Television + Theatre
Much like musical theatre the lighting in television plays the to audiences expectations, they feel something is going to happen as the tension builds. The red is used as foreshadowing. It could also mean that because it is on the main character that the red danger light is a reflection of his own psychological behaviour. This is particularly in-line with the musical theatre approach to semiotics where colour is used to sign post the audience as to the narrative developments. For example in this scene in Sherlock the tension is building because the character is being tricked in to a panic by the psychological meaning of the lighting and darkness. 
And in this scene in this scene from Frankenstein (National
Theatre Live) the dark tones and shadows stereotypically mean danger and
mystery. This translates the tense atmosphere of this confrontation between the
creature and creator. Also the placement of the audience effects this concept. A theatre audience is usually far from the stage and needs bigger signals that are achieved through lighting and props. Where as in Television and Film the audience are either surrounded by the screen or are close to their television set so they can see even the smallest lighting effect. For example in the film Stoker there is a scene in which there is a yellow lighting fixture. In this scene they are trying to hide what they have done and I feel that this is reflected in with the yellow shining light in between the officer and the two murderers. Yellow has connotations of bright innocence and sunshine.
Where as in theatre these small differences are un-noticeable so the lighting change and meanings are more broad and bold. For example in this scene from A Dream Play by August Strindberg a woman is projecting into heaven and is shown as being innocent and cleansed much like the candelabra in Stoker.
Film + Retail
In film lighting is used to express a certain mood or feeling of a character's or situation. It is also used architectural to light an object, building or even someone's face. It is used to give the audience narrative understanding and engage them into the film thus making them have an emotional response to the action on screen. This, in the broader concept, isn't too dissimilar to the way lighting is used in retail. For example in a lot of modern shops lighting is used as an atmospheric tool, creating experiences which influence to the consumers’ mood and behaviour and sometimes what they end up buying. If a customer has an emotional response to a certain item or atmosphere that is lit they are likely to want to own it. For example in Holister a lot of the items are lit in a dark room with an intense warm yellow light highlighting the item they want the customer to focus on.
Or in Film lighting is used to express the emotional state of the characters for example in this scene from Trance the woman is trying to hypnotise the man so he can remember a past memory. A mixture of flashing lights and bright colours are commonly associated with psychological unease or mental instability so in this scene the audience have an uncomfortable emotional response to the unease of this scene.
in the context of the huge market demand and the level of business R & D advances in lighting and stage lighting companies have made great progress and development, has greatly improved the function of the lighting effects and quality, or in product design. Real-time monitoring of temperature, the temperature inside the lamp can keep abreast of the situation; under the premise of ensuring the heat and reduce noise; multiple security, built-in temperature switches, temperature sensors, wind speed detection, electronic ballasts work state detection, to ensure safe use; closed automatic power down light, low temperature, not aging parts, more durable.
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