Light cavity type emergency evacuation marker lamp without light guide plate and application method of light cavity type emergency evacuation marker lamp

Abstract

The invention relates to a light-guide-plate-free light cavity type emergency evacuation marker lamp and an application method thereof.The light-guide-plate-free light cavity type emergency evacuation marker lamp comprises a front shell assembly, a rear shell assembly and an optical support, a mounting cavity is formed between the opposite side surfaces of the front shell assembly and the rear shell assembly, the optical support is located in the mounting cavity, and a light source mounting area and a frame-shaped light cavity are formed in the optical support; the light source installation area and the light cavity are separated through a partition plate, and an open groove is formed in the partition plate and communicated with the light source installation area and the light cavity. A light source is arranged in the light source installation area, and light emitted by the light source enters the light cavity through the open groove. A light blocking part is arranged on the inner wall or the edge of the open groove, and a reflecting surface is arranged on the side wall, right opposite to the open groove, of the light cavity; the light cavity mode without the light guide plate is a brand new mode, the problems that the light intensity at the low beam position is too high and the light intensity at the high beam position is too low can be well solved, the structural design is extremely simple, cost is low, and the new mode has very wide development and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency evacuation sign lamps, and more particularly to an optical cavity type emergency evacuation sign lamp without a light guide plate and an application method thereof. Background Art

[0002] Emergency evacuation sign lights are suitable for fire emergency lighting and are the most common lighting tools in fire emergency. Fire evacuation indicator lights are usually made of industrial plastics and high-brightness bulbs. The color is mainly white, with two arrows on the surface. The material does not age, has fast heat dissipation, and is impact-resistant. Fire evacuation indicator lights have wall-mounted, portable, and hanging installation methods;

[0003] At present, in order to improve the uniformity of the light source in the emergency evacuation sign light, a light guide plate is often configured to form a backlight by relying on the light guide plate to provide light source for the signs (groove shape) on one side or both sides. However, there is a defect in the light source structure of this light guide plate structure: the area near the light source position will be obviously too bright, while the area far away from the light source position will be obviously insufficient in brightness. This is a drawback of the mode of using light guide plates. Even if a light guide plate with better uniform light effect is used, this defect can only be reduced but not eliminated. Therefore, there is an urgent need for a new mode of optical cavity emergency evacuation sign light without a light guide plate and an application method thereof that can break through the existing light guide plate mode. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an optical cavity type emergency evacuation sign light without a light guide plate in view of the above-mentioned defects of the prior art, and also provide an application method of the optical cavity type emergency evacuation sign light without a light guide plate.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A light-guiding plate-free optical cavity type emergency evacuation sign light is constructed, comprising a front shell component, a rear shell component and an optical bracket, wherein an installation chamber is arranged between opposite side surfaces of the front shell component and the rear shell component, and the optical bracket is located in the installation chamber, wherein a light source installation area and a frame-shaped optical cavity are formed on the optical bracket; the light source installation area and the optical cavity are separated by a partition, and a slot is arranged on the partition, and the slot connects the light source installation area and the optical cavity; a light source is arranged in the light source installation area, and light emitted by the light source enters the optical cavity via the slot; a light-blocking portion is arranged at the inner wall of the slot or at the edge of the slot, and the light-blocking portion is used to block light entering the optical cavity to prevent light from directly hitting the low-beam side wall of the optical cavity close to the slot; a reflecting surface is arranged on the side wall of the optical cavity opposite to the slot, and the reflecting surface is used to reflect light entering the optical cavity to supplement the light intensity of the high-beam side wall of the optical cavity far from the slot.

[0007] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention, wherein a frame is arranged on the optical bracket, and two side-by-side dividing strips are arranged in the frame, and the two dividing strips divide the internal space of the frame into three optical cavities; one side edge of the frame is the partition and is formed with a plurality of the slots, and a single optical cavity is correspondingly connected to one or more of the slots.

[0008] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention is characterized in that the partition bar is provided with an extension portion extending into the light source installation area, and a plurality of the extension portions form a support frame for supporting the light source installation area.

[0009] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention is provided with a circuit board in the light source installation area, a plurality of the light sources and status indicator lights are provided on the circuit board, and an annular anti-light-crossing enclosure is provided on the extension portion adjacent to the status indicator light.

[0010] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention, wherein a wire pressing plate is also provided on the side of the frame body provided with the slot, and a wire pressing groove is provided on the wire pressing plate to press the connecting wires of the circuit board onto the front shell component or the rear shell component.

[0011] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention is characterized in that the dividing strip and the extension portion are integrally formed, the partition is movably inserted into the movable strip formed by the dividing strip and the extension portion, the partition and both side edges of the frame are slidably arranged, and the frame is provided with a first adjustment unit for adjusting the position of the partition; the light blocking portion is a light blocking sheet arranged on the inner wall of the groove and can be longitudinally damped and rotated to adjust the angle.

[0012] The optical cavity type emergency evacuation sign light without a light guide plate of the present invention, wherein the front shell component or the rear shell component is provided with a second adjustment unit for adjusting the distance between the frame and the light source.

[0013] In the optical cavity type emergency evacuation sign light without a light guide plate described in the present invention, the circuit board is located above the optical cavity.

[0014] The optical cavity type emergency evacuation sign light without a light guide plate of the present invention, wherein the front shell component and the rear shell component both include a shell, the edge of the shell is formed with a frame, and the frame of the front shell component and the frame of the rear shell component are combined to form the installation chamber;

[0015] The two shells are both provided with a guide mark and a diffusion plate matched with the guide mark, or only one of the two shells is provided with a guide mark and a diffusion plate.

[0016] A method for applying an optical cavity type emergency evacuation sign light without a light guide plate, using the optical cavity type emergency evacuation sign light without a light guide plate as described above, wherein the method comprises the steps of:

[0017] The distance between the frame and the light source is adjusted by the second adjustment unit, and during the adjustment process, the light intensity at the far-beam side wall of the optical cavity far from the groove is measured until the measurement result meets the light intensity range required by the far-beam side wall of the optical cavity far from the groove;

[0018] The first adjustment unit is used to adjust the distance between the partition and the light source, and during the adjustment process, the light intensity at the side wall of the middle part of the optical cavity is measured until the measurement result meets the required light intensity range at the side wall of the middle part of the optical cavity;

[0019] The angle of the light shield is adjusted, and during the adjustment process, the light intensity at the low beam side wall of the optical cavity close to the slot is measured until the measurement result meets the required light intensity range of the low beam side wall of the optical cavity close to the slot.

[0020] The beneficial effect of the present invention is that: by applying the light guide plate-free optical cavity mode of the present application, during operation, the middle and lower parts of the inner wall of the optical cavity (at the high beam) mainly rely on direct light from the light source to obtain light, and the upper part of the inner wall of the optical cavity (at the low beam) relies on diffusely reflected light in the optical cavity to obtain light, and at the same time, the lower part of the inner wall of the optical cavity (at the high beam) also relies on reflection from the reflecting surface for supplementary light. Through this structural layout design, a new mode is formed, which can better avoid the problems of excessive light intensity at the low beam and too weak light intensity at the high beam, and the structural design is extremely simple and low-cost. This new mode has a very broad development and application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0022] Figure 1 This is a schematic diagram of the structure of an optical cavity type emergency evacuation sign light without a light guide plate according to the first embodiment (the edge of the front shell component is partially hidden);

[0023] Figure 2 yes Figure 1 A cross-sectional view of

[0024] Figure 3 It is a schematic diagram of the exploded structure of the optical cavity type emergency evacuation sign light without a light guide plate of the first embodiment;

[0025] Figure 4 This is a schematic diagram of the optical support structure of the optical cavity type emergency evacuation sign light without a light guide plate in the first embodiment;

[0026] Figure 5 This is a schematic diagram of the structure of the optical cavity type emergency evacuation sign light without a light guide plate of the second embodiment.

[0027] Figure 6 It is a schematic diagram of the light shielding plate arrangement of the optical cavity type emergency evacuation sign light without a light guide plate of the second embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0029] Embodiment 1

[0030] The optical cavity type emergency evacuation sign light without a light guide plate in a preferred embodiment of the present invention is as follows: Figure 1 See also Figure 2-Figure 4, comprising a front shell component 1, a rear shell component 2 and an optical bracket 3, a mounting chamber 4 is arranged between the surfaces of the opposite sides of the front shell component 1 and the rear shell component 2, the optical bracket 3 is located in the mounting chamber 4, a light source mounting area 30 and a frame-shaped optical cavity 31 are formed on the optical bracket 3; the light source mounting area 30 and the optical cavity 31 are separated by a partition 32, a groove 320 is arranged on the partition 32, and the groove 320 connects the light source mounting area 30 and the optical cavity 31; a light source 5 is arranged in the light source mounting area 30, and the light emitted by the light source 5 The light enters the optical cavity through the slot 320; a light blocking portion 6 is provided at the inner wall of the slot 320 or at the edge of the slot 320, and the light blocking portion 6 is used to block the light entering the optical cavity 31 to prevent the light from directly hitting the low-beam side wall 310 of the optical cavity 31 close to the slot 320; a reflective surface 311 is provided on the side wall of the optical cavity 31 directly opposite to the slot 320, and the reflective surface 311 is used to reflect the light entering the optical cavity 31 to supplement the light intensity of the high-beam side wall 312 of the optical cavity 31 far away from the slot 320;

[0031] When the optical cavity mode without a light guide plate of the present application is used, during operation, the middle part 313 and the lower part (the high beam side wall 312) of the inner wall of the optical cavity 31 mainly rely on direct light from the light source 5 to obtain light, and the upper part (the low beam side wall 310) of the inner wall of the optical cavity 31 relies on diffusely reflected light in the optical cavity 31 to obtain light. At the same time, the lower part (the high beam side wall 312) of the inner wall of the optical cavity 31 also relies on the reflection of the reflective surface 311 for supplementary light. Through this structural layout design, a new mode is formed, which can better avoid the problem of too strong light intensity at the low beam and too weak light intensity at the high beam, and the structural design is extremely simple and low in cost. This new mode has a very broad development and application prospect.

[0032] It should be noted that the reflection surface 311 can be formed by a polishing process or by directly installing a reflection layer, which is not limited to the above and falls within the protection scope of the present application. The degree and angle of light reflection can be designed and adjusted according to actual needs. The area of ​​the low beam side wall 310 and the area of ​​the high beam side wall 312 can be specifically adjusted according to the actual lamp body size and brightness requirements, and the above-mentioned parameter adjustments are within the general capabilities of technical personnel in this field. The light blocking portion 6 can be independently arranged on the inner wall of the groove 320 or on the edge of the groove 320, or it can be integrally formed with the groove 320 (that is, the light blocking portion 6 is formed while the groove 320 is processed).

[0033] Preferably, a frame 33 is provided on the optical bracket 3, and two side-by-side dividing strips 330 are provided in the frame 33, and the two dividing strips 330 divide the internal space of the frame 33 into three optical cavities 31; one side of the frame 33 is a partition 32 and is formed with multiple slots 320, and a single optical cavity 31 is correspondingly connected to one or more slots 320; the structure is simple and easy to process, and in this way, three optical cavities in the optical cavity mode without a light guide plate are formed, which respectively correspond to the left and right arrow marks on the identification light and the human-shaped mark in the middle, with good shading effect and very simple assembly.

[0034] Preferably, the partition bar 330 is provided with an extension portion 331 extending into the light source installation area 30, and the plurality of extension portions 331 form a support frame for supporting the light source installation area 30; the integrity is good, and reliable support force can be provided to the light source installation area 30, thereby ensuring the strength of this part.

[0035] Preferably, a circuit board 7 is provided in the light source installation area 30, and a plurality of light sources 5 and a status indicator light 70 are provided on the circuit board 7. An annular anti-light leakage enclosure 71 is provided on the extension portion adjacent to the status indicator light 70. The structure is simple, and mutual light leakage between the light source 5 and the status indicator light 70 is avoided.

[0036] Preferably, a wire pressing plate 332 is also provided on the side of the frame 33 where the slot 320 is provided, and the wire pressing plate 332 is provided with a wire pressing groove for pressing the connecting wire of the circuit board 7 onto the front shell component or the rear shell component; by adopting this design, the optical support foot can be used to better solve the problems encountered in the wire tension test.

[0037] Preferably, the circuit board 7 is located above the optical cavity 31 , and the upper placement of the circuit board 7 is conducive to protection against water accumulation.

[0038] Preferably, the front shell assembly 1 and the rear shell assembly 2 both include a shell 10, the edge of the shell 10 is formed with a frame, and the frame of the front shell assembly 1 and the frame of the rear shell assembly 2 are combined to form an installation chamber;

[0039] Among them, different lamp bodies can be set on one side or two sides. When displaying on both sides, both shells 10 are provided with guide marks 100 and diffusion plates 101 matching the guide marks. When displaying on one side, only one of the two shells is provided with guide marks 100 and diffusion plates 101, and the other shell is closed.

[0040] Embodiment 2

[0041] This embodiment is basically the same as the previous embodiment, and the similarities are not repeated here. Figure 5As shown, the difference is that: the partition bar 330 and the extension part 331 are integrally formed, the partition plate 32 is movably arranged on the movable bar formed by the partition bar 330 and the extension part 331, the partition plate 32 and the two sides of the frame 33 are slidably arranged, and the frame 33 is provided with a first adjustment unit 8 for adjusting the position of the partition plate 32; the light blocking part 6 is a light blocking sheet arranged on the inner wall of the slot 320 and capable of longitudinally damping and rotating to adjust the angle; the front shell component or the rear shell component is provided with a second adjustment unit 9 for adjusting the distance between the frame 33 and the light source 5;

[0042] The distance between the frame and the light source is adjusted by the second adjustment unit, and during the adjustment process, the light intensity at the high beam side wall of the optical cavity far from the groove is measured until the measurement result meets the set light intensity range required for the high beam side wall of the optical cavity far from the groove; the distance between the partition and the light source is adjusted by the first adjustment unit, and during the adjustment process, the light intensity at the middle side wall of the optical cavity is measured until the measurement result meets the set light intensity range required for the middle side wall of the optical cavity; the angle of the light blocking plate is adjusted, and during the adjustment process, the light intensity at the low beam side wall of the optical cavity close to the groove is measured until the measurement result meets the set light intensity range required for the low beam side wall of the optical cavity close to the groove;

[0043] By adopting this structure, the distance between the frame and the light source, the distance between the partition and the light source, and the angle of the light shielding sheet can be flexibly adjusted and debugged to quickly obtain the required parameters, and then the product structure of the fixed structure in the first embodiment can be designed according to the obtained parameters, thereby greatly shortening the development cycle of the emergency evacuation sign light of the optical cavity mode type without a light guide plate and improving production efficiency.

[0044] It should be noted that the first adjustment unit 8 and the second adjustment unit 9 can adopt existing linear adjustment mechanisms, such as screw rod assemblies, gear racks, etc., and can implement this solution without limiting their specific forms. During debugging, it is also necessary to set a front shell and a rear shell to block the front and back to form an installation chamber to get close to the real simulation effect.

[0045] Embodiment 3

[0046] Based on the structure of the second embodiment, this embodiment provides an application method of an optical cavity type emergency evacuation sign light without a light guide plate, wherein the method comprises the following steps:

[0047] The distance between the frame and the light source is adjusted by the second adjustment unit, and during the adjustment process, the light intensity at the far-beam side wall of the optical cavity far from the groove is measured until the measurement result meets the light intensity range required by the far-beam side wall of the optical cavity far from the groove;

[0048] The first adjustment unit is used to adjust the distance between the partition and the light source, and during the adjustment process, the light intensity at the side wall of the middle part of the optical cavity is measured until the measurement result meets the required light intensity range at the side wall of the middle part of the optical cavity;

[0049] The angle of the light shield is adjusted, and during the adjustment process, the light intensity of the low beam side wall of the optical cavity close to the slot is measured until the measurement result meets the required light intensity range of the low beam side wall of the optical cavity close to the slot;

[0050] By adopting this method, the distance between the frame and the light source, the distance between the partition and the light source, and the angle of the light blocking plate can be flexibly adjusted and debugged to quickly obtain the required parameters, and then the product structure of the fixed structure as in Example 1 can be designed based on the obtained parameters, thereby greatly shortening the development cycle of the emergency evacuation sign light of the optical cavity mode type without a light guide plate and improving production efficiency.

[0051] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An optical cavity type emergency evacuation sign light without a light guide plate, comprising a front shell component, a rear shell component and an optical bracket, wherein an installation chamber is provided between the surfaces of the front shell component and the rear shell component on opposite sides, and the optical bracket is located in the installation chamber, characterized in that: A light source installation area and a frame-shaped light cavity are formed on the optical bracket; the light source installation area and the light cavity are separated by a partition, and a groove is provided on the partition, and the groove connects the light source installation area and the light cavity; a light source is provided in the light source installation area, and the light emitted by the light source enters the light cavity through the groove; a light blocking portion is provided at the inner wall of the groove or at the edge of the groove, and the light blocking portion is used to block the light entering the light cavity to prevent the light from directly hitting the low-beam side wall of the light cavity close to the groove; a reflecting surface is provided on the side wall of the light cavity opposite to the groove, and the reflecting surface is used to reflect the light entering the light cavity to supplement the light intensity of the high-beam side wall of the light cavity far away from the groove.

2. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 1, characterized in that: A frame is provided on the optical bracket, and two side-by-side partition bars are provided in the frame, and the two partition bars divide the internal space of the frame into three optical cavities; one side of the frame is the partition and is formed with a plurality of the slots, and a single optical cavity is correspondingly connected to one or more of the slots.

3. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 2, characterized in that: The partition bar is provided with an extension portion extending into the light source installation area, and a plurality of the extension portions form a support frame for supporting the light source installation area.

4. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 3, characterized in that: A circuit board is arranged in the light source installation area, a plurality of the light sources and status indicator lights are arranged on the circuit board, and an annular anti-light-channeling enclosure is arranged on the extension portion adjacent to the status indicator lights.

5. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 4, characterized in that: A wire pressing plate is also provided on the side of the frame body provided with the slot, and a wire pressing groove for pressing the connecting wires of the circuit board onto the front shell component or the rear shell component is provided on the wire pressing plate.

6. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 3, characterized in that: The dividing strip and the extension portion are integrally formed, the partition is movably inserted into the movable strip formed by the dividing strip and the extension portion, the partition and both side edges of the frame are slidably arranged, and the frame is provided with a first adjustment unit for adjusting the position of the partition; the light blocking portion is a light blocking sheet arranged on the inner wall of the groove and capable of longitudinally damping and rotating to adjust the angle.

7. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 6, characterized in that: The front housing component or the rear housing component is provided with a second adjustment unit for adjusting the distance between the frame and the light source.

8. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 3, characterized in that: The circuit board is located above the optical cavity.

9. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 1, characterized in that: The front shell assembly and the rear shell assembly both include a shell, the edge of the shell is formed with a frame, and the frame of the front shell assembly and the frame of the rear shell assembly are combined to form the installation chamber; The two shells are both provided with a guide mark and a diffusion plate matched with the guide mark, or only one of the two shells is provided with a guide mark and a diffusion plate.

10. An application method of an optical cavity type emergency evacuation sign light without a light guide plate, using the optical cavity type emergency evacuation sign light without a light guide plate as claimed in claim 7, characterized in that: The method comprises the steps of: The distance between the frame and the light source is adjusted by the second adjustment unit, and during the adjustment process, the light intensity at the far-beam side wall of the optical cavity far from the groove is measured until the measurement result meets the light intensity range required by the far-beam side wall of the optical cavity far from the groove; The first adjustment unit is used to adjust the distance between the partition and the light source, and during the adjustment process, the light intensity at the side wall of the middle part of the optical cavity is measured until the measurement result meets the required light intensity range at the side wall of the middle part of the optical cavity; The angle of the light shield is adjusted, and during the adjustment process, the light intensity at the low beam side wall of the optical cavity close to the slot is measured until the measurement result meets the required light intensity range of the low beam side wall of the optical cavity close to the slot.

Images