Light bar structure of panel light

Abstract

The utility model discloses a light bar structure of a panel light, which realizes soft and uniform light emitted by a lamp. The light bar structure of the panel light comprises a light shell and a plurality of light bars arranged in the light shell in parallel. The lamp strip comprises a lamp strip, N + 1 first lamp beads with the same color temperature and N second lamp beads with the same color temperature, wherein the N + 1 first lamp beads and the N second lamp beads are installed on the lamp strip, and the color temperature of the first lamp beads is higher than that of the second lamp beads. The first lamp beads and the second lamp beads are sequentially arranged in the length direction of the lamp strip, the distance between every two adjacent first lamp beads is D1, the distance between every two adjacent second lamp beads is D2, and D1 is smaller than D2; the direction close to the middle position of the lamp strip is defined as the inner side, the first lamp bead and the (N + 1) th lamp bead are located on the outer sides of the first second lamp bead and the Nth second lamp bead respectively, the first lamp bead is tightly attached to the first second lamp bead, and the (N + 1) th lamp bead is tightly attached to the Nth second lamp bead.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamps, in particular to a light bar structure of a flat lamp. Background Art

[0002] Most of the existing LED lamps can only adjust brightness. The few LED lamps that can adjust color temperature use multiple color temperature levels for adjustment, that is, they can only be adjusted to a specific color temperature level, and cannot perform linear adjustment of brightness and color temperature. The use comfort is not high, the application scenarios are limited, and they cannot meet the user's needs for flexible adjustment of color temperature.

[0003] See also Figure 1 , discloses an LED brightness color temperature linear dimming circuit, which includes a DC dimmer A and at least one LED light source B; the output power of the DC dimmer A can be linearly adjusted; the LED light source B includes a high color temperature light-emitting unit B1 and a low color temperature light-emitting unit B2 arranged in parallel, wherein the high color temperature light-emitting unit B1 includes a plurality of high color temperature LED lamp beads B11 connected in series, and the positive and negative electrodes of the high color temperature light-emitting unit B1 are respectively connected to the positive and negative electrodes of the DC dimmer A; the low color temperature light-emitting unit B2 includes an adjustment module B22 and a plurality of low color temperature LED lamp beads B11 connected in series. 21, the positive and negative electrodes of the low color temperature light-emitting unit B2 are respectively connected to the positive and negative electrodes of the DC dimmer A, the color temperature of the low color temperature LED lamp bead B21 is lower than the color temperature of the high color temperature LED lamp bead B11, and the adjustment module B22 has at least one linear resistance element B221; the total rated power of all the low color temperature LED lamp beads B21 of the low color temperature light-emitting unit B2 of each LED light source B is lower than the total rated power of all the high color temperature LED lamp beads B11 of the high color temperature light-emitting unit B1 of the LED light source B, so as to ensure that the adjustment module B22 can consume the excess power.

[0004] The working principle of the above dimming circuit is:

[0005] (1) When the output current of DC dimmer A is the maximum, the brightness and color temperature of LED light source B are the maximum, and the operating currents of high color temperature light-emitting unit B1 and low color temperature light-emitting unit B2 of LED light source B are the same;

[0006] (2) When the output current of the DC dimmer A is gradually reduced, the operating currents of the high color temperature light-emitting unit B1 and the low color temperature light-emitting unit B2 of the LED light source B both decrease, causing the voltage of the linear resistor element B221 of the adjustment module B22 of the low color temperature light-emitting unit B2 to decrease, thereby making the total voltage of all low color temperature LED lamp beads B21 of the low color temperature light-emitting unit B2 lower than the total voltage of all high color temperature LED lamp beads B11 of the high color temperature light-emitting unit B1 (i.e., the total voltage of the high color temperature light-emitting unit B1), thus causing the operating current of the low color temperature light-emitting unit B2 to be greater than the operating current of the high color temperature light-emitting unit B1, thereby making the brightness of the low color temperature light-emitting unit B2 greater than the brightness of the high color temperature light-emitting unit B1, thereby causing the overall brightness and color temperature of the LED light source B to decrease;

[0007] (3) Contrary to (2), when the output current of the DC dimmer A is gradually increased, the overall brightness and color temperature of the LED light source B will increase.

[0008] As described above, since the voltage of the linear resistor element B221 contained in the low color temperature light-emitting unit B2 changes linearly with the current, when the output current of the DC dimmer A changes linearly, the overall brightness and color temperature of the LED light source B can change linearly, thereby realizing linear adjustment of the brightness and color temperature of the LED lamp.

[0009] At present, large-area flat panel lights generally contain multiple LED light strips. When using LED lamp beads with different color temperatures, it is necessary to consider the arrangement of the lamp beads to ensure that the final light output effect of the flat panel light is uniform and soft, without too bright or too dark areas. Utility Model Content

[0010] The utility model aims to provide a light bar structure of a flat lamp, so as to solve the problems existing in the prior art and realize soft and uniform light output of the lamp.

[0011] In order to achieve the above purpose, the solution of the utility model is:

[0012] A light bar structure of a flat lamp comprises a lamp housing, and a plurality of light bars arranged in parallel in the lamp housing; the light bar comprises a light strip, and N+1 first lamp beads with the same color temperature, and N second lamp beads with the same color temperature installed on the light strip, and the color temperature of the first lamp beads is higher than the color temperature of the second lamp beads; the first lamp beads and the second lamp beads are arranged in sequence along the length direction of the light strip, the spacing between adjacent first lamp beads is D1, the spacing between adjacent second lamp beads is D2, and D1<D2; the direction close to the middle position of the light strip is defined as the inside, the 1st and N+1th first lamp beads are respectively located on the outside of the 1st and Nth second lamp beads, and the 1st first lamp bead is closely attached to the 1st second lamp bead, and the N+1th first lamp bead is closely attached to the Nth second lamp bead.

[0013] The spacing D1 of the first lamp beads is set to 50-90 mm, and the spacing D2 of the second lamp beads is set to 50-90 mm.

[0014] The lamp housing is provided with an installation cavity for the light bar to cooperate with, the light bar is cooperated with the bottom of the installation cavity, and at least a side wall of the installation cavity is affixed with a reflective sheet.

[0015] Preferably, a positioning groove for embedding the light bar is provided at the bottom of the installation cavity.

[0016] In the lamp housing, a distance D3 between adjacent light bars is set to be less than or equal to D2.

[0017] After adopting the above technical solution, the utility model has the following technical effects:

[0018] In the lamp strip of the present invention, since the spacing between the first lamp beads with the same color temperature is equal, and the spacing between the second lamp beads with the same color temperature is equal, the first lamp beads of the same lamp strip are connected in series in sequence and then connected to the DC dimmer of the LED lamp, and at the same time, the second lamp beads of the same lamp strip are connected in series in sequence and then connected in series with the linear resistance element and connected to the DC dimmer, the DC dimmer can be used to linearly adjust the brightness and color temperature of the LED lamp and ensure a uniform lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the LED brightness and color temperature linear dimming circuit diagram;

[0020] Figure 2 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0021] Figure 3 It is a front view of a specific embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the arrangement of lamp beads in a specific embodiment of the utility model;

[0023] Description of Figure Numbers:

[0024] 1-lamp housing; 11-installation cavity; 111-positioning groove; 12-reflective sheet;

[0025] 2-light bar; 21-light belt; 22-first lamp bead; 23-second lamp bead;

[0026] A-DC dimmer; B-LED light source; B1-high color temperature light emitting unit; B11-high color temperature LED lamp bead; B2-low color temperature light emitting unit; B21-low color temperature LED lamp bead; B22-regulation module; B221-linear resistance element. DETAILED DESCRIPTION

[0027] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0028] refer to Figures 2 to 4 As shown, the utility model discloses a light bar structure of a flat lamp, comprising a lamp housing 1, and a plurality of light bars 2 arranged in parallel in the lamp housing 1;

[0029] The light strip 2 includes a light strip 21, and N+1 first lamp beads 22 with the same color temperature and N second lamp beads 23 with the same color temperature installed on the light strip 21, and the color temperature of the first lamp beads 22 is higher than the color temperature of the second lamp beads 23;

[0030] The first lamp beads 22 and the second lamp beads 23 are arranged in sequence along the length direction of the light strip 21 , the distance between adjacent first lamp beads 22 is D1 , the distance between adjacent second lamp beads 23 is D2 , and D1 < D2;

[0031] The direction close to the middle position of the light strip 21 is defined as the inner side, and the 1st and N+1th first lamp beads 22 are respectively located on the outside of the 1st and Nth second lamp beads 23, and the 1st first lamp bead 22 is close to the 1st second lamp bead 23, and the N+1th first lamp bead 22 is close to the Nth second lamp bead 23.

[0032] Through the above scheme, in the lamp strip 21 of the utility model, since the spacing between the first lamp beads 22 with the same color temperature is equal, and the spacing between the second lamp beads 23 with the same color temperature is equal, the first lamp beads 22 of the same lamp strip 21 are connected in series in sequence and connected to the DC dimmer of the LED lamp, and at the same time, the second lamp beads 23 of the same lamp strip 21 are connected in series in sequence and then connected in series with the linear resistance element and connected to the DC dimmer, the DC dimmer can be used to linearly adjust the brightness and color temperature of the LED lamp, and can ensure a uniform lighting effect.

[0033] Specific embodiments of the present utility model are shown below.

[0034] The spacing D1 of the first lamp beads 22 is set to 50-90 mm, and the spacing D2 of the second lamp beads 22 is set to 50-90 mm.

[0035] The lamp housing 1 is provided with a mounting cavity 11 for the light bar 2 to cooperate with. The light bar 2 is matched at the bottom of the mounting cavity 11, and at least the side wall of the mounting cavity 11 is affixed with a reflective sheet 12 to reflect the outermost lamp beads.

[0036] Furthermore, a positioning groove 111 for embedding the light bar 2 is provided at the bottom of the installation cavity 11 to ensure that the light bar 2 is installed in place.

[0037] In the lamp housing 1 , the distance D3 between adjacent light bars 2 is set to be less than or equal to D2 .

[0038] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A light bar structure of a flat panel light, characterized in that: It comprises a lamp housing, and a plurality of lamp strips arranged in parallel in the lamp housing; The light bar comprises a light strip, and N+1 first lamp beads with the same color temperature, and N second lamp beads with the same color temperature installed on the light strip, and the color temperature of the first lamp beads is higher than the color temperature of the second lamp beads; The first lamp beads and the second lamp beads are arranged in sequence along the length direction of the light strip, the distance between adjacent first lamp beads is D1, the distance between adjacent second lamp beads is D2, and D1<D2; The direction close to the middle position of the light strip is defined as the inner side, the 1st and N+1th first lamp beads are respectively located outside the 1st and Nth second lamp beads, and the 1st first lamp bead is close to the 1st second lamp bead, and the N+1th first lamp bead is close to the Nth second lamp bead.

2. The light bar structure of the flat panel light according to claim 1, characterized in that: The spacing D1 of the first lamp beads is set to 50-90 mm, and the spacing D2 of the second lamp beads is set to 50-90 mm.

3. The light bar structure of the flat panel light according to claim 1, characterized in that: The lamp housing is provided with an installation cavity for the light bar to cooperate with, the light bar is cooperated with the bottom of the installation cavity, and at least a side wall of the installation cavity is affixed with a reflective sheet.

4. The light bar structure of the flat panel light as claimed in claim 3, characterized in that: The bottom of the installation cavity is provided with a positioning groove for embedding the light bar.

5. The light bar structure of the flat panel light according to claim 1, characterized in that: In the lamp housing, a distance D3 between adjacent light bars is set to be less than or equal to D2.

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