High-luminous-efficiency and low-cost courtyard lamp

Abstract

The utility model discloses a courtyard lamp with high luminous efficiency and low cost, which relates to the technical field of courtyard lamp structures, and comprises an upper shell and a lower shell arranged at the bottom of the upper shell, a lamp panel is arranged in the upper shell, lamp beads are arranged on the surface of the lamp panel, a lens is arranged in the lower shell, and the lamp beads are arranged in an annular array. The size of the annular array formed by the multiple sets of lamp beads is gradually reduced and contracted inwards, the surface of the lens is in a circular tube shape, the multiple sets of circular tubes are arranged, the diameters of the circular tubes are sequentially decreased from outside to inside, and the lamp beads are located in the circular tubes. According to the courtyard lamp with the high lighting effect and the low cost, the interior of the lens is arranged to be in the circular tube shape, the lamp beads arranged at equal intervals are completely wrapped, the overall lighting effect can be more uniform, meanwhile, light rays can be more concentrated, and therefore the lighting effect of the lamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceiling lamp structures, in particular to a ceiling lamp with high light efficiency and low cost. Background Art

[0002] A ceiling light is a common indoor lighting device that can be installed on the ceiling to provide indoor lighting and decoration. It is usually composed of a housing, a light source, a lens, and other parts.

[0003] At present, most traditional lenses are spherical in shape. Since the curvature radius of the center and edge of the spherical lens is different, the light will appear at different refraction angles on the spherical lens. Each refraction angle will cause the light to be focused on a different focal point, resulting in chromatic aberration. Chromatic aberration will blur the focus, so that the lens cannot achieve the focusing effect, causing the light to be scattered and reflected when passing through the lens, resulting in light path loss and light energy loss, affecting the light transmission efficiency and irradiation power, and thus affecting the lighting effect. Utility Model Content

[0004] In view of the problem that the existing spherical lens will produce chromatic aberration and fail to achieve focusing effect, thus affecting the light effect, the present utility model is proposed.

[0005] Therefore, the utility model aims to provide a high-light-efficiency and low-cost ceiling light, and its purpose is to solve the problem that a spherical lens will produce chromatic aberration and fail to achieve a focusing effect, thereby affecting the light effect.

[0006] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a high-light-efficiency and low-cost ceiling lamp, comprising an upper shell body and a lower shell body installed at the bottom of the upper shell body, a lamp board is installed inside the upper shell body, the surface of the lamp board is provided with a high-reflectivity white oil coating, lamp beads are installed on the surface of the lamp board, and a lens is installed inside the lower shell body, the lamp beads are arranged in a circular array, and the size of the circular array composed of multiple groups of the lamp beads gradually decreases and shrinks inward, the surface of the lens is in the shape of a circular tube, the circular tube is provided with multiple groups, and the diameters thereof decrease successively from the outside to the inside, and the lamp beads are located inside the circular tube.

[0007] As a preferred solution of the high-light-efficiency and low-cost ceiling lamp of the utility model, an inner ring is installed on the surface of the lamp panel and at one end away from the upper shell, and the other end of the inner ring is located at one end of the lower shell and is movably connected thereto.

[0008] As a preferred solution of the high-light-efficiency and low-cost ceiling lamp described in the utility model, a connecting block is installed on the surface of the lens, the connecting block is arranged in an arc shape, a through hole is opened on the surface of the lamp panel, a connecting sleeve is installed on the surface of the upper shell, and the connecting block, the through hole and the connecting sleeve are communicated with each other.

[0009] As a preferred solution of the high-light-efficiency and low-cost ceiling lamp of the utility model, a threaded hole is provided on the top of the upper shell.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model, by setting the inside of the lens into a circular tube shape and completely wrapping the equally spaced lamp beads, can make the overall lighting effect more uniform, improve the utilization rate of the lamp bead luminous flux, greatly improve the lighting effect, and also make the light more concentrated, while ensuring the uniformity of illumination and color of the light spot. The high reflectivity white oil coating can improve the lighting effect by 3%-5%.

[0012] 2. The utility model matches the voltage of the power supply by changing the series and parallel numbers of the lamp panels to maximize the conversion efficiency of the power supply. This method can improve the conversion efficiency of the power supply without increasing the cost of the power supply. Moreover, by using multiple sets of low-cost lamp beads, the cost of the lamp beads is not greatly increased, and the lighting effect of the whole lamp can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a high-light-efficiency and low-cost ceiling lamp.

[0015] Figure 2 This is a diagram showing the overall structure of the high-light-efficiency and low-cost ceiling lamp of the utility model.

[0016] Figure 3 This is a diagram showing the structure of the upper shell and lower shell of the high-light-efficiency and low-cost ceiling lamp of the utility model.

[0017] Figure 4 The top structure diagram of the upper shell of the utility model is a high-light-efficiency and low-cost ceiling lamp.

[0018] Figure 5 This is a cross-sectional view of the overall structure of the high-light-efficiency and low-cost ceiling lamp of the utility model.

[0019] Description of reference numerals:

[0020] 1. Upper shell; 2. Lower shell; 3. Lens; 31. Circular tube; 4. Lamp board; 5. Lamp bead; 6. Inner ring; 7. Connecting block; 8. Through hole; 9. Connecting sleeve; 10. Threaded hole. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] Reference Figure 1-5 , which is the first embodiment of the utility model, provides a high-light-efficiency and low-cost ceiling lamp, which includes an upper shell 1, a lower shell 2 installed at the bottom of the upper shell 1, a lamp board 4 is installed inside the upper shell 1, a lamp bead 5 is installed on the surface of the lamp board 4, a lens 3 is installed inside the lower shell 2, and a high-reflectivity white oil coating is provided on the lamp board 4, which can improve the light efficiency by 3%-5% without increasing the cost too much;

[0024] The lamp beads 5 are arranged in a circular array, and the size of the circular array composed of multiple groups of lamp beads 5 gradually decreases and shrinks inward. The circular array composed of multiple groups of lamp beads 5, that is, the circular shape, decreases successively, but the diameter of the lamp beads 5 remains unchanged. The circular ring composed of the outermost lamp beads 5 has the largest diameter, and the circular ring composed of the innermost lamp beads 5 has the smallest diameter. The surface of the lens 3 is in a circular tubular shape 31. The circular tubular shape 31 is provided with multiple groups, and its diameter decreases successively from the outside to the inside. The lamp beads 5 are located inside the circular tubular shape 31. The lens 3 of the circular tubular shape 31 can control the scattering range of light, so that the light is more focused on a small range, thereby achieving a focusing effect. Wrapping the lamp beads 5 inside the lens 3 of the circular tubular shape 31 can make the light more concentrated and focused, thereby improving the illumination and enhancing the lighting effect, and can reduce the reflection of light in the air and other surfaces, thereby reducing the glare and excess light, thereby improving the light efficiency of the lamp beads 5.

[0025] An inner ring 6 is installed on the surface of the lamp board 4 and at one end away from the upper shell 1. The other end of the inner ring 6 is located at one end of the lower shell 2 and is movably connected to it. The inner ring 6 is fixedly connected to the upper shell 1 and movably connected to the lower shell 2. When installing the upper shell 1 and the lower shell 2, the positioning of the lower shell 2 can be facilitated.

[0026] A connecting block 7 is installed on the surface of the lens 3, and the connecting block 7 is arranged in an arc shape. A through hole 8 is opened on the surface of the lamp panel 4, and a connecting sleeve 9 is installed on the surface of the upper shell 1. The connecting block 7, the through hole 8 and the connecting sleeve 9 are connected, and the three can be connected by bolts, clamps, etc. The through hole 8 is located on the inner side of the multiple groups of lamp beads 5.

[0027] A threaded hole 10 is provided on the top of the upper housing 1 for connection with the ceiling, so as to facilitate the installation of the ceiling light.

[0028] During use, the ceiling lamp can be installed on the ceiling through the threaded hole 10. This ceiling lamp is formed by forming a plurality of groups of circular rings by forming a plurality of groups of lamp beads 5 into a circular array, and the sizes of the plurality of circular rings gradually decrease and shrink inward, but the diameter of the lamp beads 5 remains unchanged, the diameter of the circular ring formed by the outermost lamp beads 5 is the largest, and the diameter of the circular ring formed by the innermost lamp beads 5 is the smallest. The arrangement of the plurality of lamp beads 5 can evenly scatter the light and generate a circular light spot in the space, thereby achieving a uniform lighting effect. The arrangement of the plurality of circular ring-shaped lamp beads 5 can make the light reflect and refract multiple times in the circular array, so that the light is focused on the same point, thereby improving the brightness and irradiation distance of the lamp. By selecting low-cost lamp beads 5, increasing the number of lamp beads 5, and reducing the current used by a single lamp bead 5 to increase the light effect of a single lamp bead 5, the purpose of improving the light effect of the entire lamp is achieved.

[0029] And by forming annular lamp beads 5 of different sizes, multiple groups of lamp beads 5 can be connected in series to achieve the effect of change and series connection. When the brightness of the annular shape formed by the outer lamp beads 5 is larger, and the brightness of the annular shape formed by the inner lamp beads 5 is smaller, the lamp can be made to present a sense of hierarchy and dynamic effects through differentiated brightness settings (annular lamp beads 5 of different sizes can be composed of modular LED light sources of different specifications, so the effect of changing the lamp beads 5 in parallel and in series can be achieved). By changing the number of series and parallel of the lamp board 4 to match the voltage of the power supply, the conversion efficiency of the power supply can be maximized without significantly increasing the power supply cost, thereby achieving the purpose of cost saving;

[0030] By setting the surface of the lens 3 to a circular tube shape 31 and completely wrapping the equally spaced lamp beads 5, the overall lighting effect can be made more uniform, and the light can be more concentrated, thereby improving the lighting efficiency of the lamp. The light can be reflected on the surface of the lens 3, increasing the scattering and light transmittance of the lens 3, thereby improving the transmittance and achieving a uniform light transmission effect, thereby ensuring that the luminous flux of the lamp beads is fully utilized and achieving maximum emission through the lens 3.

[0031] The influence of power conversion efficiency on light efficiency

[0032] The higher the conversion efficiency of the power supply, the higher the power reaching the light board 4, and the higher the luminous flux emitted by the LED on the light board 4. Under the same power supply power, the higher the conversion efficiency of the lamp, the higher the luminous efficiency. The efficiency of the power supply for ceiling lights in the industry is around 90%, a few products can reach 93%, and very few can reach 95%-96%.

[0033] The influence of light board 4 reflectivity on light efficiency

[0034] Part of the light emitted by the LED is emitted outside the lamp through the lens, and part of the light will be reflected back to the lamp board 4 by the lens, and the lamp board 4 will then reflect to the lens. If the reflectivity of the lamp board 4 is low, this part of the light cannot be reflected back to the lens, resulting in waste. Through actual measurement, the high-reflectivity white oil lamp board 4 has 3%-5% improvement space for improving the lighting efficiency compared to the lamp board with ordinary reflectivity.

[0035] The influence of lamp bead selection on light effect

[0036] LED lamp beads with the same power level will have different luminous fluxes due to the different lamp boards used. For example, a 2835 lamp bead with three strings of 1633 emits a luminous flux of 150 lumens when driven by a current of 100mA, and a 2835 lamp bead with three strings of 2640 lamp boards emits a luminous flux of 170 lumens when driven by a current of 100mA. Therefore, the level of the lamp bead will have a great influence on the overall lighting effect. In addition, the current used by the lamp bead will affect the lighting effect. The lower the current, the greater the lighting effect. This can be clearly seen from the volt-ampere characteristic curve of the LED lamp bead.

[0037] The influence of lens design on light efficiency

[0038] Lens design is the key to the optical design of lamps. The light output angles of ceiling lamps are mostly 60° and 90°. When designing annular lenses, it is best for the optical surface to utilize all the light emitted by the lamp beads. However, this will cause the optical surface of the annular lens to be larger. Under the limited lamp size, the fewer the annular surfaces are (the more annular surfaces, the more circles of LED lamp beads can be placed, the less power a single lamp bead uses, and the higher the luminous efficiency), the lower the luminous efficiency of the lamp beads.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-light-efficiency, low-cost ceiling light, comprising an upper housing (1) and a lower housing (2) mounted at the bottom of the upper housing (1), characterized in that: A lamp board (4) is installed inside the upper shell (1), a surface of the lamp board (4) is provided with a white oil coating with high reflectivity, a lamp bead (5) is installed on the surface of the lamp board (4), and a lens (3) is installed inside the lower shell (2); The lamp beads (5) are arranged in a circular array, and the size of the circular array formed by multiple groups of the lamp beads (5) gradually decreases and shrinks inwardly. The surface of the lens (3) is in a circular tube shape (31). The circular tube shape (31) is provided with multiple groups, and the diameters thereof decrease from the outside to the inside. The lamp beads (5) are located inside the circular tube shape (31).

2. The high light efficiency and low cost ceiling light according to claim 1, characterized in that: An inner ring (6) is installed on the surface of the lamp panel (4) and at one end away from the upper shell (1); the other end of the inner ring (6) is located at one end of the lower shell (2) and is movably connected thereto.

3. The high light efficiency and low cost ceiling lamp according to claim 2, characterized in that: A connection block (7) is installed on the surface of the lens (3), and the connection block (7) is arranged in an arc shape. A through hole (8) is opened on the surface of the lamp panel (4), and a connection sleeve (9) is installed on the surface of the upper shell (1). The connection block (7), the through hole (8) and the connection sleeve (9) are in communication with each other.

4. The high light efficiency and low cost ceiling lamp according to claim 3 is characterized in that: A threaded hole (10) is provided on the top of the upper shell (1).

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