LED lighting device

Abstract

The utility model discloses an LED lighting device. The LED lighting device comprises a light-transmitting bulb shell; the light source assembly is located in the light-transmitting bulb shell, the light source assembly and the light-transmitting bulb shell are mutually spaced, the light source assembly comprises a light-emitting body and a first light conversion part covering the light-emitting body, the light-emitting body is suitable for emitting a light ray, and the first light conversion part is used for converting light emitted by the light-emitting body into light emitted by the light-transmitting bulb shell. The first light conversion part is suitable for allowing the light rays to penetrate through and converting at least one part of wavelength in the light rays, the converted light rays are called first sub-light rays, and the unconverted light rays are called second sub-light rays; and the second light conversion part is arranged on the surface of the light-transmitting bulb shell, the second light conversion part and the first light conversion part are spaced, and the second light conversion part is suitable for converting the wavelength of the second sub-light.

Description

TECHNICAL FIELD

[0001] The present application relates to a lighting device, and in particular to a light emitting diode (LED) bulb. BACKGROUND

[0002] LED lighting devices have many advantages such as long service life, small size, energy saving, etc., and thus are widely used in the market and gradually replace existing incandescent lamps and fluorescent lamps.

[0003] As one of the earliest used electric lighting devices, tungsten filament lamps in incandescent lamps have become one of the most acceptable forms to consumers based on long-term and wide use. However, the tungsten filament lamps have low luminous efficiency, serious heat generation, high energy consumption, and short average service life of 1000-3000 hours, and thus need to be frequently replaced and have high use cost. At present, LED filament lamps with LED filaments as light emitting elements and similar to tungsten filament lamps in shape have appeared in the market. The LED filament lamps are rapidly accepted by consumers and quickly replace tungsten filament lamps in the original lighting field in terms of excellent light emitting performance, low energy consumption, long service life, and similar shape to tungsten filament lamps.

[0004] The LED filament is a light emitting element with a plurality of LED chips arranged in a certain direction and connected, and is commonly in a strip shape. In order to make the LED filament similar to the tungsten filament in shape, the LED filament needs to be made into a thin filament shape with a very small cross section. Such a shape is inevitably challenged in structural strength, especially when the LED filament is flexible and needs to be bent. The LED filament itself or the internal connection structure is prone to breakage and thus cannot be connected and lit.

[0005] With the increasing popularity of light emitting diodes (LEDs), LED lighting devices with LED chips (light emitting diodes) as light emitting sources have gradually become the main option of consumers for lighting appliances in daily life.

[0006] However, in addition to the lighting function, the ornamental value of the lamp is also one of the decisive factors for consumers to buy.

[0007] In the LED lamp, the LED bulb replaces the tungsten filament as a light source by using a long and flexible LED filament to achieve an effect similar to the tungsten filament lamp. The main ornamental value is determined by the shape of the bulb shell and the LED filament. At present, the products on the market mainly improve the ornamental value of the LED bulb by designing the structure of the LED filament, and less investment is made in designing the LED bulb shell or the LED bulb shell and the filament.

[0008] How to effectively improve the ornamental of LED lighting device, improve its light output effect, increase its application scenarios, reduce the blue light emission without significantly increasing the production cost is undoubtedly a very important issue for manufacturers.

[0009] In view of the deficiencies and shortcomings of the prior art, how to design the LED lighting device to improve its light output effect and ornamental is an urgent technical problem for those skilled in the art.

[0010] Application content

[0011] The summary describes many embodiments of the present application. However, the words in the present application are only used to describe certain embodiments disclosed in the specification (whether or not in the claims), rather than a complete description of all possible embodiments. Certain embodiments described above as various features or aspects of the present application can be combined in different ways to form an LED lamp or a part thereof.

[0012] One of the purposes of the present application is to provide an LED lighting device, comprising:

[0013] A light-transmitting bulb shell;

[0014] At least one light source assembly, the light source assembly is located in the light-transmitting bulb shell and is spaced from the light-transmitting bulb shell, the light source assembly comprises a light emitter and a first light conversion part covering the light emitter, the light emitter is adapted to emit a light, the first light conversion part is adapted to let the light pass through and convert at least a part of the wavelength of the light, wherein the converted light is called first sub-light, and the unconverted light is called second sub-light; and

[0015] A second light conversion part, the second light conversion part is arranged on the surface of the light-transmitting bulb shell and is spaced from the first light conversion part, the second light conversion part is adapted to convert the wavelength of the second sub-light.

[0016] In an embodiment of the present application, the light emitted from the light source assembly is called initial light, and the light emitted from the second light conversion part is called secondary light, the intensity of at least one wavelength of light in the initial light is greater than that in the secondary light.

[0017] In an embodiment of the present application, the intensity of at least one wavelength of light in the secondary light is greater than that in the initial light.

[0018] In an embodiment of the present application, the second light conversion part is arranged on the inner surface or the outer surface of the light-transmitting bulb shell.

[0019] The second light conversion part is multiple in number in an embodiment of the present application, and the second light conversion parts are spaced from each other.

[0020] The second light conversion part has a first surface defining an area of the second light conversion part in an embodiment of the present application, and the light-transmissive bulb has a second surface, the second light conversion part is arranged on the second surface, the second surface is defined as a total surface area of the light-transmissive bulb, and a ratio of a total of the second light conversion part areas to the total surface area of the light-transmissive bulb ranges from 0.1% to 95%.

[0021] At least part of the first sub-light rays and the second sub-light rays are emitted after passing through the second surface in an embodiment of the present application, and at least part of the first sub-light rays and the second sub-light rays are emitted after passing through the first surface and the second surface.

[0022] The second light conversion part includes at least one light conversion material and a light-transmissive adhesive material in an embodiment of the present application, and the second light conversion part is coated on the light-transmissive bulb.

[0023] The structure of the second light conversion part is one or a combination of convex lenses, concave mirrors, and flat mirrors in an embodiment of the present application.

[0024] The lamp head is further included in an embodiment of the present application, the lamp head is connected to the light-transmissive bulb, and the lamp head and the light-transmissive bulb form a sealed space, and the light source assembly is arranged in the sealed space.

[0025] The core column is further included in an embodiment of the present application, the core column is connected to the lamp head and electrically connected to the lamp head, the light source assembly is fixed to the core column and electrically connected to the core column, and the light source assembly is electrically connected to the lamp head through the core column.

[0026] One of the purposes of the present application is to provide an LED lighting device, which includes:

[0027] The light-transmissive bulb includes a first sub-bulb on the inner side and a second sub-bulb on the outer side.

[0028] The light source assembly is arranged in the first sub-bulb, and the light source assembly includes a light emitter.

[0029] The first light conversion part is arranged in the first sub-bulb, and the second light conversion part is arranged in the second sub-bulb.

[0030] Wherein the light emitted from the light source assembly is converted in wavelength by the first light conversion part at least in part, the light converted in wavelength is called first sub light, the light not converted in wavelength is called second sub light, at least part of the second sub light passes through the second light conversion part arranged on the second sub bubble shell and is converted in wavelength by the second light conversion part at least in part before being emitted.

[0031] In an embodiment of the present application, the light emitted from the light source assembly is called initial light, the light emitted after the initial light is converted in wavelength by the second light conversion part is called secondary light, the intensity of the light of at least one wavelength in the initial light is greater than the intensity of the light of the wavelength in the secondary light.

[0032] In an embodiment of the present application, the secondary light contains the intensity of the light of at least one wavelength, which is greater than the intensity of the light of the wavelength in the initial light.

[0033] In an embodiment of the present application, the first sub bubble shell and the second sub bubble shell are filled with at least one inert gas.

[0034] In an embodiment of the present application, the number of the first light conversion part is at least one, and the first light conversion part is arranged on the inner side or the outer side of the first sub bubble shell.

[0035] In an embodiment of the present application, the number of the second light conversion part is at least one, and the second light conversion part is arranged on the inner side or the outer side of the second sub bubble shell.

[0036] In an embodiment of the present application, the structure of the second light conversion part is one or a combination of convex lens, concave mirror and flat mirror.

[0037] In an embodiment of the present application, a lamp head and a core column are further included; the lamp head is connected with the light-transmitting bubble shell, and the lamp head and the light-transmitting bubble shell form a sealed space inside the first sub bubble shell; the core column is connected with the lamp head and electrically connected with the lamp head, the light source assembly is fixed to the core column and electrically connected with the core column, and the light source assembly is electrically connected with the lamp head through the core column.

[0038] One of the purposes of the present application is to provide a LED lighting device, comprising:

[0039] A base, the base comprises a bottom plate and a side wall surrounding the bottom plate; the side wall is connected head to tail and forms a groove structure with the bottom plate;

[0040] At least one light source assembly, the light source assembly is arranged in the groove structure, and the light source assembly comprises a light emitter and a first light conversion part covering the light emitter;

[0041] a light processing unit, the light processing unit is covered on the base and covers the light source assembly completely; at least one second light conversion part is arranged on the light processing unit, at least part of the light emitted by the light source assembly passes through the second light conversion part and is converted in wavelength;

[0042] at least one hanging support assembly, the hanging support assembly is arranged outside the base;

[0043] a power supply assembly, the power supply assembly is arranged outside the side wall and is attached to the side wall The other aspects and advantages of the present application can be easily understood by those skilled in the art from the following detailed description. Only the exemplary embodiments of the present application are shown and described in the following detailed description. As those skilled in the art will realize, the present application is capable of modifications in the spirit and scope of the application as claimed. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive. BRIEF DESCRIPTION OF DRAWINGS

[0044] The specific features of the application are shown in the appended claims. The features and advantages of the application can be better understood by referring to the exemplary embodiments and the accompanying drawings described in detail below. The drawings are briefly described as follows:

[0045] Figure 1 is a front view of the lighting device according to an embodiment of the present application in FIG. 1 of an embodiment of the present application;

[0046] Figure 2 is a sectional view along the line segment I-I of FIG. 1 of an embodiment of the present application;

[0047] Figure 3 is a partially enlarged schematic view of the light source assembly of FIG. 1 of an embodiment of the present application;

[0048] Figures 4-6 is a sectional view along the line segment I-I of FIG. 1 of the lighting device according to other embodiments of the present application in an embodiment of the present application;

[0049] Figure 7 is a front view of the lighting device according to another embodiment of the present application in an embodiment of the present application;

[0050] Figure 8 is a sectional view along the line segment II-II of FIG. 7 of an embodiment of the present application;

[0051] Figure 9 is a sectional view along the line segment II-II of FIG. 7 of the lighting device according to other embodiments of the present application in an embodiment of the present application;

[0052] Figure 10AA schematic view of another embodiment of the application in which the light conversion layer is disposed proximate to the lamp head;

[0053] Figure 10B A schematic view of another embodiment of the application in which the light conversion layer is disposed proximate to the lamp head;

[0054] Figure 11 A schematic view of a lighting device of an embodiment of the application in which a double bubble is provided;

[0055] Figure 12 A schematic view of an embodiment of a lighting device of another embodiment of the application;

[0056] Figure 13 A schematic view of a peak curve of a spectrum of a wavelength of light in the primary light and the secondary light, respectively, of an embodiment of the application;

[0057] Figure 14 A schematic view of an exploded view of an LED lighting device of another embodiment of the application.

[0058] Drawing reference: 100, LED lighting device; 110, light-transmissive bubble; 1110, first sub-bubble; 1111, second sub-bubble; 120, light source assembly; 121, light emitter; 122, first light conversion portion; 130, second light conversion portion; 131, light conversion material; 132, light-transmissive adhesive material; 133, light-transmissive adhesive layer; 140, lamp head; 150, third light conversion portion; 160, stem; A-A, B-B, line segment; EI, inner edge; HI, hole; HR, hollow range; SE, external surface; SN, internal surface; S1, first surface; S2, second surface; 200, LED lighting device; 201, light processing unit (light exit surface); 202, base; 2020, bottom plate; 2021, side wall; 203, hanging support assembly; 204, power supply assembly; DETAILED DESCRIPTION

[0059] The following describes embodiments of the application by way of specific, concrete examples, from which those skilled in the art will readily understand other advantages and effects of the application from the content disclosed in the description.

[0060] In the following description, reference is made to the accompanying drawings, which are meant to facilitate the understanding of several embodiments of the application. It should be appreciated that other embodiments can also be used and that changes in the module or unit composition, electricity, and operation can be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered limiting, and the scope of the embodiments of the application is only limited by the claims of the published patent. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the application.

[0061] Many practical details are described in the following description for purposes of illustration, and in order to enable practice of the application. However, it is to be understood that those having ordinary skill in the art will be able to practice the application without the need for many of these details. In other instances, well-known structures and functions have not been described in detail in order to avoid obscuring the application. In addition, some embodiments are only described in a general fashion as they are not necessary for an inventive comprehension of the application. Also, some of the figures can have been simplified by the omission of commonly understood structures and components. If possible, the features of different embodiments can be interchanged, where technically practicable.

[0062] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure. Unless specifically defined otherwise, these terms are not to be interpreted in an idealized or overly formal sense.

[0063] It will be understood that when an element such as a layer, region or substrate is referred to as being "on" or extending "over" another element, it can be directly on or extend directly over the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" or extending "directly over" another element, there are no intervening elements present. It will also be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

[0064] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" can be used herein for the purposes of describing one element, layer or region's relationship to another element, layer or region as illustrated in the figures. It will be understood that such terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. In the present application, the terms "vertical", "horizontal", "parallel", "perpendicular" are defined as follows: include within 10% of the standard definition. For example, vertical typically means 90 degrees from a reference line, but in the present application, vertical means include within 80 to 100 degrees.

[0065] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and / or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0066] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0067] Comparative quantitative terms such as "above" and "below" are intended to encompass the concept of equality unless expressly stated otherwise. As an example, "above" can mean not only "greater than" in a mathematical sense, but also "equal to."

[0068] In the present application, the LED lighting device can be a common lighting device including a bulb, a panel light, a strip light, a downlight, a ceiling light, etc., but is not limited thereto.

[0069] In some embodiments of the present application, the LED lighting device can be a bulb structure, i.e., an LED bulb. Please refer to Figures 1-2 wherein Figure 1 is a front view of the bulb 100 according to an embodiment of the present application, Figure 2 is a front view of the bulb 100 according to an embodiment of the present application, Figure 1 is a cross-sectional view taken along the line segment I-I. In the present embodiment, as Figures 1-2As shown, an LED bulb 100 comprises a light-transmitting bulb 110, a lamp cap 140, at least one light source assembly 120, at least one second light conversion portion 130, and a stem 160. The light-transmitting bulb 110 is made of, for example, glass or other light-transmitting material. The light source assembly 120 is located inside the light-transmitting bulb 110 and spaced apart from the light-transmitting bulb 110. The light source assembly 120 is configured to emit light (not shown). The second light conversion portion 130 is disposed on the light-transmitting bulb 110 and configured to allow light to pass through. The light-transmitting bulb 110 is connected to the lamp cap 140, i.e., the light-transmitting bulb 110 and the lamp cap 140 form a sealed space inside the light-transmitting bulb 110, and the light source assembly 120 is disposed in the sealed space. The stem 160 is connected to the lamp cap 140 and electrically connected to the lamp cap 140, and is located inside the light-transmitting bulb 110. The light source assembly 120 is fixed on the stem 160 and electrically connected to the stem 160, so as to achieve electrical connection between the light source assembly 120 and the lamp cap 140. The lamp cap 140 is matched with a lamp holder in the external use environment and is electrically connected, and the lamp holder is powered by an external power source or mains, so as to achieve power supply of the bulb.

[0070] Please refer to Figure 3 , Figure 3 for a partial enlarged view of the light source assembly 120 in an embodiment of the present application. Figure 1 In the present embodiment, as shown in Figure 3As shown, the light source assembly 120 comprises a light emitter 121 and a first light conversion portion 122. The light emitter 121 is configured to emit light rays as described above. In practice, the light emitter 121 can be, for example, an LED chip, and the light source assembly 120 comprises a plurality of LED chips, or in other words, a plurality of light emitting diodes, and the first light conversion portion 122 is coated on the plurality of LED chips, or in other words, the plurality of light emitting diodes (i.e., the first light conversion portion 122 is coated on the light emitter 121), and the light source assembly 120 is formed in combination with other materials and components (not shown in this embodiment for simplicity of structure) and can be referred to as a filament, or in other words, an LED filament, in some other embodiments. The LED filament can be a non-flexible filament or a flexible filament with a degree of flexibility. The first light conversion portion 122 is disposed on the light emitter 121, and the first light conversion portion 122 is configured to allow light rays to pass through and convert at least a portion of the light rays emitted from the light emitter 121. The conversion can be a conversion of color, wavelength, frequency, intensity of light, or a realization of diffusion, convergence, refraction, reflection, diffraction, etc. It is worth noting that in this embodiment, the first light conversion portion 122 and the second light conversion portion 130 are spaced apart from each other, i.e., spaced apart from each other, i.e., the second light conversion portion 130 is spaced apart from the light emitter 121 by a certain distance and the second light conversion portion 130 does not contact the light emitter 121, i.e., the second light conversion portion 130 does not directly contact the light emitter 121. It can also be said that the second light conversion portion 130 is spaced apart from the light emitter 121 by the first light conversion portion, a gas medium, a bubble shell, or one or more other components in the bubble shell.

[0071] In more detail, when the light rays emitted from the light emitter 121 pass through the first light conversion portion 122, most of the light rays are converted in color (or in other words, in wavelength, etc.) by the first light conversion portion 122, and the remaining small portion of the light rays is not converted in color (or in other words, not converted in wavelength, etc.) by the first light conversion portion 122. For the convenience of explanation, the portion of the light rays that is converted in color by the first light conversion portion 122 is referred to as "first sub-light rays" below, and the portion of the light rays that is not converted in color by the first light conversion portion 122 is referred to as "second sub-light rays". For example, the first sub-light rays can be green, yellow, red, or white, etc., and the second sub-light rays maintain the original color, such as blue light or near-ultraviolet light. When the second sub-light rays that are not converted in color by the first light conversion portion 122 of the light source assembly 120 reach the second light conversion portion 130, the second light conversion portion 130 converts the second sub-light rays in color. In other words, the second light conversion portion 130 can also convert the wavelength of the second sub-light rays, i.e., the second light conversion portion 130 excites the light directly emitted or indirectly emitted by the light emitter 121 at a remote location, i.e., away from the light emitter 121.

[0072] In short, when the LED bulb 100 is turned on, the light-emitting element 121 of the light source assembly 120 emits light. This light first passes through the first light conversion section 122 of the light source assembly 120, forming the aforementioned first and second sub-light rays. The first and second sub-light rays will appear as one color after passing through the portion of the light-transmitting bulb 110 without the second light conversion section 130. However, after passing through the light-transmitting bulb 110 and the second light conversion section 130, the second sub-light rays will appear as a different color because the second light conversion section 130 converts the color of the second sub-light rays. This allows the bulb 100 to produce more diverse color variations, enhancing its decorative effect and effectively increasing its commercial value. Simultaneously, the second light conversion section 130 converts the second sub-light rays that were not converted by the first light conversion layer 122, improving luminous efficiency to some extent and reducing some unwanted light from users and designers. Depending on the actual situation, the color of the second sub-light rays after conversion by the second light conversion section 130 may be the same as or different from the color of the first sub-light rays. For example, the first sub-ray may be green, red, yellow or white, and the second sub-ray may be yellow, white, red or green after being converted by the second light conversion unit 130, but this application is not limited to this.

[0073] In some other embodiments of this application, the first sub-ray and the second sub-ray will present a single light intensity after passing through the portion of the light-transmitting bulb 110 without the second light conversion section 130. However, after passing through the light-transmitting bulb 110 and the second light conversion section 130, the second sub-ray will present a different light intensity because the second light conversion section 130 converts the light intensity of the second sub-ray. This results in different light intensity variations on the light-transmitting bulb 110, forming different pattern settings. This allows the bulb 100 to produce more diverse pattern and color variations, adapting to more usage environment requirements. In other words, the area of ​​the light-transmitting bulb 110 with the second light conversion layer 130 and the area without the second light conversion layer 130 will have significantly different optical performance, thereby highlighting the shape of the area with the second light conversion layer 130.

[0074] Specifically, such as Figure 1 As shown, the second light conversion unit 130 has a first surface S1, which defines the area of ​​the second light conversion unit. The light-transmitting bulb 110 has a second surface S2, and the second light conversion unit 130 is disposed on the second surface S2 of the light-transmitting bulb 110. The second surface S2 defines the total surface area of ​​the light-transmitting bulb 110. In this embodiment, the ratio of the area of ​​the second light conversion unit 130 to the total surface area of ​​the light-transmitting bulb 110 is between 5% and 95%. In other words, the coverage of the second light conversion unit 130 on the second surface S2 of the light-transmitting bulb 110 is greater than or equal to 5% and less than or equal to 95%, i.e., 5% ≤ S1 / S2 ≤ 95%.

[0075] Of course, in some other embodiments, the ratio of the area of ​​the second light conversion section 130 to the total surface area of ​​the light-transmitting bulb 110 can also be between 0.1% and 95%. In other words, the coverage of the second light conversion section 130 on the second surface S2 of the light-transmitting bulb 110 is greater than or equal to 0.1% and less than or equal to 95%, that is, 0.1% ≤ S1 / S2 ≤ 95%.

[0076] Furthermore, such as Figure 1 As shown, there are multiple second light conversion sections 130, and these second light conversion sections 130 are separated from each other. In other words, the second surface S2 of the light-transmitting bulb 110 is exposed between two adjacent second light conversion sections 130, that is, the part of the second surface S2 not covered by the second light conversion section 130, or at least a part of the second surface S2 is not provided with the second light conversion section 130. Therefore, at least a portion of the first sub-ray and the second sub-ray can pass between two adjacent second light conversion sections 130, that is, at least a portion of the first sub-ray and the second sub-ray only pass through the second surface S2, that is, only pass through the light-transmitting bulb 110 before being emitted; and at least a portion of the first sub-ray and the second sub-ray pass through the second surface S2 and the first surface S1 before being emitted.

[0077] Furthermore, the ratio of the total area of ​​the light conversion portions on the first surface S1 to the total surface area of ​​the second surface S2 is also between 5% and 95%, i.e., 5% ≤ S1 / S2 ≤ 95%. In other words, when there are multiple second light conversion portions 130, the coverage of the second light conversion portions 130 on the second surface S2 of the light-transmitting bulb 110 is still greater than or equal to 5% and less than or equal to 95%. In practical applications, the shapes of these second light conversion portions 130 can be the same or different, such as one or a combination of circles, rectangles, triangles, polygons, dots, or lines.

[0078] In another embodiment, when there are multiple second light conversion units 130, the coverage of the second light conversion units 130 on the second surface S2 of the light-transmitting bulb 110 may be greater than or equal to 0.1% and less than or equal to 95%, that is, 0.1% ≤ S1 / S2 ≤ 95%.

[0079] Specifically, such as Figure 2As shown, the second light conversion part 130 is disposed on the outer surface SE of the light-transmitting bulb 110, and the outer surface SE is the aforementioned second surface S2. Furthermore, in this embodiment, the second light conversion part 130 is coated on the outer surface SE of the light-transmitting bulb 110, and the second light conversion part 130 includes at least one light conversion material 131 and a light-transmitting adhesive 132. The light conversion material 131 is mixed in the light-transmitting adhesive 132, which may be, for example, silicone, resin (such as organosilicon-modified resin), etc. In practice, the light conversion material 131 may be, for example, a single-color phosphor or phosphors of different colors, and is configured to convert the color of the second sub-ray. Depending on the actual situation, the light conversion material 131 may also be other materials capable of forming light scattering.

[0080] Please refer to Figure 4 . Figure 4 As shown in one embodiment of this application Figure 1 A cross-sectional view of a bulb 100 according to another embodiment of this application along line segment II. In this embodiment, as... Figure 4 As shown, the second light conversion part 130 can be coated on the inner surface SN of the light-transmitting bubble 110 according to the actual situation, and the inner surface SN is the second surface S2 mentioned above.

[0081] Please refer to Figures 5-6 , Figures 5-6 As shown in one embodiment of this application Figure 1 A cross-sectional view of an LED bulb 100 according to other embodiments of this application along line segment II. In this embodiment, as... Figures 5-6 As shown, the second light conversion unit 130 includes at least one light conversion material 131 and a light-transmitting adhesive layer 133. The light conversion material 131 is sandwiched between the light-transmitting adhesive layer 133 and the light-transmitting bubble shell 110. The light-transmitting adhesive layer 133 is, for example, silicone. In practice, the light conversion material 131 is, for example, a single-color phosphor or phosphors of different colors, and is configured to convert the color of the second sub-ray. Depending on the actual situation, the light conversion material 131 can also be other materials capable of forming light scattering. Specifically, such as... Figure 5 As shown, the light conversion material 131 is sandwiched between the light-transmitting adhesive layer 133 and the outer surface SE of the light-transmitting bubble 110, and the outer surface SE is the aforementioned second surface S2. Furthermore, depending on the actual situation, such as... Figure 6 As shown, the light conversion material 131 is sandwiched between the light-transmitting adhesive layer 133 and the inner surface SN of the light-transmitting bubble shell 110, and the inner surface SN is the second surface S2 mentioned above.

[0082] In some embodiments of this application, the second light conversion section 130 is provided with different surface shapes, resulting in different light emission effects of the LED bulb 100. For example, when all the surface shapes of the second light conversion section 130 are provided on the outer side of the light-transmitting bulb 110, i.e., on the outer surface SE, the surface is convex along the direction from the inside to the outside of the LED bulb 100, converging the light emitted by the LED bulb 100. That is, the second light conversion section 130 forms a convex lens structure, thereby achieving the light effect of a convex lens.

[0083] In some embodiments of this application, when all the second light conversion parts 130 are disposed on the outer side of the light-transmitting bulb 110, i.e., on the outer surface SE, the surface is concave along the direction from the inside to the outside of the LED bulb 100, thus diffusing the light emitted by the bulb 100. That is, the second light conversion parts 130 form a concave lens structure, thereby achieving the light effect of a concave lens.

[0084] Of course, in some other embodiments of this application, the second light conversion part 130 may be disposed inside the light-transmitting bulb 110, that is, on the inner surface SN, and all the second light conversion parts 130 may be convex or concave along the direction from the outside to the inside of the LED bulb 100.

[0085] Of course, in some other embodiments of this application, the second light conversion unit is a plano mirror structure.

[0086] In some embodiments of this application, the structure of the second light conversion part 130 disposed in the light-transmitting bubble shell is one or more combinations of a convex lens, a concave mirror, and a planar mirror.

[0087] In some other embodiments of this application, all the second light conversion parts 130 may be disposed on the outer surface SE, and along the direction from the inside to the outside of the LED bulb 100, at least a portion of the second light conversion parts 130 may be convex and at least a portion of the second light conversion parts 130 may be concave.

[0088] In some embodiments of this application, all the second light conversion parts 130 may be disposed on the outer surface SE, and along the direction from the inside to the outside of the LED bulb 100, the second light conversion parts 130 may be one of a convex surface, a concave surface, or a plane, or a combination of multiple types.

[0089] In some embodiments of this application, all the second light conversion parts 130 may be disposed on the inner surface SN, and along the direction from the outside to the inside of the LED bulb 100, at least a portion of the second light conversion parts 130 may be convex and at least a portion of the second light conversion parts 130 may be concave.

[0090] In some embodiments of this application, all the second light conversion parts 130 may be disposed on the inner surface SN, and along the direction from the outside to the inside of the LED bulb 100, the second light conversion parts 130 may be one of a convex surface, a concave surface, or a plane, or a combination of multiple types.

[0091] In some embodiments of this application, a second light conversion part 130 is provided on both the outer surface SE and the inner surface SN of the light-transmitting bulb 110. The second light conversion part 130 located on the outer surface SE is convex along the direction from the inside to the outside of the LED bulb 100, and the second light conversion part 130 located on the inner surface SN is concave along the direction from the outside to the inside of the LED bulb 100.

[0092] In some embodiments of this application, a second light conversion part 130 is provided on both the outer surface SE and the inner surface SN of the light-transmitting bulb 110. The second light conversion part 130 located on the outer surface SE is convex in the direction from the inside to the outside of the LED bulb 100, and the second light conversion part 130 located on the inner surface SN is also convex in the direction from the outside to the inside of the LED bulb 100.

[0093] In some embodiments of this application, a second light conversion part 130 is provided on both the outer surface SE and the inner surface SN of the light-transmitting bulb 110. The second light conversion part 130 located on the outer surface SE is concave along the direction from the inside to the outside of the LED bulb 100, and the second light conversion part 130 located on the inner surface SN is convex along the direction from the outside to the inside of the LED bulb 100.

[0094] In some embodiments of this application, a second light conversion part 130 is provided on both the outer surface SE and the inner surface SN of the light-transmitting bulb 110. The second light conversion part 130 located on the outer surface SE is concave along the direction from the inside to the outside of the LED bulb 100, and the second light conversion part 130 located on the inner surface SN is also concave along the direction from the outside to the inside of the LED bulb 100.

[0095] In some embodiments of this application, a second light conversion part 130 is provided on both the outer surface SE and the inner surface SN of the light-transmitting bubble shell 110. The surface shape of the second light conversion part 130 on both the outer surface SE and the inner surface SN includes one or more of concave, convex, and planar surfaces.

[0096] By optimizing the surface shape of the second light conversion unit 130, the light output performance at the second light conversion unit 130 is improved, such as enhancing the visual effect at the position of the second light conversion unit 130, thereby strengthening the light output effect of different areas of the light-transmitting bulb 110, and making the LED bulb 100 better meet the user's needs by highlighting the display.

[0097] When both the inner surface SN and the outer surface SE are provided with the second light conversion unit 130, both the inner surface SN and the outer surface SE have areas that are not covered by the second light conversion unit 130, that is, neither the inner surface SN nor the outer surface SE is completely covered by the second light.

[0098] Please refer to Figures 7-8 , Figure 7This is a front view of an LED bulb 100 according to another embodiment of this application, as described in one example of this application. Figure 8 As shown in one embodiment of this application Figure 7 A cross-sectional view along line segment II-II. In this embodiment, as... Figures 7-8 As shown, the second light conversion unit 130 has an inner edge EI, which defines a hollow range HR. In other words, the hollow range HR defined by the inner edge EI exposes the second surface S2 of the light-transmitting bubble 110. Therefore, a portion of the first sub-ray and the second sub-ray can pass through the hollow range HR of the second light conversion unit 130.

[0099] Please refer to Figure 9 , Figure 9 As shown in one embodiment of this application Figure 7 A cross-sectional view of an LED bulb 100 according to other embodiments of this application along line segment II-II. In this embodiment, as... Figure 9 As shown, the light-transmitting bulb 110 has a perforation HI, which is aligned with the hollow region HR. Therefore, at least a portion of the first and second sub-light rays can pass through the perforation HI of the light-transmitting bulb 110 and the hollow region HR of the second light conversion section 130. That is, at least a portion of the first and second sub-light rays can be emitted from the LED bulb 100 without passing through the second light conversion section 130. More specifically, the first and second sub-light rays can be emitted directly from the LED bulb 100 without passing through any medium other than air. For example, in this embodiment, the light-transmitting bulb 110 may be made of plastic, but this application is not limited to this.

[0100] In one embodiment, heat dissipation particles are also provided in the second light conversion unit 130.

[0101] In some embodiments, a second light conversion part 130 may be provided on both the inner surface SN and the outer surface SE of the light-transmitting bubble 110.

[0102] In some embodiments of this application, the second light conversion unit 130 may also be replaced by a light-reflecting material, thereby reducing or eliminating the light output of the second light conversion unit 130.

[0103] In some embodiments of this application, the second light conversion unit 130 is disposed on the bulb 100 near the lamp holder 140, and the second light conversion unit 130 mainly functions as a light reflector, reflecting and converging the light emitted from the light source assembly 120 towards the lamp holder 140. When the LED bulb 100 is installed and used, it is generally mounted to the environment (such as a lamp holder or mounting surface) through the lamp holder 140. The lamp holder or mounting surface is generally not an area that the LED bulb 100 needs to be particularly illuminated, thus reducing or eliminating illumination in that direction and redirecting the illumination in other directions to optimize the light emission effect of the LED bulb 100.Figure 10A Alternatively, as shown in 10B, an annular second light conversion section 130 is provided near the lamp head 140. This second light conversion section 130 can achieve a light reflection effect. Furthermore, because the diameter of the light-transmitting bulb 110 in the area near the lamp head 140 gradually increases along the direction from the lamp head 140 to the light-transmitting bulb 110, combined with the second light conversion section 130, a reflector-like structure can be formed, converging the light towards the direction from the lamp head 140 to the light-transmitting bulb 110, i.e., away from the lamp body 140, thus improving the light output in that direction. See also... Figure 10B The lamp holder 140 and the second light conversion part 130 are spaced a certain distance apart, that is, at least the light-transmitting bulb 110 that is not covered by the second light conversion part 130 is directly connected or in contact with the lamp body 140. This design can avoid the problem of the bulb 100 forming a dark spot under the lamp, and improve the overall aesthetics of the bulb 100 in the actual use environment and the overall effect of the bulb 100 integrating with the environment.

[0104] In one embodiment of this application, the light emitted from the light source 121 first travels to the first light conversion section 122. In other words, the light source 121 and the first light conversion section 122 are in direct contact. The first light conversion section 122 covers the surface of the light source 121. The light emitted from the light source 121 directly enters the first light conversion section 122. The first light conversion section 122 is provided with at least one phosphor particle (or light conversion material). At least a portion of the light emitted from the light source 121 is excited by the phosphor in the first light conversion section 122 and converted into a first sub-ray, which is then emitted from the first light conversion section 122. The light emitted from the light source 121 that is not excited by the first light conversion section 121, i.e., the second sub-ray, is also emitted from the first light conversion section 122. In one embodiment of this application, a second light conversion section 130 is provided on the light-transmitting bulb 110. A certain gap is maintained between the second light conversion section 130 and the first light conversion section 122 and the light emitter 121, that is, the second light conversion section 130 does not directly contact the first light conversion section 122 or the light emitter 121. At least one filling medium exists between the second light conversion section 130 and the first light conversion section 122. The second sub-ray reaches the second light conversion section after propagating a certain distance in the filling medium. That is, the light emitted from the first light conversion section 122 that has not been converted by the first light conversion section 122, or the original light emitted from the light emitter 121, needs to travel a long distance before reaching the second light conversion section 130, and is then excited a second time, that is, remotely excited, in the second light conversion section 130, converting the part of the second sub-ray that has not been converted by the first light conversion section 122.

[0105] Of course, in some embodiments, the light that has been converted from the first light conversion unit 122, namely the first sub-ray, can also be converted again by the second light conversion unit 130.

[0106] In one embodiment of this application, the second light conversion unit 130 converts at least a portion of the second sub-ray.

[0107] In one embodiment of this application, the second light conversion unit 130 converts at least a portion of the first sub-ray.

[0108] In one embodiment of this application, the second light conversion unit 130 converts at least a portion of the first sub-ray and at least a portion of the second sub-ray.

[0109] In one embodiment of this application, the second light conversion unit 130 converts at least a portion of the first sub-ray and the second sub-ray.

[0110] In one embodiment of this application, the LED bulb 100 is provided with at least one light-transmitting bulb shell 110. For example, in one embodiment of this application, a two-layer nested light-transmitting bulb shell 110 is provided, that is, the outer light-transmitting bulb shell is fitted over the inner light-transmitting bulb shell, and at least one of the inner and outer light-transmitting bulb shells is provided with at least one layer of second light conversion part 130. For ease of reference, the inner light-transmitting bulb shell is referred to as the first sub-bubble shell 1110, and the outer light-transmitting bulb shell is referred to as the second sub-bubble shell 1111. Figure 11 This is a schematic diagram of a bulb with a double-layer bulb shell according to an embodiment of this application. A light conversion layer is provided on both the first sub-bulb shell 1110 and the second sub-bulb shell. The light conversion layer on the first sub-bulb shell 1110 is referred to as the second light conversion part 130, and the light conversion layer on the second sub-bulb shell 1111 is referred to as the third light conversion part 150. The second light conversion part 130 can be located inside or outside the first sub-bulb shell 1110, and there can be one or more of them. That is, at least one second light conversion part 130 is provided on the first sub-bulb shell 1110, and the first sub-bulb shell 1110 includes an area where the second light conversion part 130 is provided and an area where the second light conversion part 130 is not provided. Similarly, the third light conversion part 150 can also be located inside or outside the second sub-bulb shell 1111, and there can be one or more (i.e., at least one). The second sub-bulb shell 1111 includes an area where the third light conversion part 150 is provided and an area where the third light conversion part 150 is not provided.

[0111] In one embodiment of this application, a second light conversion section 130 is disposed on the outer surface of the first sub-bubble shell 1110, and a third light conversion section 150 is disposed on the outer surface of the second sub-bubble shell 1111. The second light conversion section 130 and the third light conversion section 150 have at least a partial overlap area along the light emission direction of the light source assembly 120 (or along the light emission body 121) (the overlap refers to at least a partial overlap of the projection along a certain direction in a spatial position); or in other words, the light emitted from the light source assembly 120 (light emission body 121) passes at least partially through the second light conversion section 130 located on the first sub-bubble shell 1110. Of the light passing through the second light conversion section 130, at least a portion further passes through the third light conversion section 150 located on the second sub-bulb shell 1111 and is finally emitted from the bulb 100. That is, the light emitted from the light source assembly 120 (light emitter 121) passes through the second light conversion section 130 and then through the third light conversion section 150. In other words, at least a portion of the light emitted from the light source assembly 120 (or light emitter 121) passes through the two light conversion layers located on the light-transmitting bulb shell 110. The light source assembly 120 includes a light emitter 121 and a first light conversion unit 122. The first light conversion unit 122 is disposed on the light emitter 121. Light emitted from the light emitter 121 passes through the first light conversion unit 122 and is converted by it. The light rays converted by it are called "first sub-light rays". At the same time, at least a portion of the light rays emitted from the light emitter 121 and passing through the first light conversion unit 122 are not converted by the first light conversion unit 122. The portion of the light rays that are not converted is called "second sub-light rays".

[0112] In one embodiment of this application, at least a portion of the first sub-ray beam is emitted from the first light conversion unit 122 and projected onto the first sub-bubble shell 1110 located on the inner side. It does not pass through the second light conversion unit 130, that is, it passes through the area of ​​the first sub-bubble shell 1110 where the second light conversion unit 130 is not provided and is emitted onto the second sub-bubble shell 1111. At least a portion of it is emitted directly from the area of ​​the second sub-bubble shell 1111 where the third light conversion unit 150 is not provided. The emission path of the first sub-ray beam is called light path a.

[0113] In one embodiment of this application, at least another portion of the first sub-ray beam is emitted from the first light conversion unit 122 and projected onto the first sub-bubble shell 1110 located on the inner side. It does not pass through the second light conversion unit 130, that is, it passes through the area of ​​the first sub-bubble shell 1110 where the second light conversion unit 130 is not provided and is emitted to the second sub-bubble shell 1111. At least a portion of it passes through the third light conversion unit 150 on the second sub-bubble shell 1111 and is emitted. The emission path of the first sub-ray beam is called light path b.

[0114] In one embodiment of this application, at least a portion of the first sub-ray beam is emitted from the first light conversion unit 122 and projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. After passing through the second light conversion unit 130, it is projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is not provided and then is emitted. The emission path of the first sub-ray beam is referred to as light path c.

[0115] In one embodiment of this application, at least a portion of the first sub-ray beam is emitted from the first light conversion unit 122 and projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. After passing through the second light conversion unit 130, it is projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is disposed and is emitted. The emission path of the first sub-ray beam is referred to as the light path d.

[0116] In one embodiment of this application, at least another portion of the second sub-ray beam is emitted from the first light conversion unit 122 and projected onto the first sub-bubble shell 1110 located on the inner side. It does not pass through the second light conversion unit 130, that is, it passes through the area of ​​the first sub-bubble shell 1110 where the second light conversion unit 130 is not provided and is emitted onto the second sub-bubble shell 1111. At least a portion of it is emitted directly from the area of ​​the second sub-bubble shell 1111 where the third light conversion unit 150 is not provided. The emission path of this second sub-ray beam is called the light path e.

[0117] In one embodiment of this application, at least another portion of the second sub-ray beam is emitted from the first light conversion unit 122 and projected onto the first sub-bubble shell 1110 located on the inner side. It does not pass through the second light conversion unit 130, that is, it passes through the area of ​​the first sub-bubble shell 1110 where the second light conversion unit 130 is not provided and is emitted to the second sub-bubble shell 1111. At least a portion of it passes through the third light conversion unit 150 on the second sub-bubble shell 1111, is converted by the third light conversion unit 150 and is emitted. The emission path of the second sub-ray beam is called the light path f.

[0118] In one embodiment of this application, at least a portion of the second sub-ray beam is emitted from the first light conversion unit 122 and projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. After passing through the second light conversion unit 130, it is projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is not provided and then is emitted. The emission path of the second sub-ray beam is referred to as g.

[0119] In one embodiment of this application, at least a portion of the second sub-ray beam is emitted from the first light conversion unit 122 and projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. After passing through the second light conversion unit 130, it is projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is provided, passes through the third light conversion unit 150 and is emitted. The emission path of the second sub-ray beam is referred to as h.

[0120] The emission paths of the first sub-ray and the second sub-ray can be arbitrarily combined to form a combined emission path of the first sub-ray and the second sub-ray. More specifically, it can be any one of emission path a, emission path b, emission path c, and emission path d, and any one of emission path e, emission path f, emission path g, and emission path h can be combined with each other.

[0121] In the above embodiments of this application, the second light conversion unit 130 can be configured to at least one of two states: convertible or non-convertible, and can be applied to the above embodiments according to actual needs.

[0122] In the above embodiments of this application, the third light conversion unit 150 can be configured to at least one of two states: convertible or non-convertible. This can be applied to the above embodiments according to actual needs.

[0123] In the above embodiments of this application, the second light conversion unit 130 can be configured to at least one of two states: convertible or non-convertible. It can be applied to the above embodiments according to actual needs.

[0124] In the above embodiments of this application, the third light conversion unit 150 can be configured to at least one of two states: convertible or non-convertible. This can be applied to the above embodiments according to actual needs.

[0125] For example, in one embodiment of this application, at least a portion of the first sub-light beam exits from the first light conversion unit 122 and is projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. It passes through the second light conversion unit 130 without being converted by it, and is then projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is located before exiting (i.e., along light path c). Similarly, at least a portion of the second sub-light beam exits from the first light conversion unit 122 and is projected onto the second light conversion unit 130 located on the inner side of the first sub-bubble shell 1110. It passes through the second light conversion unit 130 and is converted by it before being projected onto the second sub-bubble shell 1111. At least a portion of it passes through the area on the second sub-bubble shell 1111 where the third light conversion unit 150 is located. In the region of the switching unit 150, the light is converted and emitted by the third light conversion unit 150 (i.e., along the light path h). In this embodiment, the first sub-ray is configured to travel along the light path a, the second light conversion unit 130 is configured not to convert the first sub-ray, the third light conversion unit 150 is configured not to convert the first sub-ray, the second sub-ray is configured to travel along the light path h, the second light conversion unit 130 is configured to have light conversion function for the second sub-ray, and the third light conversion unit 150 is configured to have light conversion function for the second sub-ray. In this example, the travel path of the first sub-ray is configured as light path a, the travel path of the second sub-ray is configured as light path h, the second light conversion unit 130 and the third light conversion unit are configured not to convert the first sub-ray, and the second light conversion unit 130 and the third light conversion unit 150 are configured to convert the second sub-ray. In other embodiments of this application, other combinations can be selected as needed, which will not be listed here.

[0126] In one embodiment, the first sub-bubble shell 1110 and the second sub-bubble shell 1111 are relatively closed, meaning that the internal space of the first sub-bubble shell 1110 and the internal space of the second sub-bubble shell 1111 are not interconnected, and the internal space of the first sub-bubble shell 1110 is independent of the space formed between the first sub-bubble shell 1110 and the second sub-bubble shell 1111. The first sub-bubble shell 1110 is filled with at least one inert gas, and the space formed between the first sub-bubble shell 1110 and the second sub-bubble shell 1111 is filled with the same at least one inert gas.

[0127] In one embodiment, the first sub-bubble shell 1110 and the second sub-bubble shell 1111 are relatively closed, meaning that the internal space of the first sub-bubble shell 1110 and the internal space of the second sub-bubble shell 1111 are not interconnected, and the internal space of the first sub-bubble shell 1110 is independent of the space formed between the first sub-bubble shell 1110 and the second sub-bubble shell 1111. The first sub-bubble shell 1110 is filled with at least one inert gas, and the space formed between the first sub-bubble shell 1110 and the second sub-bubble shell 1111 is filled with at least one inert gas different from the gas inside the first sub-bubble shell 1110.

[0128] In one embodiment, the first sub-bulb shell 1110 and the second sub-bulb shell 1111 are interconnected, i.e., at least one through hole is provided. The through hole can be any area of ​​the first sub-bulb shell 1110, such as near or away from the lamp holder 140. That is, the internal space of the first sub-bulb shell 1110 is connected to the space formed between the first sub-bulb shell 1110 and the second sub-bulb shell 1111. The interior of the first sub-bulb shell 1110 and the interior of the second sub-bulb shell 1111 (i.e., the space between the first sub-bulb shell 1110 and the second sub-bulb shell 1111) are filled with at least one inert gas. The inert gas can flow between the first sub-bulb shell 1110 and the second sub-bulb shell 1111 through the through hole, thereby optimizing the heat dissipation of the bulb 100 through gas flow and segmentation.

[0129] In one embodiment, the light emitted from the light source assembly 120, or the light emitted from the light emitter 121 and passing through the first light conversion unit 122 (including a first sub-ray and a second sub-ray), is referred to as the initial light. That is, in one embodiment, the initial light includes at least a first sub-ray and a second sub-ray. The initial light contains at least one wavelength. The light emitted after the initial light passes through the second light conversion unit 130 is called the secondary light, and the light emitted after the secondary light passes through the third light conversion unit 150 is called the secondary light. (See reference...) Figures 1-6When the light-transmitting bulb 110 is a single-layer structure and the second light conversion unit 130 is directly disposed on the single-layer light-transmitting bulb 110, at least one wavelength of light in the spectrum of the initial light has a peak value that is significantly greater than the peak value of that wavelength of light in the secondary light. That is, the peak value of that wavelength of light in the secondary light is significantly smaller than the peak value in the initial light. In other words, the intensity of at least one wavelength of light in the initial light is significantly greater than the intensity of that wavelength of light in the secondary light. The intensity of that wavelength of light in the secondary light is significantly smaller than the intensity in the initial light. The peak value mentioned later in this article can also be described by intensity. In other words, light of at least one wavelength in the initial ray, after passing through the second light conversion unit 130, has at least a portion of that at least one wavelength converted by the second light conversion unit 130. This results in the secondary ray emitted from the second light conversion unit 130 having a significantly larger peak value in the primary ray spectrum compared to the secondary ray spectrum. In other words, the peak value of the light converted by the second light conversion unit in the secondary ray spectrum is significantly smaller than the peak value of the light in the primary ray spectrum. For example, in one embodiment, light within a certain wavelength range in the initial ray can be converted by the second light conversion unit 130 into light of another wavelength. The peak curve of this wavelength range in the spectrum of the initial ray is ①, and the peak curve of this wavelength range in the spectrum of the secondary ray is ②, as follows: Figure 13 The figure shows the peak curves of the spectrum of light of this wavelength in the initial ray and the secondary ray, respectively. As shown in the figure, the peak value of curve ① is significantly higher than that of curve ②.

[0130] On the other hand, light within at least one wavelength range in the initial light beam, after passing through the second light conversion unit 130, is at least partially converted into light within another wavelength range. That is, there exists light within at least one wavelength range whose peak-to-peak value in the spectrum of the secondary light beam is significantly greater than its peak-to-peak value in the initial light beam. For example, in some embodiments, at least a portion of the initial light beam contains blue light, and at least a portion of this blue light is converted into light of other wavelengths (e.g., red or green light) by the second light conversion unit 130. In this case, the peak-to-peak value of the blue light in the spectrum of the initial light beam is significantly greater than that in the spectrum of the secondary light beam; that is, the peak-to-peak value of the blue light in the spectrum of the secondary light beam is significantly smaller than that in the spectrum of the initial light beam. Of course, the light within the wavelength range converted by the second light conversion unit 130 can also be red, green, or other wavelengths. Similarly, its peak-to-peak value in the spectrum of the initial light beam and its peak-to-peak value in the spectrum of the secondary light beam are as described above.

[0131] In some embodiments, the third light conversion unit 150 converts at least a portion of the light in at least one wavelength range of the secondary light emitted from the second light conversion unit 130. Similarly, the light wave of a specific wavelength converted by the third light conversion unit 150 has a lower peak-to-peak value in the spectrum of the secondary light than in the spectrum of the secondary light.

[0132] In other words, when light passes through the light conversion layer from one side and exits from the other side, the light that can be converted by the light conversion layer has a higher peak value before passing through the light conversion layer than after passing through the light conversion layer in the spectrum; while the light that is converted has a lower peak value before passing through the light conversion layer than after passing through the light conversion layer.

[0133] Please see Figure 12 This is a schematic diagram of an embodiment of the bulb 100 in another embodiment of this application. As shown in the figure, the light-transmitting bulb shell 110 includes a first sub-bulb shell 1110 located on the inner side and a second sub-bulb shell 1111 located on the outer side. The light source assembly 120 is disposed inside the first sub-bulb shell 1110. The light source assembly 120 includes a light-emitting element 121, and the first light conversion part 122 is disposed on the first sub-bulb shell 1110. That is, the first light conversion part 122 and the light-emitting element 121 are spaced at a certain distance rather than being directly disposed on the light-emitting element 121. On 21, the light emitted by the light source 121 needs to travel a relatively long distance and diverge at a certain angle before it can reach the first sub-bubble shell 1110 and the first light conversion part 122 disposed on the first sub-bubble shell 1110. The number of first light conversion parts 122 is at least one, and it can be disposed on the inner or outer side of the first sub-bubble shell 1110. At least one second light conversion part 130 is disposed on the second sub-bubble shell 1111, and the second light conversion part 130 is disposed on the inner or outer side of the second sub-bubble shell 1111.

[0134] The light emitter 121 can be an LED chip or its array, but is not limited to this. At least one inert gas is filled in the first sub-bubble shell 1110 and the second sub-bubble shell 1111. Light emitted from the light source assembly 120 (or from the light emitter 121) primarily passes through a spacer layer composed of at least one inert gas before reaching the first sub-bubble shell 1110. When the first light conversion unit 122 is disposed inside the first sub-bubble shell 1110, the light emitted from the light emitter 121 first passes through the first light conversion unit 122, and at least a portion of the light is converted; this converted portion of the light is referred to as the first sub-light. The light emitted from the light source 121 first passes through the first light conversion unit 122 and then through the first sub-bulb shell 1110. When the first light conversion unit 120 is located outside the first sub-bulb shell 1110, the light emitted from the light source 121 first passes through the first sub-bulb shell 1110 and then through the first light conversion unit 122. At least a portion of the light emitted from the first light source 121 is converted into the first sub-bulb, and at least a portion of the light emitted from the first light source 121 is not converted into the second sub-bulb. The first sub-bulb is emitted from at least a portion of the area on the second sub-bulb shell 1111 where the second light conversion unit 130 is not located, and at least a portion of the first light emitted from the first light source 121 is emitted from the second sub-bulb shell 1111. The first sub-ray beam exits from the area on the second sub-bubble shell 1111 where the second light conversion section 130 is located. When the second light conversion section 130 is located inside the second sub-bubble shell, the first sub-ray beam passes through the second light conversion section 130 without being converted, and then passes through the second sub-bubble shell 1111 before exiting. When the second light conversion section 130 is located outside the second sub-bubble shell 1111, the first sub-ray beam passes through the second sub-bubble shell first, and then passes through the second light conversion section 130 without being converted, and then exits. The second sub-ray beam exits at least partially from the area on the second sub-bubble shell 1111 where the second light conversion section 130 is not located. The light emitted from the second sub-bulb 1111 is emitted from the area where the second light conversion unit 130 is located. When the second light conversion unit 130 is located inside the second sub-bulb 1111, the second sub-light rays first pass through the second light conversion unit 130, and at least a portion of the second sub-light rays are converted by the second light conversion unit 130 before passing through the second sub-bulb 1111 and emitting. When the second light conversion unit 130 is located outside the second sub-bulb 1111, the second sub-light rays first pass through the second sub-bulb 1111, then pass through the second light conversion unit 130, and at least a portion of the second sub-light rays are converted by the second light conversion unit 130 before emitting. Similarly, the first light conversion unit 122 and the second light conversion unit 130 can be configured to perform light conversion on the light emitted from the light emitter 121, the first sub-light rays, and the second sub-light rays, or not perform light conversion, depending on the requirements.

[0135] In one embodiment, the light emitted from the light emitter 121 is blue light (also referred to as the initial light). A first light conversion layer 130 is disposed on the first sub-bubble shell 1110, and a second light conversion layer 150 is disposed on the second sub-bubble shell 1111. The first light conversion layer 130 converts part of the blue light into green light. The light emitted from the first light conversion layer 130 is called the secondary light. In the spectrum of the initial light, the peak value of the blue light is significantly higher than that of the blue light in the secondary light, and the peak value of the green light in the secondary light is significantly higher than that of the initial light. The peak value of green light in the initial ray; the secondary ray continues to propagate and passes through the second light conversion unit 150 provided in the second sub-bubble 1111. The second light conversion unit 150 converts at least part of the green light in the secondary ray, so that at least part of the green light is converted into red light. The ray emitted from the second light conversion unit 150 is called the secondary ray. In the spectrum of the secondary ray, the peak value of green light is significantly lower than the peak value of green light in the spectrum of the secondary ray, and the peak value of red light is significantly higher than the peak value of red light in the spectrum of the secondary ray.

[0136] In some embodiments, the number of first light conversion units 130 located on the first sub-bubble shell 1110 is multiple, wherein at least some of them can convert blue light into green light;

[0137] In some embodiments, the number of second light conversion units 150 located on the second sub-bubble 1111 is multiple, wherein at least some of them can convert green light into red light;

[0138] In some embodiments, the number of first light conversion units 130 located on the first sub-bubble shell 1110 is plurality of, and the plurality of first light conversion units 130 can convert blue light into light of at least another wavelength. For example, in one embodiment, at least some of the first light conversion units 130 convert blue light into green light, and at least some of the first light conversion units convert blue light into red light;

[0139] In some embodiments, the number of second light conversion units 150 located on the second sub-bubble 1111 is plurality of, and the plurality of second light conversion units 150 can convert light of at least one wavelength. For example, at least some of the plurality of second light conversion units 150 can convert green light into red light, and at least some can convert blue light into green light or red light.

[0140] In one embodiment of this application, a light conversion part is provided on one of the first sub-bubble shell 1110 or the second sub-bubble shell 1111, and the other sub-bubble shell is set to a specific color. The two work together to achieve a special visual effect.

[0141] In another embodiment of this application, the LED lighting device may also be a type of lamp such as a flat lamp, ceiling lamp, groove lamp, straight tube lamp, etc. On the light-emitting surface of such lamps, a light conversion part is provided. When the light emitted from the light source passes through the light conversion part on the light-emitting surface, it is excited and converted into light of other wavelengths (or colors, frequencies).

[0142] Please see Figure 14 The figure shows an exploded view of an LED lighting device according to another embodiment of this application. As shown, the LED lighting device 200 includes a light processing unit (light emitting surface) 201, on which at least one second light conversion part 130 is provided; a base 202, which includes a base plate 2020 and a sidewall 2021 extending in the light emitting direction around the base plate 2020. The sidewall 2021 is connected end to end and forms a groove structure with the base plate 2020. At least one (or multiple) light source components 120 are provided in the groove structure. The light source components 120 are configured to emit light. The light source components 120 include a light emitter 121 and a first light conversion part 122. The first light conversion part 122 covers at least a part of the light emitter 121. The light emitter 121 includes multiple LED chips.

[0143] The light processing unit 201 is mounted on the base 202, completely covering the light source assembly 120. The light emitted by the light source assembly 120 passes through at least part of the second light conversion unit 130 and is converted, thereby achieving a specific visual effect.

[0144] At least one hanging support assembly 203 is provided on the outer side of the base 202, which is used to fix the LED lighting device 200 to the environment. On the outer side of the base 202, or the outer side of the side wall 2021, a power supply assembly 204 is attached. The power supply assembly 204 is provided with various electronic components for conducting external power to the inside of the LED lighting device 200.

[0145] In summary, the technical solution disclosed in the above embodiments of this application has at least the following advantages: When the bulb is turned on, the light-emitting element of the light source assembly emits light, and the light first passes through the first light conversion section of the light source assembly to form a first sub-ray that has been converted in color and a second sub-ray that has not been converted in color. The first and second sub-rays will present one color after passing through the part of the light-transmitting bulb without the second light conversion section, and the first and second sub-rays will present another color after passing through the light-transmitting bulb and the second light conversion section. This allows the bulb to produce more diverse color changes, thereby improving its decorative effect and effectively increasing the commercial value of the bulb.

[0146] Although the present application has disclosed the embodiments as described above, it is not intended to limit the present application. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

[0147] It should be noted that the above-described features of this application can be arranged and combined in any way to improve LED lights, and the above embodiments are described by way of example only. This application is not limited thereto, and many variations are possible without departing from the spirit of this application and the scope defined by the appended claims.

[0148] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An LED lighting device, characterized by, The light source assembly is disposed in the light-transmissive bulb shell, and is spaced apart from the light-transmissive bulb shell, the light source assembly comprises a light emitter and a first light conversion portion covering the light emitter, the light emitter is adapted to emit a light, the first light conversion portion is adapted to allow the light to pass through and convert at least a portion of the light, wherein the converted light is referred to as a first sub-light, and the unconverted light is referred to as a second sub-light. The second light conversion portion is disposed on the surface of the light-transmissive bulb shell and is spaced apart from the first light conversion portion, and the second light conversion portion is adapted to convert the wavelength of the second sub-light. The light emitted from the light source assembly is referred to as initial light, and the light emitted from the second light conversion portion is referred to as secondary light, and the intensity of at least one wavelength of light in the initial light is greater than the intensity of the light of the same wavelength in the secondary light. The intensity of at least one wavelength of light in the secondary light is greater than the intensity of the light of the same wavelength in the initial light.

2. The LED lighting device of claim 1, wherein: The second light conversion portion is disposed on the inner surface or the outer surface of the light-transmissive bulb shell.

3. The LED lighting device of claim 2, wherein: The number of the second light conversion portions is plural, and the second light conversion portions are spaced apart from each other.

4. The LED lighting device of claim 3, wherein: Each of the second light conversion portions has a first surface defining the area of the second light conversion portion, and the light-transmissive bulb shell has a second surface on which the second light conversion portion is disposed, the second surface defining the total surface area of the light-transmissive bulb shell, and the ratio of the sum of the areas of the second light conversion portions to the total surface area of the light-transmissive bulb shell ranges from 0.1% to 95%.

5. The LED lighting device of claim 4, wherein: At least a portion of the first sub-light and the second sub-light passes through the second surface and is emitted, and at least a portion of the first sub-light and the second sub-light passes through the first surface and the second surface and is emitted.

6. The LED lighting device of claim 5, wherein: The second light conversion portion comprises at least one light conversion material and a light-transmissive adhesive material, and the second light conversion portion is coated on the light-transmissive bulb shell.

7. The LED lighting device of claim 6, wherein: The structure of the second light conversion portion is one or a combination of convex lens, concave mirror, and flat mirror.

8. The LED lighting device of claim 7, wherein: The lamp head is connected to the light-transmissive bulb shell, and the lamp head and the light-transmissive bulb shell form a sealed space, and the light source assembly is disposed in the sealed space.

9. The LED lighting device of claim 8, wherein: The core column is connected to the lamp head and is in electrical conduction with the lamp head, the light source assembly is fixed to the core column and is in electrical conduction with the core column, and the light source assembly is in electrical conduction with the lamp head through the core column.

10. The LED lighting device of claim 9, wherein: The light-transmissive bulb shell comprises a first sub-bulb shell on the inside and a second sub-bulb shell on the outside.

11. The LED lighting device of claim 10, wherein: The light source assembly is disposed in the first sub-bulb shell, and the light source assembly comprises a light emitter.

12. An LED lighting device, characterized by The first light conversion portion is disposed in the first sub-bulb shell, and the second light conversion portion is disposed in the second sub-bulb shell. ​ ​ ​ Wherein the light emitted from the light source assembly, when passing through the first light conversion part, at least part of the light is converted in wavelength by the first light conversion part, the light converted in wavelength is called the first sub-light, at least part of the light not converted in wavelength is the second sub-light, at least part of the second sub-light passes through the second light conversion part arranged on the second sub-bubble shell, and is converted in wavelength by the second light conversion part and then emitted.

13. The LED lighting apparatus of claim 12, wherein: The light emitted from the light source assembly is called the initial light, the light emitted after the initial light is converted in wavelength by the second light conversion part is called the secondary light, the initial light at least contains the intensity of light of one wavelength, which is greater than the intensity of light of that wavelength in the secondary light.

14. The LED lighting apparatus of claim 13, wherein: The secondary light contains the intensity of light of one wavelength, which is greater than the intensity of light of that wavelength in the initial light.

15. The LED lighting apparatus of claim 14, wherein: The first sub-bubble shell and the second sub-bubble shell are filled with at least one inert gas.

16. The LED lighting apparatus of claim 15, wherein: The number of the first light conversion part is at least one, and the first light conversion part is arranged on the inside or outside of the first sub-bubble shell.

17. The LED lighting apparatus of claim 16, wherein: The number of the second light conversion part is at least one, and the second light conversion part is arranged on the inside or outside of the second sub-bubble shell.

18. The LED lighting apparatus of claim 17, wherein: The structure of the second light conversion part is one or a combination of convex lens, concave mirror, and flat mirror.

19. The LED lighting apparatus of claim 18, wherein: Further comprising a lamp holder and a core column; the lamp holder is connected with the light-transmitting bubble shell, and the lamp holder and the light-transmitting bubble shell form a sealed space inside the first sub-bubble shell; the core column is connected to the lamp holder and electrically connected with the lamp holder, the light source assembly is fixed to the core column and electrically connected with the core column, and the light source assembly is electrically connected with the lamp holder through the core column.

20. An LED lighting device, characterized by Comprising: A base, the base comprising a bottom plate and a side wall surrounding the bottom plate; The side wall is connected end to end and forms a groove structure with the bottom plate; At least one light source assembly, the light source assembly is arranged in the groove structure, the light source assembly comprises a light emitter and a first light conversion part covering the light emitter; A light processing unit, the light processing unit is covered on the base and completely covers the light source assembly; at least one second light conversion part is arranged on the light processing unit, and at least part of the light emitted by the light source assembly passes through the second light conversion part and is converted in wavelength; At least one hanging support assembly, the hanging support assembly is arranged outside the base; A power supply assembly, the power supply assembly is arranged outside the side wall and is attached to the side wall.

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