different. When the black light lamp is working, the current passes through a tube filled with inert gas and trace mercury, and it belongs to the category of thermal light source products.

[0003] The fluorescent ultraviolet lamp has the problems of high power consumption, low energy utilization, time required for preheating, great impact on service life due to switch, fear of water splashing and easy to burst. The power of handheld mercury vapor lamp is 100W, and the power of ceiling-mounted device is 400W. The high power consumption generates a lot of heat, which makes the lamp surface hot and brings the risk of burns. Mercury vapor lamp is made of fragile glass bulb and filter, and needs to be protected from accidental damage caused by impact or splashing liquid.

[0004] Another type of ultraviolet light is an ultraviolet light emitting diode, or UV LED. Ultraviolet light is electromagnetic radiation with a wavelength of 100nm-400nm in the electromagnetic spectrum. Ultraviolet light is divided into A rays, B rays, and C rays (abbreviated as UVA, UVB, and UVC). Specifically, UVA is 400nm-315nm, UVB is 315nm-280nm, and UVC is 280nm-100nm. Among them, UVB and UVC are harmful to the human body. The wavelength of ultraviolet light is shorter than that of visible light, so ultraviolet light has stronger energy than visible light and is more harmful to the skin than visible light.

[0005] The defect of the ultraviolet light emitting diode is that the ultraviolet light it emits includes UVA of 400nm-315nm, UVB of 315nm-280nm, and UVC of 280nm-100nm, with a wide bandwidth and impure spectrum, including harmful UVB and UVC. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the present invention aims to provide a lighting fixture of visible violet light with narrow bandwidth and pure spectrum.

[0007] To achieve the above-mentioned purpose, an embodiment of the present invention provides a visible purple light lighting fixture, comprising a substrate and an LED light source group;

[0008] The LED light source group is arranged on the substrate, and the LED light source group is driven to emit light by a driving circuit arranged on the substrate; the number of LED light source groups is at least one group, and each LED light source group includes UV LED lamp beads and white light LED lamp beads, the ratio of the number of UV LED lamp beads to the number of white light LED lamp beads is 1:4-1:6, the white light LED lamp beads are distributed around the UV LED lamp beads, and the wavelength of the UV LED lamp beads is 395nm±2nm; it also includes a black bulb shell, the black bulb shell cover is arranged on the substrate, and the black bulb shell filters visible light in the light.

[0009] According to a visible purple light lighting fixture of an embodiment of the present invention, since white light LED lamp beads are distributed around UV LED lamp beads, the wavelength of the UV LED lamp beads is 395nm±2nm, and the ratio of the number of UV LED lamp beads to the number of white light LED lamp beads is 1:4-1:6, the wavelength of the emitted ultraviolet light is 399nm±8nm, which is within the ultraviolet light spectrum UVA, has a narrow bandwidth, and a pure spectrum.

[0010] In addition, the visible purple light lighting fixture proposed in the above embodiment of the present invention may also have the following additional technical features:

[0011] Furthermore, it also includes an optical lens, which is arranged above the LED light source group and makes the light emitted by the LED lamp beads uniform.

[0012] Furthermore, the white light LED lamp beads are evenly distributed around the UV LED lamp beads.

[0013] Furthermore, the number of LED light source groups is one group, and the LED light source group includes one UV LED lamp bead and four white light LED lamp beads, and the four white light LED lamp beads are evenly distributed around the UV LED lamp bead.

[0014] Furthermore, the white light LED lamp beads are evenly distributed on the circumference of the UV LED lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a structure according to an embodiment of the present invention;

[0016] Figure 2 is a schematic diagram of a color report according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the color report of the entire lamp composed of white light LED lamp beads and black bulb shell;

[0018] Figure 4 This is a schematic diagram of the color report of the entire lamp composed of white light LED lamp beads and white bulb shell;

[0019] Figure 5It is the LED spectrum distribution diagram;

[0020] Figure 6 This is the spectral distribution diagram of the thermal light source.

[0021] Description of symbols

[0022] Substrate 1 LED light source group 2

[0023] UV LED lamp beads 21 White light LED lamp beads 22

[0024] Optical lens 3. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figure 1 As shown, a visible purple light lighting fixture according to an embodiment of the present invention includes a substrate 1 and an LED light source group 2 .

[0027] The LED light source group 2 is arranged on the substrate 1, and the LED light source group 2 is driven to emit light by a driving circuit arranged on the substrate 1; the number of the LED light source group 2 is at least one group, and each LED light source group 2 includes UV LED lamp beads 21 and white light LED lamp beads 22, and the ratio of the number of UV LED lamp beads 21 to the number of white light LED lamp beads 22 is 1:4-1:6, and the white light LED lamp beads 22 are distributed around the UV LED lamp beads 21, and the wavelength of the UVLED lamp beads 21 is 395nm±2nm.

[0028] Since the white light LED lamp beads 22 are distributed around the UV LED lamp beads 21, the wavelength of the UV LED lamp beads 21 is 395nm±2nm, and the ratio of the number of UV LED lamp beads 21 to the white light LED lamp beads 22 is 1:4-1:6, the wavelength of the emitted ultraviolet light is 399nm±8nm, which is within the ultraviolet light spectrum UVA, with a narrow bandwidth and a pure spectrum.

[0029] Specifically, Figure 1As shown, the number of LED light source groups 2 is one group, and the group of LED light source groups 2 includes one UV LED lamp bead 21 and four white light LED lamp beads 22. The four white light LED lamp beads 22 are evenly distributed around the UV LED lamp bead 21, so that it can be used for close-range irradiation and can be applied to the field of light curing systems. Of course, the number of LED light source groups 2 can be multiple groups, such as two groups, three groups, four groups, etc., and there is no limitation on this. When the number of LED light source groups 2 is multiple groups, each group of LED light source groups 2 includes one UV LED lamp bead 21 and four white light LED lamp beads 22. The four white light LED lamp beads 22 in each group of LED light source groups 2 are evenly distributed around the UVLED lamp bead 21. Multiple groups of LED light source groups 2 can be used for large-area irradiation. Of course, the ratio of the number of UV LED lamp beads 21 to the number of white LED lamp beads 22 in each LED light source group 2 is also 1:5 or 1:6, such as five white LED lamp beads 22 in each LED light source group 2 are evenly distributed around one UV LED lamp bead 21, which can achieve the same effect. The present invention can be used for both close-range irradiation and large-area irradiation, thus having a variety of irradiation forms.

[0030] In some examples, the visible ultraviolet light lighting fixture further includes a black bulb (not shown in the figure), which is disposed on the substrate 1 and filters the visible light in the light. The black bulb effectively filters the visible light to prevent the ultraviolet glare from forming on the surface of the workpiece when it is used for irradiation, resulting in a blind spot and affecting the working effect.

[0031] In some examples, the visible violet light illuminating lamp further comprises an optical lens 3, which is arranged above the LED light source group 2, and the optical lens 3 makes the light emitted by the LED lamp beads uniform, thereby ensuring that the light emitted by the LED lamp beads is uniform and the application effect is better.

[0032] In some examples, the white light LED lamp beads 22 are evenly distributed around the UV LED lamp beads 21 so that the light color quality of the light emitted by it is better. In this example, the white light LED lamp beads 22 are evenly distributed on the circumference of the UV LED lamp beads 21.

[0033] The following is a performance comparison test of the visible purple light lighting fixtures of the embodiment. The tested data are shown in Table 1. Figures 2 to 4 As shown, Figure 2 is a schematic diagram of a color report according to an embodiment of the present invention, Figure 2 Corresponding to serial number 1; Figure 3 This is a schematic diagram of the color report of the entire lamp composed of white light LED lamp beads and black bulb shells. Figure 3 Corresponding to serial number 2, Figure 4 This is a schematic diagram of the color report of the entire lamp composed of white light LED lamp beads and white bulb shells. Figure 4 Corresponding to sequence number 3.

[0034] Table 1

[0035]

[0036] Referring to the data in Table 1, it can be seen that the peak wavelength of the visible violet light lighting fixture of the embodiment is 399nm, which is located in the UVA spectrum band, has a narrow bandwidth, and is spectrally pure. The peak wavelength of the whole lamp composed of white light LED lamp beads and black bulb shells is 725nm, and the peak wavelength of the whole lamp composed of white light LED lamp beads and white bulb shells is 450nm, which is not located in the UVA spectrum band, and it is visible light. The color purity of the visible violet light lighting fixture of the embodiment is 66.8%, the color purity of the whole lamp composed of white light LED lamp beads and black bulb shells is 30.7%, and the color purity of the whole lamp composed of white light LED lamp beads and white bulb shells is 9%. The visible violet light lighting fixture of the embodiment has the highest color purity. The half-peak bandwidth of the visible violet light lighting fixture of the embodiment is 14.5nm, the half-peak bandwidth of the whole lamp composed of white light LED lamp beads and black bulb shells is 94.8nm, and the half-peak bandwidth of the whole lamp composed of white light LED lamp beads and white bulb shells is 23.1nm. The half-peak bandwidth of the visible violet light lighting fixture of the embodiment is the narrowest.

[0037] In summary, the peak wavelength of the light emitted by the visible ultraviolet lighting lamp of the present invention is 399nm, which is located in the UVA spectrum band; it cooperates with the black bulb to effectively filter the visible light, preventing it from forming ultraviolet glare on the surface of the workpiece when used for irradiation, creating blind spots and affecting the working effect; its spectral curve is very narrow, with high color purity, and more than 90% of the energy is concentrated at 399±7nm.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0043] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A lighting fixture with visible purple light, characterized in that: It includes a substrate and an LED light source group; The LED light source group is arranged on the substrate, and the LED light source group is driven to emit light by a driving circuit arranged on the substrate; the number of LED light source groups is at least one group, and each LED light source group includes UV LED lamp beads and white light LED lamp beads, the ratio of the number of UV LED lamp beads to the number of white light LED lamp beads is 1:4-1:6, and the white light LED lamp beads are distributed around the UV LED lamp beads. The wavelength of the UV LED lamp beads is 395nm±2nm, and the wavelength of the ultraviolet light emitted is 399nm±8nm; it also includes a black bulb shell, the black bulb shell cover is arranged on the substrate, and the black bulb shell filters visible light in the light.

2. A visible violet light lighting fixture as claimed in claim 1, characterized in that: It also includes an optical lens, which is arranged above the LED light source group and makes the light emitted by the LED lamp beads uniform.

3. The visible violet light lighting fixture according to claim 1, characterized in that: The white light LED lamp beads are evenly distributed around the UV LED lamp beads.

4. The visible violet light lighting fixture according to claim 1, characterized in that: The number of LED light source groups is one group, and the LED light source group includes one UV LED lamp bead and four white light LED lamp beads, and the four white light LED lamp beads are evenly distributed around the UV LED lamp bead.

5. The visible violet light lighting fixture according to claim 1, characterized in that: The white light LED lamp beads are evenly distributed on the circumference of the UV LED lamp beads.

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