Light cavity type emergency evacuation marker lamp without light guide plate

Abstract

The light cavity type emergency evacuation marker lamp without the light guide plate comprises a front shell assembly, a rear shell assembly and an optical support, an installation 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 installation cavity, and a light source installation 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, and the new mode has very wide development and application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency evacuation sign lights, and more specifically to an optical cavity type emergency evacuation sign light without a light guide plate. Background Art

[0002] Emergency evacuation sign lights are suitable for fire emergency lighting and are the most common lighting tool in fire emergency situations. 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 is non-aging, has fast heat dissipation, and is impact-resistant. Fire evacuation indicator lights can be installed in wall-mounted, portable, or hanging styles.

[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-shaped) on one side or both sides. However, the light source structure of this light guide plate structure has a defect: the area near the light source position will be obviously overbright, while the area far away from the light source position will be obviously not bright enough. This is a disadvantage 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 cannot be eradicated. Therefore, there is an urgent need for a new mode of light guide plate-free optical cavity emergency evacuation sign light that can break through the existing light guide plate mode. Utility Model Content

[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.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A light guide plate-free optical cavity type emergency evacuation sign light is constructed, comprising a front shell assembly, a rear shell assembly and an optical bracket, wherein an installation cavity is provided between opposite side surfaces of the front shell assembly and the rear shell assembly, and the optical bracket is located in the installation cavity, wherein 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.

[0007] The optical cavity type emergency evacuation sign light without a light guide plate described in the present invention is characterized in that a frame is provided on the optical bracket, and two side-by-side dividing strips are provided in the frame, and the two dividing strips 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.

[0008] In the optical cavity type emergency evacuation sign light without a light guide plate described in the present invention, 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 utility model is provided with a circuit board in the light source installation area, a plurality of light sources and status indicator lights are provided on the circuit board, and an annular anti-light-channeling 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 utility model is characterized in that a wire pressing plate is further provided on the side of the frame body provided with the slot, and the wire pressing plate is provided with a wire pressing groove for pressing the connecting wires of the circuit board onto the front shell component or the rear shell component.

[0011] In the optical cavity type emergency evacuation sign light without a light guide plate described in the utility model, the circuit board is located above the optical cavity.

[0012] The light guide plate-free optical cavity type emergency evacuation sign light of the utility model, wherein 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 cavity;

[0013] 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 the guide mark and the diffusion plate.

[0014] The beneficial effect of the present invention is that: by applying the optical cavity mode without a light guide plate 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 radiation from the light source to obtain light, 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 reflective 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

[0015] 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 skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 This is a schematic diagram of the structure of an optical cavity type emergency evacuation sign light without a light guide plate in a preferred embodiment of the present invention (the edge of the front shell component is partially hidden);

[0017] Figure 2 yes Figure 1 sectional view of

[0018] Figure 3 This is a schematic diagram of the exploded structure of an optical cavity type emergency evacuation sign light without a light guide plate in a preferred embodiment of the present invention;

[0019] Figure 4 This is a schematic structural diagram of the optical support for an optical cavity-type emergency evacuation sign light without a light guide plate in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some 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 are within the scope of protection of the present invention.

[0021] The preferred embodiment of the utility model has a cavity-type emergency evacuation sign light without a light guide plate. 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 provided between opposite side surfaces 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, the partition 32 is provided with a slot 320, the slot 320 connects the light source mounting area 30 and the optical cavity 31; a light source 5 is provided in the light source mounting area 30, and the light emitted by the light source 5 Light enters the optical cavity through the slot 320; a light blocking portion 6 is provided on the inner wall of the slot 320 or on the edge of the slot 320, and is used to block light entering the optical cavity 31, preventing light from directly hitting the low-beam side wall 310 of the optical cavity 31 near the slot 320; a reflective surface 311 is provided on the side wall of the optical cavity 31 opposite the slot 320, and is used to reflect light entering the optical cavity 31, thereby supplementing the light intensity of the high-beam side wall 312 of the optical cavity 31 away from the slot 320;

[0022] When the light guide plate-free optical cavity mode of the present application is used, during operation, the middle portion 313 and the lower portion (high beam side wall 312) of the inner wall of the optical cavity 31 mainly rely on direct illumination from the light source 5 to obtain light, and the upper portion (low beam side wall 310) of the inner wall of the optical cavity 31 relies on diffusely reflected light within the optical cavity 31 to obtain light. At the same time, the lower portion (high beam side wall 312) of the inner wall of the optical cavity 31 also relies on reflection from the reflective surface 311 for supplementary light. This structural layout design forms a new mode that can effectively avoid the problems of excessive light intensity in the low beam and too weak light intensity in the high beam. In addition, the structural design is extremely simple and the cost is low. This new mode has a very broad development and application prospect.

[0023] It should be noted that the formation of the reflective surface 311 can be obtained by a polishing process or by directly installing a reflective layer. There is no limitation on this, and both fall within the protection scope of this 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 targetedly adjusted according to the actual lamp body size and brightness requirements, and the above-mentioned parameter adjustments are all 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 at the same time as the groove 320 is processed).

[0024] 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 connected to one or more slots 320; the structure is simple and easy to process, and in this way, three optical cavities are formed in the optical cavity mode without a light guide plate, which correspond to the left and right arrow marks on the identification light and the human-shaped mark in the middle, respectively, with good shading effect and very simple assembly.

[0025] Preferably, the partition bar 330 is provided with an extension portion 331 extending into the light source installation area 30, and multiple extension portions 331 form a support frame for supporting the light source installation area 30; it has good integrity and can provide reliable support force for the light source installation area 30, ensuring the strength of this part.

[0026] 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, which prevents light from the light source 5 and the status indicator light 70 from leaking into each other.

[0027] 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 wires of the circuit board 7 on the front shell component or the rear shell component; with this design, the optical support can be used to better solve the problems encountered in the wire tension test.

[0028] 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.

[0029] 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;

[0030] 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 that match 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 adopts a closed setting.

[0031] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. An optical cavity type emergency evacuation sign light without a light guide plate, comprising a front shell assembly, a rear shell assembly and an optical bracket, wherein a mounting cavity is provided between opposite side surfaces of the front shell assembly and the rear shell assembly, and the optical bracket is located in the mounting cavity, 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 slot is provided on the partition, and the slot 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 slot; a light blocking portion is provided at the inner wall of the slot or at the edge of the slot, 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 slot; a reflecting surface is provided on the side wall of the light cavity opposite to the slot, 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 slot.

2. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 1, characterized in that: The optical bracket is provided with a frame, 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 multiple slots, and a single optical cavity is connected to one or more corresponding 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 provided 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-channeling enclosure is provided 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 further provided on the side of the frame body where the slot is provided. The wire pressing plate is provided with a wire pressing groove for pressing the connecting wires of the circuit board onto the front shell component or the rear shell component.

6. The optical cavity type emergency evacuation sign light without a light guide plate according to claim 4, characterized in that: The circuit board is located above the optical cavity.

7. 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 each include a shell, the edges of the shell are 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 cavity; 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 the guide mark and the diffusion plate.

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