CN205592797U - lighting device - Google Patents

Abstract

The utility model provides a lighting device, include: the casing is including bottom plate and lateral wall, the light source subassembly is fixed in on the bottom plate of casing, the photocon, set up in light source subassembly and the one side of holding towards shell opening, the light diffuser plate, the laminating set up in the photocon is kept away from one side of light source subassembly, face ring extends the vertical wall who forms including the anchor ring with along the direction of perpendicular to anchor ring, the anchor ring with the laminating of light diffuser plate sets up, vertical wall with the lateral wall buckle of casing combine to form so that the light source subassembly the photocon and the light diffuser plate forms the confined cavity. Adopt the utility model discloses a lighting device can reach the effect of uniform illumination.

Description

lighting device

technical field

The utility model relates to the lighting field, in particular to a lighting device.

Background technique

Light Emitting Diode (LED for short) light source has been widely concerned and applied due to its advantages of small size, high brightness, low power consumption and long service life. LED downlight is a kind of lighting fixture embedded in the architectural decoration, which can maintain the unity with the architectural decoration when installed. The light source is hidden inside the architectural decoration. The light source is not exposed, no glare, and the visual effect is better. Soft and even.

Since the LED downlight is embedded in the architectural decoration, corresponding openings need to be formed on the architectural decoration, and the size of the openings on the architectural decoration limits the size of the LED downlight. In the prior art, the base and the shell of the LED downlight are connected by screws. When the opening size of the architectural decoration remains unchanged, when the screw connection is used, the corresponding assembly parts will be reserved on the base and the shell, so that The design size of the housing of the LED downlight becomes smaller, resulting in a relatively smaller interior space of the LED downlight, and a corresponding reduction in the arrangement area of the LEDs, which is not conducive to realizing the uniform lighting effect of the LED downlight.

Utility model content

In view of the above problems, the present utility model is proposed in order to provide a lighting device that overcomes the above problems or at least partly solves the above problems.

Based on one aspect of the present utility model, a lighting device is provided, comprising:

a housing, including a bottom plate and side walls;

a light source assembly, fixed on the bottom plate of the housing;

a light guide element, disposed on the side of the light source assembly and facing the opening end of the housing;

A light diffusion plate is attached to the side of the light guide element away from the light source assembly;

The face ring includes a ring surface and an upright wall extending in a direction perpendicular to the ring surface, the ring surface is attached to the light diffusion plate, and the upright wall is snap-fitted with the side wall of the housing to The light source assembly, the light guide element and the light source diffusion plate form a closed cavity.

Optionally, a convex edge is provided on the outer edge of the bottom plate, and the convex height of the convex edge is greater than 1.0mm.

Optionally, the light source assembly includes an LED chip, a driving circuit, and a substrate for integrating the LED chip and the driving circuit, wherein the substrate is fixed on the bottom plate of the housing.

Optionally, when the housing is a circular housing, a plurality of LED chips are only provided in an area close to the edge of the substrate.

Optionally, when the housing is a square housing, multiple rows of LED chips are arranged along the length direction of the substrate, and the multiple rows of LED chips conform to non-aligned distribution along the width direction of the substrate.

Optionally, the light guide element includes one of a lens and a light reflector.

Optionally, the light guide element is fixed to the housing, or the light guide element is fixed to the face ring, or the light guide element is clamped and fixed by the light source assembly and the face ring.

Optionally, the light reflector is an integrated component, including a light reflective bottom plate and an arc-shaped light reflective side wall, or the light reflector includes a first reflector and a second reflector that are assembled with each other.

Optionally, the device further includes: an anti-pull wire buckle, penetrating through the bottom plate and the base plate, and fixed on the bottom plate and/or the base plate.

Optionally, the device further includes: a spring component, symmetrically disposed on the upright wall, for fixing the illuminating device on the installation component.

Optionally, the housing is formed by a metal material.

Optionally, the light reflector is made of high reflectivity polymer material, or

The light reflector is provided with a high-reflectivity sprayed layer on the arc-shaped light-reflecting side wall.

In the lighting device of the present invention, the side wall of the housing and the upright wall of the face ring are snapped together so that the light source assembly, the light guide element and the light diffusion plate form a closed cavity, which plays the role of fixing the light diffusion plate , so that the light source assembly, the light guide element and the light diffusion plate are closely attached together, which improves the stability and airtightness of the lighting device. In addition, the snap-fit method is used to facilitate the assembly or disassembly of the lighting device. Further, the side wall of the housing and the upright wall of the face ring adopt a buckle combination method, which no longer requires the housing and the face ring to reserve a place for assembly, so that the size of the housing is compared with that of the prior art that uses screws to assemble The size of the casing in this way becomes larger, which in turn makes the inner space of the casing larger.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the utility model better It is obvious and easy to understand, and the specific embodiments of the present utility model are enumerated below.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating preferred embodiments, and are not considered to limit the present invention. Also throughout the drawings, the same reference numerals are used to designate the same parts. In the attached picture:

Fig. 1 shows a longitudinal sectional view of a lighting device according to an embodiment of the present invention;

Fig. 2 shows a schematic structural view of a lighting device with a circular appearance according to an embodiment of the present invention;

Fig. 3 shows a schematic structural view of a lighting device with a square appearance according to an embodiment of the present invention;

Fig. 4 shows a schematic diagram of the arrangement of LED chips on a substrate according to an embodiment of the present invention;

Fig. 5 shows another schematic diagram of arrangement of LED chips on a substrate according to an embodiment of the present invention;

Fig. 6a shows a longitudinal sectional view of a lighting device according to an embodiment of the present invention;

Fig. 6b shows another longitudinal sectional view of the lighting device according to an embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

Embodiment one

Fig. 1 shows a longitudinal sectional view of a lighting device according to an embodiment of the present invention. Referring to FIG. 1 , the lighting device includes: a housing 11 , a light source assembly 12 , a light guide element 13 , a light diffusion plate 14 and a face ring 15 , wherein the housing 11 includes a bottom plate 111 and side walls 112 , and the light source assembly 12 is fixed on the bottom plate 111 On the top, the light guide element 13 is arranged on the side of the light source assembly 12 facing the opening end of the housing 11, the light diffusion plate 14 is attached to the side of the light guide element 13 away from the light source assembly 12, and the face ring 15 includes a ring surface 151 and along the The upright wall 152 formed by extending in the direction of the annulus, the annulus 151 is attached to the light diffusion plate 14, and the upright wall 152 is snapped together with the side wall 112 of the housing to make the light source assembly 12, the light guide element 13 and the light diffusion plate 14 form a closed cavity.

In the lighting device of the present invention, the side wall 112 of the housing 11 and the upright wall 152 of the face ring 15 are snapped together so that the light source assembly 12, the light guide element 13 and the light diffusing plate 14 form a closed cavity, which plays an important role. The role of fixing the light diffusion plate 14 is to make the light source assembly 12, the light guide element 13 and the light diffusion plate 14 closely fit together, which improves the stability and airtightness of the lighting device. It is convenient to carry out the assembly or disassembly operation of the lighting device. Further, the side wall 112 of the housing 11 and the upright wall 152 of the face ring 15 are snap-fitted, so that it is no longer necessary for the housing 11 and the face ring 15 to reserve a place for assembly, so that the size of the housing 11 is relatively In the prior art, the size of the shells assembled by screws becomes larger, which further increases the internal space of the shell 11 .

Referring to FIG. 1 , the light source assembly 12 includes an LED chip 121 , a driving circuit (not shown in FIG. 1 ) and a substrate 122 . Wherein, the LED chip 121 and the driving circuit are integrated on the same substrate 122 using surface mount technology (Surface Mounted Technology, referred to as SMT), which can simplify the driving production process. In addition, the LED chip 121 and the driving circuit are integrated on the same substrate 122 , that is, the power integration technology (referred to as DOB), reduces the number of components of the driving circuit, saves space, and enables the lighting device to achieve a thin effect. In the utility model, the LED chip 121 and the driving circuit can also be integrated on the substrate 122 by using plug-in technology, or can be integrated on the substrate 122 by using a combination of surface mount technology and plug-in technology (that is, part of the chip is partially plugged in). connected way). In addition, the LED chip 121 and the driving circuit are integrated on the substrate 122, and the driving circuit and the LED chip 121 may be located on the same surface or on a different surface.

In addition, since the side wall 112 of the housing 11 and the upright wall 152 of the face ring 15 in the present utility model are snap-fitted together, the size of the housing 11 is compared with that of the housing in the prior art that adopts screw assembly. As the size becomes larger, the inner space of the housing 11 becomes larger. As the inner space of the housing 11 becomes larger, the size of the substrate 122 disposed inside the housing 11 also becomes larger, thereby increasing the size of the substrate 122. The arrangement area of the LED chips 121 can achieve the uniform lighting effect of the lighting device.

In the present utility model, in order to facilitate heat dissipation, the housing 11 is made of a metal material. In addition, in a preferred embodiment of the present invention, the outer edge of the bottom plate 111 of the housing 11 is provided with a convex edge, and the convex height of the convex edge is greater than 1.0 mm. In order to facilitate the understanding of the flange design on the bottom plate 111 of the present invention, the present utility model shows the flange structure on the bottom plate of the housing in FIG. 2 and FIG. 3 . Fig. 2 shows a schematic structural view of a lighting device with a circular appearance according to an embodiment of the present invention. Referring to Fig. 2 , a convex edge 211a is provided on the outer edge of the bottom plate 211 of the circular casing 21 of the lighting device. Fig. 3 shows a schematic structural view of a lighting device with a square appearance according to an embodiment of the present invention. Referring to FIG. 3 , a convex edge 311a is provided on the outer edge of the bottom plate 311 of the square housing 31 of the illuminating device.

In the present utility model, the convex edge structure on the bottom plate 111 of the housing 11 shown in FIG. The creepage distance between the chip 121 and the housing 11 makes the LED chip 121 closer to the outer edge of the housing 11, thereby making the arrangement area of the LED chip 121 larger, and the arrangement area of the LED chip 121 becomes larger, thereby increasing The light emitting surface of the light emitted by the LED chip 121 is enlarged, so that the area of the light emitting surface of the light emitted by the LED chip 121 is close to the area of the light diffusion plate 14, so that the light diffused by the light diffusion plate 14 achieves a more uniform lighting effect.

In addition to increasing the arrangement area of the LED chips 121 by setting a convex edge on the outer edge of the bottom plate 111 of the housing 11, thereby improving the uniformity of the lighting device’s light emission, the utility model also adopts an optimized LED chip 121 The way of arrangement and structure of the light guide element 13 further improves the uniformity of light emission of the lighting device.

In the present invention, the arrangement of the LED chips 121 on the substrate 122 is related to the shape of the casing 11 . If the shell is a circular shell, a plurality of LED chips are only arranged in the area near the edge of the substrate; if the shell is a square shell, multiple rows of LED chips are arranged along the length direction of the substrate, and the multiple rows of LED chips Chips follow a non-aligned distribution along the width of the substrate.

Fig. 4 shows a schematic diagram of the arrangement of LED chips on a substrate according to an embodiment of the present invention. Referring to FIG. 4 , two circles of LED chips 42 are arranged near the edge of the substrate 41 , and no LED chips 42 are arranged near the center of the substrate 41 . Fig. 5 shows another schematic diagram of arrangement of LED chips on a substrate according to an embodiment of the present invention. Referring to FIG. 5 , multiple rows of LED chips 52 are distributed along the length direction of the substrate 51 , but the distribution of the multiple rows of LED chips 52 along the width direction of the substrate 51 is non-aligned.

In the present invention, the light guide element 13 can be a lens or a light reflector. Wherein, the light reflector may be an integrated component, or may include a first reflector and a second reflector that are assembled with each other. The light guide element 13 can be fixed in the following manner: the light guide element 13 can pass through the substrate 122 of the light source module 12 and be fixed on the housing 11; or, the light guide element 13 can be fixed on the face ring 15; or, alternatively, the light guide element 13 It can be clamped and fixed by the substrate 122 of the light source module 12 and the face ring 15 .

Referring to Fig. 1 , the light guide element 13 of the present utility model is a light reflector 13a of integrated configuration, comprising a light reflection bottom plate 131 and a light reflection side wall 132, the shape of the light reflection side wall 132 is designed as an arc, and the arc light reflection The side wall can better reflect the light emitted by the LED chip 121 , and the light reflector 13 a is clamped and fixed by the substrate 122 of the light source module 12 and the face ring 15 . In addition, in a preferred embodiment of the present utility model, the light reflector 13a can adopt high-reflectivity polymer material molding parts, or a high reflective reflector is provided on the arc-shaped light reflection side wall 132 of the light reflector 13a. High-efficiency spray coating, so that all the light emitted by the LED chip 121 enters the light diffusion plate 14 through the light reflector 13a, and the light entering the light diffusion plate 14 is diffused to achieve a uniform lighting effect.

The lighting device provided by the utility model achieves a thin effect by integrating the LED chip 121 and the driving circuit on the same substrate 122 . The thin lighting device in the utility model can still realize the first-level electrolytic filtering method, that is, directly filter the high-voltage electricity with an electrolytic capacitor after input rectification to realize low ripple voltage, and then perform a DC-DC converter (a voltage conversion device), in which, the output electrolytic filter is finally performed again, and finally low output ripple and low flicker are achieved.

Embodiment two

Fig. 6a shows a longitudinal sectional view of a lighting device according to an embodiment of the present invention, and Fig. 6b shows another longitudinal sectional view of a lighting device according to an embodiment of the present invention, wherein Fig. 6a and Fig. 6b are based on A longitudinal sectional view obtained by cutting the same lighting device along two directions, and the included angle between the two cutting directions is 90°.

Referring to FIG. 6 a and FIG. 6 b , the lighting device includes: a housing 61 , a light source assembly 62 , a light reflector 63 , a light diffusion plate 64 , a face ring 65 , an anti-pull wire buckle 66 and a spring component 67 . The housing 61 includes a bottom plate 611 and a side wall 612, and the outer edge of the bottom plate 611 is provided with a flange; the light source assembly 62 includes an LED chip 621, a driving circuit (not shown in FIG. 6 ) and a substrate 622, and the substrate 622 is fixed on the bottom plate 611 The light reflector 63 is fixed on the face ring 65, and the light reflector 63 is an integrated component, including a light reflective bottom plate 631 and an arc-shaped light reflective side wall 632; the light diffuser plate 64 is attached to the light reflector 63 The side away from the light source assembly 62; the face ring 65 includes a ring surface 651 and an upright wall 652 extending in a direction perpendicular to the ring surface. The wall 612 is snapped together so that the light source assembly 62, the light reflector 63 and the light diffusion plate 64 form a closed cavity, which plays a role in fixing the light diffusion plate 64, so that the light source assembly 62, the light reflector 63 and the light diffusion plate 64 Tightly fit together; the anti-pull wire buckle 66 runs through the bottom plate 611 and the base plate 622, and the anti-guy wire buckle 66 can be fixed on the bottom plate 611 or on the base plate 622, and can also be fixed on the bottom plate 611 and the base plate 622 at the same time. The new anti-pull wire buckle 66 can prevent the power cord from being damaged due to external force, and can also provide creepage distance and electrical clearance. In addition, it can also play the role of positioning the light source assembly 62 when installing the light source; the spring part 67 is disposed on the upright wall 652 for fixing the lighting device on the mounting part. It should be noted that the snap ring part 67 in the utility model is used to install the lighting device in the corresponding opening of the installation site, for example, the opening of the ceiling. When installing, place the snap ring part 67 on the lighting device vertically , when the illuminating device is put into the corresponding opening, the snap ring part 67 returns to the original state.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (12)

1. A lighting device, characterized in that it comprises: a housing, including a bottom plate and side walls; a light source assembly, fixed on the bottom plate of the housing; a light guide element, disposed on the side of the light source assembly and facing the opening end of the housing; A light diffusion plate is attached to the side of the light guide element away from the light source assembly; The face ring includes a ring surface and an upright wall extending in a direction perpendicular to the ring surface, the ring surface is attached to the light diffusion plate, and the upright wall is snap-fitted with the side wall of the housing to The light source assembly, the light guide element and the light source diffusion plate form a closed cavity. 2. The lighting device according to claim 1, characterized in that, the outer edge of the bottom plate is provided with a convex edge, and the convex height of the convex edge is greater than 1.0mm. 3. The lighting device according to claim 1 or 2, wherein the light source assembly comprises an LED chip, a driving circuit, and a substrate for integrating the LED chip and the driving circuit, wherein the substrate is fixed on the bottom of the housing. 4. The illuminating device according to claim 3, wherein when the housing is a circular housing, a plurality of LED chips are provided only in an area close to the edge of the substrate. 5. The lighting device according to claim 3, wherein when the housing is a square housing, multiple rows of LED chips are arranged along the length direction of the substrate, and the multiple rows of LED chips are arranged along the length direction of the substrate. The width direction of the substrate conforms to the non-aligned distribution. 6. The lighting device according to claim 1 or 2, wherein the light guiding element comprises one of a lens and a light reflector. 7. The lighting device according to claim 6, characterized in that, the light guiding element is fixed to the housing, or, the light guiding element is secured to the face ring, or, The light guide element is clamped and fixed by the light source assembly and the face ring. 8. The lighting device according to claim 6, characterized in that, The light reflector is an integrated component, including a light reflective bottom plate and an arc-shaped light reflective side wall, or The light reflector includes a first reflector and a second reflector assembled with each other. 9. The lighting device according to claim 3, further comprising: The anti-pull wire buckle penetrates through the base plate and the base plate, and is fixed on the base plate and/or the base plate. 10. The lighting device according to claim 1 or 9, characterized in that the device further comprises: The spring part is symmetrically arranged on the upright wall, and is used for fixing the lighting device on the installation part. 11. The illuminating device according to claim 1 or 2, characterized in that, the housing is formed by a metal material. 12. The lighting device according to claim 8, characterized in that, The light reflector is made of a high-reflectivity polymer material, or The light reflector is provided with a high-reflectivity sprayed layer on the arc-shaped light-reflecting side wall.